LM51551DSST - Texas Instruments

Manufacturer Part Number

LM51551DSST

Manufacturer

Texas Instruments

Introduction

The LM51551DSST is a high-performance, synchronous step-up/step-down (buck-boost) DC/DC controller from Texas Instruments. It is designed to provide a regulated output voltage from a wide range of input voltages.

Product Features and Performance

Wide input voltage range: 2.97V to 45V

Switching frequency range: 100kHz to 2.2MHz

Supports boost, flyback, and SEPIC topologies

Integrated high-side and low-side MOSFET drivers

Soft-start function for controlled startup

Clock synchronization capability

Maximum duty cycle of 96%

Single-phase operation

Thermally enhanced 12-WSON (3x2) package

Product Advantages

Wide input voltage range for versatile applications

High-efficiency power conversion

Flexible topology support

Integrated driver simplifies design

Soft-start and clock sync for system-level optimization

Small, thermally enhanced package

Key Technical Parameters

Input voltage range: 2.97V to 45V

Switching frequency: 100kHz to 2.2MHz

Maximum duty cycle: 96%

Output configuration: Positive

Synchronous rectifier: No

Number of outputs: 1

Quality and Safety Features

RoHS3 compliant

Suitable for industrial and automotive applications

Compatibility

The LM51551DSST is compatible with a wide range of electronic systems and devices that require a regulated power supply within its input and output specifications.

Application Areas

Industrial equipment

Automotive electronics

Portable devices

Power supplies

Battery-powered systems

Product Lifecycle

The LM51551DSST is an active product from Texas Instruments and is not nearing discontinuation. Replacement or upgrade options may be available as technology evolves.

Key Reasons to Choose This Product

Wide input voltage range for versatile applications

High-efficiency power conversion with flexible topology support

Integrated driver simplifies design and reduces component count

Soft-start and clock synchronization for system-level optimization

Small, thermally enhanced package for compact designs

RoHS3 compliance for use in a variety of applications