AT9919K7-G - Microchip

Manufacturer Part Number

AT9919K7-G

Manufacturer

microchip-technology

Introduction

The AT9919K7-G is a high-performance, high-frequency, and highly-efficient synchronous DC-DC step-down (buck) controller designed for driving high-brightness LEDs in automotive and industrial applications. It provides a single output with support for both analog and PWM dimming.

Product Features and Performance

High frequency operation at 2MHz

Wide input voltage range from 4.5V to 40V

Integrated high-side and low-side MOSFETs

Analog and PWM dimming support

Adjustable switching frequency

Soft-start function

Overcurrent and thermal protection

Supports single LED string or multiple LED strings in parallel

Product Advantages

High efficiency up to 95% reduces power dissipation

High frequency operation enables use of smaller external components

Precise LED current regulation for consistent brightness

Comprehensive protection features ensure reliable operation

Key Reasons to Choose This Product

Optimized for automotive and industrial LED lighting applications

Compact package saves valuable board space

Proven reliability and performance for mission-critical systems

Backed by Microchip's extensive technical support and resources

Quality and Safety Features

AEC-Q100 qualified for automotive applications

Designed to meet stringent automotive EMC and safety requirements

Compatibility

The AT9919K7-G is compatible with a wide range of high-brightness LED modules and lighting fixtures used in automotive and industrial applications.

Application Areas

Automotive headlights, taillights, and daytime running lights

Industrial and commercial LED lighting

General illumination and backlighting applications

Product Lifecycle

The AT9919K7-G is an active product in our website's sales team's portfolio. There are currently no plans for discontinuation, and no direct replacement models have been announced. For the most up-to-date information, please check with your local sales representative or contact our website's sales team.