1 Features

• 1.6-V to 5.5-V input voltage range

– Device input voltage > 1.65 V for start-up

• 1.2-V to 5.5-V output voltage range(adjustable)

• High output current capability, 3-A peak switch

current

– 2-A output current for VIN ≥ 3 V, VOUT = 3.3 V

– 1.5-A output current for VIN ≥ 2.7 V, VOUT = 3.3

V

• Active output discharge (TPS631011 only)

• High efficiency over the entire load range

– 8-μA typical quiescent current

– Automatic power save mode and forced PWM

mode configurable

• Peak current buck-boost mode architecture

– Seamless mode transition

– Forward and reverse current operation

– Start-up into pre-biased outputs

– Fixed-frequency operation with 2-MHz

switching

• Safety and robust operation features

– Overcurrent protection and short-circuit

protection

– Integrated soft start with active ramp adoption

– Overtemperature protection and overvoltage

protection

– True shutdown function with load disconnect

– Forward and backward current limit

• Small solution size

– Small 1-μH inductor

– 1.803-mm × 0.905-mm in WCSP

• Create a custom design using the TPS631010 and

TPS631011 with the WEBENCH® Power Designer

2 Applications

• TWS

• System pre-regulator (smartphone, tablet,

terminal, telematics)

• Point-of-load regulation (wired sensor, port/cable

adapter, and dongle)

• Fingerprint, camera sensors (electronic smart lock,

IP network camera)

• Voltage stabilizer (datacom, optical modules,

cooling/heating)

3 Description

The TPS631010 and TPS631011 are constant

frequency peak current mode control buck-boost

converters in tiny wafer chip scale package. They

have a 3-A peak current limit (typical) and 1.6-V

to 5.5-V input voltage range, and provide a power

supply solution for system pre-regulators and voltage

stabilizers.

Depending on the input voltage, the TPS631010 and

TPS631011 automatically operate in boost, buck, or

in 3-cycle buck-boost mode when the input voltage

is approximately equal to the output voltage. The

transitions between modes happen at a defined

duty cycle and avoid unwanted toggling within the

modes to reduce output voltage ripple. 8-μA quiescent

current and power save mode power enable the

highest efficiency for light to no-load conditions.

The devices offer a very small solution size in WCSP.