● Protect High-Power Portable Devices

   Wide Operating Input Voltage Protection from 2.5V to 28V

   Integrated 20mΩ (TYP) N-Channel MOSFET Switch

● Flexible Over-Voltage Protection Design

   Adjustable Over-Voltage Protection Trip Level

   Wide Adjustable OVLO Threshold Range from 4V to 20V

   Internal Preset OVLO Thresholds: 5.95V (SGM40658)

● Additional Protection Features Increase System Reliability

   Surge Immunity up to +120V

   Soft-Start to Minimize In-Rush Current

   Internal 15ms Startup Debounce

   Thermal Shutdown Protection

● Enable Function

● -40℃ to +85℃ Operating Temperature Range

● Available in Green WLCSP-1.31×1.84-12B Package

The SGM40657/8 over-voltage protection devices feature a low 20mΩ (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. If the OVLO input is below the external OVLO select voltage, the SGM40657/8 automatically choose the internal trip thresholds. The internal over-voltage thresholds (VIN_OVLO) are preset to be 6.82V/5.95V typical (SGM40657/8). The devices feature an open-drain ACOK output indicating a stable supply between minimum supply voltage and VOVLO. The SGM40657/8 are also protected against over-current events by an internal thermal shutdown.