TPS75003
www.ti.com
SBVS052A – OCTOBER 2004 – REVISED DECEMBER 2004
Triple-Supply Power Management IC
for Powering FPGAs and DSPs
FEATURES
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Two Buck Controllers Providing up to 3A and
One 300mA LDO for Powering 3 Supplies
Tested and Endorsed by Xilinx for Powering
the Spartan™-3 and Spartan-3L FPGAs
Adjustable (1.2V to 6.5V for Bucks, 0.9V to
6.5V for LDO) Output Voltages on All
Channels
Independent Soft-Start for Each Supply
Independent Enable for Each Supply
LDO Stable with Small 2.2µF Ceramic Output
Cap
Input Voltage Range: 2.2V to 6.5V
Small, Low-Profile 4.5mm x 3.5mm x 0.9mm
QFN Package
DESCRIPTION
The TPS75003 is a complete power management
solution for FPGA, DSP and other multi-supply appli-
cations. The device has been tested with and meets
all of the Xilinx Spartan-3 and Spartan-3L start-up
profile requirements, including monotonic voltage
ramp and minimum voltage rail rise time. Independent
Enables for each output allow sequencing to minimize
demand on the power supply at start-up. Soft-start on
each supply limits inrush current during start-up. Two
integrated
buck
controllers
allow
efficient,
cost-effective voltage conversion for both low and
high current supplies such as core and I/O. A 300mA
LDO is integrated to provide an auxiliary rail such as
V
CCAUX
on the Xilinx Spartan-3 FPGA. All three
supply voltages are offered in user-programmable
options for maximum flexibility.
The TPS75003 is fully specified from -40°C to +85°C
and is offered in a QFN package, yielding a highly
compact total solution size with high power dissi-
pation capability.
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APPLICATIONS
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FPGA Supplies
DSP/ASIC Supplies
Split Supply Applications
TPS75003
IN1
DGND
AGND
SW1
EN1
SS3
SS1
IN1
IS1
EN1
SS1
3A
BUCK1
IS1
SW1
FB1
19
18
17
16
15
14
13
12
IN3
20
DGND
11
FB1
IN2
EN2
SS2
3A
BUCK2
IS2
SW2
FB2
OUT3
1
10
FB2
IN3
OUT3
300mA
LDO
2
3
4
5
6
7
8
9
EN3
FB3
EN3
EN2
SS2
SW2
IN2
DGND
IS2
SS3
FB3
DGND
AGND
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.
Spartan is a trademark of Xilinx, Inc.
All other trademarks are the property of their respective owners.
PRODUCT PREVIEW information concerns products in the forma-
tive or design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the
right to change or discontinue these products without notice.
Copyright © 2004, Texas Instruments Incorporated
PRODUCT PREVIEW
TI [ TEXAS INSTRUMENTS ]
