SGM40656.pdf
No.10955
● 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.
