ADD5203集成电路（IC）的LED驱动器规格书PDF中文资料

ADD5203属于集成电路（IC）的LED驱动器。由亚德诺半导体技术有限公司制造生产的ADD5203LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。

GENERAL DESCRIPTION

The ADD5203 is a white LED driver for backlight applications based on high efficiency, current-mode, step-up converter technology. It is designed with a 0.15 Ω, 2.9 A internal switch and a pin-adjustable operating frequency between 350 kHz and 1 MHz.

FEATURES

White LED driver based on inductive boost converter

Integrated 50 V MOSFET with 2.9 A peak current limit

Input voltage range: 6 V to 21 V

Maximum output adjustable up to 45 V

350 kHz to 1 MHz adjustable operating frequency

Overvoltage protection (OVP) up to typical 47.5 V

Built-in soft start for boost converter

Drives up to eight LED current strings

LED current adjustable up to 30 mA for each channel

Headroom control to maximize efficiency

Adjustable dimming frequency: 200 Hz to 10 kHz

LED open and short fault protection

Selectable dimming control interface methods

PWM input

SMBus serial input

Selectable dimming modes

Fixed delay PWM dimming control with 8-bit resolution

No delay PWM dimming control with 8-bit resolution

Direct PWM dimming control

DC current dimming control with 8-bit resolution

General

Thermal shutdown

Undervoltage lockout

28-lead, 4 mm × 4 mm × 0.75 mm LFCSP_WQ

APPLICATIONS

Notebook PCs, UMPCs, and monitor displays