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TPS65130, TPS65131
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www.ti.com
SLVS493B–MARCH 2004–REVISED SEPTEMBER 2004
POSITIVE AND NEGATIVE OUTPUT DC-DC CONVERTER
FEATURES
APPLICATIONS
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Small to Medium Size OLED Displays
(TFT) LCD and CCD Bias Supply
PDAs, Pocket PCs, Smartphones
Digital Cameras
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Dual Adjustable Output Voltages Up to +15 V
and Down to –15 V
800-mA Typical Switch Current Limit at Boost
and Inverter Main Switches at TPS65130
Camcorders
2-A Typical Switch Current Limit at Boost and
Inverter Main Switches at TPS65131
DESCRIPTION
Up to 89% Efficiency at Positive Output
Voltage Rail
The TPS65130/1 is dual-output dc-dc converter gen-
erating a positive output voltage up to 15 V and a
negative output voltage down to -15 V with output
currents in a 200-mA range in typical applications,
depending on input voltage to output voltage ratio.
With a total efficiency up to 85%, the device is ideal
for portable battery-powered equipment. The input
Up to 81% Efficiency at Negative Output
Voltage Rail
Power-Save Mode for High Efficiency at Low
Load Currents
Independent Enable Inputs for Power Up and
Power Down Sequencing
voltage range of 2.7
V to 5.5 V allows the
TPS65130/1 to be directly powered from a Li-ion
battery, from 3 cells NiMH/NiCd or alkaline batteries.
The TPS65130/1 comes in a small 4 mm x 4 mm
QFN-24 package. Together with a minimum switching
frequency of 1.25 MHz it enables designing small
power supply applications because it requires only a
few small external components.
Control Output for External PFET to Support
Completely Disconnecting the Battery
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2.7-V to 5.5-V Input Voltage Range
Minimum 1.25-MHz Fixed Frequency PWM
Operation
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Thermal Shutdown
Overvoltage Protection on Both Outputs
1-µA Shutdown Current
Small 4 mm x 4 mm QFN-24 Package (RGE)
Q1
L1
D1
V
POS
4.7 mH
R1
R2
C4
22 mF
U1
C1
4.7 mF
INP
VPOS
FBP
BSW
INN
C8
0.22 mF
R4
VREF
FBN
R3
R7
VIN
C2
4.7 mF
ENP
PSP
ENN
PSN
GND
VNEG
OUTN
CP
V
NEG
C3
0.1 mF
D2
L2
4.7 mH
C5
22 mF
CN
C6
C7
PGND
TPS65130
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 © 2004, Texas Instruments Incorporated