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LINEAR TECHNOLOGY  LT3957AEUHE#PBF  DC-DC Switching Boost, Inverting, SEPIC Regulator, Adjustable, 3V-40V in, 600mA out, 1.2MHz, QFN-36

LINEAR TECHNOLOGY LT3957AEUHE#PBF
Manufacturer Part No:
LT3957AEUHE#PBF
Order Code:
2097983
Technical Datasheet:
See all Technical Docs

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Product Overview

The LT3957AEUHE#PBF is a current-mode DC-to-DC Converter which is capable of generating either positive or negative output voltage. It can be configured as either a boost, flyback, SEPIC or inverting converter. It features an internal low side N-channel power MOSFET rated for 40V at 5A and driven from an internal regulated 5.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of LT3957A can be set with an external resistor over a 100kHz to 1MHz range and can be synchronized to an external clock using the SYNC pin. A minimum operating supply voltage of 3V and a low shutdown quiescent current of less than 1µA, make the LT3957A ideally suited for battery-powered systems. The LT3957A features soft-start and frequency foldback functions to limit inductor current during start-up. The LT3957A has improved load transient performance compared to the LT3957.
  • Single feedback pin for positive or negative output voltage
  • Current-mode control provides excellent transient response
  • Synchronizable to an external clock
  • Programmable input undervoltage lockout with hysteresis
  • Programmable soft-start
  • Internal 5.2V low dropout voltage regulator

Product Information

Topology:
Boost, Flyback, Inverting, SEPIC
Input Voltage Min:
3V
Input Voltage Max:
40V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
QFN
No. of Pins:
36Pins
Output Current:
600mA
Output Voltage Min:
-
Output Voltage Max:
40V
Switching Frequency:
1.2MHz
Operating Temperature Max:
125°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Automotive
  • Communications & Networking
  • Industrial
  • Power Management

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000335