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参数资料
| 型号： | TPS65148RHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 1/30页 |
| 文件大小： | 947K |
| 代理商： | TPS65148RHBR |
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Function
Gate Voltage Shaping
&
LCD Discharge
Voltage Regulator
for Gamma
VCOM Buffer
(unity gain)
Reset Function
V
GHM
24 V/20mA
V
REG_O
12.5 V/30 mA
V
OPO
±130mA
XAO
V
S
13.6 V/500 mA
-
(Over Voltage Protection)
-
(High Voltage Stress)
Boost Converter
Gate Driver for Input-to-output
Isolation Switch
(Short Circuit Protection)
V
IN
5V
GD
www.ti.com
SLVS904A – MAY 2009 – REVISED JANUARY 2011
Compact TFT LCD Bias IC for Monitor with VCOM Buffer, Voltage Regulator for Gamma
Buffer and Reset Function
Check for Samples: TPS65148
1
FEATURES
VCOM Buffer
2.5V to 6V Input Voltage Range
Reset Function (XAO Signal)
Up to 18V Boost Converter With 4A Switch
LCD Discharge Function
Current
Overvoltage Protection
630kHz/1.2MHz Selectable Switching
Overcurrent Protection
Frequency
Thermal Shutdown
Adjustable Soft-Start for the Boost Converter
32-Pin 5*5mm QFN Package
Gate Driver for External Input-to-Output
Isolation Switch
APPLICATIONS
0.5% Accuracy Voltage Regulator for Gamma
Monitor
Buffer
TV (5V Input Voltage)
Gate Voltage Shaping
DESCRIPTION
The TPS65148 offers a compact power supply solution designed to supply the LCD bias voltages required by
TFT (Thin Film Transistor) LCD panels running from a typical 5 V supply rail. The device integrates a high power
step-up converter for VS (Source Driver voltage), an accurate voltage rail using an integrated LDO to supply the
Gamma Buffer (VREG_O) and a Vcom buffer driving the LCD backplane. In addition to that, a gate voltage shaping
block is integrated. The VGH signal (Gate Driver High voltage) supplied by an external positive charge pump, is
modulated into VGHM with high flexibility by using a logic input VFLK and an external discharge resistor
connected to the RE pin. Also, an external negative charge pump can be set using the boost converter of the
TPS65148 to generate VGL (Gate Driver Low voltage). The integrated reset function together with the LCD
discharge function available in the TPS65148 provide the signals enabling the discharge of the LCD TFT pixels
when powering-off. The device includes safety features like overcurrent protection (OCP) and short-circuit
protection (SCP) achieved by an external input-to-output isolation switch, as well as overvoltage protection (OVP)
and thermal shutdown.
Space between text and graphic
1
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.
Copyright 2009–2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相关代理商/技术参数 |
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|---|---|
| TPS65148RHBT | 功能描述:LCD Gamma缓冲器 Compact TFT LCD Bias IC RoHS:否 制造商:Maxim Integrated 输入补偿电压: 转换速度: 电源电压-最大:20 V 电源电压-最小:9 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-38 封装:Tube |
| TPS65149RSHR | 功能描述:其他电源管理 LCD Bias Solution RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| TPS65150 | 制造商:TI 功能描述:a very compact and small power supply solution that provides all three voltages required by thin film transistor (TFT) LCD displays |
| TPS65150EVM-697 | 功能描述:TPS65150 - Special Purpose DC/DC, LCD Supply 3, Non-Isolated Outputs Evaluation Board 制造商:texas instruments 系列:- 零件状态:有效 主要用途:特殊用途 DC/DC，LCD 电源 输出和类型:3，非隔离 功率 - 输出:- 电压 - 输出:15V，30V，-2V 电流 - 输出:- 电压 - 输入:1.8 V ~ 6 V 稳压器拓扑:升压 频率 - 开关:1.2MHz 板类型:完全填充 所含物品:板 使用的 IC/零件:TPS65150 标准包装:1 |
| TPS65150PWP | 功能描述:LCD 驱动器 Compact LCD Bias Supply IC RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
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