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LINEAR TECHNOLOGY  LT1938EDD#PBF  DC-DC Switching Buck (Step Down) Regulator, Adjustable, 3.6V-25Vin, 1.27V-20Vout, 2.2Aout, DFN-10

LINEAR TECHNOLOGY LT1938EDD#PBF
Manufacturer Part No:
LT1938EDD#PBF
Order Code:
2254834
Technical Datasheet:
See all Technical Docs

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Product Overview

The LT1938EDD#PBF is an adjustable frequency monolithic buck Switching Regulator accepts input voltage up to 25V. A high efficiency 0.18R switch is included on the die along with a boost Schottky diode and the necessary oscillator, control and logic circuitry. Current-mode topology is used for fast transient response and good loop stability. The LT1938's high operating frequency allows the use of small, inductors and ceramic capacitors resulting in low output ripple while keeping total solution size to a minimum. The low current shutdown mode reduces input supply current to less than 1µA while a resistor and capacitor on the RUN/SS pin provide a controlled output voltage ramp (soft-start). A power good flag signals when VOUT reaches 90% of the programmed output voltage.
  • Integrated boost diode
  • Power good flag
  • Soft-start capability
  • <1µA Low shutdown current
  • 0.18R On-resistance saturating switch design
  • 1.265V Feedback reference voltage

Product Information

Topology:
Buck (Step Down)
Input Voltage Min:
3.6V
Input Voltage Max:
25V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
DFN
No. of Pins:
10Pins
Output Current:
2.2A
Output Voltage Min:
1.27V
Output Voltage Max:
20V
Switching Frequency:
3.3MHz
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
  • Power Management
  • 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):
.00018