Datasheet > ISL97675

ISL97675

更新时间： 2024-11-09 05:39:47

品牌	Logo	应用领域
英特矽尔 - INTERSIL		驱动器
页数	文件大小	规格书
20页	544K
描述
4-Channel LED Driver with Phase Shift Control

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中文翻译

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数据手册

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ISL97675 数据手册

4-Channel LED Driver with Phase Shift Control

ISL97675

Features

• 4 x 30mA Channels

• 45V Output Max

• 4.5V to 26V Input

The ISL97675 is an LED driver that drives 4 channels of

low power LEDs from 4.5V to 26V input and up to 45V

output.

The ISL97675 compensates for non-uniformity of the

forward voltage drops in the LED strings with its 4 voltage

controlled-current source channels. Its headroom control

monitors the highest LED forward voltage string for output

regulation, to minimize the voltage headroom and power

loss in the typical multi-string operation.

• Channel Phase Shift PWM Dimming with 8-bit

resolution

• 0.007% Direct PWM dimming at 200Hz

• Current Matching of ±1.5% from 1% ~ 100% Dimming

• Dynamic Headroom Control

• Protections

- String Open/Short Circuit, V_OUTShort Circuit

Overvoltage, and Over-temperature Protections

The ISL97675 offers two PWM Dimming modes: The part

digitizes the incoming 100Hz to 30kHz PWM signal and

provides 8-bit PWM dimming with phase shift function.

Another mode is direct PWM mode without phase shift,

where the dimming frequency follows the input PWM

signal and the minimum on time can be as short as 350ns.

- Optional Master Fault Protection

• Selectable 600kHz or 1.2MHz Switching Frequency

• 20 Ld QFN 4mmx4mm Package

The ISL97675 features channel phase shift control to

minimize the input, output ripple characteristics and load

transients as well as spreading the light output to help

eliminate or reduce the video and audio noise interference

from the backlight driver operation.

Applications*(see page 19)

• Netbook Displays LED Backlighting

• Notebook Displays LED Backlighting

Typical Application Circuit

= 45V max*

OUT

= 30mA PER STRING

LED

* = 4.5V~26V

ISL97675

FAULT

VIN

OVP

VDDIO

PGND

FSW/Phase Shift

PWM

FB1

FB2

COMP

RFPWM/DirectPWM

ISET

FB3

FB4

AGND

* V ≥ 6V

May 19, 2010

FN7630.0

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...20

中文翻译

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与ISL97675相关器件

型号	品牌	获取价格	描述	数据表
ISL97675IRZ	INTERSIL	获取价格	4-Channel LED Driver with Phase Shift Control
ISL97675IRZ	RENESAS	获取价格	4-Channel LED Driver with Phase Shift Control; QFN20; Temp Range: -40° to 85&d
ISL97675IRZ-TK	RENESAS	获取价格	4-Channel LED Driver with Phase Shift Control; QFN20; Temp Range: -40° to 85&d
ISL97676	INTERSIL	获取价格	6-Channel LED Driver with Phase Shift Control
ISL97676IRZ	INTERSIL	获取价格	6-Channel LED Driver with Phase Shift Control
ISL97676IRZ	RENESAS	获取价格	6-Channel LED Driver with Phase Shift Control; QFN20; Temp Range: -40° to 85&d
ISL97676IRZ-T	RENESAS	获取价格	6-Channel LED Driver with Phase Shift Control; QFN20; Temp Range: -40° to 85&d
ISL97676IRZ-T13	RENESAS	获取价格	LED DISPLAY DRIVER
ISL97677	INTERSIL	获取价格	SMBus/I2C 8-Channel LED Driver
ISL97677IRZ	INTERSIL	获取价格	SMBus/I2C 8-Channel LED Driver

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