BD70522GUL Buck Converter

By ROHM Semiconductor 76

BD70522GUL Buck Converter

ROHM Semiconductor's SBD70522GUL is a buck converter featuring 180 nA quiescent current and supports output current up to 500 mA. The constant ON-time (COT) control with ultra-low power (ULP) mode provides superior transient response and extends battery life by providing excellent light load efficiency below 10 μA load range. The output voltage can be selected from nine 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.

Features Key Specifications
  • Nano Energy™
  • Up to 90% efficiency at 10 μA output current
  • Nine selectable output voltages (1.2 V, 1.5 V, 1.8 V, 2 V, 2.5 V, 2.8 V, 3 V, 3.2 V, 3.3 V)
  • Power good output
  • 100% ON mode for low input voltage
  • Discharge function on VOUT
  • Package: VCSP50L1C 176 mm x 1.56 mm x 0.57 mm
  • Input voltage range: 2.5 V to 5.5 V
  • Output voltage range: 1.2 V to 3.3 V
  • Maximum output current: 500 mA
  • Operating quiescent current: 180 nA (typ.)
  • Standby current: 50 nA (typ.)
  • Operating temperature range: -40°C to +85°C
Applications
  • Smoke detectors
  • Thermostats
  • Portable devices
  • Wearable devices
  • Low IQ applications without standby switcher
  • Energy harvesting

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