TPS53315_15 Datasheet, PDF (1/35 Pages) Texas Instruments – Step-Down Regulator

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TPS53315
SLUSAE6A – DECEMBER 2010 – REVISED DECEMBER 2015
TPS53315 12-A Step-Down Regulator with Integrated Switcher
1 Features
•1 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-μA 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 VQFN Package with Thermal Pad
2 Applications
• Server and Desktop Computers
• Notebook Computers
• Telecommunication Equipments
3 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,
VQFN package and is specified from –40°C to 85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS53315
VQFN (40)
7.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application
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
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.