L4949E

$0.48

Description：IC REG LINEAR 5V 100MA
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:7b9814f7a69c Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

L4949E is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists STMicroelectronics. Its product description is IC REG LINEAR 5V 100MA. Review the specifications below when checking this part for your BOM.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators specifications for L4949E

Description：IC REG LINEAR 5V 100MA
Series：-
Mfr：STMicroelectronics
Package：Tube
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：28V
Voltage - Output (Min/Fixed)：5V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.5V @ 100mA
Current - Output：100mA
Current - Quiescent (Iq)：300 µA
Current - Supply (Max)：5 mA
PSRR：-
Control Features：Reset Output
Protection Features：Over Temperature, Short Circuit
Operating Temperature：-40°C ~ 125°C
Mounting Type：Through Hole
Package / Case：8-DIP (0.300", 7.62mm)
Supplier Device Package：-
Grade：-
Qualification：-

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators datasheet and documents for L4949E

L4949E

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The L4949E is a monolithic integrated 5V voltage regulator featuring very low dropout output and auxiliary functions including power-on reset and input voltage sense. Designed for microcomputer-controlled systems, particularly in automotive applications, it operates within a DC supply voltage range of 5V to 28V with transient immunity up to 40V. The device provides an output current capability of up to 100mA while maintaining extremely low quiescent current in standby mode. It incorporates thermal shutdown and short-circuit protections.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

Monolithic integrated 5V voltage regulator with very low dropout characteristics
Integrated power-on reset circuit with programmable pulse delay via external capacitor
Input voltage sense comparator for system supervision
High precision standby output voltage regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

Microcomputer controlled systems
Automotive electronic applications

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific package variant required, as the base part number corresponds to the Minidip configuration. Confirm that the component status aligns with design requirements, noting that related variants may carry different lifecycle statuses. Ensure all electrical parameters match the target application specifications before finalizing procurement decisions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 5V output with integrated reset and sensing capabilities is required. Consider the Minidip package constraints regarding thermal resistance and physical footprint. Evaluate the need for external capacitors to optimize reset delay timing and transient response performance under varying load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the L4949 series of multifunction very low drop voltage regulators manufactured by STMicroelectronics. The series includes variants such as L4949ED and L4949EP, which offer alternative packaging options like SO8 and SO20W while maintaining similar functional characteristics for power management in regulated systems.