MAX4959ELB+

The MAX4959ELB+ belongs to MAX4959/MAX4960 overvoltage protection controllers series which protect low-voltage systems against high-voltage faults of up to +28V. The MAX4959/MAX4960 control an external battery switchover pFET (P2)(see Figures 4 and 6)that switches in the battery when the AC adapter is unplugged. The undervoltage and overvoltage trip levels can be adjusted with external resistors. The input is protected against ±15kV HBM ESD when bypassed with a 1F ceramic capacitor to ground. When the input voltage exceeds the overvoltage lockout (OVLO)threshold, the MAX4959ELB+ turn off an external pFET to prevent damage to the protected components. All devices are available in a small 10-pin (2mm x 2mm)DFN and 10-pin MAX packages and are specified for operation over the extended -40°C to +85°C temperature range. The undervoltage lockout (UVLO)threshold holds the external pFET off until the input voltage rises to the correct level. An additional safety feature latches off the pFET when an incorrect low-power adapter is plugged in.

The features of MAX4959ELB+ can be summarized as (1)overvoltage protection up to +28V; (2)± 2.5% accurate externally adjustable OVLO/UVLO Thresholds; (3)battery switchover pFET Control; (4)protection against incorrect power adapter; (5)low (100A Typ)supply current; (6)25ms input debounce timer; (7)25ms blanking time; (8)10-Pin (2mm x 2mm)DFN and 10-Pin MAX Packages.

The absolute maximum ratings of MAX4959ELB+ are (1)IN, SOURCE1, GATE1, GATE2, to GND: -0.3V to +30V; (2)VDD to GND: -0.3V to +6V; (3)UVS, OVS, CB to GND: -0.3V to +6V; (4)continuous power dissipation (TA = +70°C)10-pin DFN (derate 5.0mW/°C above +70°C): 403mW; (5)10-pin MAX (derate 5.6mW/°C above +70°C): 444mW; (6)operating temperature range: -40°C to +85°C; (7)junction temperature: +150°C; (8)storage temperature range: -65°C to +150°C; (9)lead temperature (soldering, 10s): +300°C.