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LTC4370CDE#PBF

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Power Management Specialized - PMIC Two-Supply Diode-OR Current Sharing Controller
Manufacturer: Analog Devices



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LTC4370CDE#PBF
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LTC4370CDE#PBF
Analog Devices

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Manufacturer
Analog Devices
Product Category
Power Management Specialised - PMIC
RoHS - XON
Y Icon ROHS
Mounting Style
Smd/Smt
Packaging
Tube
Package / Case
Dfn-16
Series
Ltc4370
Brand
Analog Devices
Product Type
Power Management Specialized - Pmic
Factory Pack Quantity :
91
Subcategory
Pmic - Power Management Ics
Cnhts
8542390000
Hts Code
8542390001
Mxhts
85423901
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Mfr. Part No.
Description
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Image
Mfr. Part No.
Description
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LTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2m? FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2m? ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2mO FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2mO ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 a T e Maxi Mu M r a T (Notes 1, 2) V , V , OUT1, OUT2 Voltages ...................?2V to 24V FETON1, FETON2 Currents .......................................5mA IN1 IN2 V Voltage ............................................... ?0.3V to 6.5V Operating Ambient Temperature Range CC GATE1, GATE2 Voltages (Note 3) ............... ?0.3V to 34V LTC4370C ................................................ 0?C to 70?C CPO1, CPO2 Voltages (Note 3) ................... ?0.3V to 34V LTC4370I .............................................?40?C to 85?C RANGE Voltage ................................?0.3V to V + 0.3V Storage Temperature Range .................. ?65?C to 150?C CC COMP Voltage .............................................. ?0.3V to 3V Lead Temperature (Soldering, 10 sec) EN1, EN2, FETON1, FETON2 Voltages .........?0.3V to 24V MS Package ......................................................300?C CPO1, CPO2 Average Current .................................10mA p c F T TOP VIEW EN2 1 16 EN1 TOP VIEW RANGE 2 15 GND EN2 1 16 EN1 COMP 3 14 V CC RANGE 2 15 GND COMP 3 14 V V 4 13 V CC IN2 17 IN1 V 4 13 V IN2 IN1 GATE2 5 12 GATE1 GATE2 5 12 GATE1 CPO2 6 11 CPO1 CPO2 6 11 CPO1 OUT2 7 10 OUT1 OUT2 7 10 OUT1 FETON2 8 9 FETON1 FETON2 8 9 FETON1 MS PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE 16-LEAD (4mm ? 3mm) PLASTIC DFN T = 125?C, ? = 125?C/W JMAX JA T = 125?C, ? = 43?C/W JMAX JA EXPOSED PAD (PIN 17) PCB GND CONNECTION IS OPTIONAL o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4370CDE#PBF LTC4370CDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN 0?C to 70?C LTC4370IDE#PBF LTC4370IDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN ?40?C to 85?C LTC4370CMS#PBF LTC4370CMS#TRPBF 4370 16-Lead Plastic MSOP 0?C to 70?C LTC4370IMS#PBF LTC4370IMS#TRPBF 4370 16-Lead Plastic MSOP ?40?C to 85?C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/ 4370f 2 ion or er ion igura on in ings bsoluLTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2mO FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2mO ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2mO FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2mO ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 a T e Maxi Mu M r a T (Notes 1, 2) V , V , OUT1, OUT2 Voltages ...................-2V to 24V FETON1, FETON2 Currents .......................................5mA IN1 IN2 V Voltage ............................................... -0.3V to 6.5V Operating Ambient Temperature Range CC GATE1, GATE2 Voltages (Note 3) ............... -0.3V to 34V LTC4370C ................................................ 0?C to 70?C CPO1, CPO2 Voltages (Note 3) ................... -0.3V to 34V LTC4370I .............................................-40?C to 85?C RANGE Voltage ................................-0.3V to V + 0.3V Storage Temperature Range .................. -65?C to 150?C CC COMP Voltage .............................................. -0.3V to 3V Lead Temperature (Soldering, 10 sec) EN1, EN2, FETON1, FETON2 Voltages .........-0.3V to 24V MS Package ......................................................300?C CPO1, CPO2 Average Current .................................10mA p c F T TOP VIEW EN2 1 16 EN1 TOP VIEW RANGE 2 15 GND EN2 1 16 EN1 COMP 3 14 V CC RANGE 2 15 GND COMP 3 14 V V 4 13 V CC IN2 17 IN1 V 4 13 V IN2 IN1 GATE2 5 12 GATE1 GATE2 5 12 GATE1 CPO2 6 11 CPO1 CPO2 6 11 CPO1 OUT2 7 10 OUT1 OUT2 7 10 OUT1 FETON2 8 9 FETON1 FETON2 8 9 FETON1 MS PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE 16-LEAD (4mm ? 3mm) PLASTIC DFN T = 125?C, ? = 125?C/W JMAX JA T = 125?C, ? = 43?C/W JMAX JA EXPOSED PAD (PIN 17) PCB GND CONNECTION IS OPTIONAL o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4370CDE#PBF LTC4370CDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN 0?C to 70?C LTC4370IDE#PBF LTC4370IDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN ?40?C to 85?C LTC4370CMS#PBF LTC4370CMS#TRPBF 4370 16-Lead Plastic MSOP 0?C to 70?C LTC4370IMS#PBF LTC4370IMS#TRPBF 4370 16-Lead Plastic MSOP ?40?C to 85?C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/ 4370f 2 ion or er ion igura on in ings bsoluLTC4370 e T c T T The l denotes those specifications which apply over the full operating temperature range, otherwise specifications are at T = 25?C. V = V = 12V, OUT = V , V open, unless otherwise noted. A IN1 IN2 IN CC SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supplies l V V , V Operating Range 2.9 18 V IN IN1 IN2 l With External V Supply 0 V V CC CC V V External Supply Operating Range V , V ? V l 2.9 6 V CC(EXT) CC IN1 IN2 CC l V V Regulated Voltage 4.5 5 5.5 V CC(REG) CC I V , V Current IN IN1 IN2 Enabled, Higher Supply Other V = 11.7V, Both EN = 0V l 2.1 3 mA IN Enabled, Lower Supply Other V = 12.3V, Both EN = 0V l 320 450 ?A IN Pull-Up Both V = 0V, V = 5V, Both EN = 0V l ?110 ?180 ?A IN CC Disabled Both EN = 1V l 80 180 ?A I V Current CC CC l Enabled V = 5V, Both V = 1.2V, Both EN = 0V 2 2.8 mA CC IN l Disabled V = 5V, Both V = 1.2V, Both EN = 1V 105 220 ?A CC IN V V Undervoltage Lockout Threshold V Rising l 2.3 2.55 2.7 V CC(UVLO) CC CC ?V V Undervoltage Lockout Hysteresis l 40 120 300 mV CC(HYST) CC Load Share V Error Amplifier Input Offset l 0 ?2 mV EA(OS) g Error Amplifier Gain (??I /?V ) 150 ?S m(EA) COMP OUT V Minimum Forward Regulation Voltage V = 1.2V, V = 5V l 2 12 25 mV FR(MIN) IN CC (V ? OUT) V = 12V l 2 25 50 mV IN IN l V Maximum Forward Regulation Voltage R = 4.99k, V = 1.2V, V = 5V 40 62 82 mV FR(MAX) RANGE IN CC l (V ? OUT) R = 4.99k, V = 12V 45 75 100 mV IN RANGE IN l R = 49.9k, V = 1.2V, V = 5V 425 511 575 mV RANGE IN CC l R = 49.9k, V = 12V 440 524 590 mV RANGE IN I RANGE Pull-Up Current RANGE = 0.2V l ?8.8 ?10 ?11.2 ?A RANGE l V RANGE Load Share Disable Threshold V ? 0.5 V ? 0.3 V ? 0.1 V RANGE(TH) CC CC CC Gate Drive l ?V MOSFET Gate Drive (GATE ? V ) V = 0.2V; I = 0, ?1?A; Highest V = 12V 10 12 14 V GATE IN FWD IN l V = 0.2V; I = 0, ?1?A; Highest V = 2.9V 4.5 7 9 V FWD IN t GATE1, GATE2 Turn-On Propagation Delay V (= V ? OUT) Step: ?0.3V 0.3V l 0.4 1 ?s ON(GATE) FWD IN l t GATE1, GATE2 Turn-Off Propagation Delay V Step: 0.3V ?0.3V 0.4 1 ?s OFF(GATE) FWD I GATE1, GATE2 Peak Pull-Up Current V = 0.4V, ?V = 0V, CPO = 17V l ?0.9 ?1.4 ?1.9 A GATE(PK) FWD GATE GATE1, GATE2 Peak Pull-Down Current V = ?2V, ?V = 5V l 0.9 1.4 1.9 A FWD GATE I GATE1, GATE2 Off Pull-Down Current Corresponding EN = 1V, ?V = 2.5V l 65 110 160 ?A GATE(OFF) GATE Input/Output Pins V EN1, EN2 Threshold Voltage EN Falling l 580 600 620 mV EN(TH) l ?V EN1, EN2 Threshold Hysteresis 2 8 20 mV EN(TH) I EN1, EN2 Current At 0.6V l 0 ?1 ?A EN I OUT1, OUT2 Current OUT l Enabled OUTn = 0V, 12V; Both EN = 0V ?70 260 ?A l Disabled Both EN = 1V 16 40 ?A I CPO1, CPO2 Pull-Up Current CPO = V l ?40 ?70 ?115 ?A CPO(UP) IN l V FETON1, FETON2 Output Low Voltage I = 1mA 0.12 0.4 V OL l I = 3mA 0.36 1.2 V V FETON1, FETON2 Output High Voltage I = ?1?A, V = 1V l V ? 1.4 V ? 0.9 V ? 0.5 V OH FWD CC CC CC 4370f 3 ics eris harac rical lecLTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2mO FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2mO ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2mO FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2mO ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 a T e Maxi Mu M r a T (Notes 1, 2) V , V , OUT1, OUT2 Voltages ...................-2V to 24V FETON1, FETON2 Currents .......................................5mA IN1 IN2 V Voltage ............................................... -0.3V to 6.5V Operating Ambient Temperature Range CC GATE1, GATE2 Voltages (Note 3) ............... -0.3V to 34V LTC4370C ................................................ 0?C to 70?C CPO1, CPO2 Voltages (Note 3) ................... -0.3V to 34V LTC4370I .............................................-40?C to 85?C RANGE Voltage ................................-0.3V to V + 0.3V Storage Temperature Range .................. -65?C to 150?C CC COMP Voltage .............................................. -0.3V to 3V Lead Temperature (Soldering, 10 sec) EN1, EN2, FETON1, FETON2 Voltages .........-0.3V to 24V MS Package ......................................................300?C CPO1, CPO2 Average Current .................................10mA p c F T TOP VIEW EN2 1 16 EN1 TOP VIEW RANGE 2 15 GND EN2 1 16 EN1 COMP 3 14 V CC RANGE 2 15 GND COMP 3 14 V V 4 13 V CC IN2 17 IN1 V 4 13 V IN2 IN1 GATE2 5 12 GATE1 GATE2 5 12 GATE1 CPO2 6 11 CPO1 CPO2 6 11 CPO1 OUT2 7 10 OUT1 OUT2 7 10 OUT1 FETON2 8 9 FETON1 FETON2 8 9 FETON1 MS PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE 16-LEAD (4mm ? 3mm) PLASTIC DFN T = 125?C, ? = 125?C/W JMAX JA T = 125?C, ? = 43?C/W JMAX JA EXPOSED PAD (PIN 17) PCB GND CONNECTION IS OPTIONAL o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4370CDE#PBF LTC4370CDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN 0?C to 70?C LTC4370IDE#PBF LTC4370IDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN ?40?C to 85?C LTC4370CMS#PBF LTC4370CMS#TRPBF 4370 16-Lead Plastic MSOP 0?C to 70?C LTC4370IMS#PBF LTC4370IMS#TRPBF 4370 16-Lead Plastic MSOP ?40?C to 85?C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/ 4370f 2 ion or er ion igura on in ings bsoluLTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2mO FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2mO ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 Two-Supply Diode-OR Current Balancing Controller Fea T Descrip T ? n Shares Load Between Two Supplies The LTC 4370 is a two-supply current sharing controller n Eliminates Need for Active Control of which incorporates MOSFET ideal diodes. The diodes Input Supplies block reverse and shoot-through currents during start-up n No Share Bus Required and fault conditions. Their forward voltage is adjusted to n Blocks Reverse Current share the load currents between supplies. Unlike other n No Shoot-Through Current During Start-Up or Faults sharing methods, neither a share bus nor trim pins on n 0V to 18V High Side Operation the supply are required. n Enable Inputs The maximum MOSFET voltage drop can be set with a n MOSFET On Status Outputs resistor. A fast gate turn-on reduces the load voltage n Dual Ideal Diode Mode droop during supply switchover. If the input supply fails n 16-Lead DFN (4mm ? 3mm) and MSOP Packages or is shorted, a fast turn-off minimizes reverse current transients. a T The controller operates with supplies from 2.9V to 18V. n Redundant Power Supplies For lower rail voltages, an external supply is needed at n High Availability Systems and Servers the V pin. Enable inputs can be used to turn off the CC n Telecom and Network Infrastructure MOSFET and put the controller in a low current state. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Status outputs indicate whether the MOSFETs are on or PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7920013 and off. The load sharing function can be disabled to turn the 8022679. Additional patent pending. LTC4370 into a dual ideal diode controller. Typical a T 12V, 10A Load Share Current Sharing Error vs Supply Difference SUM85N03-06P V INA 12V 20 39nF* 15 10 EN1 CPO1 V GATE1 IN1 OUT1 5 V CC 2mO FETON1 0.1?F OUT 0 GND LTC4370 12V, 10A FETON2 2mO ?5 NC RANGE OUT2 ?10 EN2 CPO2 V GATE2 COMP IN2 ?15 0.18?F 39nF* ?20 ?750 ?500 ?250 0 250 500 750 V INB V ? V (mV) INA INB 4370 TA01 4370 TA01b 12V SUM85N03-06P *OPTIONAL, FOR FAST TURN-ON 4370f 1 SHARING ERROR (I ? I )/I (%) VINA VINB L ion pplica ions pplica ion uresLTC4370 a T e Maxi Mu M r a T (Notes 1, 2) V , V , OUT1, OUT2 Voltages ...................-2V to 24V FETON1, FETON2 Currents .......................................5mA IN1 IN2 V Voltage ............................................... -0.3V to 6.5V Operating Ambient Temperature Range CC GATE1, GATE2 Voltages (Note 3) ............... -0.3V to 34V LTC4370C ................................................ 0?C to 70?C CPO1, CPO2 Voltages (Note 3) ................... -0.3V to 34V LTC4370I .............................................-40?C to 85?C RANGE Voltage ................................-0.3V to V + 0.3V Storage Temperature Range .................. -65?C to 150?C CC COMP Voltage .............................................. -0.3V to 3V Lead Temperature (Soldering, 10 sec) EN1, EN2, FETON1, FETON2 Voltages .........-0.3V to 24V MS Package ......................................................300?C CPO1, CPO2 Average Current .................................10mA p c F T TOP VIEW EN2 1 16 EN1 TOP VIEW RANGE 2 15 GND EN2 1 16 EN1 COMP 3 14 V CC RANGE 2 15 GND COMP 3 14 V V 4 13 V CC IN2 17 IN1 V 4 13 V IN2 IN1 GATE2 5 12 GATE1 GATE2 5 12 GATE1 CPO2 6 11 CPO1 CPO2 6 11 CPO1 OUT2 7 10 OUT1 OUT2 7 10 OUT1 FETON2 8 9 FETON1 FETON2 8 9 FETON1 MS PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE 16-LEAD (4mm ? 3mm) PLASTIC DFN T = 125?C, ? = 125?C/W JMAX JA T = 125?C, ? = 43?C/W JMAX JA EXPOSED PAD (PIN 17) PCB GND CONNECTION IS OPTIONAL o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4370CDE#PBF LTC4370CDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN 0?C to 70?C LTC4370IDE#PBF LTC4370IDE#TRPBF 4370 16-Lead (4mm ? 3mm) Plastic DFN ?40?C to 85?C LTC4370CMS#PBF LTC4370CMS#TRPBF 4370 16-Lead Plastic MSOP 0?C to 70?C LTC4370IMS#PBF LTC4370IMS#TRPBF 4370 16-Lead Plastic MSOP ?40?C to 85?C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/ 4370f 2 ion or er ion igura on in ings bsoluLTC4370 e T c T T The l denotes those specifications which apply over the full operating temperature range, otherwise specifications are at T = 25?C. V = V = 12V, OUT = V , V open, unless otherwise noted. A IN1 IN2 IN CC SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supplies l V V , V Operating Range 2.9 18 V IN IN1 IN2 l With External V Supply 0 V V CC CC V V External Supply Operating Range V , V = V l 2.9 6 V CC(EXT) CC IN1 IN2 CC l V V Regulated Voltage 4.5 5 5.5 V CC(REG) CC I V , V Current IN IN1 IN2 Enabled, Higher Supply Other V = 11.7V, Both EN = 0V l 2.1 3 mA IN Enabled, Lower Supply Other V = 12.3V, Both EN = 0V l 320 450 ?A IN Pull-Up Both V = 0V, V = 5V, Both EN = 0V l ?110 ?180 ?A IN CC Disabled Both EN = 1V l 80 180 ?A I V Current CC CC l Enabled V = 5V, Both V = 1.2V, Both EN = 0V 2 2.8 mA CC IN l Disabled V = 5V, Both V = 1.2V, Both EN = 1V 105 220 ?A CC IN V V Undervoltage Lockout Threshold V Rising l 2.3 2.55 2.7 V CC(UVLO) CC CC ?V V Undervoltage Lockout Hysteresis l 40 120 300 mV CC(HYST) CC Load Share V Error Amplifier Input Offset l 0 ?2 mV EA(OS) g Error Amplifier Gain (??I /?V ) 150 ?S m(EA) COMP OUT V Minimum Forward Regulation Voltage V = 1.2V, V = 5V l 2 12 25 mV FR(MIN) IN CC (V ? OUT) V = 12V l 2 25 50 mV IN IN l V Maximum Forward Regulation Voltage R = 4.99k, V = 1.2V, V = 5V 40 62 82 mV FR(MAX) RANGE IN CC l (V ? OUT) R = 4.99k, V = 12V 45 75 100 mV IN RANGE IN l R = 49.9k, V = 1.2V, V = 5V 425 511 575 mV RANGE IN CC l R = 49.9k, V = 12V 440 524 590 mV RANGE IN I RANGE Pull-Up Current RANGE = 0.2V l ?8.8 ?10 ?11.2 ?A RANGE l V RANGE Load Share Disable Threshold V ? 0.5 V ? 0.3 V ? 0.1 V RANGE(TH) CC CC CC Gate Drive l ?V MOSFET Gate Drive (GATE ? V ) V = 0.2V; I = 0, -1?A; Highest V = 12V 10 12 14 V GATE IN FWD IN l V = 0.2V; I = 0, -1?A; Highest V = 2.9V 4.5 7 9 V FWD IN t GATE1, GATE2 Turn-On Propagation Delay V (= V ? OUT) Step: ?0.3V 0.3V l 0.4 1 ?s ON(GATE) FWD IN l t GATE1, GATE2 Turn-Off Propagation Delay V Step: 0.3V ?0.3V 0.4 1 ?s OFF(GATE) FWD I GATE1, GATE2 Peak Pull-Up Current V = 0.4V, ?V = 0V, CPO = 17V l ?0.9 ?1.4 ?1.9 A GATE(PK) FWD GATE GATE1, GATE2 Peak Pull-Down Current V = -2V, ?V = 5V l 0.9 1.4 1.9 A FWD GATE I GATE1, GATE2 Off Pull-Down Current Corresponding EN = 1V, ?V = 2.5V l 65 110 160 ?A GATE(OFF) GATE Input/Output Pins V EN1, EN2 Threshold Voltage EN Falling l 580 600 620 mV EN(TH) l ?V EN1, EN2 Threshold Hysteresis 2 8 20 mV EN(TH) I EN1, EN2 Current At 0.6V l 0 ?1 ?A EN I OUT1, OUT2 Current OUT l Enabled OUTn = 0V, 12V; Both EN = 0V ?70 260 ?A l Disabled Both EN = 1V 16 40 ?A I CPO1, CPO2 Pull-Up Current CPO = V l ?40 ?70 ?115 ?A CPO(UP) IN l V FETON1, FETON2 Output Low Voltage I = 1mA 0.12 0.4 V OL l I = 3mA 0.36 1.2 V V FETON1, FETON2 Output High Voltage I = -1?A, V = 1V l V ? 1.4 V ? 0.9 V ? 0.5 V OH FWD CC CC CC 4370f 3 ics eris harac rical lec

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