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TPS65100-Q1_16

更新时间： 2024-09-29 02:58:35
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德州仪器 - TI /
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27页 594K
描述
Triple-Output LCD Supply With Linear Regulator

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TPS65100-Q1_16 数据手册

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TPS65100-Q1  
www.ti.com  
SLVS849A –JULY 2008–REVISED APRIL 2012  
TRIPLE-OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER  
Check for Samples: TPS65100-Q1  
1
FEATURES  
DESCRIPTION  
23  
•
Qualified for Automotive Applications  
2.7-V to 5.8-V Input Voltage Range  
1.6-MHz Fixed Switching Frequency  
Three Independently Adjustable Outputs  
The TPS65100 offers a compact and small power  
supply solution that provides 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.  
•
•
•
•
Main Output of up to 15 V With < 1% Output  
Voltage Accuracy  
The main output, VO1, is a 1.6-MHz fixed-frequency  
PWM boost converter providing the source-drive  
voltage for the LCD display. The TPS65100 has a  
typical switch current limit of 2.3 A. A fully integrated  
adjustable charge pump 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 capacitors can be  
used.  
•
•
•
•
•
•
•
•
•
•
Virtual Synchronous Converter Technology  
Negative Regulated Charge Pump Driver VO2  
Positive Charge Pump Converter VO3  
Integrated VCOM Buffer  
Auxiliary 3.3-V Linear Regulator Controller  
Internal Soft Start  
Internal Power-On Sequencing  
Fault Detection of all Outputs  
Thermal Shutdown  
The TPS65100 has an integrated VCOM buffer to  
power the LCD backplane. For LCD panels powered  
by 5 V only, the TPS65100 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 TPS65100 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.  
Available in TSSOP-24 PowerPAD™ Package  
APPLICATIONS  
•
•
•
•
•
•
TFT LCD Displays for Notebooks  
TFT LCD Displays for Monitors  
Portable DVD Players  
Tablet PCs  
Car Navigation Systems  
Industrial Displays  
VO1  
VIN  
2.7 V to 5.8 V  
Boost  
Converter  
Up to 15 V / 400 mA  
VO3  
Positive Charge  
Pump  
Up to 30 V / 20 mA  
VO2  
Negative  
Charge Pump  
Up to 12 V / 20 mA  
VCOM  
VCOM Buffer  
Linear Regulator  
Controller  
VO4  
3.3 V  
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.  
2
3
PowerPAD is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
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 © 2008–2012, Texas Instruments Incorporated  
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