1 Features
• Input voltage range: 1.3 V to 5.5 V
– Device input voltage > 1.8 V for start-up
• Output voltage range: 1.8 V to 5.2 V (adjustable)
• 2-A output current for VI ≥ 2.3 V, VO = 3.3 V
• High efficiency over the entire load range
– 11-μA operating quiescent current
– Power save mode and mode selection for
forced PWM-mode
• Peak current buck-boost mode architecture
– Defined transition points between buck, buckboost,
and boost operation modes
– Forward and reverse current operation
– Start-up into pre-biased outputs
• Safety and robust operation features
– Integrated soft start
– Overtemperature- and overvoltage-protection
– True shutdown function with load disconnect
– Forward and backward current limit
• Small solution size of 21.5 mm2
– Tiny SON/DFN package (similar to QFN)
– Small 0.47-μH inductor
– Works with a 22-μF minimum output capacitor
• Create a custom design using the TPS63802 with
the WEBENCH® Power Designer

2 Applications
• System pre-regulator (tracking and telematics,
portable POS, home automation, IP network
camera)
• Point-of-load regulation (wired sensor, port/cable
adapter and dongle, electronic smart lock, IoT)
• Battery back-up supply (electricity meter, data
concentrator, power quality meter)
• Thermoelectric device supply (TEC, optical
modules)
• General purpose voltage stabilizer and converter

3 Description
The TPS63802 is a high efficiency, high output current
buck-boost converter. Depending on the input voltage,
it automatically operates in boost, buck, or in a novel
4-cycle buck-boost mode when the input voltage is
approximately equal to the output voltage. The
transitions between modes happen at defined
thresholds and avoid unwanted toggling within the
modes to reduce output voltage ripple. The device
output voltages are individually set by a resistive
divider within a wide output voltage range. An 11-μA
quiescent current enables the highest efficiency for
little to no-load conditions.