General Description

This IC is a white LED driver for LCD backlight.

It has MOS for boost and 4 ch current drivers for LED drive,

making it ideal for high brightness LED drive. LED pin

maximum voltage is 50 V, making it suitable for driving

medium LCD panels.

The dimming is controlled by the PWM signal and can be

set up to 20,000: 1@100 Hz. It also supports analog

dimming and can accommodate even higher brightness

ranges by combining with PWM dimming. DC/DC

converters can be controlled for boost applications, and the

input operating voltage range is 4.5 V to 48.0 V.

特性 Features

? AEC-Q100 Qualified(Note 1)

? Functional Safety Supportive Automotive Products

? Built-in 4 ch Current Driver for LED Driver

? Built-in MOS for Boost

? Current Mode Boost DC/DC Converter

? Load Switch (M1) Control Pin

? DC Dimming Function by Pulse Input

? PWM Dimming

(20,000: 1@100 Hz, 100 Hz to 25 kHz)

? Spread Spectrum Function

? DC/DC Oscillation Frequency External Synchronization

Function

? LSI Protect Functions (UVLO, OVP, TSD, OCP)

? LED Anode/Cathode Short Circuit Protection Function

? LED Open/Short Protection Function

(Note 1) Grade 1