TPS61180

更新时间： 2024-11-22 04:48:47

品牌	Logo	应用领域
德州仪器 - TI		驱动器显示器电脑
页数	文件大小	规格书
26页	855K
描述
WLED DRIVER FOR NOTEBOOK DISPLAY

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数据手册
替代型号

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TPS61180 数据手册

TPS61180/1/2

www.ti.com

SLVS801A–DECEMBER 2007–REVISED MARCH 2008

WLED DRIVER FOR NOTEBOOK DISPLAY

FEATURES

•

5 V to 24 V Input Voltage

•

True Shutdown

•

Integrated 1.5 A 40 V MOSFET

Over Voltage Protection

WLED Open/Short Protection

Built-in Soft Start

1.0 MHz/1.3 MHz Switching Frequency

Boost Output Auto-Adaptive to WLED Voltages

Small External Components

16L 3 mm×3 mm QFN

Integrated Loop Compensation

APPLICATIONS

Six Current Sink of 25 mA

•

Notebook LCD Display Backlight

UMPC LCD Display Backlight

Backlight for Media Form Factor LCD display

Up to 10 WLED in Series

Less Than 3% Current Matching and Accuracy

100:1 PWM Brightness Dimming Range

Minimized Output Ripple Under PWM Dimming

Driver for Input/Output Isolation PFET

DESCRIPTION

The TPS61180/1/2 ICs provide highly integrated solutions for media size LCD backlight. These devices have a

built-in high efficiency boost regulator with integrated 1.5A/40V power MOSFET. The six current sink regulators

provide high precision current regulation and matching. In total, the device can support up to 60 WLED. In

addition, the boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.

The devices support pulse width modulation (PWM) brightness dimming. During dimming, the WLED current is

turned on/off at the duty cycle and frequency determined by the PWM signal input on the DCRTL pin. One

potential issue of PWM dimming is audible noises from the output ceramic capacitors. The TPS61180/1/2 family

is designed to minimize this output AC ripple across a wide dimming duty cycle and frequency range; and,

therefore reduce the audible noise.

The TPS61180/1/2 ICs provide a driver output for an external PFET connected between the input and inductor.

During short circuit or over-current conditions, the ICs turn off the external PFET and disconnect the battery from

the WLEDs. The PFET is also turned off during IC shutdown (true shutdown) to prevent any leakage current of

the battery. The device also integrates over-voltage protection, soft-start and thermal shutdown.

The TPS61180 IC requires external 3.3V IC supply, while TPS61181 and TPS61182 ICs have a built-in linear

regulator for the IC supply. All the devices are in a 3×3 mm QFN package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...26

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TPS61180 替代型号

型号	品牌	替代类型	描述	数据表
TPS61181A	TI	功能相似	WLED DRIVER FOR NOTEBOOK DISPLAY

与TPS61180相关器件

型号	品牌	获取价格	描述	数据表
TPS61180_17	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61180RTE	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61180RTER	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61180RTERG4	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61180RTET	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61180RTETG4	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61181	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61181A	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61181ARTE	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY
TPS61181ARTER	TI	获取价格	WLED DRIVER FOR NOTEBOOK DISPLAY

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