Dual output boost regulator uses only 150nA
1 min read
Said to consume just 150nA of supply current, the TS3310 dual output boost regulator from Touchstone Semiconductor is designed to extend battery life by minimising the impact on a device's sleep current budget.
The regulator operates from supply voltages as low as 0.9V up to 3.6V and can deliver at least 50mA of continuous output current.
It's always on output is suitable for powering a microcontroller, while its instant on output is suitable for powering a short burst load, such as a Zigbee or Bluetooth radio.
Touchstone says the device can be powered from a range of sources, including tiny button cells, single or multiple cell alkaline cells or single Li-chemistry batteries.
The module can also charge up a buffer capacitor to provide large burst currents to high power radios or other peripherals, even from tiny coin cell batteries.
A fail safe battery protection feature means that if the battery voltage drops because of cold temperatures, or at the end of life, the battery's internal impedance goes up. An under voltage lockout then scheme pauses the switching activity, so the battery cannot get dragged down below 900mV.
