MAX8856ETD+T

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

Applications

Power Management, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party