L4901A

$2.08

Description：IC REG BCK 5V 0.4A DL 7HEPTAWATT
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:1f0635fa889b Category: Voltage Regulators - DC DC Switching Regulators Brand: STMicroelectronics

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Product introduction

L4901A is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists STMicroelectronics. Its product description is IC REG BCK 5V 0.4A DL 7HEPTAWATT. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for L4901A

Description：IC REG BCK 5V 0.4A DL 7HEPTAWATT
Series：-
Mfr：STMicroelectronics
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：2
Voltage - Input (Min)：-
Voltage - Input (Max)：20V
Voltage - Output (Min/Fixed)：5V
Voltage - Output (Max)：-
Current - Output：400mA
Frequency - Switching：-
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：Heptawatt-7 (Vertical, Bent and Staggered Leads)
Supplier Device Package：7-HEPTAWATT
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for L4901A

L4901A

Voltage Regulators - DC DC Switching Regulators Overview

The L4901A is a dual linear voltage regulator manufactured by STMicroelectronics. It provides two fixed +5V outputs with a maximum current capability of 0.4A per channel. The device integrates a reset circuit to monitor supply voltages and ensure system reliability. It is designed for applications requiring stable, low-noise power delivery from dual rails.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Dual independent linear regulation channels providing fixed +5V outputs
Integrated reset generator for supervisory functions
Bipolar technology construction for robust performance
Plastic ZIP package design for through-hole mounting

Voltage Regulators - DC DC Switching Regulators Applications

Systems requiring dual +5V logic power supplies
Embedded controllers needing integrated voltage regulation and reset
Industrial equipment with bipolar power requirements

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., H) against the datasheet to confirm package type and pinout compatibility. Ensure the required output current does not exceed the 0.4A limit per channel. Confirm thermal management requirements for the ZIP package in enclosed environments.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual fixed +5V rails are needed alongside a reset function. Compare with single-channel regulators if only one rail is required. Consider thermal dissipation capabilities relative to the load current and ambient temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the L49xx series of linear regulators from STMicroelectronics. This family focuses on providing reliable voltage regulation with additional supervisory features for microprocessor-based systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

L4901AH is a variant within the same family offering similar electrical characteristics but potentially different packaging or temperature specifications.

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.