SPV1050 datasheet(15/36 Pages) STMICROELECTRONICS

Part #	SPV1050

Description	Ultralow power energy harvester and battery charger

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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15 / 36 page

DocID025569 Rev 4

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SPV1050

Functional description

Equation 3

10 M

 R4 + R5 + R6 20 M

Further, the SPV1050 device provides two open drain digital outputs to an external

microcontroller:



BATT_CONN

This pin is pulled down when the pass transistor is closed. It will be released once the

pass transistor will be opened (e.g. triggering of VUVP). If used, this pin must be pulled-

up to the STORE by a 10 M

 (typical) resistor.



BATT_CHG

This pin is pulled down when the DC-DC converter is switching, while it's released

when it is not switching, i.e. when the EOC threshold is triggered until the voltage on

the STORE pin drops at VEOC - EOCHYS , when the UVLO threshold is triggered or

during the TSAMPLE of the MPPT algorithm. If used, this pin must be pulled-up to the

STORE by a 10 M

 (typical) resistor.

SPV1050 Datasheet(PDF) 15 Page - STMicroelectronics