TPS63020DSJR.pdf

Features for the TPS63020

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

Description for the TPS63020

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).