KA78RM33 - onsemi

Manufacturer Part Number

KA78RM33

Manufacturer

onsemi

Introduction

Low Drop Out (LDO) voltage regulator for power management applications.

Product Features and Performance

Fixed 3.3V output voltage

Low dropout voltage of 0.6V at 500mA load

500mA output current capability

Quiescent current of 5 mA

Maximum supply current of 10 mA

Power supply ripple rejection (PSRR) of 55dB at 120Hz

Includes over current, over temperature, and short circuit protection

Operating temperature range from -40°C to 125°C

Through-hole mounting TO-220-3 package

Product Advantages

High-output voltage accuracy

Stable operation with low dropout voltage

Protection against common fault conditions

Suitable for a wide range of operating temperatures

Low quiescent current for power efficiency

Key Technical Parameters

Voltage - Input (Max): 20V

Voltage - Output (Min/Fixed): 3.3V

Voltage Dropout (Max): 0.6V @ 500mA

Current - Output: 500mA

Current - Quiescent (Iq): 5 mA

Current - Supply (Max): 10 mA

PSRR: 55dB (120Hz)

Quality and Safety Features

Over Current Protection

Over Temperature Protection

Short Circuit Protection

Compatibility

Compatible with a wide range of circuits requiring a 3.3V supply

Through-hole mounting for easy integration in various designs

Application Areas

Consumer Electronics

Industrial Control

Telecommunications

Computing Systems

Energy management

Product Lifecycle

Obsolete

Direct replacement or upgrade may not be available

Several Key Reasons to Choose This Product

Robust protection features for reliability

Excellent thermal performance for varied environments

Low dropout for improved efficiency

Good noise suppression capabilities for sensitive applications

Wide operating temperature range suitable for harsh environments

Easy to integrate into existing designs with TO-220-3 package

Legacy component with established performance track record