BD9470AEFV中文资料中型、大型LCD背光用白色LED驱动器数据手册ROHM规格书

描述 Description

为支持现有客户而生产的产品。不对新设计出售此产品。

特性 Features

· 6chLED constantcurrent driver
· LED maximum output current 250mA
· Individual PWM dimming modulation allowed for LEDs
· ±2%LED current accuracy (when eachLED is set to 130mA)
· Built-inLED feedback voltage automatic adjustment circuit according toLED current
· Built-in start-up circuit independent of PWM light modulation
· built-in VOUT•FB voltage maintenance function when PWM=Low（0%）
· Built-in LED current stabilization circuit while scanning operation is performed
· Built-in VOUT discharge circuitwhile shutdown
· Built-inLED protection(OPEN / SHORT protection)
· Individual detection and individual LED OFF for both open and short circuit
· AdjustableLED short-circuit protection threshold
· PWM-independentLED protection
· VOUT over voltage protection (OVP) and reduced voltage protection(SCP) circuit
· Built-in failure indication function
· Built-inISET pin short-circuit protection circuit

简介

BD9470AEFV属于集成电路（IC）的LED驱动器。由制造生产的BD9470AEFVLED 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。