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參數(shù)資料
| 型號(hào)： | TPS65140RGE |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD |
| 中文描述： | 三路輸出液晶供應(yīng)線性穩(wěn)壓器和電源良好 |
| 文件頁(yè)數(shù)： | 1/24頁(yè) |
| 文件大小： | 865K |
| 代理商： | TPS65140RGE |
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www.ti.com
FEATURES
2.7-V to 5.8-V Input Voltage Range
1.6-MHz Fixed Switching Frequency
3 Independent Adjustable Outputs
Main Output up to 15 V With <1% Typical
Output Voltage Accuracy
Negative Output Voltage Down to -12 V/20 mA
Positive Output Voltage up to 30 V/20 mA
Auxiliary 3.3-V Linear Regulator Controller
Internal Soft Start
Internal Power-On Sequencing
Fault Detection of all Outputs
Thermal Shutdown
System Power Good
Available in TSSOP-24 and QFN-24
PowerPAD Packages
DESCRIPTION
The TPS65140/145 offers a compact and small
power supply solution to provide all three voltages
required by thin film transistor (TFT) LCD displays.
The auxiliary linear regulator controller can be used
to generate a 3.3-V logic power rail for systems
powered by a 5-V supply rail only.
APPLICATIONS
TFT LCD Displays for Notebooks
TFT LCD Displays for Monitors
Portable DVD Players
Tablet PCs
Car Navigation Systems
Industrial Displays
Vin
Vo1
Up to 15 V / 400 mA
Vo3
Up to 30 V / 20 mA
Power Good
Vo2
Up to 12 V / 20 mA
Vo4
3.3 V
Boost
Converter
Positive Charge
Pump
Negative
Charge Pump
Power Good
Linear Regulator
Controller
TPS65140/45
2.7 V to 5.8 V
TPS65140
TPS65145
SLVS497B–SEPTEMBER 2003–REVISED MARCH 2004
TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
The main output Vo1 is a 1.6-MHz fixed frequency
PWM boost converter providing the source drive
voltage for the LCD display. The device is available in
two versions with different internal switch current
limits to allow the use of a smaller external inductor
when lower output power is required. The TPS65140
has a typical switch current limit of 2.3 A and the
TPS65145 has a typical switch current limit of 1.37 A.
A
fully
integrated
adjustable
doubler/tripler provides the positive LCD gate drive
voltage. An externally adjustable negative charge
pump provides the negative gate drive voltage. Due
to the high 1.6-MHz switching frequency of the
charge pumps, inexpensive and small 220-nF capaci-
tors can be used.
charge
pump
Additionally, the TPS65140/145 has a system power
good output to indicate when all supply rails are
acceptable. For LCD panels powered by 5 V, only the
TPS65140/145 has a linear regulator controller using
an external transistor to provide a regulated 3.3 V
output for the digital circuits. For maximum safety, the
entire device goes into shutdown as soon as one of
the outputs is out of regulation. The device can be
enabled again by toggling the input or the enable
(EN) pin to GND.
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.
PowerPAD is a trademark of Texas Instruments.
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.
Copyright 2003–2004, Texas Instruments Incorporated
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS65145RGE | TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD |
| TPS65552ARGT | INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER |
| TPS6734I | FIXED 12-V 120-mA BOOST-CONVERTER SUPPLY |
| TPS6735D | FIXED NEGATIVE 5-V 200-mA INVERTING DC/DC CONVERTER |
| TPS6735P | FIXED NEGATIVE 5-V 200-mA INVERTING DC/DC CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS65140RGER | 功能描述:LCD 驅(qū)動(dòng)器 Trp-Ch 2.1-A Swit Boost Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)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 |
| TPS65140RGERG4 | 功能描述:LCD 驅(qū)動(dòng)器 Trp-Ch 2.1-A Swit Boost Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)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 |
| TPS65141PWP | 功能描述:LCD 驅(qū)動(dòng)器 5V/1.6A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)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 |
| TPS65141PWPG4 | 功能描述:LCD 驅(qū)動(dòng)器 5V/1.6A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)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 |
| TPS65141PWPR | 功能描述:LCD 驅(qū)動(dòng)器 5V/1.6A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)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 |
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