DFR0579 DF Robot

SPV1050 Datasheet Ultralow power energy harvester and battery charger Features Transformerless thermoelectric generators and PV modules energy harvester High efficiency for any harvesting source Up to 70 mA output current Fully integrated MOSFETs for Boost or Buck-boost configurations Selectable enable/disable MPPT functionality Programmable MPPT by external resistors 2.6 V to 5.3 V trimmable output overvoltage level ( 1% accuracy) 2.2 V to 3.6 V trimmable output undervoltage level ( 1% accuracy) Two fully independent LDOs (1.8 V and 3.3 V output) Enable/disable LDO pins Load disconnect function (by-pass transistor open) prior the first start-up (Cold Start) to avoid battery lifetime shortening Battery Connected and DC-DC switching open drain indication pins Application Internet of things Remote control Fleet and livestock tracking Agriculture sensors Toll-pay Product status link Electronic labels SPV1050 Smart watch and wearable. Product label Description The SPV1050 is an ultra-low power and high-efficiency power manager embedding four MOSFETs for boost or buck-boost DC-DC converter and an additional transistor for the load connection/disconnection. An internal high accuracy MPPT algorithm can be used to maximize the power extracted from PV panel or TEG. The internal logic works to guarantee tight monitoring of both the end-of-charge voltage (V ) and the minimum battery voltage (V ) by opening the pass- EOC UVP transistor at triggering of the V threshold or at triggering of the V threshold EOC UVP to preserve the battery life. Both the V and V thresholds can be trimmed by EOC UVP external resistors connected between the STORE rail and the EOC and UVP pins, respectively. In boost configuration (CONF pin connected to the supply source), the IC requires 550 mV and 30 A to Cold start while after the first start-up the input voltage can range between 150 mV and V . In buck-boost configuration (CONF pin connected EOC to ground), the IC requires 2.6 V and 5 A at Cold start while after the first start-up input voltage can range between 150 mV up to 18 V. The STORE pin is available as unregulated voltage output (e.g. to supply by external LDO a micro-controller), while two fully independent LDOs (1.8 V and 3.3 V) are embedded for powering other companion ICs like MCU, sensors or RF transceivers. Both LDOs can be independently enabled through the related pins. DS10044 - Rev 6 - October 2021 www.st.com For further information contact your local STMicroelectronics sales office.SPV1050 Block Diagram 1 Block Diagram Figure 1. Block diagram DS10044 - Rev 6 page 2/31