L4931CD33-TR - STMicroelectronics

Manufacturer Part Number

L4931CD33-TR

Manufacturer

stmicroelectronics

Introduction

L4931CD33-TR is a low dropout (LDO) regulator designed for stable and reliable power management, housed in an 8-SOIC package for surface mount applications.

Product Features and Performance

Fixed output voltage of 3.3V

Maximum input voltage of 20V

Low dropout voltage of 0.8V at 250mA

Output current capacity of 250mA

Quiescent current of 1 mA

Power Supply Rejection Ratio (PSRR) of 73dB to 55dB between 120Hz and 10kHz

Product Advantages

High-efficiency with low-dropout voltage

Compact 8-SOIC package suitable for space-constrained applications

Robust thermal performance and reliability across a wide operating temperature range from -40°C to 125°C

Key Technical Parameters

Input Voltage (Max): 20V

Output Voltage (Min/Fixed): 3.3V

Voltage Dropout (Max): 0.8V @ 250mA

Current - Output: 250mA

Current - Quiescent (Iq): 1 mA

PSRR: 73dB ~ 55dB (120Hz to 10kHz)

Quality and Safety Features

Over Current Protection

Over Temperature Protection

Compatibility

Compatible with various electronic devices requiring a fixed 3.3V supply, within the input specifications

Application Areas

Ideal for telecommunications, portable devices, and instrumentation requiring stable voltage supply

Product Lifecycle

Current product status is active. Not nearing discontinuation, with ongoing support and availability.

Several Key Reasons to Choose This Product

Stable and consistent 3.3V output under varying load conditions

Energy-efficient operation with low quiescent current

Enhanced safety features protecting against overcurrent and overheating conditions

High PSRR ensuring minimal noise from power supply variations

Broad operating temperature suitable for diverse environmental conditions