KTS1686 Overvoltage Protector with Bidirectional Blocking and Surge Protection Features Brief Description Wide Input voltage range: 3.0V to +28V The KTS1686 over-voltage protection device features high Integrated typical 65m N-Channel MOSFET current integrated N-Ch MOSFETs with an ultra-low IN to 4.5A Continuous Current OUT on-resistance of 65m (typical), actively protecting Wide Over-Voltage threshold range low-voltage systems from voltage supply faults up to Adjustable: 5V to 22V +28VDC. An internal clamp protects the device from Fixed: 5.885V 3% surges up to +100V. Fast Over-Voltage response time 100ns An input voltage exceeding the over-voltage threshold will Start-up Debounce time : 20ms (typ.) cause the internal MOSFET to turn off, preventing Low Quiescent Current : 140A (typ.) excessive voltage from damaging downstream devices. Integrated Protection Thermal Shutdown When the OVLO input set below the external OVLO select Under voltage protection (UVLO) voltage, the KTS1686 automatically chooses the internal Soft-Start fixed OVLO threshold, preset to 5.885V (typical). The over- OUT to IN Reverse Blocking voltage protection threshold can be adjusted with optional Open-drain & Logic Output Power Good pins resistor divider to a voltage between 5V and 22V. Integrated Surge Protection up to +100V The KTS1686 also features reverse bias blocking, Pb-free Package: preventing any voltage present at OUT not feeding back 15-Bump WLCSP 1.6mm x 2.1mm into IN when the device is in the OFF state. When OTG EN -40C to +85C Temperature Range is high, the path from OUT to IN is enabled, to permit the powering of external OTG peripherals. Applications The KTS1686 also features additional protection including enhanced ESD protection and thermal protection to protect Smartphones and Tablets against over-load conditions. Mobile Internet Devices Peripherals, E-Readers The KTS1686 is available in a RoHS and Green compliant 15-Bump 1.6mm x 2.1mm WLCSP. Typical Application V V IN OUT Adapter/ Battery IN OUT Battery Charger USB C OUT 1F C IN KTS1686 0.1F R1 PMIC ACOK V IO R3 OVLO 100K R4 100K Optional R2 ACOK (For adjustable OVLO) Application Processor OTG EN GND November 2016 - Revision 04a Page 1 Company Confidential KTS1686 Pin Descriptions Pin Name Function Output of internal main high-current power switch. Connect all OUT pins A1-A4, B1 OUT together in the PCB for correct operation. Bypass OUT with a 1F ceramic capacitor. A5 OTG EN Active high enable input for OTG operation mode. Over-voltage Protected Input. Connect all OUT pins together in the PCB B2, C1-C4 IN for correct operation. Bypass IN with 0.1F ceramic capacitor as close as possible to the device. 1.8V Logic Output. ACOK is driven high after input voltage is stable B3 ACOK between minimum VIN and VOVLO when OTG EN = 0. Connect a pulldown resistor from ACOK to ground. External OVLO adjustment. Connect OVLO to GND when using the B4 OVLO internal threshold. Connect a resistor-divider to OVLO to set a different OVLO threshold. Open-Drain Flag Output. ACOK is driven low after input voltage is stable B5 between minimum VIN and VOVLO when OTG EN = 0. Connect a pull- ACOK up resistor from ACOK to the logic I/O voltage of the host system. C5 GND Ground. WLCSP-15, 1.6mm x 2.1mm 15-Bump 1.6mm x 2.1mm x 0.640mm WLCSP Package YYZZ (Date Code and Assembly Code) XX = Device Code (Top Mark) (Top View) (Top View) 1 2 3 4 5 A OUT OUT OUT OUT OTG EN IL OUT IN ACOK OVLO ACOK B YYZZ IN IN IN IN GND C November 2016 - Revision 04a Page 2 Company Confidential