L4931CZ33 - STMicroelectronics

Manufacturer Part Number

L4931CZ33

Manufacturer

stmicroelectronics

Introduction

The L4931CZ33 from STMicroelectronics is an obsolete linear, low dropout (LDO) regulator designed for power management applications requiring a fixed 3.3V output.

Product Features and Performance

Fixed 3.3V output voltage

Low dropout voltage of 0.8V at 250mA

Quiescent current of 1 mA

Maximum supply current of 6 mA

Power supply rejection ratio (PSRR) ranges from 73dB to 55dB across 120Hz to 10kHz

Operates within a wide temperature range of -40°C to 125°C

Product Advantages

Efficient power regulation with low dropout voltage

Low quiescent current enhances power efficiency

Good noise rejection capabilities across a broad frequency range

Supports overcurrent and overtemperature protection for safety

Key Technical Parameters

Output Type: Fixed

Number of Regulators: 1

Voltage - Input (Max): 20V

Voltage - Output (Min/Fixed): 3.3V

Current - Output: 250mA

Dropout Voltage (Max): 0.8V @ 250mA

Operating Temperature: -40°C ~ 125°C

Quality and Safety Features

Includes safety features such as overcurrent and overheating protection

Compatibility

Mounting Type: Through Hole

Package / Case: TO-226-3, TO-92-3 (TO-226AA)

Application Areas

Designed for low-power electronic devices requiring a stable 3.3V power source

Product Lifecycle

This product is obsolete, indicating a potential limitation in future availability and support. Replacement or upgrade options may be limited.

Several Key Reasons to Choose This Product

Low dropout voltage enables efficient operation even in low-voltage situations

Low quiescent current is advantageous for battery-powered applications

Built-in safety features enhance reliability and extend device lifespan

Operational across a broad range of temperatures, suitable for various environments

Despite being obsolete, it offers a reliable solution for applications with specific voltage regulator requirements