1 Features
1• Wide Input Voltage Range 3 V to 17 V
• Input Supply Voltage Supervisor (SVS) With
Adjustable Threshold and Hysteresis Consuming
Typical 6-μA Quiescent Current
• Wide Output Voltage Range 1.2 V to 10 V
• Typical 13-μA Quiescent Current
• 350-nA Typical Shutdown Current
• Seamless Power Save Mode Transition
• DCS-Control™ Scheme
• Low Output Ripple Voltage
• Up to 1-MHz Switching Frequency
• Highest Efficiency over Wide VIN and VOUT Range
• Pin to Pin Compatible with TPS62160/70
• 100% Duty Cycle Mode
• Power Good Open Drain Output
• Output Discharge Function
• Small 2-mm × 2-mm 8-pin WSON Package

2 Applications
• Embedded Processing
• 4-Cell Alkaline, 1- to 4-Cell Li-Ion Battery-Powered
Applications
• 9-V to 15-V Standby Power Supply
• Energy Harvesting
• Inverter (Negative VOUT)

3 Description
The TPS62125 device is a high-efficiency
synchronous step-down converter optimized for low
and ultralow power applications providing up to 300-
mA output current. The wide input voltage range of 3
V to 17 V supports 4-cell alkaline and 1- to 4-cell Li-
Ion batteries in series configuration as well as 9-V to
15-V powered applications. The device includes a
precise low-power enable comparator which can be
used as an input supply voltage supervisor (SVS) to
address system specific power-up and power-down
requirements. The enable comparator consumes only
6-μA quiescent current and features an accurate
threshold of 1.2 V typical as well as an adjustable
hysteresis. With this feature, the converter can
generate a power supply rail by extracting energy
from a storage capacitor fed from high impedance
sources such as solar panels or current loops. With
its DCS-Control scheme the converter provides
power-save mode operation to maintain highest
efficiency over the entire load current range. At light
loads the converter operates in pulse frequency
modulation (PFM) mode and transitions seamlessly
and automatically in pulse width modulation (PWM)
mode at higher load currents. The DCS-Control™
scheme is optimized for low-output ripple voltage in
PFM mode in order to reduce output noise to a
minimum and features excellent AC load regulation.
An open-drain power good output indicates once the
output voltage is in regulation.