1 Features

• Configured for a wide range of applications

– 3-V to 16-V input voltage range

– 0.6-V to 7-V output voltage range

– 0.6-V reference voltage

– ±1 reference accuracy at 25°C

– ±1.5 reference accuracy at –40°C to 125°C

– Integrated 55.2-mΩ and 24.3-mΩ MOSFETs

– 100-μA low quiescent current

– 1.4-MHz switching frequency

– Maximum 93 large duty cycle operation

– Precision EN threshold voltage

– 1.6-ms fixed typical soft-start time

• Ease of use and small solution size

– TPS563252 Eco-mode, TPS563257 FCCM

mode at light loading

– D-CAP3™ control topology

– Easy layout with integrated bootstrap capacitor

– Support start-up with prebiased output

– Open-drain power-good indicator

– Non-latch for OV, OT, and UVLO protection

– Hiccup mode for UV protection

– Cycle-by-cycle OC and NOC protection

– 1.6-mm × 1.6-mm SOT-563 package

• Create a custom design using the TPS563252 with

the WEBENCH® Power Designer

• Create a custom design using the TPS563257 with

the WEBENCH® Power Designer

2 Applications

• WLAN/Wi-Fi access point, switch, router

• Pro-audio, surveillance, drone

• DTV, STB and DVR, smart speaker

3 Description

The TPS56325x is a simple, easy-to-use, high

efficiency, high power density, synchronous buck

converter with input voltage ranging from 3-V to 16-V

and supports up to 3-A continuous current at output

voltages between 0.6 V and 7 V.

The TPS56325x employs DCAP3 topology to provide

a fast transient response and to support low-ESR

output capacitors with no requirement for external

compensation. The device can support up to 93

duty cycle operation. Integrated bootstrap capacitor

helps achieve single layer PCB and can save total

BOM cost.

The TPS563252 operates in Eco-mode, which

maintains high efficiency during light loading. The

TPS563257 operates in FCCM mode, which keeps

the same frequency and lower output ripple during

all load conditions. The device integrates complete

protection through OVP, OCP, UVLO, OTP, and UVP

with hiccup.

The device is available in 1.6-mm × 1.6-mm SOT-563

package. The junction temperature is specified from

–40°C to 125°C.