TPS62740DSST Description
The TPS62746 is a high-efficiency step-down converter with an ultra-low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2- μH inductor and 10μF output capacitor. The device uses DCS-Control? and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-μA and below. TPS62746 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows for operating the device directly from a single Li-MnO2 coin cell.
TPS62740DSST Features
Input voltage range VIN from 2.15 V to 5.5 V
Input voltage range down to 2.0 V once started
300-mA output current
360-nA operational quiescent current
Up to 90% efficiency at 10-μA output current
Power save mode operation
Selectable output voltages – 1.2 V and 1.8 V
Output voltage discharge
1-mA /150-Ω integrated input voltage switch
Low output voltage ripple
Automatic transition to no ripple 100% mode
RF friendly DCS-Control?
Total solution size < 10 mm2
Small 1.6-mm × 0.9-mm, 8-ball WCSP package
TPS62740DSST Applications
Wearables
Fitness tracker
Smartwatch
Health monitoring
Bluetooth? low energy, RF4CE, Zigbee
High-efficiency, ultra-low power applications
Energy harvesting
