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.