TPS56320x 4.2-V to 17-V Input, 3-A Synchronous Buck Converter in SOT563

1 Features

• Configured for a wide range of applications

– Input voltage range: 4.2 V to 17 V

– Output voltage range: 0.6 V to 7 V

– Reference voltage: 0.6 V

– ±1.5% reference voltage accuracy at 25 °C

– ±2% reference voltage accuracy at –40°C to

125°C

– Integrated 110-mΩ and 60-mΩ FETs

– Low quiescent current for TPS563203: 110 μA

– Switching frequency: 600 kHz

– Maximum 95% large duty cycle operation

– Fixed soft-start time: 1.4 ms

• Easy of use and small solution size

– ECO mode (TPS563203) and FCCM mode

(TPS563206) at light loading

– D-CAP3™ control mode with fast transient

response

– Support start-up with prebiased output

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

– Cycle-by-cycle over current limit

– Hiccup mode for UV protection

– Operating junction temperature range from –

40°C to 125°C

– SOT563 package 1.6 mm × 1.6 mm

2 Applications

• TV

• Digital set top box (STB)

• Building automation

• Broadband fixed line access

3 Description

TPS563203, TPS563206 is a simple, easy-to-use, 3-A

synchronous buck converter in a SOT563 package.

The device is optimized to operate with minimum

external component counts and also optimized to

achieve low standby current.

This switch mode power supply (SMPS) device

employs

D-CAP3

control

mode

providing

a

fast transient response and supporting both low-

equivalent series resistance (ESR) output capacitors

such as specialty polymer and ultra-low ESR

ceramic capacitors with no external compensation

components.

TPS563203 operates in ECO mode, which maintains

high efficiency during light load operation. TPS563206

operates in FCCM mode, which keeps the same

frequency and lower output ripple during all load

conditions. It integrates complete protection through

OCP, UVLO, OTP, and UVP with hiccup. TPS56320x

is available in a 6-pin 1.6-mm × 1.6-mm SOT563

(DRL) package, and specified from a –40°C to 125°C

junction temperature.

Package Information

PART NUMBER

PACKAGE

(1)

BODY SIZE (NOM)

TPS563203,

TPS563206

DRL (SOT563, 6)

1.60 mm × 1.60 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

TPS563203

GND

SW

VIN

1

2

3

4

5

6

V

OUT

V

OUT

EN

V

IN

C

OUT

C

IN

FB

EN

BST

Simplified Schematic

Output Current (A)

0.001

0.01

0.1

1

3

0

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

TPS563203 Vout=1.05V

TPS563203 Vout=5V

TPS563206 Vout=1.05V

TPS563206 Vout=5V

TPS563203 and TPS563206 Efficiency

TPS563203, TPS563206

SLUSEZ4 – MARCH 2023

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. ADVANCE INFORMATION for preproduction products; subject to change

without notice.