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
• 1.6-MHz Synchronous Switched-Mode Charger
• Up to 92% Efficiency
• 30V Input Rating With Adjustable OvervoltageProtection
• 1-Cell, 2-Cell, or 3-Cell With 4.2 V/Cell
• High Integration
– Automatic Power Path Selector Between
• Adapter and Battery
– Integrated 20-V Switching MOSFETs
– Integrated Bootstrap Diode
– Internal Digital Soft Start
• Safety
– Thermal Shutdown
– Cycle-by-Cycle Current Limit
