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LINEAR TECHNOLOGY  LT3973EMSE#PBF  DC-DC Switching Buck Step Down Regulator, Adjustable, 4.2V-42Vin, 1.21V-40.5Vout, 750mAout, MSOP-10

LINEAR TECHNOLOGY LT3973EMSE#PBF
Manufacturer Part No:
LT3973EMSE#PBF
Order Code:
2097880
Technical Datasheet:
See all Technical Docs

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Product Overview

The LT3973EMSE#PBF is an adjustable frequency monolithic buck Switching Regulator accepts a wide input voltage range up to 42V and consumes only 2.5µA of quiescent current. A high efficiency switch is included on the die along with the catch diode, boost diode and the necessary oscillator, control and logic circuitry. Low ripple Burst Mode® operation maintains high efficiency at low output current while keeping the output ripple below 10mV in a typical application. A minimum dropout voltage of 530mV is maintained when the input voltage drops below the programmed output voltage, such as during automotive cold crank. Current-mode topology is used for fast transient response and good loop stability. A catch diode current limit provides protection against shorted outputs and overvoltage conditions, with thermal shutdown providing additional fault protection. An accurate programmable undervoltage lockout feature is available, producing a low shutdown current of 0.75µA.
  • Integrated boost and catch diodes
  • Excellent start-up and dropout performance
  • Accurate programmable undervoltage lockout
  • Internal catch diode current limit
  • Power good flag
  • Thermal shutdown

Product Information

Topology:
Buck (Step Down)
Input Voltage Min:
4.2V
Input Voltage Max:
42V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
MSOP
No. of Pins:
10Pins
Output Current:
750mA
Output Voltage Min:
1.21V
Output Voltage Max:
40.5V
Switching Frequency:
2.2MHz
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
  • Portable Devices
  • Industrial

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):
.000025