BD9271KUT数据手册ROHM中文资料规格书

描述 Description

BD9271KUT是中型、大型LCD背光用白色LED驱动器。本IC可通过SPI控制进行调光。利用SPI通信，可进行LED各CH的ON/OFF、以及Analog调光等的设定。PWM调光信号以外部信号为基础，可通过寄存器进行PWM频率、PWM ON时间、PWM Delay时间的设定。BD9271KUT中内置了应对异常状态的几种保护功能。内置了LED OPEN保护、LED SHORT保护、外接电流设定电阻SHORT保护、外接MOSFETSHORT保护等，可在更宽的输出电压条件及负载条件下使用。

特性 Features

·16-ch constant current driver (external FET(NMOS) is equipped.)
·LED voltage can be set externally.
·PWM dimming and Analogue dimming can be
controlled by SPI.
·LED Abnormal operation detection circuit (OPEN
protection/ SHORT protection) is equipped.
·LED SHORT protection detection voltage is adjustable
(LSP terminal)
·LED SHORT protection detection CH
·FAIL INDICATION function is equipped by ERR_DET
terminal.
·3 lines serial interface
·Package: TQFP64U