Product Information

LT1956IFE#TRPBF

LT1956IFE#TRPBF electronic component of Analog Devices

Datasheet
Switching Voltage Regulators 1.5A 500kHz High Voltage Step-down Regulator

Manufacturer: Analog Devices
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)

1: USD 11.6782 ea
Line Total: USD 11.6782

0 - Global Stock
MOQ: 1  Multiples: 1
Pack Size: 1
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0 - Global Stock


Ships to you between Thu. 11 Apr to Mon. 15 Apr

MOQ : 1
Multiples : 1

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LT1956IFE#TRPBF
Analog Devices

1 : USD 13.7419
10 : USD 12.1034
25 : USD 11.7312
100 : USD 9.9102
250 : USD 9.6263
500 : USD 8.8735
1000 : USD 8.3798
2500 : USD 8.3675

     
Manufacturer
Product Category
RoHS - XON
Icon ROHS
Mounting Style
Package / Case
Output Voltage
Output Current
Number of Outputs
Input Voltage MAX
Topology
Input Voltage MIN
Switching Frequency
Minimum Operating Temperature
Maximum Operating Temperature
Qualification
Series
Packaging
Height
Input Voltage
Operating Temperature Range
Type
Brand
Shutdown
Development Kit
Operating Supply Current
Product Type
Factory Pack Quantity :
Subcategory
Cnhts
Hts Code
Mxhts
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LT1956/LT1956-5 High Voltage, 1.5A, 500kHz Step-Down Switching Regulators FEATURES DESCRIPTIO n Wide Input Range: 5.5V to 60V The LT 1956/LT1956-5 are 500kHz monolithic buck n 1.5A Peak Switch Current switching regulators with an input voltage capability up to n Small 16-Pin SSOP or Thermally Enhanced 60V. A high efficiency 1.5A, 0.2W switch is included on the TSSOP Package die along with all the necessary oscillator, control and logic n Saturating Switch Design: 0.2W circuitry. A current mode architecture provides fast tran- n Peak Switch Current Maintained Over sient response and good loop stability. Full Duty Cycle Range Special design techniques and a new high voltage process n Constant 500kHz Switching Frequency achieve high efficiency over a wide input range. Efficiency n Effective Supply Current: 2.5mA is maintained over a wide output current range by using the n Shutdown Current: 25m A output to bias the circuitry and by utilizing a supply boost n 1.2V Feedback Reference (LT1956) capacitor to saturate the power switch. Patented circuitry n 5V Fixed Output (LT1956-5) maintains peak switch current over the full duty cycle n Easily Synchronizable range*. A shutdown pin reduces supply current to 25m A and n Cycle-by-Cycle Current Limiting the device can be externally synchronized from 580kHz to U 700kHz with a logic level input. APPLICATIO S The LT1956/LT1956-5 are available in fused-lead 16-pin n High Voltage, Industrial and Automotive SSOP and thermally enhanced TSSOP packages. n Portable Computers , LTC and LT are registered trademarks of Linear Technology Corporation. n Battery-Powered Systems *U.S. PATENT NO. 6,498,466 n Battery Chargers n Distributed Power Systems TYPICAL APPLICATIO 5V Buck Converter Efficiency vs Load Current MMSD914TI 100 V = 12V IN 6 L = 18H V = 5V 0.1F OUT V BOOST 90 IN 10H V OUT 12V 4 2 V SW 5V IN (TRANSIENTS V = 3.3V OUT 2.2F 1A TO 60V) 10MQ060N 80 100V LT1956-5 22F CERAMIC 6.3V 15 10 CERAMIC SHDN BIAS 70 14 12 SYNC FB 60 GND V C 1, 8, 9, 16 11 50 0 0.25 0.50 0.75 1.00 1.25 220pF 4.7k LOAD CURRENT (A) 1956 TA02 4700pF UNITED CHEMI-CON THCS50EZA225ZT 1956 TA01 1956f 1 EFFICIENCY (%) U ULT1956/LT1956-5 ABSOLUTE AXI U RATI GS (Note 1) Input Voltage (V ) ................................................. 60V Operating Junction Temperature Range IN BOOST Pin Above SW ............................................ 35V LT1956EFE/LT1956EFE-5/LT1956EGN/LT1956EGN-5 BOOST Pin Voltage ................................................. 68V (Notes 8, 10) ..................................... 40 C to 125 C SYNC, SENSE Voltage (LT1956-5) ........................... 7V LT1956IFE/LT1956IFE-5/LT1956IGN/LT1956IGN-5 SHDN Voltage ........................................................... 6V (Notes 8, 10) ..................................... 40 C to 125 C BIAS Pin Voltage .................................................... 30V Storage Temperature Range ................ 65 C to 150 C FB Pin Voltage/Current (LT1956) ................... 3.5V/2mA Lead Temperature (Soldering, 10 sec)................. 300 C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW TOP VIEW ORDER PART ORDER PART GND 1 16 GND NUMBER NUMBER GND 1 16 GND SW 2 15 SHDN SW 2 15 SHDN LT1956EGN LT1956EFE NC 3 14 SYNC NC 3 14 SYNC LT1956IGN LT1956IFE V 4 13 NC IN V 4 13 NC IN LT1956EGN-5 LT1956EFE-5 NC 5 12 FB/SENSE NC 5 12 FB/SENSE LT1956IGN-5 LT1956IFE-5 BOOST 6 11 V C BOOST 6 11 V C NC 7 10 BIAS NC 7 10 BIAS FE PART MARKING GN PART MARKING GND 8 9 GND GND 8 9 GND 1956EFE 1956 FE PACKAGE GN PACKAGE 16-LEAD PLASTIC TSSOP 16-LEAD PLASTIC SSOP 1956IFE 1956I T = 125 C, q = 45 C/ W, q (PAD) = 10 C/ W JMAX JA JC T = 125 C, q = 85 C/ W, q (PIN 8) = 25 C/ W JMAX JA JC 19565 1956EFE-5 EXPOSED BACKSIDE MUST BE SOLDERED FOUR CORNER PINS SOLDERED TO GROUND PLANE 1956IFE-5 1956I5 TO GROUND PLANE Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. J V = 15V, V = 1.5V, SHDN = 1V, Boost o/c, SW o/c, unless otherwise noted. IN C PARAMETER CONDITIONS MIN TYP MAX UNITS Reference Voltage (LT1956) 5.5V V 60V 1.204 1.219 1.234 V IN V + 0.2 V V 0.2 l 1.195 1.243 V OL C OH SENSE Voltage (LT1956-5) 5.5V V 60V 4.94 5 5.06 V IN V + 0.2 V V 0.2 l 4.90 5.10 V OL C OH SENSE Pin Resistance (LT1956-5) 9.5 13.8 19 kW FB Input Bias Current (LT1956) l 0.5 1.5 m A Error Amp Voltage Gain (Notes 2, 9) 200 400 V/V Error Amp g dl (V ) = 10m A (Note 9) 1500 2000 3000 m Mho m C l 1000 3200 m Mho V to Switch g 1.7 A/V C m EA Source Current FB = 1V or V = 4.1V l 125 225 400 m A SENSE EA Sink Current FB = 1.4V or V = 5.7V l 100 225 450 m A SENSE V Switching Threshold Duty Cycle = 0 0.9 V C V High Clamp SHDN = 1V 2.1 V C 1956f 2 U WWW

Tariff Desc

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:
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Analog Devices Hittite
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Analog Devices / Linear Technology
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DALLAS / MAXIM
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Trinamic Motion Control GmbH

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