TPS53315RGFT Datasheet, PDF (1/30 Pages) Texas Instruments – 12-A Step-Down Regulator with Integrated Switcher

TPS53315
www.ti.com
SLUSAE6 – DECEMBER 2010
12-A Step-Down Regulator with Integrated Switcher
Check for Samples: TPS53315
FEATURES
1
•2 Conversion Input Voltage Range: 3 V to 15 V
• VDD Input Voltage Range: 4.5 V to 25 V
• Output Voltage Range: 0.6 V to 5.5 V
• 5-V LDO Output
• Integrated Power MOSFETs with 12-A
Continuous Output Current
• <10-mA Shut Down Current
• Auto-Skip Eco-mode™ for Light-Load
Efficiency
• D-CAP™ Mode with Fast Transient Response
• Selectable Switching Frequency from 250 kHz
to 1 MHz with an External Resistor
• Built-in 1%, 0.6-V Reference
• 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable
Internal Voltage Servo Soft-Start
• Pre-Charged Start-up Capability
• Integrated Boost Switch
• Adjustable Overcurrent Limit Via External
Resistor
• Overvoltage/Undervoltage, UVLO and
Over-Temperature Protection
• Support All Ceramic Output Capacitors
• Open Drain Power Good Indication
• 40-pin QFN Package with PowerPAD™
APPLICATIONS
• Server and Desktop Computers
• Notebook Computers
• Telecommunication Equipments
DESCRIPTION
TPS53315 is a D-CAP™ mode, 12-A synchronous
switcher with integrated MOSFETs. It is designed for
ease of use, low external component count, and
small package power systems.
This device features single-rail input support, one
19-mΩ and one 7-mΩ integrated MOSFET, accurate
1%, 0.6 V Reference, and integrated boost switch. A
sample of competitive features include: greater than
96% maximum efficiency, 3 V to 15 V wide input
voltage range, very low external component count,
D-CAP™ mode control for super fast transient,
selectable auto-skip and PWM operation, internal
soft-start control, adjustable frequency, and no need
for compensation.
The conversion input voltage ranges from 3 V to
15 V, the supply voltage range is from 4.5 V to 25 V,
and the output voltage range is from 0.6 V to 5.5 V.
The TPS53315 is available in a 5 mm × 7 mm 40-pin,
QFN package and is specified from –40°C to 85°C.
32 31 30 29 28 27 26 25 24 23 22 21
33 N/C
VREG PGOOD _{34 N/C}
35 TRIP
EN
36 EN
37 VFB
38 RF
39 MODE
40 VDD
TPS53315
LL 20
LL 19
LL 18
LL 17
LL 16
VIN 15
VIN 14
VIN 13
1 2 3 4 5 6 7 8 9 10 11 12
VDD
4.5 V to 25 V
V
OUT
V_IN
3 V to 15 V
UDG-10199
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.
Eco-mode, D-CAP, PowerPAD are trademarks of Texas Instruments.
2
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 © 2010, Texas Instruments Incorporated