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TPS65101PWP

更新时间： 2024-09-28 04:48:43
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德州仪器 - TI 稳压器输出元件
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32页 1536K
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TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER

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TPS65101PWP 数据手册

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TPS65100, TPS65101  
TPS65105  
www.ti.com  
SLVS496C–SEPTEMBER 2003–REVISED APRIL 2006  
TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER  
FEATURES  
DESCRIPTION  
•
•
•
•
2.7-V to 5.8-V Input Voltage Range  
1.6-MHz Fixed Switching Frequency  
3 Independent Adjustable Outputs  
The TPS6510x series 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  
•
•
•
•
•
•
•
•
•
•
•
Virtual Sychronous Converter Technology  
Negative Regulated Charge Pump Driver VO2  
Positive Charge Pump Converter VO3  
Integrated VCOM Buffer  
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  
TPS65100/01 has a typical switch current limit of 2.3  
A, and the TPS65105 has a typical switch current  
limit of 1.37 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.  
Auxiliary 3.3-V Linear Regulator Controller  
Internal Soft Start  
Internal Power-On Sequencing  
Fault Detection of all Outputs (TPS65100/05)  
No Fault Detection (TPS65101)  
Thermal Shutdown  
Available in TSSOP-24 and QFN-24  
PowerPAD™ Packages  
The TPS6510x series has an integrated VCOM  
buffer to power the LCD backplane. For LCD panels  
powered by 5 V only, the TPS6510x series 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 TPS65100/05 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.  
The TPS65101 does not enter shutdown when one  
of the outputs is below its power good threshold.  
APPLICATIONS  
•
•
•
•
•
•
TFT LCD Displays for Notebooks  
TFT LCD Displays for Monitors  
Portable DVD Players  
Tablet PCs  
Car Navigation Systems  
Industrial Displays  
TPS6510x  
V 1  
o
Vin  
Boost  
2.7 V to 5.8 V  
Converter  
Up to 15 V / 400 mA  
V 3  
o
Positive Charge  
Up to 30 V / 20 mA  
Pump  
V 2  
o
Negative  
Charge Pump  
Up to 12 V / 20 mA  
Vcom  
Vcom Buffer  
Linear Regulator  
V 4  
o
Controller  
3.3 V  
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 © 2003–2006, Texas Instruments Incorporated  
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TPS65101PWP 替代型号

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