EVALUATION KIT AVAILABLE MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/Electronic Circuit Breaker General Description The MAX15096 family of devices are integrated solutions for hot-swap applications requiring the safe insertion and removal of circuit line cards from a live backplane. They can also be used as electronics circuit breaker for hard drive and solid-state drive and fans. The devices integrate a hot-swap controller, 12m (typ) power MOSFET, and an electronic circuit-breaker protection in a single package. The devices are designed for protection of 2.7V to 18V supply voltages. These devices implement a foldback current limit during startup to control inrush current, lowering di/dt and keeping the MOSFET operating under safe operating area (SOA) conditions. After the startup cycle is complete, on-chip comparators provide VariableSpeed/BiLevelTM protection against short-circuit and overcurrent faults, and immunity against system noise and load transients. The load is disconnected in the event of a fault condition. The devices are factory calibrated to deliver accurate overcurrent protection with 10% accuracy. During a fault condition, PG goes low and the devices latch off (MAX15096) or automatic retry (MAX15096A); the output could also be discharged after a fault event (MAX15096D). The devices feature an IN-to-OUT short-circuit detection before startup. The devices provide a power-MOSFET GATE pin to program the slew rate during startup by adding an external capacitor. The devices have an undervoltage/overvoltage input pin (UVOV) that can detect an undervoltage/overvoltage fault and disconnect the IN from the OUT. Additional features include internal overtemperature protection and a power-good output (PG). The devices are available in a 16-bump, 2mm x 2mm wafer-level package (WLP) and are rated over the -40C to +105C extended temperature range. Benefits and Features Integration Reduces Solution size for Blade Servers and Other Space-Constrained Designs * Integrated 12m (typ) Internal Power MOSFET * Programmable Overvoltage Protection and Undervoltage-Lockout Threshold * Drive-Present Signal Input (PRSNT pin) * Thermal Protection Flexibility Enables Use in Many Unique Designs * 2.7V to 18V Operating Voltage Range * Programmable Inrush Current Control Under SOA Operation * Adjustable Circuit-Breaker Current/Current-Limit Threshold * Programmable Slew-Rate Control * Variable-Speed Circuit-Breaker Response * Latchoff (MAX15096) or Automatic Retry (MAX15096A) Options Safety Features Ensure Accurate, Robust Protection * 6A (max) Load Current Capability * 10% Circuit-Breaker Threshold Accuracy * IN-to-OUT Short-Circuit Detection * Open-Drain PG Output * Output Discharge After a Fault Event (MAX15096D Only) * Programmable Additional Delay (2s max) to Fast-Comparator Response Time * Enable Input (EN) Applications Blade Servers Server I/O Cards RAID Systems Disk Drive Power Storage Applications Industrial Applications Ordering Information appears at end of data sheet. VariableSpeed/BiLevel is a trademark of Maxim Integrated Products, Inc. 19-7304; Rev 4; 2/17 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Absolute Maximum Ratings VCC to GND.............................................................-0.3V to 20V IN to GND...............................................................-0.3V to +20V PG, PRSNT to GND...............................................-0.3V to +20V OUT to GND................................................-0.3V to (VIN + 0.3V) GATE to OUT...........................................................-0.3V to +6V EN, UVOV to GND...................................................-0.3V to +6V TIMER, CB to GND.................................-0.3V to (VREG + 0.3V) REG to GND.............................-0.3V to min (+6V, (VCC + 0.3V)) Continuous Power Dissipation (TA = +70C) 16-bump WLP (derate 20.4mW/C above +70C).....1633mW Operating Temperature Range.......................... -40C to +105C Junction Temperature...................................................... +150C Storage Temperature Range............................. -60C to +150C Lead Temperature (soldering, 10s)................................. +300C Soldering Temperature (reflow)....................................... +260C 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 1) Junction-to-Ambient Thermal Resistance (JA)....................49C/W Note 1: 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 = VCC = 2.7V to 18V, TA = TJ = -40C to +105C, unless otherwise noted. Typical values are at VIN = 12V, RCB = 10.5k, and TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLIES VCC Operating Range VCC 2.7 18 V IN Operating Range VIN 2.7 18 V VCC Supply Current ICC 0.9 mA IN Supply Current IIN VCC Default Undervoltage Lockout VUVLO VCC Default Undervoltage-Lockout Hysteresis VUVLO_HYS VIN = VCC = 2.7V to 18V, enable 0.58 VIN = VCC = 2.7V to 18V, disable 0.590 3.3 3.8 RCB = 10.42k, no load 1.3 1.8 2.5 2.65 VCC rising VREG UV Turn-On Threshold VUV_TH VUVOV rising UV Turn-On Threshold Hysteresis VUV_HYS VUVOV falling OV Turn-On Threshold VOV_TH VUVOV rising VOV_HYS VUVOV falling OVUV Input Leakage Current ILEAK 2.35 0.1 REG Regulator Voltage OV Turn-On Threshold Hysteresis A RCB = 41.67k, no load No load, VCC > 4V V V 3 3.3 3.6 V 0.536 0.55 0.564 V 1.199 1.23 50 mV 1.261 50 VUVOV = VEN = 0 to 5.5V mA -1 V mV +1 A CURRENT LIMIT Circuit-Breaker Accuracy (Note 3) Circuit-Breaker Accuracy Deviation (Note 4) www.maximintegrated.com ICB_TH VIN = 12V RCB = 41.2k 5.4 6 6.6 RCB = 10.5k 1.14 1.27 1.40 RCB = 10.5k to 21.5k, compared to nominal current-limit value, VIN = VCC = 8V to 15V -10 RCB = 21.5k to 41.2k, compared to nominal current-limit value -10 A +10 % +10 Maxim Integrated 2 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Electrical Characteristics (continued) (VIN = VCC = 2.7V to 18V, TA = TJ = -40C to +105C, unless otherwise noted. Typical values are at VIN = 12V, RCB = 10.5k, and TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.6% overcurrent 2.7 30% overcurrent 200 s In power-on mode 12 A 0.5 x ICB_TH A IFC_TH 1.5 x ICB_TH A Fast-Comparator Response Time tFCD 200 ns Additional Delay Time by TIMER tAFCD RTIMER = open 2 s Minimum CB Voltage Reference During Foldback (Note 6) VTHCB_MIN VIN - VOUT > 10V, RCB = 41.2k 60 mV Maximum CB Voltage Reference During Foldback (Note 6) VTHCB_MAX VIN - VOUT < 2V, RCB = 41.2k 250 mV Slow-Comparator Response Time (Note 5) CB Source Current Maximum Current Limit During Startup Fast-Comparator Threshold tSCD ITHCB_NORM ILIM (see Figure 2) ms TIMING Startup Maximum Time Duration Autoretry Delay Time Output Short Detection at Startup tSU tRESTART 43 MAX15096A/MAX15096D only tSHORT 52 61 3.4 10.4 ms s 13.2 15.6 12 18 ms MOSFET Total On-Resistance RON GATE Charge Current IGATE TA = +25C TA = -40C to +105C 25 4.8 5.9 m 7.1 A OUTPUTS PG Output Low Voltage VOL Low-impedance state, IPG = +5mA 0.4 V PG Output High-Leakage Current IOH High-impedance state, VPG = 16V 1 A DISCHARGE Discharge Current After PG Deasserted IDISCHARGE VOUT < 7.1V (MAX15096D only) 50 100 160 mA 710mW/ VOUT VOUT 7.1V to 18V (MAX15096D only) PG THRESHOLD PG Threshold VPG VIN = 12V PG Assertion Delay tPG From VOUT > VPG and VGATE - VOUT > 3V OUT-to-IN Short-Circuit Detection Threshold OUT Preload Threshold www.maximintegrated.com 0.9 x VIN 12 16 V 20 ms VIOSHT Measured at VOUT 0.9 x VIN V VPL Measured at VOUT 0.5 x VIN V Maxim Integrated 3 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Electrical Characteristics (continued) (VIN = VCC = 2.7V to 18V, TA = TJ = -40C to +105C, unless otherwise noted. Typical values are at VIN = 12V, RCB = 10.5k, and TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 1 1.05 UNITS INPUTS Input Logic Threshold EN VEN_TH Rising Threshold Hysteresis EN VEN_TH_HYS Falling VPRSNT_TH Falling Input Logic Threshold PRSNT Threshold Hysteresis PRSNT EN Bias Current PRSNT Input Bias Current EN Deglitch Time PRSNT High-to-Low Deglitch Time VPRSNT_TH_HYS Rising IEN_BIAS IPRSNT_BIAS 0.95 50 0.92 0.97 V mV 1.02 50 V mV VEN = 0 or 5.5V 1 A VPRSNT = 0 or 18V 1 A tEN_DEG 100 s tPRSNT_DEG 400 s TJ rising 150 C TJ falling 20 C THERMAL SHUTDOWN Thermal Shutdown Thermal Shutdown Hysteresis TSD Note 2: All devices are 100% production tested at TA = +25C. Limits over temperature are guaranteed by design. Note 3: 41.2k is the maximum allowed external resistance value to be connected at the CB pin to GND for safe operation. All devices are tested with 10.5k, the parameter specified at RCB = 41.2k is guaranteed by bench characterization and correlation, with respect to the tested parameter at RCB = 10.5k. The formula that describes the relationship between RCB and the circuit-breaker current threshold is: ICB = RCB/6510)(/A) - 0.34A. Note 4: Guaranteed by design and not production tested. Note 5: The current-limit slow-comparator response time is weighed against the amount of overcurrent so the higher the overcurrent condition, the faster the response time. Note 6: Foldback is active during the startup phase so the internal power MOSFET operates within SOA. www.maximintegrated.com Maxim Integrated 4 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Typical Operating Characteristics (VIN = VCC = 2.7V to 18V, TA = TJ = -40C to +85C, unless otherwise noted. Typical values are at VIN = 12V, RCB = 10.5k, and TA = +25C.) SUPPLY CURRENT(mA) 4.5 RCB = 41.2k VIN = VCC= 12V IIN 4.0 CIRCUIT BREAKER THRESHOLD (A) 5.0 toc01 3.5 3.0 2.5 2.0 1.5 ICC 1.0 0.5 0.0 -40 -25 -10 5 20 35 50 65 80 95 110 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 TEMPERATURE (C) 18 ON-RESISTANCE(m) 16 ON-RESISTANCE vs. TEMPERATURE CIRCUIT BREAKER THRESHOLD vs. CIRCUIT BREAKER REISISTANCE toc02 8 VIN = VCC = 12V 7 CIRCUIT BREAKER THRESHOLD(A) SUPPLY CURRENT vs. TEMPERATURE 10 6 5 toc03 RCB = 41.2k RCB = 30k 4 RCB = 20k 3 RCB = 10.5k 2 1 0 15 20 25 30 35 40 CIRCUIT BREAKER RESISTANCE (k) CIRCUIT BREAKER THRESHOD vs. TEMPERATURE -40 -25 -10 5 20 35 50 65 80 95 110 TEMPERATURE (C) UV TURN-ON WAVEFORMS toc04 VIN = 12V, ILOAD = 0.5A toc05 CGATE = 5.6nF 500mV/ div VUV 5V/div 14 VOUT 12 10 8 1V/div VPG 2A/div ILOAD -40 -25 -10 5 20 35 50 65 80 95 110 10ms/div TEMPERATURE (C) FAULT-SHUTDOWN WAVEFORMS OVERLOAD (SLOW TRIP) toc07 UV TURN-OFF WAVEFORMS toc06 CGATE = 5.6nF VUV 500mV/ div 10V/div VOUT 1V/div VPG 2A/div ILOAD 10ms/div www.maximintegrated.com 10V/div VOUT ILOAD 5A/div VPG 10V/div 10V/div VGATE 1ms/div Maxim Integrated 5 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Typical Operating Characteristics (continued) (VIN = VCC = 2.7V to 18V, TA = TJ = -40C to +85C, unless otherwise noted. Typical values are at VIN = 12V, RCB = 10.5k, and TA = +25C.) FAULT-SHUTDOWN WAVEFORMS OVERLOAD (SHORT CIRCUIT) 10V/div VOUT 10A/div ILOAD 10V/div VPG 20V/div VGATE UV RISING\FALLING THRESHOLD VOLTAGE vs. TEMPERATURE PG ASSERTION DELAY toc09 0.56 UV RISING/FALLING THRESHOLD VOLTAGE(V) toc08 VIN = 12V, 0.55 0.54 VUV RISING VUV VUV FALLING VOUT 500mV/ div 0.53 5V/div 0.52 0.51 0.5 400s/div 500mV/ div VPG -40 -25 -10 5 20 35 50 65 80 95 110 10ms/div TEMPERATURE (C) CLOAD = 620nF VIN 10V/div VOUT 5V/div VGATE 10V/div ILOAD 5A/div 1s/div 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 CIRCUIT BREAKER THRESHOLD TIME vs. OVERCURRENT toc12 3 VIN = VCC = 12V FAST COMPARATOR DELAY(s) toc11 CIRCUIT BREAKER THRESHOLD TIME (ms) AUTORETRY FUNCTIONALITY toc10 CGATE = 5.6nF 0 5 10 15 20 25 toc13 RTIMER = OPEN 2.5 2 RTIMER = 44k RTIMER = 22k 1.5 1 RTIMER = 10.9k RTIMER =0 0.5 0 30 FAST COMPARATOR DELAY vs. TEMPERATURE -40 -25 -10 5 20 35 50 65 80 95 110 TEMPERATURE( OC) OVERCURRENT(%) OUTPUT DISCHARGE BEHAVIOR toc14 VOUT MAX15096D ONLY COUT = 1060F 2V/div VIN 10V/div VPG 10V/div VGATE 5V/div 2ms/div www.maximintegrated.com Maxim Integrated 6 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Bump Configuration MAX15096 MAX15096A MAX15096D TOP VIEW (BUMP SIDE DOWN) + 1 2 3 4 VCC PG TIMER UVOV CB IN IN IN GND OUT OUT OUT REG GATE EN PRSNT A B C D WLP (2mm x 2mm) Bump Description BUMP NAME FUNCTION A1 VCC A2 PG A3 TIMER Timing Input. Connect a resistor from TIMER to GND to program the maximum time the part is allowed to remain in current limit. See the TIMER section. If TIMER is not connected, the parasitic capacitance between TIMER and GND must be less than 10pF. A4 UVOV Undervoltage and Overvoltage Threshold Pin. UVOV sets the under/overvoltage threshold. See the Setting the Undervoltage/Overvoltage Threshold section. B1 CB Current-Limit Threshold Set. Connect a resistor from CB to GND to set the circuit-breaker threshold. Maximum value of 41.2k can be accepted for safe operation. Having the CB pin connected to GND sets the circuitbreaker threshold at 0A. B2-B4 IN Supply Voltage Input. IN is connected to the drain of the internal 12m (typ) MOSFET. Bypass IN with a transient voltage-suppressor diode to GND for clamping inductive kick transients in the case of fast output short circuit to GND. Power-Supply Input. Connect VCC to a voltage between 2.7V and 18V. Connect a Schottky diode (or 10 resistor) from IN to VCC, and a 1F bypass capacitor to GND to guarantee full operation in the event VIN collapses during a strong short from OUT to GND. Power-Good Output. PG is an open-drain output. Connect to an external pullup resistor to make it an active-high output. PG pulls low until the internal power MOSFET is fully enhanced. C1 GND Ground C2-C4 OUT Load Output. Source of the internal power MOSFET. D1 REG Internal Regulator Output. Bypass to ground with a 1F capacitor. Do not power external circuitry using the REG output. D2 GATE Gate of Internal MOSFET. During startup, a 5.9A (typ) current is sourced to enhance the internal MOSFET with a 10V/ms slew rate. Connect an external capacitance from GATE to GND to reduce the output slew rate during startup. D3 EN Active-High Enable Comparator Input. Pulling EN high enables the output if PRSNT is held low. D4 PRSNT Active-Low Present-Detect Logic Input. Pulling PRSNT to GND enables the output if EN is high. www.maximintegrated.com Maxim Integrated 7 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Block Diagram ILOAD MPOW IN VCC CHARGE PUMP OUT 100mA IREF MS1 (MAX15096D ONLY) IGATE MAX15096 MAX15096A MAX15096D GATE CB_SLOW_COMP TEMP SENSE CONTROL LOGIC IPD 2x ISLEW REF1 UVOV FAST_COMP STARTUP CONTROL REF2 GATE GATE_OK EN PG VCC LDO REGULATOR PRSNT REFERENCE 1.25V GENERATOR 0.9 x VIN 12A CB 1V TIMER www.maximintegrated.com REG GND Maxim Integrated 8 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Timing Diagram IN VTH_OV VTH_UV UVOV VTH_REG REG PRSNT# EN 3V GATE-OUT 0.9 x VIN OUT PG DISCHARGING (MAX15096D) IDISCHARGE SYSTEM IDLE TIME 100s DEBOUNCING TIME t1 t0 t2 t3 t4 100s FILTER TIME Table 1. Timing TIMING PARAMETER MIN TYP MAX UNITS t0 -- 400 -- s t1 -- 100 -- s t2 12 16 20 ms t3 -- 100 -- s t4 -- 0.5 -- s www.maximintegrated.com Maxim Integrated 9 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Detailed Description Enable Logic and Undervoltage/ Overvoltage-Lockout Threshold The supply output can become active only after all the following events have occurred: IN is within the UVOV window VCC is above its UVLO threshold EN meets its enable threshold for more than 100s PRSNT is low for more than 400s The MAX15096 family of devices enables the outputs as shown in Table 1. The devices are ready to drive the output when the VCC supply rises above the VUVLO threshold. The devices turn on the output when VCC > VUVLO, VUVOV is higher than 0.55V (VUV_TH) and less than 1.23V (VOV_TH). The devices turn off the output when VUVOV falls below (0.55V - VUV_HYS) or VUVOV rises above 1.23V. An external resistive divider from IN to UVOV and ground provide the flexibility to select the undervoltage/ overvoltage-lockout threshold to the desired value. See Figure 1 and the Setting the Undervoltage/Overvoltage Threshold section in the Applications Information section. Startup Once the devices' output is enabled, the device provides controlled application of power to the load. The voltage at OUT begins to rise at approximately 10V/ms default until the programmed circuit-breaker current level is reached, while the devices actively limit the inrush current at the circuit-breaker setting.An external capacitance connected to the GATE pin allows the user to program the slew rate to a value lower than the default. The inrush current can be programmed by appropriate selection of RCB. During startup, a foldback current limit is active to protect the internal MOSFET to operate within safe operating area. (Figure 2). Table 2. Output Enable Truth Table POWER SUPPLY PRECISION ANALOG INPUT OUT VCC UVLO UVP OVP VCC > VUVLO VUVOV > VUV_TH VUVOV < VOV_TH On VCC < VUVLO X X Off X VUVOV < (VUV_TH - VUV_HYS) X Off X X VUVOV > VOV_TH Off X = Don't care. VUV_TH = 0.55V (typ). VOV_TH = 1.23V (typ). MAX15096 MAX15096A MAX15096D IN R1 UVOV IINRUSH 3A RCB = 41.2k REF1 CONTROL LOGIC R2 RCB = 10.5k 0.64A GND REF2 0.5A 0.1A 2V Figure 1. Undervoltage/Overvoltage Threshold Setting www.maximintegrated.com 10V VIN - VOUT Figure 2. Startup Inrush Current Foldback Characteristics Maxim Integrated 10 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker An internal 52ms (typ) timer starts counting when the device enters startup phase. The devices complete startup phase and enter normal operation mode if the voltage at OUT rises above the preload threshold (0.9 x VIN) and (VGATE - VOUT) > 3V. An open-drain power-good output (PG) goes high impedance 16ms after the startup successfully completes. The thermal-protection circuit is always active and the internal MOSFET is immediately turned off so thermal-shutdown threshold condition can be reached. If the startup is not successful because the output is shorted or the load is too high (OUT voltage < 1V), the devices turn off the hot-swap switch after the output short detection at startup tSHORT (13.2ms) elapses. VariableSpeed/BiLevel-Fault Protection VariableSpeed/BiLevel-fault protection incorporates comparators with different thresholds and response times to monitor the load current (Figure 3). Protection is provided in normal operation (after the startup period has expired) by discharging the MOSFET gate in response to a fault condition. During a fault condition, the MAX15096A enters an autoretry mode while the MAX15096 latches off (see the Autoretry and Latchoff Fault Management section). Enable Input (EN) The devices allow for enabling the MOSFET in an activehigh configuration. When all other enabling conditions are verified and the EN pin is at a logic-high level, the MOSFET is enabled. Similarly, when the EN pin is at a logic-low level, the MOSFET is disabled. Charge Pump An integrated charge pump provides the gate-drive voltage for the internal power MOSFET. The charge pump generates the proper gate-drive voltage above VIN to fully enhance the internal power MOSFET and guarantee low RON operation during normal state condition. During startup, the internal charge pump drives the GATE of the MOSFET with a 5.9A current to enhance the internal MOSFET with 10V/ms slew rate. Connect an external capacitor (CGATE) from GATE to GND to reduce the output slew rate during startup. CGATE can be calculated according to the formula below: CGATE = (IGATE x t)/VGATE where IGATE is 5.9A (typ), t is the desired slew rate time, and the 5V of VGATE is the voltage at the gate of the internal MOSFET at turn-on. SLOW COMPARATOR TURN-OFF TIME 2.7ms FAST COMPARATOR 200ns 30% OVERCURRENT 0.6% OVERCURRENT 50% OVERCURRENT OUT CURRENT Figure 3. VariableSpeed/BiLevel Response www.maximintegrated.com Maxim Integrated 11 MAX15096/MAX15096A Circuit-Breaker Comparator and Current Limit The current through the internal power MOSFET is compared to a circuit-breaker threshold. An external resistor between CB and ground sets this threshold according to the following formula: ICB = (RCB/6501)(A/) - 0.34A where ICB is in amps and RCB (the resistor between CB and ground) is in ohms. The circuit-breaker comparator is designed so that the load current can exceed the threshold for some amount of time before tripping. The time delay varies inversely with the overdrive above the threshold. The greater the overcurrent condition, the faster the response time, allowing the devices to tolerate load transients and noise near the circuit-breaker threshold. The maximum allowed external resistor value is 41.2k, which corresponds to a 6A CB threshold setting. Programming the CB threshold to a value higher than 6A could cause unsafe operating conditions, resulting in damage to the device. The devices also feature catastrophic short-circuit protection. During normal operation, if OUT is shorted directly to ground, a fast protection circuit forces the gate of the internal MOSFET to discharge quickly and disconnect the output from the input. Autoretry and Latchoff Fault Management During a fault condition, the devices turn off the internal MOSFET, disconnecting the output from the input. The MAX15096A enters an autoretry mode and restarts after tRESTART (3.4s typ.) time delay elapses. The MAX15096 latches off and remains off until the enable logic is cycled off and on after a certain delay. The delay prevents the latchoff device to restart and operate with unsafe power-dissipation duty cycle. See the Timing diagram and Table 1 for delay values. Latchoff Reset The latchoff could be reset if any one of the following happens: VCC is below its UVLO threshold EN is disabled for longer than 100s UV is triggered www.maximintegrated.com 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker PRSNT goes above its threshold OV is triggered Power-Good (PG) Delay The devices feature an open-drain, power-good output that asserts after tPG delay, indicating that OUT voltage has reached (0.9 x VIN) voltage and (VGATE - VOUT) > 3V. REG The devices include a linear regulator that outputs 3.3V at REG. REG provides power to the internal circuit blocks of the devices and must not be loaded externally (except a resistor > 50k connected from REG to EN). REG requires a 1F capacitor to ground for proper operation. Output Discharging The discharge FET is active when the output is disabled or under fault event. In this event, the hot-swap is off and the output is on the way down. The discharging is triggered after the main FET has completely turned off. The maximum output capacitance is approximately 1000F. The voltage could be up to 18V. Ideally, it discharges the output capacitor in constant power mode (710mW typ) to ensure the voltage rail is below 0.3V within 2s or less time. TIMER Connect a resistor from the TIMER pin to the GND pin to program the fast-trip response time. This time is the sum of the internal fast-comparator propagation delay (less than 200ns typ) plus an additional delay set by the external resistor connected from TIMER to ground. Choosing different resistance values, it is possible to change the value of additional delay. If the TIMER pin is connected to REG, the total response time is less than 200ns (typ). Additional delay is disabled also during the startup phase or after a short-circuit event (VOUT < 90% VIN). Be careful about additional delay settings related to a short event. Additional delay can be calculated using the following formula: Additional_Delay (s) = RTIMER (k) x 22.9E-03 Maximum additional delay time is set to 2s. Table 3 provides additional delay settings. Maxim Integrated 12 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Table 3. Additional Delay Settings OPTION RTIMER (k) RESPONSE TIME (s) 1 Open 2 2 86.6 2 3 43.2 1 4 21.5 0.5 5 11 0.25 6 0 0.050 Table 4. Setting the Undervoltage/Overvoltage Thresholds OPTION R1 TABLE (k) R2 = 10k OVP UVP 1 133 17.6 7.9 2 127 16.9 7.5 3 118 15.7 7.0 4 115 15.4 6.9 5 113 15.1 6.8 6 107 14.4 6.4 7 102 13.8 6.2 8 49.9 7.4 3.3 9 46.4 6.9 3.1 10 43.2 6.5 2.9 11 39.2 6.1 2.7 12 33.2 5.3 2.4 Thermal Protection The devices enter a thermal shutdown mode in the event of overheating caused by excessive power dissipation or high ambient temperature. When the junction temperature exceeds TJ = +150C (typ), the internal thermal protection circuitry turns off the internal power MOSFET. The devices recover from thermal shutdown mode once the junction temperature drops by 20C (typ). IN-to-OUT Short-Circuit Protection At startup, after all the input conditions are satisfied (UV, OV, VUVLO), the devices immediately check for IN-toOUT short-circuit faults. If VOUT is greater than 90% of www.maximintegrated.com VIN, the internal MOSFET cannot be turned on, then the MAX15096A autoretries in tRESTART (3.4s typ), while the MAX15096 latches off. If VOUT is in the range from 50% to 90% of VIN, then the internal MOSFET still cannot be turned on after tSU time elapses. The MAX15096A autoretries in tRESTART, while the MAX15096 latches off. Applications Information Setting the Undervoltage/Overvoltage Threshold See Table 4 for options. Maxim Integrated 13 MAX15096/MAX15096A 2.7V to 18V, 6A Integrated Hot-Swap/ Electronic Circuit Breaker Typical Application Circuit REMOVABLE CARD 12V IN RIN OUT *TVS PRSNT VCC R1 CIN MAX15096 MAX15096A MAX15096D RPG CB RCB CREG SYSTEM ENABLE INPUT COUT 12V UVOV R2 22F VPRSNT 12V PG GATE REG CSR TIMER EN GND RTIMER *HIGHLY RECOMMENDED Wafer-Level Packaging (WLP) Applications Information For the latest application details on WLP construction, dimensions, tape carrier information, printed-circuit board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, refer to Application Note 1891: Wafer-Level Packaging (WLP) and Its Applications--available on Maxim's website at www.maximintegrated.com/wlp. Ordering Information PART TEMP RANGE (C) PIN-PACKAGE FAULT MANAGEMENT MAX15096GWE+ -40 to +105 16 WLP Latchoff MAX15096AGWE+ -40 to +105 16 WLP Autoretry MAX15096DGWE+ -40 to +105 16 WLP Autoretry +Denotes a lead (Pb)-free/RoHS-compliant package. Chip Information PROCESS: BiCMOS www.maximintegrated.com 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. 16 WLP W162J2Z+1 21-0200 Refer to Application Note 1891 Maxim Integrated 14 MAX15096/MAX15096A 2.7V to 18V, 6Am Integrated Hot-Swap/ Electronic Circuit Breaker Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 3/14 Initial release 1 8/14 Replaced TOCs 1, 3, 4, 9, and 13 2 1/15 Updated Benefits and Features section 3 5/16 Removed future part information; updated Header, General Description and Benefits and Features sections, and Pin Description table 4 2/17 Updated Typical Application Circuit diagram DESCRIPTION -- 5, 6 1 1-15 14 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. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. (c) 2017 Maxim Integrated Products, Inc. 15 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated: MAX15096GWE+ MAX15096AGWE+ MAX15096GWE+T