1 Features

1• Input voltage range: 1.8 V to 5.5 V

• Adjustable output voltage: 1.2 V to 5.5 V

• Output current for VIN > 2.5 V, VOUT = 3.3 V: 2 A

• High efficiency over the entire load range

– Operating quiescent current: 25 μA

– Power save mode with mode selection

• Average current mode buck-boost architecture

– Automatic transition between modes

– Fixed frequency operation at 2.4 MHz

– Synchronization possible

• Power good output

• Safety and robust operation features

– Overtemperature, overvoltage protection

– Load disconnect during shutdown

• Create a custom design using the

– TPS63020 with WEBENCH Power Designer

– TPS63021 with WEBENCH Power Designer

2 Applications

• Pre-regulation in battery-powered devices: EPOS

(portable data terminal, barcode scanner), ecigarette,

single board computer, IP network

camera, video doorbell, land mobile radios

• Voltage stabilizer: wired communication, wireless

communication, PLC, optical module

• Backup supercapacitor supply: electricity meter,

solid state drive (SSD) - enterprise

3 Description

The TPS6302x devices provide a power supply

solution for products powered by either a two-cell or

three-cell alkaline, NiCd or NiMH battery, a one-cell

Li-ion or Li-polymer battery, supercapacitors or other

supply rails. Output currents up to 3 A are supported.

When using batteries, they can be discharged down

to below 2 V. The buck-boost converter is based on a

fixed frequency, pulse width modulation (PWM)

controller using synchronous rectification to obtain

maximum efficiency. At low load currents, the

converter enters power save mode to maintain high

efficiency over a wide load current range. The power

save mode can be disabled, forcing the converter to

operate at a fixed switching frequency. The maximum

average current in the switches is limited to a typical

value of 4 A. The output voltage is programmable

using an external resistor divider, or is fixed internally

on the chip. The converter can be disabled to

minimize battery drain. During shutdown, the load is

disconnected from the battery.

The TPS6302x devices operate over a free air

temperature range of –40°C to 85°C. The devices are

packaged in a 14-pin VSON package measuring 3

mm × 4 mm (DSJ).