REG103GA-3.3/2K5G4 - Texas Instruments

Manufacturer Part Number

REG103GA-3.3/2K5G4

Manufacturer

Texas Instruments

Introduction

The REG103GA-3.3/2K5G4 is a low-dropout (LDO) linear voltage regulator designed for power-sensitive applications, providing a fixed 3.3V output.

Product Features and Performance

LDO Voltage Regulator

Fixed 3.3V output

Single regulator output

Low dropout voltage: 0.28V @ 500mA

High PSRR: 65dB at 120Hz

Current output: 500mA

Includes Enable control feature

Features Over Current and Over Temperature protection

Product Advantages

High power supply rejection ratio (PSRR)

Low quiescent current at 0.7 mA

Minimal dropout voltage for efficient operation

Key Technical Parameters

Voltage Input (Max): 15V

Voltage Output (Min/Fixed): 3.3V

Current Output: 500mA

Voltage Dropout (Max): 0.28V @ 500mA

Quiescent Current (Iq): 0.7 mA

PSRR: 65dB (120Hz)

Quality and Safety Features

Over Current Protection

Over Temperature Protection

Compatibility

Mounting Type: Surface Mount

Package / Case: SOT-223-6

Supplier Device Package: SOT-223-6

Application Areas

Suitable for sensitive power applications requiring stable and reliable power supply

Product Lifecycle

Discontinued at Digi-Key

Customers may need to seek replacements or check for newer alternatives

Several Key Reasons to Choose This Product

Reliable performance under wide input voltage range up to 15V

Low dropout enhances efficiency

Optimum output current capacity of 500mA suitable for moderate loads

Built-in safety protections against temperature and current overloads

High PSRR making it favorable for noise-sensitive applications

Compact surface mount form factor suitable for space-constrained applications