L78L12ABD-TR

$0.26

Description：IC REG LINEAR 12V 100MA 8-SOIC
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:a09df9bd3226 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 12V 100MA 8-SOIC
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：12V
Voltage - Output (Max)：-
Voltage Dropout (Max)：-
Current - Output：100mA
Current - Quiescent (Iq)：6 mA
Current - Supply (Max)：6.5 mA
PSRR：42dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

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L78L12ABD-TR

Overview

The L78L12ABD-TR is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in an 8-pin SOIC surface-mount package. It provides a fixed 12 V output with a maximum current of 100 mA. The device supports input voltages up to 35 V and operates within a junction temperature range of -40 °C to +125 °C. Key electrical characteristics include a typical quiescent current of 6.5 mA and a supply voltage rejection ratio of 42 dB at 120 Hz.

Feature Summary

Integrated thermal overload protection and short-circuit protection for robust operation
Requires no external components for basic fixed-voltage regulation applications
Offers improved performance over Zener diode/resistor combinations with lower noise

Applications

Local or on-card regulation to eliminate single-point distribution problems
Replacement for Zener diode and resistor combinations
Configuration with power pass elements to create high-current regulators

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm the 'AB' designation corresponds to the ±4% output voltage tolerance and extended industrial temperature range. Ensure the SO-8 package variant matches the required PCB footprint dimensions provided in the mechanical data section of the official datasheet.

Selection Notes

Select this component for applications requiring a compact surface-mount solution with moderate current capabilities. The SO-8 package facilitates automated assembly while maintaining adequate thermal dissipation through internal pin commutation. Consider the 100 mA limit and ensure sufficient heat sinking is available for the expected power dissipation levels under load.

Part Context

This part belongs to the L78Lxx family of low-power positive voltage regulators. Unlike the higher-current L78M or L78 series, the L78L series is optimized for smaller packages like TO-92, SOT-89, and SO-8. The L78L12ABD-TR specifically utilizes the SO-8 form factor, distinguishing it from through-hole variants such as the L78L12ABZ.