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TPS65141PWPG4 Datasheet(PDF) 1 Page - Texas Instruments

Part # TPS65141PWPG4
Description  TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS65141PWPG4 Datasheet(HTML) 1 Page - Texas Instruments

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background image
Vin
V 1
U
O
p to 15 V / 400 mA
V 3
U
O
p to 30 V / 20 mA
V 2
U
O
p to 12 V / 20 mA
V 4
3.3
O
V
PG
Boost
Converter
Positive Charge
Pump
Negative
Charge Pump
Power Good
Linear Regulator
Controller
TPS6514x
2.7 V to 5.8 V
TPS65140, TPS65141
TPS65145
www.ti.com
SLVS497E – SEPTEMBER 2003 – REVISED NOVEMBER 2012
TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD
Check for Samples: TPS65140, TPS65141, TPS65145
1
FEATURES
DESCRIPTION
2
2.7-V to 5.8-V Input Voltage Range
The TPS6514x series offers a compact and small
1.6-MHz Fixed Switching Frequency
power supply solution to provide all three voltages
3 Independent Adjustable Outputs
required by thin film transistor (TFT) LCD displays.
The auxiliary linear regulator controller can be used
Main Output up to 15 V With <1% Typical
to generate a 3.3-V logic power rail for systems
Output Voltage Accuracy
powered by a 5-V supply rail only.
Virtual Synchronous Converter Technology
The main output VO1 is a 1.6-MHz fixed frequency
Negative Regulated Charge Pump Driver VO2
PWM boost converter providing the source drive
Positive Charge Pump Converter VO3
voltage for the LCD display. The device is available in
Auxiliary 3.3-V Linear Regulator Controller
two versions with different internal switch current
limits to allow the use of a smaller external inductor
Internal Soft Start
when
lower
output
power
is
required.
The
Internal Power-On Sequencing
TPS65140/41 has a typical switch current limit of 2.3
Fault Detection of all Outputs (TPS65140/45)
A and the TPS65145 has a typical switch current limit
of 1.37 A. A fully integrated adjustable charge pump
No Fault Detection (TPS65141)
doubler/tripler provides the positive LCD gate drive
Thermal Shutdown
voltage. An externally adjustable negative charge
System Power Good
pump provides the negative gate drive voltage. Due
to the high 1.6-MHz switching frequency of the
Available in TSSOP-24 and QFN-24
charge
pumps,
inexpensive
and
small
220-nF
PowerPAD™ Packages
capacitors can be used.
APPLICATIONS
Additionally, the TPS6514x series has a system
power good output to indicate when all supply rails
TFT LCD Displays for Notebooks
are acceptable. For LCD panels powered by 5 V the
TFT LCD Displays for Monitors
device has a linear regulator controller using an
Portable DVD Players
external transistor to provide a regulated 3.3 V output
for the digital circuits. For maximum safety, the
Tablet PCs
TPS65140/45 goes into shutdown as soon as one of
Car Navigation Systems
the outputs is out of regulation. The device can be
Industrial Displays
enabled again by toggling the input or the enable
(EN) pin to GND. The TPS65141 does not enter
shutdown when one of its outputs is below its power
good threshold.
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
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2003–2012, 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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