TPS6274x 360nA IQ Step Down Converter For Low Power Applications

TPS62740

The TPS62740 is industry `s first step down converter featurning typ.360nA quiescent current and operating with a tiny 2,2µH inductor and 10µF output capacitor.

The device  operates from rechargeble  Li-ion batteries Li-primary  battery chemistries such as LI-SOC12,LI-MnO2 and two or three cell alkaline batteries.

This new DCS Control is based device extends the light load efficiency range below 10µA load currents.

360-nA-Iq-Step-Down-Converter-1423453125_400_155

TPS62740 supports output currents up to 300m and TRS62742 up to 400mA.

The input voltage range up to 5.5 V allows also operation from a USB port and thin-film solar modules.The output voltage is user selectable by four VSEL pins within a range from 1.8V to 3.3 V in 100mV steps.

TRS6274x features  low output capacitor, once  the battery voltage comes close to the output voltage,the device then stops switching and the output is rate controlled load swich provides typ.0.6O onresistance and can distribute  the selected output voltage to temporarily used sub-system.

Applications:

  • Bluetooth
  • energy harvesting and
  • industrial metering

Features:

  • Power good output
  • low output ripple voltage
  • Automatic transition
  • Discharge function
  • Total solution size <31mm2
  • Small 2 x 3 mm2 package
  • Up to 90% efficiency and 10µA Output Current
  • Input Voltage range from 2.2V to 5.5
  • Typ.360nA quiescent current

Source : eeweb

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