SPV1050 Datasheet, PDF (1/36 Pages) STMicroelectronics – High efficiency for any harvesting source

SPV1050
Ultralow power energy harvester and battery charger
VFQFPN 3 x 3 x 1 mm 20L
Die form
Features
 Transformerless thermoelectric generators
and PV modules energy harvester
 High efficiency for any harvesting source
 Up to 70 mA maximum battery charging current
 Fully integrated buck-boost DC-DC converter
 Programmable MPPT by external resistors
 2.6 V to 5.3 V trimmable battery charge voltage
level (± 1% accuracy)
 2.2 V to 3.6 V trimmable battery discharge
voltage level (± 1% accuracy)
 Two fully independent LDOs (1.8 V and 3.3 V
output)
 Enable/disable LDO control pins
 Battery disconnect function for battery
protection
 Battery connected and ongoing charge logic
open drain indication pins
Applications
 Charge any battery type, including lithium
based, solid state thin film and super-capacitor.
 WSN, HVAC, building and home automation,
industrial control, remote metering, lighting,
security, surveillance.
 Wearable and biomedical sensors, fitness.
Datasheet - production data
Description
The SPV1050 is an ultralow power and high-
efficiency energy harvester and battery charger,
which implements the MPPT function and
integrates the switching elements of a buck-boost
converter.
The SPV1050 device allows the charge of any
battery, including the thin film batteries, by tightly
monitoring the end-of-charge and the minimum
battery voltage in order to avoid the
overdischarge and to preserve the battery life.
The power manager is suitable for both PV cells
and TEG harvesting sources, as it covers the
input voltage range from 75 mV up to 18 V and
guarantees high efficiency in both buck-boost and
boost configuration.
Furthermore the SPV1050 device shows very
high flexibility thanks also to the trimming
capability of the end-of-charge and undervoltage
protection voltages. In such way any source and
battery is matched.
The MPPT is programmable by a resistor input
divider and allows maximizing the source power
under any temperature and irradiance condition.
An unregulated voltage output is available (e.g. to
supply a microcontroller), while two fully
independent LDOs are embedded for powering
sensors and RF transceivers. Both LDOs (1.8 V
and 3.3 V) can be independently enabled through
two dedicated pins.
August 2015
This is information on a product in full production.
DocID025569 Rev 4
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