1 Features
• 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 shutdown current
• Auto-skip Eco-mode for light-load efficiency
• D-CAP integrated circuit 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 through external
resistor
• Overvoltage, undervoltage, UVLO, and
overtemperature 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 integrated circuit, 12-A
synchronous switcher with integrated MOSFETs. The
device 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 integrated circuit for super fast transient,
selectable auto-skip and PWM operation, internal softstart
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.