Datasheet > ISL97672_10

ISL97672_10

更新时间： 2024-11-14 12:19:55

品牌	Logo	应用领域
英特矽尔 - INTERSIL		驱动器
页数	文件大小	规格书
17页	380K
描述
6-Channel LED Driver

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ISL97672_10 数据手册

6-Channel LED Driver

ISL97672

Features

• 6 Channels

The ISL97672 is an integrated power LED driver that

controls 6 channels of LED current for LCD backlight

applications. The ISL97672 is capable of driving up to

78 LEDs from 4.5V to 26V or 48 LEDs from a boost

supply of 2.7V to 26V and a separate 5V bias supply on

the VIN pin.

• 4.5V to 26.5V Input

• 45V Output Max

• Up to 40mA LED Current per channel

• Direct PWM Dimming without Phase Shift

• PWM Dimming Linearity 0.4%~100% <30kHz

• Adjustable 200kHz to 1.4MHz Switching Frequency

• Dynamic Headroom Control

The ISL97672 compensates for non-uniformity of the

forward voltage drops in the LED strings with its 6 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 a typical multi-string operation.

• Protections with Flag Indication

- String Open/Short Circuit, V_OUTShort Circuit,

Overvoltage and Over-Temperature Protections

The ISL97672 allows direct PWM mode by following the

external signal from 0Hz to 30KHz at 0.4% to 100% duty

cycle and maintaining a typical ±0.7% current matching

between channels.

- Optional Master Fault Protection

• Current Matching ±0.7%

• 20 Ld 4mmx3mm QFN Package

The ISL97672 features a separate EN pin and extensive

protection functions that flag whenever a fault occurs.

The protections include string open and short circuit

detections, OVP, OTP, thermal shutdown and an optional

input overcurrent protection with fault disconnect switch.

Applications*(see page 16)

• Notebook Displays LED Backlighting

• LCD Monitor LED Backlighting

• Automotive Displays LED Backlighting

• Automotive or Traffic Lighting

Typical Application Circuit

V_OUT= 45V*, 40mA PER STRING

V_IN= 4.5V~26.5V

ISL97672

FAULT

VIN

LX 20

OVP

VDC

COMP

/FLAG

PGND 19

CH0 10

CH1

CH2

CH3

CH4

CH5

PWM

RSET

FSW

* V_IN> 12V

AGND

FIGURE 1. ISL97672 TYPICAL APPLICATION DIAGRAM

June 24, 2010

FN7632.0

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...17

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与ISL97672_10相关器件

型号	品牌	获取价格	描述	数据表
ISL97672A	INTERSIL	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability
ISL97672AIRZ	INTERSIL	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability
ISL97672AIRZ	RENESAS	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability; QFN20; Temp Range: -40° to
ISL97672AIRZ-EVAL	INTERSIL	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability
ISL97672AIRZ-T	INTERSIL	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability
ISL97672AIRZ-TK	RENESAS	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability; QFN20; Temp Range: -40° to
ISL97672B	INTERSIL	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability
ISL97672B	RENESAS	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability
ISL97672BIRZ	INTERSIL	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability
ISL97672BIRZ-EVAL	INTERSIL	获取价格	6-Channel LED Driver with Ultra Low Dimming Capability

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