描述 Description

Ultra-low-power start-up:Cold start from -19 dBm to 10dBmUltra-low-power boost regulator:Open-circuit voltage sensing for MPPT every 0.33 sConfigurable MPPT with 2-pin programmingSelectable Voc ratios of 50, 65 or 80%Input voltage operation range from 50 mV to 5 VMPPT voltage operation range from 50 mV to 4.5 VConstant impedance Matching (ZMPPT)Integrated 1.2/1.8 V LDO regulator:Up to 20 mA load currentPower gated dynamically by external controlSelectable output voltageIntegrated 1.8 V-4.1 V LDO regulator:Up to 80 mA load current with 300 mV drop-outPower gated dynamically by external controlSelectable or adjustable output voltageFlexible energy storage management:Selectable overcharge and overdischarge protectionFor any type of rechargeable battery or (super)capacitorFast supercapacitor chargingWarns the load when the battery is running lowWarns when output voltage regulators are availableSmallest footprint, smallest BOM:Only seven passive external componentsOptional primary battery:Automatically switches to the primary the battery when the secondary battery is exhaustedIntegrated balun for dual-cell supercapacitor

特性 Features

Ultra-low-power start-up:
? Cold start from -19 dBm to 10dBm

Ultra-low-power boost regulator:
? Open-circuit voltage sensing for MPPT every 0.33 s
? Configurable MPPT with 2-pin programming
? Selectable Voc ratios of 50, 65 or 80%
? Input voltage operation range from 50 mV to 5 V
? MPPT voltage operation range from 50 mV to 4.5 V
? Constant impedance Matching (ZMPPT)

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 the 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 the battery when the secondary battery is exhausted

Integrated balun for dual-cell supercapacitor