參數(shù)資料
型號： TPS65170RHDT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 4.2 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC28
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-28
文件頁數(shù)： 1/35頁
文件大?。?/td> 4698K
代理商： TPS65170RHDT
IsolationSwitch
Control
Boost
Converter
Buck
Converter
Positive
LDOController
Negative
LDOController
Reset
Generator
www.ti.com
SLVSA27 – OCTOBER 2009
LCD Bias Supply
Check for Samples :TPS65170
The TPS65170 also provides a reset circuit that
1
FEATURES
monitors the buck converter output (VLOGIC) and
8.6V to 14.7V Input Voltage Range
generates a reset signal for the timing controller
2.8A Boost Converter Switch Current Limit
during power-up.
Boost Converter Output Voltages up to 18.5V
A control signal can also be generated to control an
Boost and Buck Converter Short-Circuit
external MOSFET isolation switch located between
Protection
the output of the boost converter and the display
panel.
1.5A Buck Converter Switch Current Limit
Fixed 750kHz Switching Frequency for Buck
and Boost Converters
Fixed Buck Converter Soft-Start
Programmable Boost Converter Soft-Start
Two Charge Pump Controllers to Regulate VGH
and VGL
Control Signal for External High-Side MOSFET
Isolation Switch
Reset Signal With Programmable Reset Pulse
Duration
Thermal Shutdown
28-Pin 5×5 mm QFN Package
APPLICATIONS
LCD TVs and Monitors
DESCRIPTION
The TPS65170 provides a simple and economic
power supply solution for a wide variety of LCD bias
applications.
In typical display panel applications, the boost
converter
generates
the
display
panel’s
source
voltage
VS, the buck converter generates the
system’s logic supply VLOGIC, and the two charge
pump controllers regulate the external charge pumps
generating the display transistors’ on and off supplies
VGH and VGL.
By using external transistors to regulate the charge
pump output voltage, power dissipation in the IC is
significantly reduced, simplifying PCB thermal design
and improving reliability.
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, 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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相關代理商/技術參數(shù)
參數(shù)描述
TPS65171RHAR 功能描述:LCD 驅動器 Compact LCD Bias RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65175ARSHR 制造商:Texas Instruments 功能描述:LCD BIAS CHIP AND LEVEL SHIFTE 制造商:Texas Instruments 功能描述:IC BIAS PWR SUPP FOR LCD 56VQFN 制造商:Texas Instruments 功能描述:Fully Programmable LCD Bias IC
TPS65175CRSHR 功能描述:LCD TV/Monitor PMIC 56-VQFN (7x7) 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 應用:LCD 電視機/監(jiān)控器 電流 - 電源:- 電壓 - 電源:8.6 V ~ 14.7 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應商器件封裝:56-VQFN（7x7） 標準包裝:1
TPS65175RSHR 功能描述:LCD 驅動器 Fully Programmable LCD Bias IC RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65176RHDR 功能描述:其他電源管理 LCD BIAS IC FOR TV RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
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