● Protect High-Power Portable Devices

   Wide Operating Input Voltage Protection from 2.5V to 28V

   Integrated 25mΩ (TYP) N-Channel MOSFET Switch

● Flexible Overvoltage Protection Design

   Adjustable Over-Voltage Protection Trip Level

   Wide Adjustable OVLO Threshold Range from 4V to 20V

   Preset Internal Accurate OVLO Thresholds: 15.39V (SGM40656)

● Additional Protection Features Increase System Reliability

   Surge Immunity to +120V

   Soft-Start to Minimize In-Rush Current

   Internal 18.5ms Startup Debounce

   Thermal Shutdown Protection

● -40℃ to +85℃ Operating Temperature Range

● Available in Green WLCSP-1.30×1.83-12B Package

The SGM40656/7/8 over-voltage protection devices feature a low 25mΩ (TYP) RON internal FET and protect low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the devices from surges up to +120V. When the input voltage exceeds the over-voltage threshold, the internal FET is turned off to prevent damage to the protected downstream components.

The over-voltage protection threshold can be adjusted with optional external resistors to any voltage between 4V and 20V. With the OVLO input set below the external OVLO select voltage, the SGM40656/7/8 automatically choose the accurate internal trip thresholds. The internal over-voltage thresholds (OVLO) are preset to 15.39V/6.8V/5.95V typical (SGM40656/7/8). The devices feature an open-drain nACOK output indicating a stable supply between minimum supply voltage and VOVLO. The SGM40656/7/8 are also protected against over-current events by an internal thermal shutdown.