EVALUATION KIT AVAILABLE MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO General Description Benefits and Features The MAX14653/MAX14654/MAX14655 overvoltage protection devices feature a low 38mΩ (typ) RON internal FET and protect low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the devices from surges up to +80V. When the input voltage exceeds the overvoltage threshold, the internal FET is turned off to prevent damage to the protected downstream components. The overvoltage protection threshold can be adjusted with optional external resistors to any voltage between 4V and 20V. With the OVLO input set below the external OVLO select voltage, the MAX14653/MAX14654/MAX14655 automatically choose the accurate internal trip thresholds. The internal overvoltage thresholds (OVLO) are preset to 15.5V typical (MAX14653), 6.8V typical (MAX14654), or 5.825V typical (MAX14655). The devices feature an opendrain ACOK output indicating a stable supply between minimum supply voltage and VOVLO. The MAX14653/ MAX14654/MAX14655 are also protected against overcurrent events by an internal thermal shutdown. The MAX14653/MAX14654/MAX14655 are offered in a small 12-bump WLP package and operate over the -40ºC to +85ºC extended temperature range. Applications ● Protect High-Power Portable Devices • Wide Operating Input Voltage Protection from +2.5V to +28V • Integrated 38mΩ (typ) n-Channel MOSFET Switch ● Flexible Overvoltage Protection Design • Adjustable Overvoltage-Protection Trip Level • Wide Adjustable OVLO Threshold Range from +4V to +20V • Preset Internal Accurate OVLO Thresholds: 15.5V ±3.3% (MAX14653) 6.8V ±2.9% (MAX14654) 5.825V ±3% (MAX14655) ● Additional Protection Features Increase System Reliability • Surge Immunity to +80V • Soft-Start to Minimize In-Rush Current • Internal 15ms Startup Debounce • Thermal-Shutdown Protection ● Minimize PCB Area • 12-Bump WLP (1.29mm x 1.83mm) Package ● -40ºC to +85ºC Operating Temperature Range Ordering Information/Selector Guide appears at end of data sheet. ● Smart Phones ● Tablet PCs ● Mobile Internet Devices For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX14653.related. Typical Application Circuit POWER ADAPTER 0.1µF R1* IN OUT IN OUT IN OUT MAX14653 MAX14654 OVLO MAX14655 R2* GND ACOK *R1 AND R2 ARE ONLY REQUIRED FOR ADJUSTABLE OVLO; OTHERWISE, CONNECT OVLO TO GND. 19-6550; Rev 0; 1/13 CHARGER 1µF VI/O PMIC APPS PROCESSOR Li-ION BATTERY MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Absolute Maximum Ratings (All voltages referenced to GND.) IN (Note 1)..............................................................-0.3V to +29V OUT............................................................... -0.3V to VIN + 0.3V OVLO.....................................................................-0.3V to +24V ACOK.......................................................................-0.3V to +6V Continuous IN, OUT Current.................................................4.5A (NOTE: Continuous current limited by thermal design) Peak IN, OUT Current (10ms)..................................................8A Continuous Power Dissipation (TA = +70ºC) WLP (derate 13.7mW/ºC above +70ºC).....................1096mW Operating Temperature Range.............................-40ºC to +85ºC Junction Temperature....................................................... +150ºC Storage Temperature Range..............................-65ºC to +150ºC Soldering Temperature (reflow)........................................ +260ºC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Thermal Characteristics (Note 2) WLP Junction-to-Ambient Thermal Resistance (θJA)...........73°C/W Note 1: Survives burst pulse up to 80V with 2Ω series resistance. Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (VIN = +2.5V to +28V, CIN = 0.1μF, TA = -40ºC to +85ºC, unless otherwise noted. Typical values are at VIN = +5.0V, IIN ≤ 3A, and TA = +25ºC.) (Note 3) PARAMETER SYMBOL Input Voltage Range VIN Input Clamp Voltage VIN_CLAMP Input Supply Current IIN OVLO Supply Current IIN_Q CONDITIONS 28 V VIN = 5V 70 120 µA VOVLO = 3V, VIN = 5V, VOUT = 0V 63 120 µA 15.5 16 (VIN falling) 15 V MAX14654 6.6 6.8 7.0 MAX14655 5.65 5.825 6.00 MAX14653 14.5 MAX14654 6.5 MAX14655 5.55 MAX14653 1.22 1.26 1.30 MAX14654 and MAX14655 1.18 1.22 1.26 Adjustable OVLO Threshold Range External OVLO Select Threshold VOVLO_SELECT Switch On-Resistance RON VIN = 5V, IOUT = 1A, TA = +25ºC OUT Load Capacitance COUT VIN = 5V OVLO Input Leakage Current IOVLO VOVLO = VOVLO_TH www.maximintegrated.com UNITS 33 VIN_OVLO VOVLO_TH MAX IIN = 10mA, TA = +25ºC (VIN rising) OVLO Set Threshold TYP 2.5 MAX14653 Internal Overvoltage Trip Level MIN V V 4 20 V 0.2 0.3 V 53 mΩ 1000 µF 100 nA 38 -100 Maxim Integrated │ 2 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Electrical Characteristics (continued) (VIN = +2.5V to +28V, CIN = 0.1μF, TA = -40ºC to +85ºC, unless otherwise noted. Typical values are at VIN = +5.0V, IIN ≤ 3A, and TA = +25ºC.) (Note 3) PARAMETER SYMBOL IN Leakage Voltage by OVLO VIN_LEAK CONDITIONS MIN TYP VOVLO = 20V, VIN = unconnected, ROVLO = 1MΩ MAX UNITS 0.5 V Thermal Shutdown 130 ºC Thermal-Shutdown Hysteresis 20 ºC DIGITAL SIGNALS (ACOK) ACOK Output Low Voltage ACOK Leakage Current VOL VI/O = 3.3V, ISINK = 1mA (See Typical Application Circuit) VACOK_LEAK VI/O = 3.3V, ACOK deasserted (See Typical Application Circuit) -1 0.4 V 1 µA TIMING CHARACTERISTICS (Figure 1) Time from 2.5V < VIN < VIN_OVLO to VOUT = 10% of VIN 15 ms tSS VOUT = 10% of VIN to soft-start off 30 ms Switch Turn-On Time tON VIN = 5V, RL = 100Ω, CLOAD = 100µF; VOUT from 10%; VIN to 90% VIN 2 ms Switch Turn-Off Time tOFF VIN > VOVLO to VOUT = 80% of VIN; RL = 100Ω, VIN rising at 2V/µs 2 µs Human Body Model All pins ±2 kV IEC 61000-4-2 Contact Discharge IN pin ±8 kV IEC 61000-4-2 Air Gap Discharge IN pin ±15 kV Debounce Time tDEB Soft-Start Time ESD PROTECTION Note 3: All specifications are 100% production tested at TA = +25ºC, unless otherwise noted. Specifications are over -40ºC to +85ºC and are guaranteed by design. www.maximintegrated.com Maxim Integrated │ 3 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO OVLO 2.5V IN 90% OUT THERMAL SHUTDOWN tON tON 90% 10% tDEB 10% tDEB tSS tOFF tDEB tOFF tDEB VOVLO_TH OVLO ACOK NOTE: WAVEFORMS ARE NOT TO SCALE Figure 1. Timing Diagram www.maximintegrated.com Maxim Integrated │ 4 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Typical Operating Characteristics (VIN = +5.0V, CIN = 0.1µF, COUT = 1µF, TA = +25ºC, unless otherwise noted.) TA = +25°C TA = -40°C 100 50 4 8 12 16 20 24 0.02 0 28 0 MAX14653 toc04 NORMALIZED TO 0.1A 2.0 1.5 1.0 4 5 6 1.10 1.2 0.1 2.3 3.4 0 7 -40 -15 10 35 60 1.10 NORMALIZED TO TA = +25°C 1.06 1.02 0.98 0.94 0.90 4.5 -40 -15 10 35 60 85 NORMALIZED EXTERNAL OVLO SET THRESHOLD vs. TEMPERATURE NORMALIZED EXTERNAL OVLO SELECT THRESHOLD vs. TEMPERATURE 1.02 0.98 0.94 -40 -15 10 35 TEMPERATURE (°C) www.maximintegrated.com 60 85 85 NORMALIZED OVLO THRESHOLD vs. TEMPERATURE TEMPERATURE (°C) NORMALIZED TO TA = +25°C MAX14653 toc03 0.5 OUTPUT CURRENT (A) 1.06 0.90 1.0 TEMPERATURE (°C) 0.5 MAX14653 toc06 NORMALIZED ON-RESISTANCE 3 NORMALIZED RON vs. OUTPUT CURRENT 2.5 0 NORMALIZED THRESHOLD 2 1.5 VOVLO (V) IN VOLTAGE (V) 3.0 1 IOUT = 1A NORMALIZED TO TA = +25°C 1.10 1.06 MAX14653 toc07 0 0.04 NORMALIZED THRESHOLD 0 0.06 NORMALIZED THRESHOLD 150 0.08 2.0 NORMALIZED RON vs. TEMPERATURE MAX14653 toc05 200 MAX14653 toc02 TA = +85°C OVLO LEAKAGE CURRENT (µA) MAX14653 250 0.10 MAX14653 toc01 IN SUPPLY CURRENT (µA) 300 OVLO LEAKAGE CURRENT vs. VOVLO NORMALIZED ON-RESISTANCE IN SUPPLY CURRENT vs. SUPPLY VOLTAGE NORMALIZED TO TA = +25°C VIN = +16V, MAX14653 1.02 0.98 0.94 0.90 -40 -15 10 35 60 85 TEMPERATURE (°C) Maxim Integrated │ 5 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Typical Operating Characteristics (continued) (VIN = +5.0V, CIN = 0.1µF, COUT = 1µF, TA = +25ºC, unless otherwise noted.) NORMALIZED DEBOUNCE TIME 1.8 POWER-UP RESPONSE (CL = 100µF) MAX14653 toc09 MAX14653 toc08 2.0 NORMALIZED DEBOUNCE TIME vs. TEMPERATURE NORMALIZED TO TA = +25°C 1.6 VIN 5V/div 1.4 1.2 VOUT 5V/div 1.0 0.8 0.6 IOUT 100mA/div 0.4 0.2 0 -40 -15 10 35 60 85 4ms/div TEMPERATURE (°C) OVERVOLTAGE FAULT RESPONSE POWER-UP RESPONSE (CL = 1000µF) MAX14653 toc11 MAX14653 toc10 VIN 5V/div VIN 10V/div VOUT 5V/div VOUT 10V/div IOUT 100mA/div 4ms/div IOUT 500mA/div 40ms/div 80V SURGE TEST WAVEFORM (WITHOUT MAX14653) 80V SURGE TEST WAVEFORM (WITH MAX14653) MAX14653 toc12 MAX14653 toc13 VIN 20V/div 20V/div 10µs/div www.maximintegrated.com 10µs/div Maxim Integrated │ 6 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Pin Configuration MAX14653 MAX14654 MAX14655 TOP VIEW (BUMPS ON BOTTOM) 2 3 4 + GND 1 OUT OUT GND ACOK OUT IN GND OVLO IN IN GND A B C WLP (1.3mm x 1.86mm) Pin Description PIN NAME A1, A4, B4, C4 GND Ground. Connect GND pins together for proper operation. A2, A3, B2, OUT Output Voltage. Output of internal switch. Connect OUT pins together for proper operation. B1 ACOK B3, C2, C3 IN C1 OVLO www.maximintegrated.com FUNCTION Open-Drain Flag Output. ACOK is driven low after input voltage is stable between minimum VIN and VOVLO after debounce. Connect a pullup resistor from ACOK to the logic I/O voltage of the host system. ACOK is high impedance after thermal shutdown. Voltage Input. Bypass IN with a 0.1µF ceramic capacitor as close as possible to the device. Connect IN pins together for proper operation. External OVLO Adjustment. Connect OVLO to GND when using the internal threshold. Connect a resistor-divider to OVLO to set a different OVLO threshold; this external resistor-divider is completely independent of the internal threshold. Maxim Integrated │ 7 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Functional Diagram IN IN OUT OUT MAX14653 MAX14654 MAX14655 IN OUT CHARGE PUMP TEMPERATURE FAULTS VBG REFERENCE OVLO LOGIC CONTROL ACOK SEL GND Detailed Description The MAX14653/MAX14654/MAX14655 overvoltage protection devices feature a low on-resistance (RON) internal FET and protect low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the devices from surges up to +80V. If the input voltage exceeds the overvoltage threshold, the internal FET is turned off to prevent damage to the protected components. The 15ms debounce time built into the device prevents false turn on of the internal FET during startup. Device Operation The devices contain timing logic that controls the turn-on of the internal FET. The internal charge pump is enabled when VIN < VIN_OVLO if internal trip thresholds are used or when VIN < VOVLO_TH if external trip thresholds are used. The charge-pump startup, which occurs after a 15ms debounce delay, turns the internal FET on (see the Functional Diagram). After the debounce time, soft-start limits the FET inrush current for 30ms (typ). At any time, if VIN rises above VOVLO_THRESH, OUT is disconnected from IN. www.maximintegrated.com Internal Switch The MAX14653/MAX14654/MAX14655 incorporate an internal FET with a 38mΩ (typ) RON. The FET is internally driven by a charge pump that generates a necessary gate voltage above IN. Overvoltage Lockout (OVLO) The MAX14653 has a 15.5V (typ) overvoltage threshold (OVLO). The MAX14654 and MAX14655 have 6.8V and 5.825V (typ) OVLO thresholds, respectively. Thermal-Shutdown Protection The MAX14653/MAX14654/MAX14655 feature thermal shutdown circuitry. The internal FET turns off when the junction temperature exceeds +130ºC (typ). The device exits thermal shutdown after the junction temperature cools by 20ºC (typ). ACOK Output An open-drain ACOK output gives the MAX14653/ MAX14654 /MAX14655 the ability to communicate a stable power source to the host system. ACOK is driven low after input voltage is stable between minimum VIN and VOVLO after debounce. Connect a pullup resistor from ACOK to the logic I/O voltage of the host system. ACOK is high impedance after thermal shutdown. Maxim Integrated │ 8 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Applications Information OUT Output Capacitor IN Bypass Capacitor For most applications, bypass IN to GND with a 0.1µF ceramic capacitor as close as possible to the device. If the power source has significant inductance due to long lead length, the device clamps the overshoot due to LC tank circuit. RC 1MΩ CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 100pF RD 1.5kΩ DISCHARGE RESISTANCE DEVICE UNDER TEST STORAGE CAPACITOR The slow turn-on time provides a soft-start function that allows the MAX14653/MAX14654/MAX14655 to charge an output capacitor up to 1000µF without turning off due to an overcurrent condition. External OVLO Adjustment Functionality If OVLO is connected to ground, the internal OVLO comparator uses the internally set OVLO value. 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. R1 = 1MΩ is a good starting value for minimum current consumption. Since VIN_OVLO, VOVLO_THRESH, and R1 are known, R2 can be calculated from the following formula: R VIN_OVLO = VOVLO_TH × 1 + 1 R2 This external resistor-divider is completely independent from the internal resistor-divider. ESD Test Conditions Figure 2a. Human Body ESD Test Model IP 100% 90% IR PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) AMPERES 36.8% 10% 0 0 tRL TIME tDL ESD performance depends on a number of conditions. The MAX14653–MAX14655 are specified for ±2kV HBM typical ESD on all pins, Contact and Air-Gap Discharge on pin IN. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. HBM ESD Protection Figure 2a shows the Human Body Model, and Figure 2b shows the current waveform it generates when discharged into low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the device through a 1.5kΩ resistor. CURRENT WAVEFORM Figure 2b. Human Body Current Waveform www.maximintegrated.com Maxim Integrated │ 9 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Ordering Information/Selector Guide PART PINPACKAGE TOP MARK OVLO (V) MAX14653EWC+T* 12 WLP ACS 15.5 MAX14654EWC+T 12 WLP ACT 6.8 MAX14655EWC+T* 12 WLP ACU 5.825 Note: All devices are specified over the -40ºC to +85ºC temperature range. +Denotes lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 12 WLP W121G1+1 21-0542 Refer to Application Note 1891 *Future product—contact factory for availability. Chip Information PROCESS: BiCMOS www.maximintegrated.com Maxim Integrated │ 10 MAX14653/MAX14654/ MAX14655 High-Current Overvoltage Protector with Adjustable OVLO Revision History REVISION NUMBER REVISION DATE 0 1/13 DESCRIPTION Initial release PAGES CHANGED — For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 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