Data Sheet
50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator
ADP5301
13169-001
FEATURES
Input start-u...
Data Sheet
50 mA/500 mA, High Efficiency, Ultralow Power Step-Down
Regulator
ADP5301
13169-001
FEATURES
Input start-up voltage range: 2.15 V to 6.50 V Operates down to 2.00 V voltage Ultralow 180 nA quiescent current with no load Selectable output voltage of 1.2 V to 3.6 V or 0.8 V to 5.0 V ±1.5% output accuracy over full temperature range in
PWM mode Selectable hysteresis mode or PWM operation mode Output current
Up to 50 mA in hysteresis mode Up to 500 mA in PWM mode VOUTOK flag monitors the output voltage 100% duty cycle operation mode 2 MHz switching frequency with optional synchronization input from 1.5 MHz to 2.5 MHz QOD option UVLO, OCP, and TSD protection 9-ball, 1.65 mm × 1.87 mm WLCSP −40°C to +125°C junction temperature
APPLICATIONS
Energy (gas and water) metering Portable and battery-powered equipment Medical applications Keep-alive power supplies
GENERAL DESCRIPTION
The ADP5301 is a high efficiency, ultralow quiescent current step-down
regulator that draws only a 180 nA quiescent current to regulate the output at no load.
The ADP5301 runs from an input startup voltage range of 2.15 V to 6.50 V, allowing the use of multiple alkaline/NiMH, Li-Ion cells, or other power sources. The output voltage is selectable from 0.8 V to 5.0 V by an external VID resistor and factory fuse. The total solution requires only four tiny external components.
The ADP5301 can operate between hysteresis mode and PWM mode via the SYNC/MODE pin. The
regulator in hysteresis mode achieves e...