Features

• Wide Input voltage range: 2.3V to 28V

• Up to 4A Continuous current capability

• Integrated 28mΩ (typ) N-Channel MOSFET

• Wide Over-Voltage threshold range

 Fixed internal: 5.95V

 Adjustable: 4V to 22V

• Fast OVP response time: 0.1μs (typ.)

• Internal 15ms Startup Debounce

• Integrated Surge Protection up to 100V

• Low Quiescent Current: 70μA (typ.)

• Thermal Shutdown and Short Circuit Protection

• Compliance to IEC61000-4-2 (Level 4)

 Contact: ±8kV

 Air Gap: ±15kV

• ESD Protection

 Human Body Model: ±2kV

• Pb-free Package: 12-Bump WLCSP

• -40°C to +85°C Temperature Range

Applications

• Smartphones

• Tablet

• Mobile Internet Devices, Peripherals

Brief Description

The KTS1681A over-voltage protection (OVP) device

features an ultra-low 28mΩ (typical) on-resistance high

current integrated MOSFET which actively protects lowvoltage

systems from voltage supply faults up to +28VDC.

An internal clamp protects the device from surges up to

100V.

An input voltage exceeding the over-voltage threshold will

cause the internal MOSFET to turn off, preventing

excessive voltage from damaging downstream devices.

When the OVLO input set below the external OVLO select

voltage, the KTS1681A automatically chooses the internal

fixed OVLO threshold, preset to 5.95V (typical). The overvoltage

protection threshold can be adjusted with optional

resistor divider to a voltage between 4V and 22V.

The KTS1681A is protected against over-current faults by

an internal over-temperature protection shutdown feature.

The KTS1681A is available in a RoHS and Green

compliant 12-Bump 1.70mm x 1.21mm x 0.62mm WLCSP.