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