Datasheet > HV9910B

HV9910B

更新时间： 2024-10-01 02:55:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
15页	375K
描述
Universal High-Brightness LED Driver

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HV9910B 数据手册

HV9910B

Universal High-Brightness LED Driver

Features

Description

• Switch mode controller for single switch LED drivers

• Enhanced drop-in replacement to the HV9910

• Open loop peak current controller

HV9910B is an open loop, current mode control, LED

driver IC. This IC can be programmed to operate in

either a constant frequency or constant off-time mode.

It includes an 8.0 - 450V linear regulator which allows it

to work from a wide range of input voltages without the

need for an external low voltage supply. HV9910B

includes a PWM-dimming input that can accept an

external control signal with a duty ratio of 0 - 100% and

a frequency of up to a few kilohertz. It also includes a 0

- 250mV linear dimming input which can be used for lin-

ear dimming of the LED current.

• Internal 8.0 to 450V linear regulator

• Constant frequency or constant off-time operation

• Linear and PWM dimming capability

• Requires few external components for operation

Applications

• DC/DC or AC/DC LED driver applications

• RGB backlighting LED driver

• Back lighting of flat panel displays

• General purpose constant current source

• Signage and decorative LED lighting

• Chargers

HV9910B is ideally suited for buck LED drivers. Since

the HV9910B operates in open loop current mode con-

trol, the controller achieves good output current regula-

tion without the need for any loop compensation. PWM

dimming response is limited only by the rate of rise and

fall of the inductor current, enabling very fast rise and

fall times. HV9910B requires only three external com-

ponents, apart from the power stage, to produce a con-

trolled LED current. This makes HV9910B an ideal

solution for low cost LED drivers.

 2015 Microchip Technology Inc.

DS20005344A-page 1

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与HV9910B相关器件

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HV9910B_08	SUPERTEX	获取价格	Universal High Brightness LED Driver
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HV9910CLG-G	SUPERTEX	获取价格	The HV9910C is an open loop, current mode, control LED driver IC.