Datasheet > TPS65142

TPS65142

更新时间： 2024-09-28 11:58:27

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
32页	2934K
描述
LCD Bias Power Integrated with WLED Backlight Drivers

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TPS65142 数据手册

TPS65142

www.ti.com

SLVSAX5 –JULY 2011

LCD Bias Power Integrated with WLED Backlight Drivers

Check for Samples: TPS65142

•

Overvoltage Protection

Thermal Shutdown

Undervoltage Lockout

32-Pin 6 x 3 mm²QFN Package

FEATURES

•

Integrated Bias and Backlight Power

2.3 V to 6 V Input Voltage Range for Bias

–

Up to 16.5 V Boost Converter with 1.8 A

Switch Current

APPLICATIONS

•

–

1.2 MHz/650 kHz Selectable Switching

Frequency

Note-PC TFT-LCD Panels

Tablet TFT-LCD Panels

–

Internal Compensation

Internal Soft-start at Power on

Reset Function (XAO Signal)

Regulated VGH

Regulated VGL

Gate Voltage Shaping

LCD Discharge Function

DESCRIPTION

The TPS65142 provides a compact solution to the

bias power and the WLED backlight in note-pc

TFT-LCD panels. The device features

converter, a positive charge pump regulator, and a

negative charge pump regulator to power the source

drivers and the gate drivers. A 150mA unity-gain

high-speed buffer is offered to drive the VCOM plane.

Gate voltage shaping and the LCD discharge function

are offered to improve the image quality. A reset

function allows a proper reset of the TCON at the

power on. The TPS65142 also offers the complete

solution to driver up to 6 chains of WLEDs with

1000:1 ratio PWM dimming.

a boost

•

150 mA Unity Gain VCOM Buffer

4.5 V to 24 V WLED Backlight Input Range

–

Integrated 1.5 A/40 V MOSFET

Boost Output Tracks WLED Voltage

Internal Compensation

External Current Setting Input

6 Current-Sink Channels of 25 mA

Better than 3% Current Matching

Up to 1000:1 PWM Dimming Range

All features are integrated in a compact 6 x 3 mm²

Thin QFN package.

SPACER

AVDD

9 V/300 mA

3.3 V

AVDD Boost Converter

Positive Charge Pump Regulator,

Gate Voltage Shaping

LCD Discharge Function

GHM

24 V/20 mA

-6 V/20 mA

Negative Charge Pump Regulator

Reset Function

XAO

COM

(±±50 mAꢀ

Unity Gain VCOM Buffer

BL_PWR

4.5 V to 24 V

IFB

25 mA

WLED Boost Converter

With Current Sinks

PWM_DIM

BL_EN

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...32

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与TPS65142相关器件

型号	品牌	获取价格	描述	数据表
TPS65142RTGR	TI	获取价格	LCD Bias Power Integrated with WLED Backlight Drivers
TPS65145	TI	获取价格	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
TPS65145IPWPRQ1	TI	获取价格	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
TPS65145PWP	TI	获取价格	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
TPS65145PWPG4	TI	获取价格	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
TPS65145PWPR	TI	获取价格	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
TPS65145PWPRG4	TI	获取价格	4-CH LCD Bias w/ Fully Int. Pos. Charge Pump, 3.3V LDO Contr., 0.96A Min. Boost Ilim &
TPS65145-Q1	TI	获取价格	具有故障检测功能的汽车类 2.7V 至 5.8V、4 通道 LCD 电源
TPS65145RGE	TI	获取价格	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
TPS65145RGER	TI	获取价格	TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD

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