LK112SM28TR

$0.45

Description：IC REG LINEAR 2.8V 200MA SOT23-5
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)

SKU:d89a9f6e4c8b Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 2.8V 200MA SOT23-5
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：14V
Voltage - Output (Min/Fixed)：2.8V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.5V @ 200mA
Current - Output：200mA
Current - Quiescent (Iq)：250 µA
Current - Supply (Max)：-
PSRR：55dB (400Hz)
Control Features：Enable
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：SC-74A, SOT-753
Supplier Device Package：SOT-23-5
Grade：-
Qualification：-

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LK112SM28TR

Overview

The LK112SM28TR is a low-dropout linear voltage regulator manufactured by STMicroelectronics, providing a fixed 2.8 V output with a maximum continuous current of 200 mA. It operates within an input voltage range of 3.3 V to 14 V and features a maximum dropout voltage of 500 mV at full load. The device incorporates shutdown functionality controlled by TTL or CMOS logic levels, achieving a quiescent current of 250 μA in ON mode and 0.1 μA in OFF mode. It includes internal current and thermal limiting protections, offers ±2% output voltage tolerance at 25 °C, and utilizes an SOT-23-5 surface-mount package suitable for industrial temperature ranges from -40 °C to +125 °C.

Feature Summary

Integrated shutdown function controllable via standard logic levels
Low noise performance with dedicated bypass pin capability
Built-in overcurrent and thermal protection mechanisms

Applications

Battery-powered portable electronic devices
Industrial control systems requiring stable power rails
Embedded sensor modules needing low-noise regulation

Procurement Notes

Verify the specific suffix TR indicates tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the required fixed output voltage of 2.8 V for circuit compatibility.

Selection Notes

Select this component when a compact solution with low quiescent current and shutdown capability is required. The SOT-23-5 package minimizes board space usage compared to larger regulators. Consider the 2.8 V fixed output constraint against system power rail requirements.

Part Context

This part belongs to the LK112S series of low-dropout regulators designed for efficiency and noise reduction. The series supports various fixed output voltages while maintaining consistent electrical characteristics across the family.