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ADI LT1938IDD#TRPBF product image
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ADI LT1938IDD#TRPBF

Manufacturer
ADI
MPN
LT1938IDD#TRPBF
LCSC Part #
C665582
Packaging
DFN-10-EP(3x3)
Customer #
Key Attributes
3MHz Step-down type Adjustable 2.2A 1.265V~20V DFN-10-EP(3x3) Voltage Regulators - DC DC Switching Regulators RoHS
DatasheetADI LT1938IDD#TRPBF
RoHS Compliance1 documents available
Alternative Parts3
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement

Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerADI
PackagingDFN-10-EP(3x3)
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching3MHz
FunctionStep-down type
Number of Outputs1
FeaturesAdjustable soft-start;Operating status indication;External compensation
Output TypeAdjustable
TopologyBuck
Operating Voltage3.6V~25V
Switch tube (built-in/external)Built-in
Output Current2.2A
Output Voltage1.265V~20V
Quiescent Current400uA
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Introduction

AI Translation

The LT1938 is an adjustable frequency (300kHz to 2.8MHz) monolithic buck switching regulator that accepts input voltages up to 25V. A high efficiency 0.18Ω 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, low cost 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. The LT1938 is available in a 3mm×3mm DFN package with Exposed Pad for low thermal resistance.

Features

AI Translation
  • Wide Input Voltage Range: 3.6V to 25V
  • 2.2A Maximum Output Current
  • Adjustable Switching Frequency: 300kHz to 2.8MHz
  • Low Shutdown Current: l₀ < 1µA
  • Integrated Boost Diode
  • Power Good Flag
  • Saturating Switch Design: 0.18Ω On-Resistance
  • 1.265V Feedback Reference Voltage
  • Output Voltage: 1.265V to 20V
  • Soft-Start Capability
  • Small 10-Pin Thermally Enhanced (3mm×3mm) DFN Package

Applications

AI Translation
  • Automotive Battery Regulation
  • Power for Portable Products
  • Distributed Supply Regulation
  • Industrial Supplies
  • Wall Transformer Regulation