KTS1680C KINETIC | Alldatasheet

Document overview

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Technical content

Features

  • Surge and ESD protected Input  Surge Protection ■ IEC 61000-4-5: > 100V  ESD Protection ■ IEC 61000-4-2
  • Contact: ±15kV
  • Air Gap: ±15kV ■ Human Body Model: ±2kV
  • Wide Input voltage range  2.3V to 28V
  • Low Quiescent Current: 70µA (typ.)
  • Integrated 28mΩ (typ) N-Channel MOSFET
  • Fast turn-off response time  100ns
  • Flexible trip-point options  Fixed 6.3V  Adj. 4V to 25V
  • Auto-enabled switch with typ. 15ms debounce time
  • Additional Under voltage (UVLO), Short-circuit and Thermal shutdown protection
  • Open-drain power good output
  • Pb-free WLCSP34-12 package
  • -40°C to +85°C Temperature Range

Applications

  • Smartphones
  • Tablet Computers
  • Mobile Internet Devices
  • Peripherals Brief Description The KTS1680C overvoltage protection device features an ultra-low 28mΩ (typical) on-resistance high current integrated MOS FET which actively protects low-voltage systems from voltage supply faults up to +28V DC. An internal clamp protects the device from surges up to 100V. An input voltage exceed ing the overvoltage 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 KTS1680C automatically chooses the internal fixed OVLO threshold, preset to 6.3V (typical). The overvoltage protection thr eshold can be adjusted with optional resistor divider to a voltage between 4V and 25V. The device features an open-drain output ACOK̅̅̅̅̅̅̅̅̅ indicating a stable supply between the minimum supply voltage and OVLO threshold. The KTS1680C is also protected against over-current faults and has thermal protection. The KTS1680C is available in a RoHS and Green compliant 12-Bump 1.70mm x 1.21mm x 0.62mm WLCSP. Typical Application Overvoltage Protected Load Switch with Surge Protection V I/O OVLO IN ACOK OUT GND C OUT 1µF C IN 0.1µF Battery Charger Application Processor Adapter/USB Battery PMIC KTS1680C CTRL

t KTS1680C October 2021 – Revision 04c Page 2 Company Confidential Pin Descriptions Pin # Name Function A1 CTRL OUT power path is Enabled when CTRL is logic Low. A2, A3, B2 OUT Output of internal main high-current power switch. Connect OUT pins together in the PCB for proper operation. A4, B4, C4 GND Ground. Connect GND pins together in the PCB for proper operation. Open-drain power good output. ACOK̅̅̅̅̅̅̅̅̅ is driven low during normal operation and becomes high impedance when an out-of-range condition is detected. Connect a pull-up resistor between the logic pin and the system rail. B3, C2, C3 IN Voltage Input. Connect IN pins together in the PCB for proper operation. C1 OVLO External OVLO Adjustment. Connect OVLO to GND when using the internal fixed threshold. Connect a resistor-divider to OVLO to set the adjustable OVLO threshold. The optional external resistor divider is unrelated to the internal threshold. WLCSP34-12 12-Bump 1.70mm x 1.21mm x 0.62mm Top Mark WW = Device ID Code XX = Date Code, YY = Assembly Code ZZZZ = Serial Number TOP VIEW TOP VIEW XXYY ZZZZ C B A CTRL OVLO OUT OUT IN OUT IN IN GND GND GND WW

t KTS1680C October 2021 – Revision 04c Page 3 Company Confidential Absolute Maximum Ratings1 (TA = 25C unless otherwise noted) Symbol Description Value Units IN2, OUT Input, output Voltages -0.3 to 29 V OVLO OVLO Pin -0.3 to 7 V CTRL Control Pin -0.3 to 6 V IN, OUT Current Continuous Current 4.5 A Peak Current (10msec) 8 A TJ Junction Operating Temperature Range -40 to 150 C Ts Storage Temperature Range -65 to 150 C TLEAD Maximum Soldering Temperature (at leads, 10 sec) 260 C Thermal Capabilities Symbol Description Value Units θJA Thermal Resistance – Junction to Ambient3 73 C/W PD Maximum Power Dissipation at TA ≤ 25C 1.28 W ΔPD/ΔT Derating Factor Above TA = 25C -12.8 mW/C Recommended Operating Range Description Value Input Voltage Range 2.3V to 28V Output Load Capacitance Range up to 100µF

Ordering Information

Part Number Marking4 Operating Temperature Package KTS1680CEUZ-TR MFXXYYZZZZ -40°C to +85°C WLCSP34-12 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time. 2. Survives burst pulses up to 100V with 2Ω series resistance. 3. Junction to Ambient thermal resistance is highly dependent on PCB layout. Values are based on thermal properties of the device when soldered to an EV board 4. “XXYYZZZZ” is the date code, assembly code and serial number.

t KTS1680C October 2021 – Revision 04c Page 4 Company Confidential Electrical Characteristics5 VIN = +2.3V to +28V and CIN = 0.1µF. Unless otherwise noted, the Min and Max specs are applied over the full operation temperature range of –40°C to +85 °C, while Typ values are specified at room temp erature (25°C). VIN = 5V, IIN ≤ 4.5A. Symbol Description Conditions Min Typ Max Units VIN Input operating range 2.3 28 V VIN_CLAMP Input clamp voltage IIN = 10mA, TA = +25°C 32 V IIN Input supply current VIN = 5V 70 120 A IIN_Q OVLO supply current VOVLO = 3V, VIN = 5V, VOUT = 0V 63 120 A VIN_UVLO Under voltage lockout threshold VIN rising 1.9 V VUVLO_HYST Under voltage lockout hysteresis 0.1 V VIN_OVLO Internal over voltage trip level VIN rising, TA = +25°C 6.0 6.3 6.6 V VIN_OVLO_HYS OVLO Hysteresis VIN falling, TA = +25°C 0.2 V VOVLO_TH OVLO External threshold TA = +25°C 1.15 1.21 1.27 V Adjustable OVLO threshold range 4 25 V VOVLO_SEL External OVLO select threshold 0.2 0.25 0.3 V RDS(ON) Switch On-Resistance VIN = 5V, IIN = 1A, TA = +25°C 28 38 mΩ IOVLO OVLO input leakage current VOVLO = VOVLO_TH -0.1 0.1 µA CTRL VCTRL_H CTRL logic high threshold 1.4 V VCTRL_L CTRL logic low threshold 0.4 V VOL ACOK̅̅̅̅̅̅̅̅̅ output low voltage VI/O = 3.3V, ISINK = 1mA 0.4 V ESD PROTECTION VESD Human Body Model (HBM) Model = 2 All pins ±2 kV IEC 61000-4-2 Contact discharge IN pin ±15 kV IEC 61000-4-2 Air gap discharge IN pin ±15 kV Thermal Shutdown TSHDN Shutdown Temperature 130 C Shutdown Temperature Hysteresis 20 C 5. KTS1680C is guaranteed to meet performance specifications over the –40°C to +85°C operating temperature range by design, characterization and correlation with statistical process controls.

Figure 1. Timing Diagram

t KTS1680C October 2021 – Revision 04c Page 6 Company Confidential Typical Characteristics VIN = 5V, CIN = 0.1µF, COUT = 1µF, OVLO pin = GND, Temp = 25°C unless otherwise specified. Input Supply Current vs Input Voltage (no load) Normalized RDSON vs. Temperature Normalized RDSON vs. Output Current Normalized Debounce Time vs. Temperature Normalized Fixed OVLO vs. Temperature (OVLO pin GND) Normalized Adjustable OVLO Threshold vs. Temperature 100 120 140 0 4 8 12 16 20 24 28 Input Supply Current (µA) Input Voltage (V) 0.0 0.5 1.0 1.5 2.0 -40 -15 10 35 60 85 Normalized RDS_ON Temperature (°C) IOUT = 1A Normalized to TA = +25°C 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 0 1 2 3 Normalized RDSON Output current (A) Normalized to 1A 0.0 0.5 1.0 1.5 2.0 -40 -15 10 35 60 85 Normalized Debounce Time Temperature (°C) Normalized to TA = +25°C 0.90 0.95 1.00 1.05 1.10 -40 -15 10 35 60 85 Normalized Threshold Voltage Temperature (°C) Normalized to TA = +25°C 0.90 0.95 1.00 1.05 1.10 -40 -15 10 35 60 85 Normalized Threshold Voltage Temperature (°C) Normalized to TA = +25°C

t KTS1680C October 2021 – Revision 04c Page 7 Company Confidential Typical Characteristics VIN = 5V, CIN = 0.1µF, COUT = 1µF, OVLO pin = GND, Temp = 25°C unless otherwise specified. Power-up (COUT = 10µF, 100mA load) Over Voltage Fault Protection (VIN 5V to 8V step) Short-Circuit Fault Protection (OUT short to GND) Surge Transient (100V) Iout 100mA / div 4ms / div Vout 5V / div Vin 5V / div Iout 100mA / div 10µs / div Vout 5V / div Vin 5V / div 5V / div Iout 1A / div 10ms / div 5V / div Iin 10A / div 10µs / div Vin 20V / div

t KTS1680C October 2021 – Revision 04c Page 8 Company Confidential Functional Block Diagram Functional Description The KTS1680C is inserted between the power supply or charger source and the load to be protected. The KTS1680C consists of a low resistance switch, under-voltage lockout protection (UVLO), overvoltage monitor and protection (OVLO) and an ACOK̅̅̅̅̅̅̅̅̅ output flag. The KTS1680C switch device features a low on-resistance (RDSON) internal N-Channel MOSFET and protect s low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the device from input surge transients up to 1 00V. If the input IN pin voltage exceeds the overvoltage threshold, the internal FET is turned off to prevent damage to any downstream components connected to the output. A 15ms debounce time built into the device delays the internal FET turn on time. The power good flag (ACOK̅̅̅̅̅̅̅̅̅) output pin can notify the system of the normal operation by pulling its output low. When an input power overvoltage or over-temperature occurs, the device releases the internal open-drain and the ACOK̅̅̅̅̅̅̅̅̅ output is set to logic high by the external pull-up resistor in order to alert the system. UVLO (Under Voltage Lockout) The device has a built−in under voltage lock out (UVLO) circuit. During VIN positive going slope, the output (OUT) remains disconnected from the input (IN) until VIN voltage exceeds VIN_UVLO 1.9V typical. This circuit has a 100mV hysteresis to provide noise immunity. OVLO VIN Detection and OVP Control OUT GND Internal Band Gap Reference CTRL IN ACOK Charge Pump Logic Control High Voltage Surge Clamp Thermal Detection

t KTS1680C October 2021 – Revision 04c Page 9 Company Confidential OVLO (Over Voltage Lockout) The KTS1680C can be configured for either an internal OVLO threshold, or an adjustable threshold when using the OVLO pin as a sense pin. By connecting the OVLO pin to ground, the internal OVLO comparator uses the internally fixed OVLO value VIN_OVLO of 6.3V typical. If an external resistor-divider is connected to OVLO and VOVLO exceeds the OVLO select voltage, V OVLO_SELECT, the internal OVLO comparator reads the IN fraction fixed by the external resistor divider. Starting with R1 = 1MΩ to minimize current consumption, R2 can be calculated from the following formula: )1( R RVV THRESHOVLOEXTOVLO += Internal MOSFET Switch In normal operating mode (main power switch turned on), the CTRL input must be set to the logic low state (CTRL = GND).The KTS1680C incorporates an internal N-Channel MOSFET with ultra-low RDS on-resistance of 28mΩ (typ). The MOSFET is internally driven by a charge pump that generates a necessary gate voltage above IN. The ACOK̅̅̅̅̅̅̅̅̅ output is an active -low open -drain flag reporting good operation of the device. A pull -up resistor should be connected from the ACOK̅̅̅̅̅̅̅̅̅ pin to the system I/O rail. A fault is flagged when the output is being pulled high in the case of an overvoltage or over-temperature fault occurring. Thermal Protection The internal FET turns off when the junction temperature exceeds +130 °C (typ). The device exits thermal shutdown after the junction temperature cools by 20°C (typ) hysteresis. Input Capacitor A 0.1μF or larger capacitor is typically recommended for CIN which should be located as close to the device IN pin as possible. For higher current operation, ceramic capacitors are recommended for CIN. During surge voltage transients, the internal input clamp keeps the input IN pin voltage below 40V, so 50V rated capacitors are ideal for most OVP applications. Output Capacitor A small output capacitor COUT can be added to accommodate various load transient condition. USB On-The-GO (OTG) Operation When used in an OTG application the KTS1680C can provide power from OUT to IN. Initially, the OTG voltage applied at OUT will forward bias the power switch bulk diode and present a voltage drop of approximately 0.7V between OUT and IN. The maximum current in this mode is limited by the thermal perfo rmance of the device and at an ambient temperature of 25°C AV WIMAX 82.17.0 28.1 == This is purely a transitionary condition as once the voltage at IN exceeds the UVLO voltage of 1.9V and the debounce time of 15ms has elapsed, the main power switch will turn fully ON, significantly reducing the voltage drop from OUT to IN.

t KTS1680C October 2021 – Revision 04c Page 10 Company Confidential Packaging Information WLCSP34-12 (1.70mm x 1.21mm x 0.62mm) Recommended Footprint WLCSP43 1.57x1.17 3 X 0.400mm A1 Corner Top Side Die Coating Top View Bottom ViewSide View 0.620 ± 0.045mm 0.025 ± 0.003mm 1.704mm ± 0.030mm 1.214mm ± 0.030mm

12 X Ø

0.27 ± 0.027mm 2 X 0.400mm 0.215 ± 0.022mm WLCSP Recommended Footprint (KTS16xx) (NSMD Pad Type) * Dimensions are in millimeters. 0.40mm 0.40mm 0.225mm Copper Pad Diameter 0.325mm Solder Mask Opening 0.80mm 1.20mm Kinetic Technologies cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Kinetic Technologies product. No intellectual property or circuit patent licenses are implied. Kinetic Technologies reserves the right to change the circuitry and specifications without notice at any time.