Maxim Integrated MAX4959ELB T

Description
The MAX4959/MAX4960 overvoltage protection controllers safeguard low-voltage systems from high-voltage faults up to 28V. When the input voltage surpasses the overvoltage lockout (OVLO) threshold, these devices deactivate an external pFET to prevent damage to protected components. The undervoltage lockout (UVLO) threshold keeps the external pFET off until the input voltage reaches the appropriate level. An additional safety feature latches off the pFET when an incorrect low-power adapter is connected.
The MAX4959/MAX4960 control an external battery switchover pFET (P2) that activates the battery when the AC adapter is disconnected. The undervoltage and overvoltage trip levels are adjustable using external resistors.
The input is protected against 15kV HBM ESD when bypassed with a 1uF ceramic capacitor to ground. All devices are available in a compact 10-pin (2mm x 2mm) UDFN package and are specified for operation over the extended -40°C to 85°C temperature range.

Features
Overvoltage protection up to 28V
±2.5% accurate externally adjustable OVLO/UVLO thresholds
Battery switchover pFET control
Protection against incorrect power adapter
Low (100μA typ) supply current
25ms input debounce timer
25ms blanking time
10-pin (2mm x 2mm) μDFN packages

Applications
Notebooks
Laptops
Camcorders
Ultra-mobile PCs