ADP5090 Ultralow Power Boost Regulator with MPPT and Charge Management

The ADP5090 is an integrated boost regulator that converts dc power from PV cells or TEGs. The device charges storage elements such as rechargeable Li-Ion batteries, thin film batteries, super capacitors, and conventional capacitors, and powers up small electronic devices and battery-free systems.

The ADP5090 provides efficient conversion of the harvested limited power from a 16 µW to 200 mW range with sub-µW operation losses. With the internal cold-start circuit, the regulator can start operating at an input voltage as low as 380 mV. After cold startup, the regulator is functional at an input voltage range of 80 mV to 3.3 V.

By sensing the input voltage at the VIN pin, the control loop keeps the input voltage ripple in a fixed range to maintain stable dc-to-dc boost conversion. The VIN OCV sensing and programmable regulation points of the input voltage allow extraction of the highest possible energy from the PV cell or TEG harvester. A programmable minimum operation threshold (MINOP) enables boost shutdown during a low light condition. In addition, the DIS_SW pin can temporarily shut down the boost regulator and is RF transmission friendly.

The charging control function of ADP5090 protects rechargeable energy storage, which is achieved by monitoring the battery voltage with programmable charging termination voltage and shutdown discharging voltage. In addition, a programmable PGOOD flag monitors the SYS voltage.

An optional primary cell battery can be connected and managed by an integrated power path management control block that automatically switches the power source from the energy harvester, rechargeable battery, and primary cell battery.

The ADP5090 is available in a 16-lead, 3 mm × 3 mm LFCSP package and is rated for a −40°C to +125°C junction temperature range.

Applications

PV cell energy harvesting
TEG energy harvesting
Battery regulator powered by solar panel
Industrial monitoring
Self-powered wireless sensor devices
Portable and wearable devices with energy harvesting

Features and Benefits

Hysteretic controller for best ultralight load efficiency
320 nA ultralow quiescent current (CBP ≥ MINOP)
260 nA ultralow quiescent current (CBP < MINOP)
Input voltage operation range from 80 mV to 3.3 V
Cold start from 380 mV (typical) with charge pump
Open circuit voltage (OCV) sensing for MPPT
Programmable MPPT ratio for photovoltaic (PV) or thermoelectric generator (TEG) energy sources
Programmable shutdown point on MINOP pin

Programmable voltage monitor (2.2 V to 5.2 V) to support charging and prevent overcharging or overdischarging
Power path management for an optional backup primary cell battery connected to the BACK_UP pin
Temporary shutdown boost regulator via microcontroller (MCU) communication

Power Management

Switching Regulators

Reference Designs

CN0372 Design & Integration Files .ZIP

Data Sheets

Document	note
ADP5090: Ultralow Power Boost Regulator with MPPT and Charge Management Data Sheet (Rev. C)	PDF 620 kB

User Guides

Document	note
UG-708: Evaluation Board for the ADP5090 Ultralow Power Boost Regulator	PDF 305.38 K
UG-782: Evaluation Board for the ADP5090 Demonstration Platform for Energy Harvesting	PDF 378.85 K

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADP5090ACPZ-1-R7 Production	16 ld LFCSP (3x3mm, 1.7mm exposed pad)	REEL 1500	-40 to 125C	0	1.99	Y
ADP5090ACPZ-2-R7 Production	16 ld LFCSP (3x3mm, 1.7mm exposed pad)	REEL 1500	-40 to 125C	0	1.99	Y

Evaluation Boards

Part Number	Description	Price	RoHS
ADP5090-1-EVALZ	Evaluation Board	49	Y
ADP5090-2-EVALZ	Evaluation Board	49	Y
EV-ADRN-WSN-1Z	Evaluation Board (Bunch Board)	349	Y
EV-ADRN-WSN-2Z	Evaluation Board (Cluster Board)	349	Y