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.