Ultra Low Iq Buck Converter

Ultra Low Iq Buck Converter

The BD70522GUL is a Buck Converter featuring 180nA quiescent current and supports output current up to 500mA. The Constant ON-Time (COT) control with ULP (Ultra Low Power) mode provides superior transient response and extends battery life by providing excellent light load efficiency below 10µA load range. The output voltage can be selected from 9 pre-set voltages by VSEL pins. When the input voltage gets close to the output voltage, the IC enters 100%ON mode where the switching operation stops.

  • Nano Energy TM
  • 180nA (Typ) Quiescent Current
  • Up to 90% Efficiency at 10µA Output Current
  • Up to 500mA Output Current
  • 9 Selectable Output Voltages (1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.2V, 3.3V)
  • Power Good Output
  • 100%ON Mode for Low Input Voltage
  • Discharge Function on VOUT

  • Smoke Detector
  • Thermostat
  • Portable Devices
  • Wearable Devices
  • Low-Iq Applications without Standby Switcher
  • Energy Harvesting

  • Input Voltage Range: 2.5V to 5.5V
  • Output Voltage Range: 1.2V to 3.3V
  • Maximum Output Current: 500mA
  • Operating Quiescent Current: 180nA (Typ)
  • Standby Current: 50nA (Typ)
  • Operating Temperature Range: -40°C to +85°C

*ROHM Authorized Distributor
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