LM5155DSSR - Texas Instruments

Manufacturer Part Number

LM5155DSSR

Manufacturer

Texas Instruments

Introduction

The LM5155DSSR is an integrated power management controller designed for DC-DC conversion, capable of driving transistors in various configurations, well-suited for applications requiring efficient power regulation.

Product Features and Performance

Wide input voltage range of 2.97V to 45V

Adaptable for step-up or step-down applications

Configurable for boost, flyback, or SEPIC topologies

Single output with one output phase

Adjustable switching frequency from 100kHz to 2.2MHz

Maximum duty cycle of 93%

Lacks a synchronous rectifier

Features clock synchronization

Includes soft-start control feature

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

Surface mount package for ease of integration

12-WFDFN package with exposed pad for thermal management

Product Advantages

Flexible voltage range and topology options for diverse applications

High frequency switching capability for improved efficiency and reduced size

Soft-start minimizes in-rush current and system stress during startup

Clock synchronization enables power supply noise reduction and system coordination

Key Technical Parameters

Output Type: Transistor Driver

Function: Step-Up, Step-Up/Step-Down

Output Configuration: Positive

Topology: Boost, Flyback, SEPIC

Number of Outputs: 1

Voltage - Supply (Vcc/Vdd): 2.97V ~ 45V

Frequency - Switching: 100kHz ~ 2.2MHz

Duty Cycle (Max): 93%

Operating Temperature: -40°C ~ 125°C (TJ)

Quality and Safety Features

Built to withstand industrial temperature ranges

Robust packaging for reliability

Compatibility

Compatible with a wide array of external components and circuit designs due to its flexibility in voltage range and topology

Application Areas

Power supplies for industrial and commercial systems

Automotive electronics

Battery-powered applications

Portable devices

Renewable energy systems

Product Lifecycle

Product Status: Active

Not near discontinuation and continues to have replacements or upgrades available

Several Key Reasons to Choose This Product

Robust input voltage suitability for various applications

High-level design versatility with multiple topology support

Efficient power switching capabilities enhancing overall system performance

High reliability and longevity in extreme temperature environments

Ease of integration into various circuit designs due to the surface mount package

The trusted manufacturer with a reputation for quality in power management technology