1 Overview: 22 Features: ..... 23 Typical Application Circuit Diagram: .. 24 Pin Definition: ...... 34.1 VCC (PIN 10): 5V power supply..34.2 VSS (PIN 5): Power ground......34.3 RST (PIN 4): Power reset / input signal34.4 BAT2 (PIN14): B channel battery voltage measurement / input signal.....34.5 BAT1 (PIN13): A channel battery voltage measurement / input signal...34.6 LED (PIN6): LED indicator / output signal.....34.7 CH1 (PIN12): A channel output signal......34.8 CH2 (PIN11): B channel LED indicator / output signal........34.9 PWM (PIN11): Charging current regulation terminal....34.10 NC (PIN2,3,7,8): Unused I/O ..35 Battery charging cut-off condition: ....46 LED status display and buzzer warning: ....47 Charging method: . 57.1 The first stage is fast charging: ...57.2 The second stage is trickle charging: ...58 Packaging: SOP-14 PIN. 6
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