Preliminary Datasheet KTS1650B 4.5 Amp Over-Voltage Protection IC with Surge Protection Features Brief Description The KTS1650B over-voltage protection (OVP) device Wide Input voltage range: 2.3V to 28V features an ultra-low 36m (typical) on-resistance high Up to 4.5A Continuous current capability current integrated MOSFET which actively protects low- Integrated 36m (typ) N-Channel MOSFET voltage systems from voltage supply faults up to +28V . DC Wide Over-Voltage threshold range An internal clamp protects the device from surges up Fixed internal: 6.4V to 200V. Adjustable: 4V to 24V Fast OVP response time: 0.1s (typ.) An input voltage exceeding the over-voltage threshold will Internal 15ms Startup Debounce cause the internal MOSFET to turn off, preventing Integrated Surge Protection up to +/-200V excessive voltage from damaging downstream devices. Low Quiescent Current: 100A (typ.) When the OVLO input set below the external OVLO select Thermal Shutdown and Short Circuit Protection voltage, the KTS1650B automatically chooses the internal Compliance to IEC61000-4-2 (Level 4) fixed OVLO threshold, preset to 6.4V (typical). The over- Contact: 8kV voltage protection threshold can be adjusted with optional Air Gap: 15kV resistor divider to a voltage between 4V and 24V. ESD Protection The KTS1650B is protected against over-current faults by Human Body Model: 2kV an internal over-temperature protection shutdown feature. Pb-free Package: 12-Bump WLCSP -40C to +85C Temperature Range The KTS1650B is available in a RoHS and Green compliant 12-Bump 2.156mm x 1.486mm x 0.620mm WLCSP. Applications Smartphones Tablet Mobile Internet Devices, Peripherals Typical Application Battery Battery Adapter/USB IN OUT Charger C V C IN I/O OUT 0.1F 1F KTS1650B PMIC R1 OVLO ACOK Application CTRL Processor R2 GND December 2018 Revision 03b Page 1 Company Confidential WW XXYY ZZZZ Preliminary Datasheet KTS1650B Pin Descriptions Pin Name Function A1 CTRL OUT power path is Enabled when CTRL is logic Low. Output of internal main high-current power switch. Connect OUT pins together in the PCB for A2, A3, B2 OUT proper operation. A4, B4, C4 GND Ground. Connect GND pins together in the PCB for proper operation. Open-drain power good output. ACOK is driven low during normal operation and becomes high B1 ACOK impedance when an out-of-range condition is detected. Connect a pull-up resistor between the logic pin and the system rail. B2, C2, C3 IN Voltage Input. Connect IN pins together in the PCB for proper operation. External OVLO Adjustment. Connect OVLO to GND when using the internal fixed threshold. C1 OVLO Connect a resistor-divider to OVLO to set the adjustable OVLO threshold. The optional external resistor divider is unrelated to the internal threshold. WLCSP-12 TOP VIEW TOP VIEW A CTRL OUT OUT GND B ACOK OUT IN GND C OVLO IN IN GND 1 2 3 4 12-Bump 2.156mm x 1.486mm x 0.620mm WLCSP Package Top Mark WW = Device ID Code XX = Date Code, YY = Assembly Code ZZZZ = Serial Number December 2018 Revision 03b Page 2 Company Confidential