1 Features

1• Input Voltage Range: 2.3 V to 5.5 V

• Output Voltage Range: 2.5 V to 5.5 V

• Up to 96% Efficiency Synchronous Boost

Converter

• 3.3-V to 5-V Power Conversion with 2.1-A Output

Current

• Input Supply Voltage Supervisor with Adjustable

Threshold/Hysteresis

• Power Save Mode for Light Load Efficiency

• Load Disconnect During Shutdown

• Output Over Voltage Protection

• Programmable Soft Start

• Power Good Output

• 2-MHz Switching Frequency

• Output Capacitor Discharge (TPS61231)

• 3 mm x 3 mm x 0.9 mm VSON Package

2 Applications

• Low Voltage Li-Ion Battery Powered Products

• USB Power Supply

• Tablet PCs

• Power Banks, Battery Backup Units

• Industrial Metering Equipments

3 Description

The TPS6123x device family is a high efficiency

synchronous step up converter with compact solution size. It is optimized for products powered by a one-

cell Li-Ion battery, or a regulated power rail of 3.3 V.

The IC integrates a 5-A switch and is capable of

delivering output currents up to 2.1 A at a 5-V output

with a 3.3-V input supply. The device is based on a

quasi-constant on-time valley current mode control

scheme. The typical operating frequency is 2 MHz,

which allows the use of small inductors and

capacitors to achieve a small solution size. The

TPS61230 and TPS61231 provide an adjustable

output voltage via an external resistor divider, and the TPS61232 provides a fixed output voltage of 5 V.

During light loads, the TPS6123x automatically enters

power save mode for maximum efficiency at lowest

quiescent currents. In shutdown, the load is

completely disconnected from the input, and the input

current consumption is reduced to 1.5 μA typical. The device integrates a precise low power EN

comparator. The EN threshold as well as the

hysteresis of the enable comparator are adjustable

with external resistors and support application

specific system power up and down requirements. Other features like output over voltage protection,

thermal shutdown protection, and a power good

output are built-in.

The devices are available in a 3 mm x 3 mm x 0.9

mm VSON package.