REG103GA-3.3 - Texas Instruments

Manufacturer Part Number

REG103GA-3.3

Manufacturer

Texas Instruments

Introduction

The REG103GA-3.3 is a low dropout (LDO) voltage regulator, part of Texas Instruments' power management ICs designed for powering sensitive digital ICs from a single input voltage source.

Product Features and Performance

Low dropout voltage: 0.28V at 500mA load

Fixed output voltage of 3.3V

Output current capability of 500mA

Quiescent current of 0.7mA

Maximum supply current of 1.3mA

Power supply rejection ratio (PSRR) of 65dB at 120Hz

Enable control feature for power savings

Overcurrent and overtemperature protection

Product Advantages

Efficient operation with low dropout voltage, allowing closer voltage regulation.

Low quiescent current ensures minimal power consumption when idle.

High PSRR value offers stable operation amidst fluctuations in input voltage.

Built-in protection features enhance the safety and reliability of the device.

Enable control functionality provides additional power management flexibility.

Key Technical Parameters

Voltage Input (Max): 15V

Voltage Output (Min/Fixed): 3.3V

Current Output: 500mA

Voltage Dropout (Max): 0.28V @ 500mA

Current Quiescent (Iq): 0.7 mA

PSRR: 65dB (120Hz)

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Overcurrent protection prevents damage from excessive loads.

Overtemperature protection ensures safe operation under thermal stress.

Compatibility

General compatibility with a wide range of digital ICs requiring 3.3V.

Surface mount SOT-223-6 package fits standard PCB layouts.

Application Areas

Digital logic circuits

Microcontrollers and digital processors

Battery-powered devices

Portable electronics

Product Lifecycle

Product Status: Last Time Buy, indicating nearing discontinuation.

Availability of replacements or upgrades should be checked with Texas Instruments directly.

Several Key Reasons to Choose This Product

High efficiency and low dropout performance ideal for sensitive digital loads.

Low power consumption suits battery-operated applications.

Robust protection features for enhanced reliability.

Easy integration due to standardized SOT-223-6 packaging.

Supported by Texas Instruments’ reputation for quality and support, albeit nearing end of its production life.