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TS52001 Datasheet(PDF) 1 Page - Semtech Corporation |
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TS52001 Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 22 page  TS52001 High Efficiency Li-Ion Battery Charger for Photovoltaic Sources TS52001 www.semtech.com Page 1 of 22 Final Datasheet Rev. 1.3 August 29, 2016 Semtech Features Temperature-independent PV MPPT-Lite™ regulation scheme VBAT reverse current blocking Programmable temperature-compensated termination voltage with +/- 1% tolerance Up to 1.4A of continuous output current in Full Charge Constant-Current (CC) mode User programmable charging current High efficiency – up to 92% at typical load Current mode PWM control in constant voltage Supervisor for VBAT reported at the nFLT pin Input supply under-voltage lockout Full protection for VBAT over-current, over-temp, over- voltage, and charging timeout Charge status indication I2C program interface with EEPROM registers Specification Wide input voltage range: 4.0V to 8.1V Packaged in a 16pin QFN (4x4) Product is lead-free, Halogen Free, RoHS / WEEE compliant Applications Portable solar chargers Off-grid systems Wireless sensor networks Smoke detectors Description The TS52001 is a DC/DC synchronous switching Li-ion Battery Charger with fully integrated power switches, internal compensation, and full fault protection. The TS52001 utilizes a temperature-independent photovoltaic Maximum Power Point Tracking (MPPT-Lite™) calculator to optimize power output from the source during Full Charge Constant-Current (CC) mode. The switching frequency of 1MHz enables the use of small filter components, resulting in smaller board space and reduced BOM costs. In Full Charge Constant-Current mode the duty cycle is controlled by the MPPT-Lite™ regulator. Once termination voltage is reached, the regulator operates in voltage mode. When the regulator is disabled (EN is low), the device draws 10uA quiescent current. The TS52001 includes supervisory reporting through the nFLT (Inverted Fault) open drain output to interface other components in the system. Device programming is achieved by an I²C interface through SCL and SDA pins. Typical Application Circuit GND EN VTHERM SW nFLT VBAT SCL PGND COUT LOUT RSENSE RREF VIN SDA VTH_REF Photovoltaic Cells VSENSE Battery RTHM RPULLUP (optional) VDD RPULLUP (optional) VDD CIN VDD CVdd TS52001 Figure 1: Photovoltaic Charging Application Circuit |
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