CW1073AAAS battery protection IC

CW1073 6~7 cell battery protection IC

CW1073 series product is a lithium battery protection chip with built-in high-precision detection and delay circuit, suitable for 6 to 7 strings of lithium ion batteries or lithium polymer battery packs. Provides protection functions such as overcharge detection, overdischarge detection, overcurrent detection, equalization, disconnection detection, and high and low temperature charging and discharging for lithium battery packs. CW1073 has built-in MOSFET drive function, supports external PWM signal to control DO_PWM terminal output through DCTRL terminal, realizes motor speed regulation and soft start function.

Features

? Overcharge detection function

Threshold range 3.750V, 4.175V~4.450V, 25mV step, ±25mV accuracy

? Overdischarge detection function

Threshold range 2.100V~3.000V, 100mV step, ±30mV accuracy

? Overcurrent detection function

- Overcurrent detection 1

Threshold range 0.050V~0.100V, 50mV step, ±5mV accuracy

- Overcurrent detection 2

Threshold range 0.100V~0.200 V, 100mV step, ±5mV accuracy

- Short circuit protection

Threshold range 0.200V~0.500V, 100mV step, ±10mV accuracy

? Temperature detection function

- Charging high and low temperature protection, the temperature can be set externally

- Discharge high temperature protection, discharge low temperature protection optional

? Equalization function

? Switch between 6 and 7 batteries through the SEL terminal

? Disconnection detection function

? Load detection function

PWM controlled drive

? Low operating current

- Operating 15μA (25°C)

- 5μA in sleep state (25°C)

? Package: SSOP24

Application field

? electrical tools

? electric bicycle

? Vacuum cleaner

? Li-ion and Li-polymer battery packs