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
