Texas Instruments TPS62840
Extend battery life with the 60nA quiescent current TPS62840
If you’re looking to reduce quiescent current and extend the lifetime of your system’s battery, then the TPS62840 is the device to review. 60nA of operating IQ, TPS62840 is extremely low quiescent current DC/DC switching regulator.
Description
The TPS62840 is a high efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 150 nA IQ in 100% mode to further extend battery life near the end of discharge.
The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode the device extends the light load efficiency down to a load current range of 1-µA and below.
16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum number of external components.
The device’s STOP pin immediately eliminates any switching noise in order to take a noise-free measurement in test & measurement systems.
The TPS6284x provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2 or 1S Li-Ion/Li-SoCl2.
Features
60-nA operating quiescent current
100% duty-cycle mode with 150-nA IQ
Input voltage range VIN from 1.8 V to 6.5 V
Output current up to 750 mA
RF friendly DCS-Control™
80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT)
16 selectable output voltages via VSET pin
Auto transition PFM/PWM or forced-PWM mode
Selectable forced PWM and STOP modes
Output discharge function
20-nA shutdown current
SON-8, WCSP-6 and HVSSOP-8 packages
For more information CLICK http://www.ti.com/product/TPS62840.
