Datasheet > HV9961

HV9961

更新时间： 2024-10-01 14:55:11

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
20页	1078K
描述
The HV9961 is an average current mode control LED driver IC operating in a constant off-time mode.

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HV9961 数据手册

HV9961

LED Driver with Average-Current Mode

Constant-Current Control

Features

General Description

• Fast Average Current Control

• Programmable Constant Off-time Switching

• Linear Dimming Input

The HV9961 is an Average-Current mode

constant-current control LED driver IC operating in a

constant Off-time mode. Unlike the HV9910B, this

control IC does not produce a peak-to-average error.

This greatly improves accuracy as well as the line and

load regulations of the LED current without any need

for loop compensation or high-side current sensing. Its

output LED current accuracy is ±3%.

• PWM Dimming Input

• Output Short-circuit Protection with Skip Mode

•

–40°C to +125°C Ambient Operating

Temperature

• Pin-compatible with HV9910B

The IC is equipped with a current limit comparator for

Hiccup mode output short-circuit protection.

Applications

The HV9961 can be powered from an 8V–450V supply.

It has a PWM dimming input that accepts an external

control TTL-compatible signal. In addition, the output

current can be programmed by an internal 275 mV

reference or controlled externally through a 0V–1.5V

linear dimming input.

• DC/DC or AC/DC LED Driver Applications

• LED Backlight Driver for LCD Displays

• General Purpose Constant-current Source

• LED Signage and Displays

• Architectural and Decorative LED Lighting

• LED Street Lighting

The HV9961 is pin-to-pin compatible with HV9910B,

and it can be used as a drop-in replacement for many

applications to improve LED current accuracy and

regulation.

Package Types

16-lead SOIC

(Top view)

VIN

8-lead SOIC

(Top view)

VIN

GND

VDD

GND

GATE

VDD

PWMD

GATE

PWMD

See Table 2-1 for pin information.



2017-2022 Microchip Technology Inc. and its subsidiaries

DS20005588B-page 1

12 3 4 5 6 7...20

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