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.