Low

LINEAR TECHNOLOGY  LT3976EMSE#PBF  DC-DC Switching Buck (Step Down) Regulator, Adjustable, 4.3V-40Vin, 1.2V-39.2Vout, 5Aout, MSOP-16

LINEAR TECHNOLOGY LT3976EMSE#PBF
Technical Data Sheet (412.03KB) EN See all Technical Docs

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Product Overview

The LT3976EMSE#PBF is an adjustable frequency monolithic buck Switching Regulator accepts a wide input voltage range up to 40V. Low quiescent current design consumes only 3.3µA of supply current while regulating with no load. Low ripple Burst Mode® operation maintains high efficiency at low output current while keeping the output ripple below 15mV in a typical application. The LT3976 can supply up to 5A of load current and has current limit foldback to limit power dissipation during short-circuit. A low dropout voltage of 500mV is maintained when the input voltage drops below the programmed output voltage, such as during automotive cold crank. An internally compensated current mode topology is used for fast transient response and good loop stability. A high efficiency 75mΩ switch is included on the die along with a boost Schottky diode. An accurate 1.02V threshold enable pin can be driven directly from a microcontroller or used as a programmable undervoltage lockout.
  • Excellent start-up and dropout performance
  • Accurate programmable undervoltage lockout
  • Power good flag
  • Soft-start capability
  • Thermal shutdown protection
  • Current limit foldback with soft-start override
  • Synchronizable between 250kHz to 2MHz
  • 700nA Low shutdown current

 

Product Information

Input Voltage Min:
4.3V
Input Voltage Max:
40V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
MSOP
No. of Pins:
16Pins
Output Current:
5A
Output Voltage Min:
1.2V
Output Voltage Max:
39.2V
Switching Frequency:
2MHz
Topology:
Buck (Step Down)
Operating Temperature Max:
125°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualifications Standard:
-
MSL:
MSL 1 - Unlimited
Operating Temperature Min:
-40 °C
Primary Input Voltage:
40 V
SVHC:
No SVHC (17-Dec-2015)
Output Voltage:
40 V

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Applications

  • Automotive;
  • Portable Devices;
  • Industrial

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
RoHS Compliant:
Yes
Authorized Distributor

Substitutes