LDLN025M45R - STMicroelectronics

Manufacturer Part Number

LDLN025M45R

Manufacturer

stmicroelectronics

Introduction

The LDLN025M45R is a fixed output, low dropout (LDO) voltage regulator from stmicroelectronics, specifically designed for optimum performance in Power Management applications.

Product Features and Performance

Fixed output voltage of 4.5V

Low dropout voltage of 0.2V at 250mA load

Low quiescent current of 25 µA

High power supply rejection ratio (PSRR) ranging from 80dB to 60dB across 100Hz to 100KHz

Thermal shutdown and current limit for device protection

Product Advantages

High efficiency due to low dropout voltage

Stable performance with low quiescent current aiding in power conservation

Enhanced line and load regulation via PSRR

Key Technical Parameters

Input Voltage (Max): 5.5V

Output Voltage: 4.5V

Dropout Voltage: 0.2V @ 250mA

Output Current: 250mA

Quiescent Current (Iq): 25 µA

Supply Current (Max): 425 µA

Operating Temperature: -40°C ~ 125°C

Quality and Safety Features

Over Current Protection

Over Temperature Protection

Short Circuit Protection

Soft Start feature to minimize inrush current

Compatibility

Package/Case: SC-74A, SOT-753

Mounting type: Surface Mount

Application Areas

Suitable for battery-powered devices

Telecommunication infrastructure

Portable consumer electronics

Healthcare and medical equipment

Product Lifecycle

Status: Active

Not nearing discontinuation and current replacements or upgrades are available

Several Key Reasons to Choose This Product

Low dropout voltage facilitates efficient use in low voltage applications

Extended operational temperature range suitable for harsh environments

Compact SOT-23-5 packaging suitable for space-constrained applications

Robust built-in safety features ensure long-term reliability

Optimized for high-frequency operations with excellent PSRR characteristics