2A charging IC TP5000 Nanjing Top Power Integrated Circuit Co., Ltd. TP5000 Nanjing Top Power Integrated Circuit Co., Ltd. NanJing Top Power ASIC Corp. Data Sheet DATASHEET TP5000 (2A switching 4.2V lithium battery/3.6V iron lithium battery charger) Nanjing Top Power Integrated Circuit Co., Ltd. TP5000 Overview TP5000 is a switching step-down single-cell manganese lithium battery/lithium iron phosphate battery charging management chip. Its QFN16 ultra-small package and simple peripheral circuit make TP5000 very suitable for high-current charging management applications in portable devices. At the same time, TP5000 has built-in input overcurrent, undervoltage protection, chip overtemperature protection, short circuit protection, battery temperature monitoring, and battery reverse connection protection. TP5000 has a wide input voltage, and the battery charging is divided into three stages: trickle pre-charge, constant current, and constant voltage. The trickle pre-charge current and constant current charging current are adjusted by external resistors, and the maximum charging current is 2A. TP5000 uses a switching mode with a frequency of 800kHz, which allows it to use smaller peripheral devices and maintain a small heat generation during high current charging. TP5000 has built-in power PMOSFET and anti-backflow circuit, so there is no need for peripheral protection such as anti-backflow Schottky diode. The constant current function of TP5000 can also be used for 2 strings of lithium batteries or 4 strings of dry batteries input, constant current drive 0.5-7W white light LED. Features■ ■Absolute maximum ratings■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Single-cell 4.2V manganese lithium or 3.6V lithium iron phosphate battery chargingBuilt-in power MOSFET, switch-type working mode, the device generates less heat, and the periphery is simpleProgrammable charging current, 0.1A--2AProgrammable pre-charge current, 10%--100%, no external anti-backflow Schottky diode requiredWide operating voltage, up to 9V Two LED charging status indicatorsChip temperature protection, overcurrent protection, undervoltage protectionBattery temperature protection, battery reverse shutdown, short-circuit protectionSwitching frequency 800KHz, available inductance 2.2uH-10uHAutomatic recharging functionCharging voltage control accuracy less than 1%Trickle current, constant current, constant voltage three-stage charging, battery protectionAdopt QFN16 4mm*4……
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