LM5143QRWGRQ1 - Texas Instruments

Manufacturer Part Number

LM5143QRWGRQ1

Manufacturer

Texas Instruments

Introduction

Automotive-Grade Dual-Channel Synchronous Buck DC/DC Controller

Product Features and Performance

Integrated High-Side and Low-Side MOSFET Drivers

Dual-Channel with 180° Out-of-Phase Operation

Wide Input Voltage Range from 3.5V to 65V

High-Efficiency Synchronous Buck Operation

Adjustable Switching Frequency from 100kHz to 2.2MHz

Supports 100% Duty Cycle for Low-Dropout Operation

Adaptive Dead-Time and Zero-Shoot-Through Control

Programmable Soft-Start Function

Precision Enable Threshold for Adjustable Line Undervoltage Lockout

Voltage Feed-Forward Compensation for Enhanced Transient Response

Cycle-by-Cycle Current Limit and Hiccup Mode Overcurrent Protection

Thermal Shutdown

Product Advantages

Optimized for Automotive Power Supplies

Reduces External Component Count and System Size

Low EMI with Optional Spread Spectrum Operation

Supports Pre-Bias Start-Up

Suitable for Harsh Automotive Environments

AEC-Q100 Qualified

Key Technical Parameters

Output Type: Transistor Driver

Function: Step-Down

Topology: Buck

Number of Outputs: 2

Output Phases: 2

Voltage - Supply (Vcc/Vdd): 3.5V ~ 65V

Frequency - Switching: 100kHz ~ 2.2MHz

Duty Cycle (Max): 100%

Synchronous Rectifier: Yes

Clock Sync: Yes

Control Features: Current Limit, Dead Time Control, Enable, Frequency Control, Power Good, Soft Start

Operating Temperature: -40°C ~ 150°C (TJ)

Quality and Safety Features

Thermal Shutdown

Overcurrent Protection

Pre-Bias Start-Up Capability

Automotive Grade and AEC-Q100 Certification

Compatibility

Compatible with High-Side and Low-Side N-Channel MOSFETs

Application Areas

Automotive Infotainment and Telematics

Advanced Driver Assistance Systems (ADAS)

Automotive Power Supplies, Including ECU and Sensors

Automotive Lighting Systems

Product Lifecycle

Status: Active

Not Nearing Discontinuation

Replacements or Upgrades Possibly Available as Technology Progresses

Several Key Reasons to Choose This Product

High Flexibility with Wide Input Voltage Range and Dual Outputs

Highly Configurable with Adjustable Switching Frequency and Control Features

Designed for Challenging Automotive Environments

Enhanced Safety Features for Reliable Performance

Supports High-Temperature Operation up to 150°C

High Integration Reducing Design Complexity and Time to Market

Superior Power Efficiency for Automotive Applications

Surface Mount, Wettable Flank Package for Robust PCB Mounting