SGM41526.pdf? 4A Synchronous 1.6MHz PWM Charger
? Up to 95.2% Charge Efficiency
? 30V Absolute Maximum Input Voltage Rating
? 4.5V to 22V Input Operating Voltage Range
? Dynamic Power Management (DPM)
? Select 2-, 3-, or 4-Cell with 4.2V/Cell
? Less than 18μA Battery Current (No Adapter)
? Less than 1.3mA Input Current (Charge Disabled)
? Safety
- Thermal Regulation, Thermal Shutdown
- Battery Thermistor Sense Hot/Cold Charge Suspend
- Input Under-Voltage Lockout (UVLO)
- Input Over-Voltage (ACOV) Protection
? Standalone charger and easy to configure
? High-efficiency, 1.2-MHz, synchronous switchmodebuck charger
? Single input to support USB input and high voltage adaptors
? 4.1-V / 4.2-V / 4.35-V / 4.4-V charge voltage
? 3.0-A maximum fast charge current
? 200-nA low battery leakage current at 4.5-V VBAT
? 4.25-μA VBUS supply current in IC disable mode
? Charge current thermal regulation at 120°C
? Precharge current: 10% of fast charge current
? Termination current: 10% of fast charge current
? Charge accuracy
– ±0.5% charge voltage regulation
– ±10% charge current regulation
? Available in WQFN 3x3-16 package
