Texas Instruments TPS54810 Specification Sheet

www.ti.com
4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK PWM
SWITCHER WITH INTEGRATED FETS (SWIFT™)
FEATURES
D
30-mΩ MOSFET Switches for High Efficiency
at 8-A Continuous Output
D
0.9-V to 3.3-V Adjustable Output Voltage
Range With 1% Accuracy
D
Externally Compensated
D
Fast Transient Response
D
Wide PWM Frequency:
Fixed 350 kHz, 550 kHz or
Adjustable 280 kHz to 700 kHz
D
Load Protected by Peak Current Limit and
Thermal Shutdown
D
Integrated Solution Reduces Board Area and
Total Cost
APPLICATIONS
D
Low-Voltage, High-Density Systems With
Power Distributed at 5 V
D
Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs and
Microprocessors
D
Broadband, Networking, and Optical
Communications Infrastructure
D
Portable Computing/Notebook PCs
SIMPLIFIED SCHEMATIC
Input
VIN
VBIAS
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.
PowerPAD and SWIFT are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
PH
TPS54810
BOOT
PGND
VSENSE
COMP
VSENSE
Compensation Network
6,4 mm X 9,7 mm
SLVS420B − MARCH 2002 − R EVISED FEBRUARY 2005
DESCRIPTION
As a member of the SWIFT™ family of dc/dc regulators,
the TPS54810 low-input voltage high-output current
synchronous buck PWM converter integrates all
required active components. Included on the substrate
with the listed features are a true, high performance,
voltage error amplifier
performance under transient conditions and flexibility in
choosing the output filter L and C components; an
under-voltage-lockout circuit to prevent start-up until
the input voltage reaches 3.8 V; an internally or
externally set slow-start circuit to limit in-rush currents;
and a power good output useful for processor/logic
reset, fault signaling, and supply sequencing.
The TPS54810 is available in a thermally enhanced
28-pin TSSOP (PWP) PowerPAD™ package, which
eliminates bulky heatsinks. TI provides evaluation
modules and the SWIFT™ designer software tool to aid
in quickly achieving high-performance power supply
designs to meet aggressive equipment development
cycles.
100
Output
95
90
85
80
75
70
65
60
55
50
0 1
Copyright © 2002, Texas Instruments Incorporated
TPS54810
that enables maximum
EFFICIENCY AT 700 HZ
V = 5 V
I
V = 3.3 V
O
2 3 4 5 6 7 8 9 10
I − Load Current − A
L