1 Features

1• Industry's Highest Efficiency at Low Output

Currents: > 90% With I OUT = 15 μA

• Ultra-Low Power Buck Converter

– TPS62736 Optimized for 50-mA Output

Current

– TPS62737 Optimized for 200-mA Output

Current

– 1.3-V to 5-V Resistor Programmable Output

Voltage Range

– 2-V to 5.5-V Input Operating Range

– 380-nA and 375-nA Quiescent Current During

Active Operation for TPS62736 and TPS62737

– 10-nA Quiescent Current During Ship Mode

Operation

– 2% Voltage Regulation Accuracy

• 100% Duty Cycle (Pass Mode)

• EN1 and EN2 Control

– Two Power-Off States:

1. Shipmode (Full Power-Off State)

2. Standby Mode Includes VIN_OK Indication

• Input Power-Good Indication (VIN_OK)

– Push-Pull Driver

– Resistor Programmable Threshold Level

2 Applications

• Ultra-Low Power Applications

• 2-Cell and 3-Cell Alkaline-Powered Applications

• Energy Harvesting

• Solar Chargers

• Thermal Electric Generator (TEG) Harvesting

• Wireless Sensor Networks (WSN)

• Low-Power Wireless Monitoring

• Environmental Monitoring

• Bridge and Structural Health Monitoring (SHM)

• Smart Building Controls

• Portable and Wearable Health Devices

• Entertainment System Remote Controls

3 Description

The TPS6273x family provides a highly integrated

ultra low power buck converter solution that is well

suited for meeting the special needs of ultra-low

power applications such as energy harvesting. The

TPS6273x provides the system with an externally

programmable regulated supply to preserve the

overall efficiency of the power-management stage

compared to a linear step-down converter. This regulator is intended to step-down the voltage from

an energy storage element such as a battery or super

capacitor to supply the rail to low-voltage electronics.

The regulated output has been optimized to provide

high efficiency across low-output currents (<10 μA) to

high currents (200 mA).

The TPS6273x integrates an optimized hysteretic

controller for low-power applications. The internal circuitry uses a time-based sampling system to

reduce the average quiescent current.