The MAX8856ETD+T is an USB/AC adapter, Li+ linear battery charger with integrated 50mohm battery switch in 14 pin TDFN package. This device is a 1-cell Li+ battery charge-management IC which operates from either a USB port or AC adapter. It integrates a battery disconnect switch, current-sense circuit, PMOS pass element and thermal-regulation circuitry. It eliminates external reverse-blocking Schottky diode to create a simple and small charging solution. The charging sequence initiates from power-OK indication through pre-qualification, fast-charge, top-off charge and finally charging-complete indication for single-cell Li+ batteries. Charging is controlled using constant current, constant voltage or constant die-temperature (CCCVCTJ) regulation for safe operation in handhelds.
- NTC thermistor input (THM) to protect the battery
- Undervoltage lockout below +3.4V and overvoltage protection up to +14V
- USB-compliant suspend mode (20μA)
- Selectable 100mA, 500mA and up to 1A input current limits
- Automatic current sharing between battery charging and system
- Die temperature regulation (+100°C)
- Low dropout voltage of 250mV at 0.5A
- Charge status and input supply detection flag
- Operating temperature range from -40°C to 85°C
电源管理, 便携式器材
(EN)
