Highly-efficient, regulated dual-output, ambient energy manager for up to 7-cell solar panels with optional primary battery
Product Features:
Ultra-low-power start-up:
– Cold start from 380 mV input voltage and 3 µW input power (typical)
Ultra-low-power boost regulator:
– Open-circuit voltage sensing for MPPT every 5s
– Configurable MPPT with 2-pin programming
– Selectable Voc ratios of 70, 75, 85 or 90 %
– Input voltage operation range from 50 mV to 5V
– MPPT voltage operation range from 50 mV to 5V
Integrated 1.2/1.8 V LDO regulator:
– Up to 20 mA load current
– Power gated dynamically by external control
– Selectable output voltage
Integrated 1.8 V-4.1 V LDO regulator:
– Up to 80 mA load current with 300 mV drop-out
– Power gated dynamically by external control
– Selectable or adjustable output voltage
Flexible energy storage management:
– Selectable overcharge and overdischarge protection for any type of rechargeable battery or (super)capacitor
– Fast supercapacitor charging
– Warns the load when battery is running low
– Warns when output voltage regulators are available
Smallest footprint, smallest BOM:
– Only seven passive external components
Optional primary battery:
– Automatically switches to the primary battery when the secondary battery is exhausted
Integrated balun for dual-cell supercapacitor
Applications:
> PV cell harvesting
> Home automation
> Industrial monitoring
> E-health monitoring
> Geolocation
> Wireless sensor nodes
Product Matrix:
Vin: 50mV to 5V
Cold-Start: 380mV 3µW
Pin: 3µW to 550mW
Pout: 20mA@1.8V 80mA@/1.2/1.8-4.1V
MPPT: Yes
Package: QFN28 5x5mm
