TOP POWER ASIC TP5100

TP5100 is a switching-buck type (double 8.4V / single 4.2V) lithium battery charging management chip. Its QFN16 ultra-compact packaging and simple peripheral circuit make TP5100 ideal for portable devices with large current charging management applications. Meanwhile, TP5100 has built-in input overcurrent protection, undervoltage protection, over temperature protection, short circuit protection, battery temperature monitoring, and reversing battery protection. TP5100 has a wide range of input voltage, from 5V to 12V. The charging process includes three stages: trickle pre-charge, constant current, constant voltage. Trickle pre-charge current and constant current can be adjusted through an external resistor, with maximum charging current up to 2A. TP5100, with a switching operation mode of frequency of 400 kHz, uses smaller peripheral components, and produces less heat while in charging operation with large current. TP5100 has built-in power PMOSFET, anti-intrusion circuit, so there is no need to have external anti-intrusion protection with Schottky diode.

• Double / single 8.4V/4.2V rechargeable lithium battery
• Built-in power MOSFET, switching operation mode, less heat, simple peripheral
• Programmable charging current, 0.1A--2A
• Programmable pre-charge current, 20%-100%
• No need of external Schottky diode for anti-intrusion
• Wide operating voltage up to 12V
• Red and green LED charging status indicator
• Chip temperature protection, overcurrent protection, undervoltage protection
• Battery temperature protection, reverse battery shutdown, short circuit protection
• Switching frequency: 400KHz, available inductance: 4.7uH-22uH
• PWR_ON-power, battery charging switching control
• Less than 1% of charging voltage control precision
• Trickle, constant current, constant voltage charging stages to protect battery
• Using QFN16 4mm * 4mm ultra-small packaging

• portable devices, various chargers
• smart phones, PDAs, mobile cellular phone
• MP4, MP5 players, Tablet PC
• Power Tools
• PTT