Datasheet TP5000 (Top Power ASIC)

南京拓微集成电路有限公司 NanJing Top Power ASIC Corp.
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Description TP5000 is a switching buck single manganese lithium battery / LiFePO4 battery charge management chip. Its QFN16 ultra-compact package with simple peripheral circuit, making the TP5000 is ideal for portable equipment large current charging management applications. Meanwhile, TP5000 built-in input overcurrent, undervoltage protection, over temperature protection, short circuit protection, battery temperature monitoring, reverse battery protection. TP5000 has a wide input voltage, divided into three stages Trickle pre-charge, constant current, constant voltage trickle charge the battery pre-charge current, constant current charging current adjusted through an external resistor, the maximum charging current of 2A. TP5000 switching frequency of 800kHz operating mode so that it can use smal er external components and smal er heat remains in the high current charging. TP5000 Built-power the PMOSFET, anti-intrusion circuit, so there is no need anti-intrusion perimeter protection Schottky diodes. TP5000 constant current function can also be used dry batteries in 2 strings of lithium batteries or 4 string input, constant current drive 0.5-7W white LED. Characteristic ■ Single 4.2V lithium manganese or 3.6V LiFePO4 battery charge ■ Built-in power MOSFET, switching mode, The devices less heat, simple peripheral ■ programmable charge current, 0.1A--2A ■ programmable pre-charge current, 10% - 100% ■ eliminates the need for an external Schottky diode anti-intrusion ■ Wide operating voltage up to 9V ■ Two LED charge status indicator ■ chip temperature protection, overcurrent protection, undervoltage protection ■ battery temperature protection, reverse battery shutdown, short-circuit protection ■ switching frequency 800KHz, available inductor 2.2uH-10uH ■ automatic recharge function ■ less than 1% of the charging voltage control precision ■ paragraph Trickle, constant current, constant voltage charging to protect the battery ■ QFN16 4mm * 4mm ultra-smal package