TPS62746 - Texas Instruments

TPS62746 300/400mA High Efficiency Buck Converter

The TPS62746 is a high efficiency step down converter with 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 c.

Features

•1 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 <10mm2
• Small 1.6 mm × 0.9 mm, 8 Ball WCSP Package 2 Applications
• Wearables
• Fitness Tracker
• Smart Watch
• Health Mo.