LDK320M50R

$0.46

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

SKU:b92ee54c57e1 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 5V 200MA SOT23-5
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：18V
Voltage - Output (Min/Fixed)：5V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.35V @ 200mA
Current - Output：200mA
Current - Quiescent (Iq)：90 µA
Current - Supply (Max)：100 µA
PSRR：88dB ~ 48dB (120Hz ~ 10kHz)
Control Features：Enable
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：SC-74A, SOT-753
Supplier Device Package：SOT-23-5
Grade：-
Qualification：-

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LDK320M50R

Overview

The LDK320M50R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a nominal output voltage of 5 V with a maximum continuous output current of 200 mA. The device operates from an input voltage range of 2.5 V to 18 V and features a typical dropout voltage of 100 mV at a 100 mA load. It incorporates logic-controlled electronic shutdown functionality, reducing quiescent current to less than 1 μA in the off state. The regulator includes integrated short-circuit current limiting, thermal protection, and safe operating area (SOA) safeguards.

Feature Summary

Logic-controlled electronic shutdown for ultra-low power consumption
Integrated short-circuit current limiting and thermal protection
Compatible with ceramic output capacitors

Applications

Digital signal controllers
Television systems
Blu-ray and DVD players
Personal computers
Industrial equipment

Procurement Notes

Verify the specific suffix 'M' against the manufacturer's official documentation to confirm package type and tolerance specifications. Ensure that the required output voltage accuracy aligns with the standard ±2% tolerance associated with this variant rather than the tighter ±0.5% option. Confirm compatibility with the SOT-23-5L surface-mount footprint during PCB layout.

Selection Notes

Select this component when a stable 5 V rail is required from varying input sources between 2.5 V and 18 V. The device is suitable for battery-powered designs due to its low quiescent current and shutdown capability. Verify that the application requires a fixed output voltage, as adjustable versions utilize different pin configurations. Ensure the thermal environment supports the junction temperature limits specified in the datasheet.

Part Context

This part belongs to the LDK320 family of high-accuracy, high PSRR low-dropout regulators. The series offers various output voltages and packages, including SOT-23-5L and SOT-89. The M suffix typically denotes the standard tolerance version compared to the A suffix which indicates higher precision. The family is designed for applications requiring low noise and fast dynamic response.