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LTC3856EUH#TRPBF

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Switching Voltage Regulators PolyPhase, Synchronous Regulator Step Down Controller with Diffamp
Manufacturer: Analog Devices



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Ships to you between Tue. 27 Apr to Thu. 29 Apr

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Multiples : 1

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LTC3856EUH#TRPBF
Analog Devices

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25 : $ 7.5
100 : $ 6.9158
250 : $ 6.6632
500 : $ 6.4263
1000 : $ 6.3316

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Manufacturer
Analog Devices
Product Category
Switching Voltage Regulators
RoHS - XON
Y Icon ROHS
Mounting Style
Smd/Smt
Output Voltage
0.6 v to 5 V
Output Current
60 A
Number of Outputs
1 Output
Input Voltage MAX
38 V
Topology
Buck
Input Voltage MIN
4.5 V
Switching Frequency
250 Khz To 770 Khz
Minimum Operating Temperature
- 40 C
Maximum Operating Temperature
+125 C
Series
Ltc3856
Packaging
Cut Tape
Input Voltage
4.5 v to 38 V
Package / Case
QFN-32
Type
Step-Down Dc/Dc Controller
Brand
Analog Devices / Linear Technology
Shutdown
Shutdown
Development Kit
Dc1580a
Load Regulation
0.01 %
Operating Supply Current
4 mA
Product Type
Switching Voltage Regulators
Factory Pack Quantity :
2500
Subcategory
Pmic - Power Management Ics
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Mfr. Part No.
Description
Stock
Switching Voltage Regulators Low IQ, Dual, 2-Phase Synchronous Step Down Controller
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Switching Voltage Regulators Low IQ, Dual, 2-Phase Synchronous Step Down Controller
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Image
Mfr. Part No.
Description
Stock
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PMIC; DC/DC converter; Uout:2.5÷5.5V; uDFN8; boost
4470

POWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresPOWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresLTC3856 Ta e MaxiMMu Tar (Note 1) Input Supply Voltage (V ) ......................... 40V to ?0.3V I , V Voltages ................................... INTV to ?0.3V IN TH FB CC Topside Driver Voltages (BOOSTn) ............ 46V to ?0.3V INTV Peak Output Current ................................100mA CC Switch Voltage (SWn) ................................... 40V to ?5V Operating Junction Temperature Range INTV , RUN, PGOOD, EXTV , (Notes 2, 3) ............................................ ?40?C to 125?C CC CC (BOOSTn ? SWn) ......................................... 6V to ?0.3V Storage Temperature Range ................... ?65?C to 125?C SENSEn Voltages ...................................... 5.5V to ?0.3V Reflow Peak Body Temperature (UH Package) ...... 260?C MODE, PLLIN, ILIM, TK/SS, AVP, Lead Temperature (Soldering, 10 sec.) FREQ, ISET Voltages ............................. INTV to ?0.3V FE Package ............................................................ 300?C CC DIFFP, DIFFN, DIFFOUT, PHASMD, ITEMP Voltages ..................................... INTV to ?0.3V CC in p Fc T TOP VIEW 1 PLLIN FREQ 38 RUN 2 CLKOUT 37 TOP VIEW + SENSE1 3 SW1 36 ? SENSE1 4 TG1 35 NC 5 NC 34 TK/SS 6 BOOST1 32 31 30 29 28 27 26 25 33 TK/SS 1 24 BOOST1 V 7 PGND1 32 FB V 2 23 BG1 I 8 BG1 FB 31 TH I 3 22 V TH IN SGND 9 30 V IN 39 AVP 4 21 INTV CC 33 AVP 10 29 INTV CC SGND SGND/PGND ITEMP 5 20 EXTV CC ITEMP 11 28 EXTV CC PHASMD 6 19 BG2 PHASMD 12 27 BG2 + SENSE2 7 18 BOOST2 + SENSE2 13 26 PGND2 ? SENSE2 8 17 TG2 SENSE2? 14 25 NC 9 10 11 12 13 14 15 16 DIFFP 15 24 BOOST2 DIFFN 16 23 TG2 DIFFOUT 17 22 SW2 ISET 18 21 PGOOD UH PACKAGE 32-LEAD (5mm ? 5mm) PLASTIC QFN ILIM 19 20 MODE T = 125?C, ? = 34?C/W JMAX JA FE PACKAGE EXPOSED PAD (PIN 33) IS SGND/PGND, MUST BE SOLDERED TO PCB 38-LEAD PLASTIC TSSOP T = 125?C, ? = 25?C/W JMAX JA EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB 3856fa 2 For more information www.linear.com/LTC3856 ? DIFFP SENSE1 + DIFFN SENSE1 DIFFOUT RUN ISET FREQ ILIM PLLIN MODE CLKOUT PGOOD SW1 SW2 TG1 ion igura on ings bsoluPOWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresPOWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresLTC3856 Ta e MaxiMMu Tar (Note 1) Input Supply Voltage (V ) ......................... 40V to ?0.3V I , V Voltages ................................... INTV to ?0.3V IN TH FB CC Topside Driver Voltages (BOOSTn) ............ 46V to ?0.3V INTV Peak Output Current ................................100mA CC Switch Voltage (SWn) ................................... 40V to ?5V Operating Junction Temperature Range INTV , RUN, PGOOD, EXTV , (Notes 2, 3) ............................................ ?40?C to 125?C CC CC (BOOSTn ? SWn) ......................................... 6V to ?0.3V Storage Temperature Range ................... ?65?C to 125?C SENSEn Voltages ...................................... 5.5V to ?0.3V Reflow Peak Body Temperature (UH Package) ...... 260?C MODE, PLLIN, ILIM, TK/SS, AVP, Lead Temperature (Soldering, 10 sec.) FREQ, ISET Voltages ............................. INTV to ?0.3V FE Package ............................................................ 300?C CC DIFFP, DIFFN, DIFFOUT, PHASMD, ITEMP Voltages ..................................... INTV to ?0.3V CC in p Fc T TOP VIEW 1 PLLIN FREQ 38 RUN 2 CLKOUT 37 TOP VIEW + SENSE1 3 SW1 36 ? SENSE1 4 TG1 35 NC 5 NC 34 TK/SS 6 BOOST1 32 31 30 29 28 27 26 25 33 TK/SS 1 24 BOOST1 V 7 PGND1 32 FB V 2 23 BG1 I 8 BG1 FB 31 TH I 3 22 V TH IN SGND 9 30 V IN 39 AVP 4 21 INTV CC 33 AVP 10 29 INTV CC SGND SGND/PGND ITEMP 5 20 EXTV CC ITEMP 11 28 EXTV CC PHASMD 6 19 BG2 PHASMD 12 27 BG2 + SENSE2 7 18 BOOST2 + SENSE2 13 26 PGND2 ? SENSE2 8 17 TG2 SENSE2? 14 25 NC 9 10 11 12 13 14 15 16 DIFFP 15 24 BOOST2 DIFFN 16 23 TG2 DIFFOUT 17 22 SW2 ISET 18 21 PGOOD UH PACKAGE 32-LEAD (5mm ? 5mm) PLASTIC QFN ILIM 19 20 MODE T = 125?C, ? = 34?C/W JMAX JA FE PACKAGE EXPOSED PAD (PIN 33) IS SGND/PGND, MUST BE SOLDERED TO PCB 38-LEAD PLASTIC TSSOP T = 125?C, ? = 25?C/W JMAX JA EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB 3856fa 2 For more information www.linear.com/LTC3856 ? DIFFP SENSE1 + DIFFN SENSE1 DIFFOUT RUN ISET FREQ ILIM PLLIN MODE CLKOUT PGOOD SW1 SW2 TG1 ion igura on ings bsoluLTC3856 Dro er Fni MTa LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3856EFE#PBF LTC3856EFE#TRPBF LTC3856FE 38-Lead Plastic TSSOP ?40?C to 125?C LTC3856IFE#PBF LTC3856IFE#TRPBF LTC3856FE 38-Lead Plastic TSSOP ?40?C to 125?C LTC3856EUH#PBF LTC3856EUH#TRPBF 3856 32-Lead (5mm ? 5mm) Plastic QFN ?40?C to 125?C LTC3856IUH#PBF LTC3856IUH#TRPBF 3856 32-Lead (5mm ? 5mm) Plastic QFN ?40?C to 125?C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ Te rical Tc T The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at T = 25?C (Note 2). V = 15V, V = 5V, unless otherwise noted. A IN RUN SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops V Input Voltage 4.5 38 V IN V Output Voltage 0.6 5.0 V OUT V Regulated Feedback Voltage I Voltage = 1.2V, E-Grade (Note 4) l 0.5955 0.600 0.6045 V FB TH I Voltage = 1.2V, I-Grade (Note 4) l 0.593 0.600 0.607 V TH I Feedback Current (Note 4) ?15 ?50 nA FB V Reference Voltage Line Regulation V = 4.5V to 38V (Note 4) 0.002 0.02 %/V REFLNREG IN V Output Voltage Load Regulation (Note 4) LOADREG Measured in Servo Loop, ?I Voltage = 1.2V to 0.7V l 0.01 0.1 % TH Measured in Servo Loop, ?I Voltage = 1.2V to 1.6V l ?0.01 ?0.1 % TH g Transconductance Amplifier g I = 1.2V, Sink/Source 5?A (Note 4) 2.0 mmho m m TH I Input DC Supply Current (Note 5) Q Normal Mode V = 15V 4.0 mA IN Shutdown V = 0V 40 70 ?A RUN DF Maximum Duty Factor In Dropout; f = 500kHz 93 94 % MAX OSC UVLO Undervoltage Lockout V Ramping Down l 3.0 3.2 3.4 V INTVCC UVLO Hyst UVLO Hysteresis 0.6 V V Feedback Overvoltage Lockout Measured at V l 0.64 0.66 0.68 V OVL FB + + l I SENSE Pins Bias Current Each Channel, V = 3.3V ?1 ?2 ?A SENSE SENSE1,2 I DCR Tempco Compensation Current V = 0.3V l 9 10 11 ?A TEMP ITEMP l I Soft-Start Charge Current V = 0V 1.0 1.25 1.5 ?A TK/SS TK/SS V RUN Pin On Threshold V Rising l 1.1 1.22 1.35 V RUN RUN V RUN Pin On Hysteresis 80 mV RUNHYS V Maximum Current Sense Threshold V = 0.5V, V = 3.3V SENSE(MAX) FB SENSE1,2 l (E-Grade) I = 0V 25 30 35 mV LIM l I = Float 45 50 55 mV LIM l I = INTV 68 75 82 mV LIM CC V Maximum Current Sense Threshold V = 0.5V, V = 3.3V SENSE(MAX) FB SENSE1,2 (I-Grade) I = 0V l 23 30 37 mV LIM I = Float l 43 50 57 mV LIM I = INTV l 66 75 84 mV LIM CC 3856fa 3 For more information www.linear.com/LTC3856 ics eris harac lec ion orPOWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresPOWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresLTC3856 Ta e MaxiMMu Tar (Note 1) Input Supply Voltage (V ) ......................... 40V to ?0.3V I , V Voltages ................................... INTV to ?0.3V IN TH FB CC Topside Driver Voltages (BOOSTn) ............ 46V to ?0.3V INTV Peak Output Current ................................100mA CC Switch Voltage (SWn) ................................... 40V to ?5V Operating Junction Temperature Range INTV , RUN, PGOOD, EXTV , (Notes 2, 3) ............................................ ?40?C to 125?C CC CC (BOOSTn ? SWn) ......................................... 6V to ?0.3V Storage Temperature Range ................... ?65?C to 125?C SENSEn Voltages ...................................... 5.5V to ?0.3V Reflow Peak Body Temperature (UH Package) ...... 260?C MODE, PLLIN, ILIM, TK/SS, AVP, Lead Temperature (Soldering, 10 sec.) FREQ, ISET Voltages ............................. INTV to ?0.3V FE Package ............................................................ 300?C CC DIFFP, DIFFN, DIFFOUT, PHASMD, ITEMP Voltages ..................................... INTV to ?0.3V CC in p Fc T TOP VIEW 1 PLLIN FREQ 38 RUN 2 CLKOUT 37 TOP VIEW + SENSE1 3 SW1 36 ? SENSE1 4 TG1 35 NC 5 NC 34 TK/SS 6 BOOST1 32 31 30 29 28 27 26 25 33 TK/SS 1 24 BOOST1 V 7 PGND1 32 FB V 2 23 BG1 I 8 BG1 FB 31 TH I 3 22 V TH IN SGND 9 30 V IN 39 AVP 4 21 INTV CC 33 AVP 10 29 INTV CC SGND SGND/PGND ITEMP 5 20 EXTV CC ITEMP 11 28 EXTV CC PHASMD 6 19 BG2 PHASMD 12 27 BG2 + SENSE2 7 18 BOOST2 + SENSE2 13 26 PGND2 ? SENSE2 8 17 TG2 SENSE2? 14 25 NC 9 10 11 12 13 14 15 16 DIFFP 15 24 BOOST2 DIFFN 16 23 TG2 DIFFOUT 17 22 SW2 ISET 18 21 PGOOD UH PACKAGE 32-LEAD (5mm ? 5mm) PLASTIC QFN ILIM 19 20 MODE T = 125?C, ? = 34?C/W JMAX JA FE PACKAGE EXPOSED PAD (PIN 33) IS SGND/PGND, MUST BE SOLDERED TO PCB 38-LEAD PLASTIC TSSOP T = 125?C, ? = 25?C/W JMAX JA EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB 3856fa 2 For more information www.linear.com/LTC3856 ? DIFFP SENSE1 + DIFFN SENSE1 DIFFOUT RUN ISET FREQ ILIM PLLIN MODE CLKOUT PGOOD SW1 SW2 TG1 ion igura on ings bsoluPOWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresPOWER LOSS (W) LTC3856 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp FeaT DescripT ? ? n PolyPhase Controller Reduces Input and Output The LTC 3856 is a single output, dual channel PolyPhase Capacitance and Power Supply Induced Noise synchronous step-down DC/DC controller that drives all n Wide V Range: 4.5V to 38V Operation N-channel power MOSFET stages. This device includes a IN n ?0.75%, 0.6V Reference Voltage Accuracy high speed differential amplifier for remote output volt - n High Efficiency: Up to 95% age sense. Power loss and supply noise are minimized by ? n Programmable Burst Mode Operation or operating the two controller output stages out-of-phase Stage Shedding? for Highest Light Load Efficiency and up to 12-phase operation can be achieved. n Active Voltage Positioning (AVP) The LTC3856 monitors the output current by sensing n R or DCR Current Sensing SENSE the voltage drop across the output inductor (DCR) or by n Programmable DCR Temperature Compensation using a sense resistor. DCR temperature compensation n Phase-Lockable Fixed Frequency: 250kHz to 770kHz maintains an accurate current sense threshold over a n True Remote Sense Differential Amplifier broad temperature range. A constant-frequency, current n Dual N-Channel MOSFET Synchronous Drive mode architecture allows a phase-lockable frequency of n V Range: 0.6V to 5V without Differential Amplifier OUT up to 770kHz. n V Range: 0.6V to 3.3V with Differential Amplifier OUT n A wide 4.5V to 38V input supply range encompasses Adjustable Soft-Start or V Tracking OUT n most intermediate bus voltages and battery chemistries. Stackable for Up to 12-Phase Operation n Burst Mode operation, continuous or Stage Shedding 32-Pin (5mm ? 5mm) QFN and 38-Pin TSSOP Packages modes are supported. A TK/SS pin shared by both chan- Ta nels ramps the output voltage during start-up. n Telecom and Datacom Systems L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase, Burst Mode and OPTI-LOOP are registered trademarks and Stage Shedding is a trademark of Linear Technology Corporation. n Industrial and Medical Instruments All other trademarks are the property of their respective owners. Protected by U.S. Patents, n including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6498466, DC Power Distribution Systems 6580258, 6611131, 6674274. n Computer Systems Typical Ta Efficiency and Power Loss High Efficiency 1.5V/50A Step-Down Converter vs Output Current V 100 100 IN 4.5V TO V = 12V IN 30.1k 10?F 20V 90 ? 4 V = 1.5V DIFFOUT V TG1 OUT IN 0.33?H Burst Mode V BOOST1 FB 0.1?F 80 OPERATION ILIM SW1 10 20k LTC3856 70 RUN BG1 PGOOD PLLIN 60 + CLKOUT SENSE1 ? 50 1 PHASMD SENSE1 MODE TG2 40 0.33?H V OUT ITEMP BOOST2 0.1?F 1.5V 30 FREQ SW2 50A 0 BG2 20 122k EXTV INTV CC CC + 10 100?F DIFFN SENSE2 4.7?F ? 8 ? DIFFP SENSE2 0 ?1 0.1 1 10 100 I TK/SS GND AVP ISET TH 2200pF LOAD CURRENT (A) 0.1?F 3856 TA01b 1.5k 3856 TA01a 3856fa 1 For more information www.linear.com/LTC3856 EFFICIENCY (%) S S S S S S S S S S S S ion pplica ions pplica ion uresLTC3856 Ta e MaxiMMu Tar (Note 1) Input Supply Voltage (V ) ......................... 40V to ?0.3V I , V Voltages ................................... INTV to ?0.3V IN TH FB CC Topside Driver Voltages (BOOSTn) ............ 46V to ?0.3V INTV Peak Output Current ................................100mA CC Switch Voltage (SWn) ................................... 40V to ?5V Operating Junction Temperature Range INTV , RUN, PGOOD, EXTV , (Notes 2, 3) ............................................ ?40?C to 125?C CC CC (BOOSTn ? SWn) ......................................... 6V to ?0.3V Storage Temperature Range ................... ?65?C to 125?C SENSEn Voltages ...................................... 5.5V to ?0.3V Reflow Peak Body Temperature (UH Package) ...... 260?C MODE, PLLIN, ILIM, TK/SS, AVP, Lead Temperature (Soldering, 10 sec.) FREQ, ISET Voltages ............................. INTV to ?0.3V FE Package ............................................................ 300?C CC DIFFP, DIFFN, DIFFOUT, PHASMD, ITEMP Voltages ..................................... INTV to ?0.3V CC in p Fc T TOP VIEW 1 PLLIN FREQ 38 RUN 2 CLKOUT 37 TOP VIEW + SENSE1 3 SW1 36 ? SENSE1 4 TG1 35 NC 5 NC 34 TK/SS 6 BOOST1 32 31 30 29 28 27 26 25 33 TK/SS 1 24 BOOST1 V 7 PGND1 32 FB V 2 23 BG1 I 8 BG1 FB 31 TH I 3 22 V TH IN SGND 9 30 V IN 39 AVP 4 21 INTV CC 33 AVP 10 29 INTV CC SGND SGND/PGND ITEMP 5 20 EXTV CC ITEMP 11 28 EXTV CC PHASMD 6 19 BG2 PHASMD 12 27 BG2 + SENSE2 7 18 BOOST2 + SENSE2 13 26 PGND2 ? SENSE2 8 17 TG2 SENSE2? 14 25 NC 9 10 11 12 13 14 15 16 DIFFP 15 24 BOOST2 DIFFN 16 23 TG2 DIFFOUT 17 22 SW2 ISET 18 21 PGOOD UH PACKAGE 32-LEAD (5mm ? 5mm) PLASTIC QFN ILIM 19 20 MODE T = 125?C, ? = 34?C/W JMAX JA FE PACKAGE EXPOSED PAD (PIN 33) IS SGND/PGND, MUST BE SOLDERED TO PCB 38-LEAD PLASTIC TSSOP T = 125?C, ? = 25?C/W JMAX JA EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB 3856fa 2 For more information www.linear.com/LTC3856 ? DIFFP SENSE1 + DIFFN SENSE1 DIFFOUT RUN ISET FREQ ILIM PLLIN MODE CLKOUT PGOOD SW1 SW2 TG1 ion igura on ings bsoluLTC3856 Dro er Fni MTa LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3856EFE#PBF LTC3856EFE#TRPBF LTC3856FE 38-Lead Plastic TSSOP ?40?C to 125?C LTC3856IFE#PBF LTC3856IFE#TRPBF LTC3856FE 38-Lead Plastic TSSOP ?40?C to 125?C LTC3856EUH#PBF LTC3856EUH#TRPBF 3856 32-Lead (5mm ? 5mm) Plastic QFN ?40?C to 125?C LTC3856IUH#PBF LTC3856IUH#TRPBF 3856 32-Lead (5mm ? 5mm) Plastic QFN ?40?C to 125?C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ Te rical Tc T The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at T = 25?C (Note 2). V = 15V, V = 5V, unless otherwise noted. A IN RUN SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops V Input Voltage 4.5 38 V IN V Output Voltage 0.6 5.0 V OUT V Regulated Feedback Voltage I Voltage = 1.2V, E-Grade (Note 4) l 0.5955 0.600 0.6045 V FB TH I Voltage = 1.2V, I-Grade (Note 4) l 0.593 0.600 0.607 V TH I Feedback Current (Note 4) ?15 ?50 nA FB V Reference Voltage Line Regulation V = 4.5V to 38V (Note 4) 0.002 0.02 %/V REFLNREG IN V Output Voltage Load Regulation (Note 4) LOADREG Measured in Servo Loop, ?I Voltage = 1.2V to 0.7V l 0.01 0.1 % TH Measured in Servo Loop, ?I Voltage = 1.2V to 1.6V l ?0.01 ?0.1 % TH g Transconductance Amplifier g I = 1.2V, Sink/Source 5?A (Note 4) 2.0 mmho m m TH I Input DC Supply Current (Note 5) Q Normal Mode V = 15V 4.0 mA IN Shutdown V = 0V 40 70 ?A RUN DF Maximum Duty Factor In Dropout; f = 500kHz 93 94 % MAX OSC UVLO Undervoltage Lockout V Ramping Down l 3.0 3.2 3.4 V INTVCC UVLO Hyst UVLO Hysteresis 0.6 V V Feedback Overvoltage Lockout Measured at V l 0.64 0.66 0.68 V OVL FB + + l I SENSE Pins Bias Current Each Channel, V = 3.3V ?1 ?2 ?A SENSE SENSE1,2 I DCR Tempco Compensation Current V = 0.3V l 9 10 11 ?A TEMP ITEMP l I Soft-Start Charge Current V = 0V 1.0 1.25 1.5 ?A TK/SS TK/SS V RUN Pin On Threshold V Rising l 1.1 1.22 1.35 V RUN RUN V RUN Pin On Hysteresis 80 mV RUNHYS V Maximum Current Sense Threshold V = 0.5V, V = 3.3V SENSE(MAX) FB SENSE1,2 l (E-Grade) I = 0V 25 30 35 mV LIM l I = Float 45 50 55 mV LIM l I = INTV 68 75 82 mV LIM CC V Maximum Current Sense Threshold V = 0.5V, V = 3.3V SENSE(MAX) FB SENSE1,2 (I-Grade) I = 0V l 23 30 37 mV LIM I = Float l 43 50 57 mV LIM I = INTV l 66 75 84 mV LIM CC 3856fa 3 For more information www.linear.com/LTC3856 ics eris harac lec ion or

Tariff Concession Code
Tariff Desc

Free
8542.31.00 51 No ..Application Specific (Digital) Integrated Circuits (ASIC)

Electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits
Monolithic integrated circuits:
AD4
ANALOG DEVICES
Analog Devices Hittite
ANALOG DEVICES (LINEAR TECHNOLOGY)
Analog Devices / Hittite
Analog Devices / Linear Technology
Analog Devices Inc
Analog Devices Inc.
Analog Devices, Inc.
ANALOG MICRO ELECTRONICS
ANALOG MICROELECTRONICS
LINEAR
LINEAR TECH
Linear Technology
Linear Technology (part of ADI)
LT
LT4
Technology