L4938EPD

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Advanced Voltage Regulator

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Product overview

Description

The L4938ED and L4938EPD are monolithic integrated dual voltage regulators with two very low dropout outputs and additional functions such as power-on reset and input voltage sense. They are designed for supplying microcomputer controlled systems especially in automotive applications.

  • All features

    • Output 2 voltage 5 V ± 2% with 400 mA current capability (ADJ wired to VOUT2)
    • High precision standby output voltage 5 V ± 1% with 100 mA current capability
    • Output 2 disable function for standby mode
    • Enable and sense inputs (EN, SI) protected against negative transients down to -5 V
    • Extremely low quiescent current, 65 μA (less than 90 μA) in standby mode
    • Reset threshold adjustable from 3.8 V to 4.7 V
    • Operating transient supply voltage up to 40 V
    • Output 2 voltage adjustable by external voltage divider
    • Operating DC supply voltage range 5 V - 28 V

Circuit Diagram

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L4938EPD

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L4938EPD13TR
Active
PowerSO-20 Automotive Ecopack2

L4938EPD13TR

Package:

PowerSO-20

Material Declaration**:

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Marketing Status

Active

Package

PowerSO-20

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors