KTS1680AEUZ-TR

Advanced Information KTS1680A Over-Voltage Protected Load Switch with Surge Protection Features Brief Description • Surge and ESD protected Input  Surge Protection ■ IEC 61000-4-5: > 100V  ESD Protection ■ IEC 61000-4-2 (Level 4) • Contact: ±8kV • 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 5.95V  Adj. 4V to 22V • 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 WLCSP-12 package • -40°C to +85°C Temperature Range The KTS1680A over-voltage protection device features an ultra-low 28mΩ (typical) on-resistance high current integrated MOSFET which actively protects low-voltage 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 KTS1680A 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 device features an open-drain output ̅̅̅̅̅̅̅̅̅ ACOK indicating a stable supply between the minimum supply voltage and OVLO threshold. The KTS1680A is also protected against over-current faults and has thermal protection. The KTS1680A is available in a RoHS and Green compliant 12-Bump 1.16mm x 1.65mm x 0.64mm WLCSP. Applications • Smartphones • Tablet Computers • Mobile Internet Devices • Peripherals Typical Application Adapter/USB IN C IN 0.1µF Battery Charger OUT VI/O KTS1680A PMIC R1 OVLO ACOK CTRL R2 October 2017 – Revision 02b Battery C OUT 1µF Application Processor GND Page 1 Company Confidential Advanced Information KTS1680A Pin Descriptions Pin # Name Function A1 CTRL A2, A3, B2 OUT A4, B4, C4 GND B1 ̅̅̅̅̅̅̅̅̅ ACOK B3, C2, C3 IN C1 OVLO 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 proper operation. 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 impedance when an out-of-range condition is detected. Connect a pull-up resistor between the logic pin and the system rail. 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. 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 WW XXYY ZZZZ 12-Bump 1.16mm x 1.65mm x 0.64mm WLCSP Package Top Mark WW = Device ID Code = LS XX = Date Code, YY = Assembly Code ZZZZ = Serial Number October 2017 – Revision 02b Page 2 Company Confidential Advanced Information KTS1680A Absolute Maximum Ratings1 (TA = 25C unless otherwise noted) Symbol Description IN2, Value Units Input, output Voltages -0.3 to 29 V OVLO OVLO Pin -0.3 to 7 V CTRL ̅̅̅̅̅̅̅̅̅ ACOK Control Pin ̅̅̅̅̅̅̅̅̅ Pin ACOK -0.3 to 6 V -0.3 to 6 V 4.5 A 8 A OUT IN, OUT Current Continuous Current Peak Current (10msec) TJ Junction Operating Temperature Range -40 to 150 C Ts Storage Temperature Range -65 to 150 C 260 C TLEAD Maximum Soldering Temperature (at leads, 10 sec) Thermal Capabilities Symbol Description Value Units 73 C/W Maximum Power Dissipation at TA ≤ 25C 1.28 W Derating Factor Above TA = 25C -12.8 mW/C θJA Thermal Resistance – Junction to Ambient3 PD ΔPD/ΔT 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 KTS1680AEUZ-TR LSXXYYZZZZ -40°C to +85°C WLCSP-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. October 2017 – Revision 02b Page 3 Company Confidential Advanced Information KTS1680A 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 temperature (25°C). VIN = 5V, IIN ≤ 3.5A. Symbol VIN Description Conditions Input operating range Min Typ 2.3 Max Units 28 V VIN_CLAMP Input clamp voltage IIN = 10mA, TA = +25°C 32 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 VIN_OVLO_HYS VOVLO_TH VOVLO_SEL RDS(ON) IOVLO Internal over voltage trip level VIN rising, TA = +25°C OVLO Hysteresis VIN falling, TA = +25°C OVLO External threshold TA = +25°C Adjustable OVLO threshold range 5.68 5.95 1.15 0.2 Switch On-Resistance VIN = 5V, IIN = 1A, TA = +25°C OVLO input leakage current VOVLO = VOVLO_TH 6.18 0.2 1.21 4 External OVLO select threshold V V V 1.27 V 22 V 0.25 0.3 V 28 38 mΩ 0.1 µA -0.1 CTRL VCTRL_H CTRL logic high threshold VCTRL_L CTRL logic low threshold 1.4 V 0.4 V 0.4 V 1 A ̅̅̅̅̅̅̅̅̅) Digital Signals (ACOK VOL VACOK_LEAK ̅̅̅̅̅̅̅̅̅ ACOK output low voltage ̅̅̅̅̅̅̅̅̅ ACOK leakage current VI/O = 3.3V, ISINK = 1mA VI/O = 3.3V, ̅̅̅̅̅̅̅̅̅ ACOK de-asserted -1 ESD PROTECTION Human Body Model (HBM) Model = 2 All pins VESD ±2 kV IEC 61000-4-2 Contact discharge IN pin ±8 kV IEC 61000-4-2 Air gap discharge IN pin ±15 kV Shutdown Temperature 130 C Shutdown Temperature Hysteresis 20 C Thermal Shutdown TSHDN 5. KTS1680A 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. October 2017 – Revision 02b Page 4 Company Confidential Advanced Information KTS1680A Timing Characteristics (Figure 1) Symbol Description Conditions tDEB Debounce time Time from 2.1V < VIN < VIN_OVLO to VOUT = 10% of VIN 15 ms tSS Soft-start time VOUT = 10% of VIN to soft-start off 15 ms 2 ms 100 ns tON Switch turn-on time tOFF Switch turn-off time Min Typ VIN = 5V, RL = 100Ω, CLOAD = 100µF, VOUT from 10%, VIN to 90% VIN VIN > VOVLO to VOUT = 80% of VIN, RL = 100Ω, VIN rising at 2V/µs Max Units OVLO Thres hold IN 0V UVLO Thres hold tDEB Under Voltage Lock Out tON OUT 0V tDEB tOFF tDEB 80% 90% 10% tSS ACOK 0V Figure 1. Timing Diagram October 2017 – Revision 02b Page 5 Company Confidential Advanced Information KTS1680A Typical Characteristics VIN = 5V, CIN = 0.1µF, COUT = 1µF, OVLO pin = GND, Temp = 25°C unless otherwise specified. Normalized RDSON vs. Output Current Normalized RDSON vs. Temperature 3.0 2.0 IOUT = 1A Normalized to TA = +25 C Normalized RDS_ON Normalized RDS_ON 2.5 2.0 1.5 1.0 1.5 1.0 0.5 0.5 0.0 0.0 0.0 0.5 1.0 1.5 2.0 2.5 -40 3.0 -15 Output Current (A) Input Supply Current vs. Input Voltage (no load) 10 35 Temperature (°C) 60 85 Normalized Debounce Time vs. Temperature 200 2.0 Normalized Debounce Time Input Supply Current (µA) Normalized to TA = +25 C 160 120 80 40 1.5 1.0 0.5 0 0.0 0 4 8 12 16 20 24 -40 28 -15 Input Voltage (V) Normalized Fixed OVLO vs. Temperature (OVLO pin GND) 60 85 Normalized Adjustable OVLO Threshold vs. Temperature 1.10 1.10 Normalized to TA = +25 C Normalized Threshold Voltage Normalized Threshold Voltage 10 35 Temperature (°C) 1.05 1.00 0.95 Normalized to TA = +25 C 1.05 1.00 0.95 0.90 0.90 -40 -15 10 35 Temperature (°C) October 2017 – Revision 02b 60 -40 85 Page 6 -15 10 35 Temperature (°C) 60 85 Company Confidential Advanced Information KTS1680A Functional Block Diagram IN OUT High Voltage Surge Clamp Thermal Detection Charge Pump Internal Band Gap Reference OVLO Logic Control CTRL ACOK VIN Detection and OVP Control GND Functional Description The KTS1680A is inserted between the power supply or charger source and the load to be protected. The KTS1680A consists of a low resistance switch, under-voltage lockout protection (UVLO), over-voltage monitor and protection (OVLO) and an ̅̅̅̅̅̅̅̅̅ ACOK output flag. The KTS1680A switch device features a low on-resistance (RDSON) internal N-Channel MOSFET and protects low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the device from input surge transients up to 100V. 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. ̅̅̅̅̅̅̅̅̅) output pin can notify the system of the normal operation by pulling its output low. The power good flag (ACOK When an input power over-voltage or over-temperature occurs, the device releases the internal open-drain and the ̅̅̅̅̅̅̅̅̅ ACOK 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. October 2017 – Revision 02b Page 7 Company Confidential Advanced Information KTS1680A OVLO (Over Voltage Lockout) The KTS1680A 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 5.95V typical. If an external resistor-divider is connected to OVLO and VOVLO exceeds the OVLO select voltage, VOVLO_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: VOVLO_ EXT  VOVLO_ THRESH  (1  R1 ) R2 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 KTS1680A 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. ̅̅̅̅̅̅̅̅̅ ACOK Output The ̅̅̅̅̅̅̅̅̅ ACOK output is an active-low open-drain flag reporting good operation of the device. A pull-up resistor should be connected from the ̅̅̅̅̅̅̅̅̅ ACOK pin to the system I/O rail. A fault is flagged when the output is being pulled high in the case of an over-voltage 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 KTS1680 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 performance of the device and at an ambient temperature of 25°C I MAX  1.28W  1.82 A 0.7V 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. October 2017 – Revision 02b Page 8 Company Confidential Advanced Information KTS1680A Packaging Information WLCSP-12, 1.16mm x 1.65mm x 0.64mm Top View Side View Bottom View 0.64+/-0.043mm 1.65 +/-0.05mm 0.025+/-0.003mm 1.16+/ -0.05mm A1 Corner 2X 0.40mm Top Side Die Coating 0.20+/-0.03mm 12 X Ø 0.27+/-0.03mm 3X 0.40mm Recommended Footprint (NSMD Pad Type) 0.40mm 0.40mm 0.80mm 0.225mm Copper Pad Diameter 1.20mm WLCSP Recommended Footprint (KTS16xx) 0.325mm Solder Mask Opening * Dimensions are in millimeters. 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. October 2017 – Revision 02b Page 9 Company Confidential