The XC6802 series is a constant-current/constant-voltage linear charger IC for single cell lithium-ion batteries, featuring constant-current/constant-voltage charge circuit, over heat protection circuit, and phase compensation circuit.
The XC6802 series is a constant‑current/constant‑voltage linear charger IC designed for single‑cell lithium‑ion batteries. It integrates a reference voltage source, battery voltage monitor, driver transistor, charge control circuitry, over‑heat protection, and phase‑compensation.
The device supports an externally set charge current up to 800 mA, provides a charge‑status output pin (/CHG), and is offered in SOT‑89‑5, SOT‑25, and USP‑6C packages. Detailed electrical characteristics, pin assignments, and typical performance graphs are included.
| Operating Voltage Range | 4.25 V ~ 6.0 V |
|---|---|
| Maximum Charge Current | 800 mA (MAX) |
| Charge Termination Voltage | 4.2 V ± 0.7 % |
| Trickle Charge Voltage | 2.9 V ± 3 % |
| Stand‑by Supply Current | 15 µA (typ.) |
| Operating Temperature Range | -40 °C ~ +85 °C |
| Package Types | SOT‑89‑5, SOT‑25, USP‑6C |
The charge current is set by connecting a resistor between the I_SEN pin and the V_SS pin; the current equals (V_ISEN / R_SEN) × 1000.
The IC can deliver up to 800 mA of charge current when configured with the appropriate resistor.