资 源 简 介
The MAX8606 complete 1-cell Li+ battery charge-managementIC operates from either a USB port or ACadapter. It integrates a battery disconnect switch, current-sense circuit, PMOS pass element, and thermalregulaTIoncircuitry, while eliminaTIng the externalreverse-blocking Schottky diode, to create a simpleand small charging soluTIon. The charging sequenceiniTIates from power-OK indication, through prequalification,fast-charge, top-off charge, and finally charging-complete indication for single-cell Li+ batteries.Charging is controlled using constant current, constantvoltage, or constant die-temperature (CCCVCTJ) regulationfor safe operation in handhelds.Two logic inputs (EN1 and EN2) select suspend mode,100mA, 500mA, or ≤1A input current limits to suit USBrequirements. Proprietary thermal-regulation circuitrylimits the die temperature to +100°C to prevent excessiveheat on the system PC board. Additional safetyfeatures include an NTC thermistor input (THM) andinternal timers to protect the battery. A 3.5V to 4.2V SYSoutput, in conjunction with the low-RDSON batteryswitch, powers the system even when the battery isdeeply discharged or not installed. The IC also offers a+3.3V/500μA output (VL), a charging status flag (CHG),and an input-supply detection flag (POK). TheMAX8606 operates from a +4.25V to +5.5V supply andincludes undervoltage lockout below +3.4V and overvoltageprotection up to +14V.ApplicationsCellular Phones, Smartphones, PDAsDigital Cameras, MP3 PlayersUSB Appliances, Charging Cradles and Docks
