TPS63700 Datasheet, PDF (1/22 Pages) Texas Instruments – DC-DC INVERTER

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Actual Size
3 mm x 3 mm
DC-DC INVERTER
TPS63700
SLVS530 – SEPTEMBER 2005
FEATURES
• Adjustable Output Voltage Down to –15 V
• 2.7-V to 5.5-V Input Voltage Range
• Up to 360-mA Output Current
• 1000-mA Typical Switch Current Limit
• Up to 84% Efficiency
• Typical 1.4-MHz Fixed-Frequency PWM
Operation
• Thermal Shutdown
• Typical –19 V Output Overvoltage Protection
• 1.5-µA Shutdown Current
• Small 3-mm x 3-mm SON-10 Package (DRC)
DESCRIPTION
The TPS63700 is an inverting dc-dc converter gener-
ating a negative output voltage down to –15 V with
output currents up to 360-mA, depending on in-
put-voltage to output-voltage ratio. With a total ef-
ficiency up to 84%, the device is ideal for portable
battery-powered equipment. The input voltage range
of 2.7-V to 5.5-V allows the TPS63700 to be directly
powered from a Li-ion battery, from 3-cell NiMH/NiCd,
from a 3.3-V or 5-V supply rail. The TPS63700 comes
in a small 3-mm x 3-mm SON-10 package. Further-
more, the high switching frequency of typically 1.4
MHz allows the use of small external components.
This, and the small package make a small power
supply solution possible.
APPLICATIONS
• Generic Negative Voltage Supply
• Small-to-Medium Size OLED Displays
• PDAs, Pocket PCs, Smartphones
• Bias Supply
The inverter operates with a fixed-frequency PWM
control topology. The device has an internal current
limit, overvoltage protection, and a thermal shutdown
for highest reliability under fault conditions.
R1
C1
0.1 mF
VIN
2.7 V To 5.5 V
C4
10 mF
TPS63700
VIN
VREF
EN
FB
PS_GND
OUT
IN
SW
GND
COMP
PowerPAD
C2
0.22 mF
D1
C6
4.7 nF
L1
4.7 mH
R2
R3
VOUT
−5 V
C5
22 mF
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 © 2005, Texas Instruments Incorporated