8682l Ic Datasheet 〈2026 Edition〉

Where ( V_PROG ) is typically during constant-current charging.

[ I_CHG = \fracV_PROG \times 1000R_PROG ] 8682l ic datasheet

Occasionally, the 8682L appears in an 8-pin package with additional pins for thermal pad (exposed pad for heat dissipation) and dual LED drive outputs. Always verify the top marking. Where ( V_PROG ) is typically during constant-current

| Parameter | Min | Typ | Max | Unit | Condition | |--------------------------|------|-----|------|-------|--------------------------------| | Input voltage (VCC) | 4.5 | 5.0 | 6.5 | V | | | Standby current | - | 55 | 100 | µA | VCC=5V, no battery | | Battery regulation voltage| 4.15 | 4.20| 4.25 | V | | | Trickle charge threshold | 2.8 | 2.9 | 3.0 | V | Battery voltage below this = trickle| | Trickle charge current | - | 10% | - | I_prog| | | Programmable charge current| 50 | - | 800 | mA | Set by Rprog | | PROG pin voltage (constant current mode)| 0.95| 1.0| 1.05 | V | | | Thermal foldback temp | - | 120 | - | °C | Reduces current | | Input overvoltage protection| 6.6 | 7.0| 7.2 | V | | The most critical design parameter for the 8682L is the programming resistor connected between PROG (pin 6) and GND. The formula is: | Parameter | Min | Typ | Max

The 8682L sits between low-cost TP4056 (larger package) and higher-performance MCP73831 (more expensive). The 8682L IC is a competent, low-cost linear charger for single-cell Li-ion batteries, especially in space-constrained portable devices. While finding a canonical 8682L IC datasheet can be challenging, the information compiled here—pinout, electrical specs, application circuit, and troubleshooting—provides a reliable foundation for most design and repair tasks.

| Pin No. | Name | Function Description | |---------|-----------|-------------------------------------------------------------| | 1 | CHRG | Open-drain charge status output (active low – charging) | | 2 | GND | Ground connection | | 3 | BAT | Battery connection pin (to positive terminal of Li-ion cell) | | 4 | VCC | Input supply voltage (4.5V to 6.5V typical) | | 5 | STDBY | Open-drain standby/complete status output (active low – done)| | 6 | PROG | Charge current programming pin (connect resistor to GND) |

| Condition | CHRG (Red) | STDBY (Green) | Battery current | |-------------------------------|-------------------|-------------------|-----------------| | No battery (or BAT > 4.25V) | Off (high-Z) | Off (high-Z) | 0mA | | VCC missing (USB unplugged) | Off | Off | 0mA (load from battery? none) | | Trickle charge (BAT < 2.9V) | On (low) | Off (high-Z) | ~10% I_prog | | Constant current / constant voltage charging | On (low) | Off (high-Z) | I_prog down to 1/10th | | Charge complete (BAT=4.20V) | Off (high-Z) | On (low) | 0mA (or very low) | | Over-temperature (die >120°C) | Blinking (0.5Hz)?* | Off/Blinking* | Reduced current |