MAX5924BEUB+TG24

EVALUATION KIT AVAILABLE MAX5924/MAX5925/ MAX5926 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor General Description The MAX5924/MAX5925/MAX5926 1V to 13.2V hot-swap controllers allow the safe insertion and removal of circuit cards into live backplanes. These devices hot swap supplies ranging from 1V to 13.2V provided that the device supply voltage, VCC, is at or above 2.25V and the hot-swapped supply, VS, does not exceed VCC. The MAX5924/MAX5925/MAX5926 hot-swap controllers limit the inrush current to the load and provide a circuitbreaker function for overcurrent protection. The devices operate with or without a sense resistor. When operating without a sense resistor, load-probing circuitry ensures a short circuit is not present during startup, then gradually turns on the external MOSFET. After the load probing is complete, on-chip comparators provide overcurrent protection by monitoring the voltage drop across the external MOSFET on-resistance. In the event of a fault condition, the load is disconnected. The devices include many integrated features that reduce component count and design time, including configurable turn-on voltage, slew rate, and circuit-breaker threshold. An on-board charge pump provides the gate drive for a lowcost, external nMOSFET. The MAX5924/MAX5925/MAX5926 are available with open-drain PGOOD and/or PGOOD outputs. The MAX5925/MAX5926 also feature a circuit breaker with temperature-compensated RDS(ON) sensing. The MAX5926 features a selectable 0ppm/°C or 3300ppm/°C temperature coefficient. The MAX5924 temperature coefficient is 0ppm/°C and the MAX5925 temperature coefficient is 3300ppm/°C. Autoretry and latched faultmanagement configurations are available (see the Selector Guide). Applications ●● ●● ●● ●● ●● ●● Base Stations RAID Remote-Access Servers Network Routers and Switches Servers Portable Device Bays μMAX is a registered trademark of Maxim Integrated Products, Inc. Selector Guide and Ordering Information appears at end of data sheet. 19-3443; Rev 4; 1/16 Benefits and Features ●● Hot Swap 1V to 13.2V with VCC ≥ 2.25V ●● Drive High-Side nMOSFET ●● Operation With or Without RSENSE ●● Temperature-Compensated RDS(ON) Sensing ●● Protected During Turn-On into Shorted Load ●● Adjustable Circuit-Breaker Threshold ●● Programmable Slew-Rate Control ●● Programmable Turn-On Voltage ●● Autoretry or Latched Fault Management ●● 10-Pin μMAX® or 16-Pin QSOP Packages Typical Operating Circuits TYPICAL OPERATION WITHOUT RSENSE BACKPLANE VS VCC REMOVABLE CARD N 1V TO VCC RCB RSC CB VCC GND VOUT 2.25V TO 13.2V GATE SENSE OUT MAX5925 MAX5926 SC_DET GND SEE FIGURE 1 FOR A DETAILED TYPICAL OPERATING CIRCUIT WITHOUT RSENSE. BACKPLANE VS VCC TYPICAL OPERATION WITH RSENSE REMOVABLE CARD RSENSE 1V TO VCC VOUT 2.25V TO 13.2V RCB CB VCC GND N GND SENSE GATE OUT MAX5924 MAX5926 SEE FIGURE 2 FOR A DETAILED TYPICAL OPERATING CIRCUIT WITH RSENSE. MAX5924/MAX5925/ MAX5926 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor Absolute Maximum Ratings (All voltages referenced to GND, unless otherwise noted.) VCC.........................................................................-0.3V to +14V GATE*.....................................................................-0.3V to +20V All Other Pins.......... -0.3V to the lower of (VCC + 0.3V) or +14V SC_DET Current (200ms pulse width, 15% duty cycle)...140mA Continuous Current (all other pins).....................................20mA Continuous Power Dissipation (TA = +70°C) 10-Pin μMAX (derate 6.9mW/°C above +70°C)...........556mW 16-Pin QSOP (derate 18.9mW/°C above +70°C)......1509mW Operating Temperature Range.......................... -40°C to +105°C Junction Temperature.......................................................+150°C Storage Temperature Range............................. -65°C to +150°C Lead Temperature (soldering, 10s).................................. +300°C Soldering Temperature (reflow)........................................+260°C *GATE is internally driven and clamped. Do not drive GATE with external source. 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. Electrical Characteristics (VCC, EN (MAX5924/MAX5925), EN1 (MAX5926) = +2.7V to +13.2V; EN2 (MAX5926) = 0V; VS (see Figure 1) = +1.05V to VCC; TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 5V, RL = 500Ω from OUT to GND, CL = 1μF, SLEW = open, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER POWER SUPPLIES SYMBOL VCC Operating Range VCC Supply Current ICC VS Operating Range VS UNDERVOLTAGE LOCKOUT (UVLO) UVLO Threshold VCC UVLO Deglitch Time VCC UVLO Startup Delay LOAD-PROBE Load-Probe Resistance (Note 3) Load-Probe Timeout Load-Probe Threshold Voltage CIRCUIT BREAKER VUVLO tDG RLP tLP VLP,TH ICB25 ICB85 www.maximintegrated.com MIN TYP MAX UNITS V 2.7 13.2 VS as defined in Figure 1 1.0 VCC Default value, VS and VCC increasing, Figure 1 1.73 FET is fully enhanced, SC_DET = VCC 1.5 (Note 2) tD,UVLO ICB Circuit-Breaker Programming Current CONDITIONS 2.7V < VCC < 5V 5V < VCC < 13.2V 2.06 2.5 2.47 900 V mA V µs 123 200 350 4 30 65 3 10 20 ms Ω 43 102 205 ms (Note 4) 172 200 235 mV TC = high (MAX5926), VCC = 2.7V and VCB = 1V MAX5924 2.7V ≤ VCC ≤ 13.2V 34 37 42 VCC = 2.7V, VCB = 1V, TA = +25°C 30 40 50 VCC = 2.7V, VCB = 1V, TA = +105°C (MAX5925D) 45 60 80 2.7V ≤ VCC ≤ 13.2V, TA = +25°C 40 50 60 2.7V ≤ VCC ≤ 13.2V, TA = +105°C (MAX5925D) 40 60 80 VCC = 2.7V and VCB = 1V, TA = +85°C 40 50 60 2.7V ≤ VCC ≤ 13.2V, TA = +85°C 50 60 70 TC = low (MAX5926), MAX5925 (Note 5) TC = low (MAX5926), MAX5925 (Note 5) 37 µA Maxim Integrated │  2 MAX5924/MAX5925/ MAX5926 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor Electrical Characteristics (continued) (VCC, EN (MAX5924/MAX5925), EN1 (MAX5926) = +2.7V to +13.2V; EN2 (MAX5926) = 0V; VS (see Figure 1) = +1.05V to VCC; TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 5V, RL = 500Ω from OUT to GND, CL = 1μF, SLEW = open, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL Circuit-Breaker Programming Current During Startup ICB,SU Circuit-Breaker Enable Threshold VCB,EN Circuit-Breaker Comparator Offset Voltage VCB_OS CONDITIONS MIN VGATE - VOUT, rising gate voltage (Note 6) 2.3 RCBF Figure 3 1.2 Slow Circuit-Breaker Delay tCBS VCB - VSENSE = 10mV 0.95 VGATE = 2.5V, VCC = 13.2V, TA = -40°C to +85°C VGATE = 2.5V, VCC = 13.2V, TA = -40°C to +105°C (MAX5925D) Circuit-Breaker Trip Gate Pulldown Current Circuit-Breaker Temperature Coefficient OUT Current MOSFET DRIVER tCBF IGATE,PD TCICB VCB - VSENSE = 500mV Load Voltage Slew Rate Gate Pullup Current Capacity ENABLE COMPARATOR EN, EN1 Reference Threshold EN, EN1 Hysteresis SR IGATE VEN/UVLO VEN,HYS µA 4.65 V 0.3 ±4.7 mV 1.9 2.7 kΩ 1.6 2.95 ms 280 ns 13.5 27 mA 12 27 mA 0 MAX5925, TC = low (MAX5926) 3300 IOUT VGS ppm/°C 120 VGATE - VOUT 2.7V ≤ VCC ≤ 13.2V, TA = -40°C to +105°C (MAX5925D) 4.2 5.5 µA 7.2 V 4.0 SLEW = open, CGATE = 10nF 2.19 VGATE = 0V 239 CSLEW = 300nF, CGATE = 10nF (Note 8) UNITS 3.6 MAX5924, TC = high (MAX5926) 2.7V ≤ VCC ≤ 13.2V, TA = -40°C to +85°C External Gate Drive MAX 2 x ICB Fast Circuit-Breaker Offset Resistor Fast Circuit-Breaker Delay TYP 5.5 7.2 9.5 V/ms 0.84 µA VEN (MAX5924/MAX5925) or VEN1 (MAX5926) rising, TA = -40°C to +85°C 0.747 0.795 0.850 VEN (MAX5925D) rising, TA = -40°C to +105°C 0.747 0.795 0.875 V 30 mV IEN EN (MAX5924/MAX5925) = VCC, EN1 (MAX5926) = VCC ±8 ±50 nA Power-Good Output Low Voltage VOL IOL = 1mA 0.3 0.4 V Power-Good Output Open-Drain Leakage Current IOH PGOOD/PGOOD = 13.2V 0.2 1 µA 3.6 4.7 V EN, EN1 Input Bias Current DIGITAL OUTPUTS (PGOOD, PGOOD) Power-Good Trip Point Power-Good Hysteresis www.maximintegrated.com VTHPGOOD VGATE - VOUT, rising gate voltage VPG,HYS VCB_EN 0.36 V Maxim Integrated │  3 MAX5924/MAX5925/ MAX5926 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor Electrical Characteristics (continued) (VCC, EN (MAX5924/MAX5925), EN1 (MAX5926) = +2.7V to +13.2V; EN2 (MAX5926) = 0V; VS (see Figure 1) = +1.05V to VCC; TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 5V, RL = 500Ω from OUT to GND, CL = 1μF, SLEW = open, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS LOGIC AND TIMING (TC, LATCH (MAX5926), EN2 (MAX5926) Autoretry Delay tRETRY Autoretry mode VIH Input Voltage VIL MIN TYP MAX UNITS 0.6 1.6 3.3 s 2.0 V 0.4 Input Bias Current IBIAS Logic high at 13.2V Time to Clear a Latched Fault TCLR MAX5924A/MAX5924B MAX5925A/MAX5925B MAX5926 in latched mode 3 µA 200 µS Note Note Note Note Note 1: All devices are 100% tested at TA = +25°C and +85°C. All temperature limits at -40°C are guaranteed by design. 2: VCC drops 30% below the undervoltage lockout voltage during tDG are ignored. 3: RLP is the resistance measured between VCC and SC_DET during the load-probing phase, tLP. 4: Tested at +25°C and +85°C. Guaranteed by design at -40°C. 5: The circuit-breaker programming current increases linearly from VCC = 2.25V to 5V. See the Circuit-Breaker Current vs. Supply Voltage graph in the Typical Operating Characteristics. Note 6: See the Startup Mode section for more information. Note 7: VGATE is clamped to 17V (typ) above ground. Note 8: dv/dt = 330 x 10-9/CSLEW (V/ms), nMOS device used for measurement was IRF9530N. Slew rate is measured at the load. Typical Operating Characteristics (VCC = 5V, CL = 1μF, CSLEW = 330nF, CGATE = 10nF, RL = 500Ω, Figure 1, TA = +25°C, unless otherwise noted.) VCC = VS 2.0 DISABLED 0.8 VCC = 5.0V 1.2 VCC = 3.0V 0.8 0.4 4 6 8 VCC (V) www.maximintegrated.com 10 12 14 0 6 5 VS = 1V VS = 3V 4 VS = 5V VS = VCC VCC = 2.25V 3 0.4 2 7 VCC = 13.2V 1.6 1.2 ICC (mA) ICC (mA) 1.6 0 2.4 VGATE - VS (V) ENABLED MAX5924 toc02 VCC = VS MAX5924 toc01 2.0 GATE-DRIVE VOLTAGE vs. SUPPLY VOLTAGE MAX5926 SUPPLY CURRENT vs. TEMPERATURE MAX5924 toc03 MAX5926 SUPPLY CURRENT vs. SUPPLY VOLTAGE -40 -15 10 35 60 TEMPERATURE (°C) 85 2 2 4 6 8 10 12 14 VCC (V) Maxim Integrated │  4 MAX5924/MAX5925/ MAX5926 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor Typical Operating Characteristics (continued) (VCC = 5V, CL = 1μF, CSLEW = 330nF, CGATE = 10nF, RL = 500Ω, Figure 1, TA = +25°C, unless otherwise noted.) 52 ICB (µA) VCC = 3.0V VCC = 13.2V 10 35 60 TEMPERATURE (°C) 85 VCC = VS 4 6 8 10 12 80 CIRCUIT-BREAKER PROGRAMMING CURRENT vs. TEMPERATURE VCC = VS = 5V 70 ICB (µA) 38.8 TC = 3300ppm/°C 50 38.6 40 38.4 30 4 6 8 VCC (V) www.maximintegrated.com 10 12 2 4 6 14 20 TC = 0ppm/°C -40 -15 10 8 10 12 14 VCC (V) 60 2 47 14 VS (V) 39.0 ICB (µA) 2 0 CIRCUIT-BREAKER CURRENT vs. SUPPLY VOLTAGE (TC = 0ppm/°C) 39.2 38.2 VCC = 13.2V 35 TEMPERATURE (°C) 60 85 SLEW RATE vs. CSLEW 100 SLEW RATE (V/ms) -15 MAX5924 toc07 39.4 -40 36 51 49 TC = 0ppm/°C 40 3.5 3.0 44 MAX5924 toc09 4.0 48 VCC = VS 53 MAX5924 toc08 VGS (V) 5.0 4.5 TC = 3300ppm/°C CIRCUIT-BREAKER CURRENT vs. SUPPLY VOLTAGE (TC = 3300ppm/°C) MAX5924 toc06 VCC = 5.0V 55 ICB (µA) VCC = VS 5.5 56 MAX5924 toc04 6.0 CIRCUIT-BREAKER CURRENT vs. HOT-SWAP VOLTAGE MAX5924 toc05 GATE DRIVE VOLTAGE vs. TEMPERATURE 10 1 0.1 0 500 1000 1500 2000 CSLEW (nF) Maxim Integrated │  5 MAX5924/MAX5925/ MAX5926 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor Typical Operating Characteristics (continued) (VCC = 5V, CL = 1μF, CSLEW = 330nF, CGATE = 10nF, RL = 500Ω, Figure 1, TA = +25°C, unless otherwise noted.) TURN-ON WAVEFORM (CSLEW = OPEN) TURN-ON WAVEFORM (CSLEW = 330nF) MAX5924 toc10 GATE 5V/div MAX5924 toc11 GATE 5V/div 0V 0V OUT 5V/div 0V OUT 5V/div 0V PGOOD 5V/div 0V PGOOD 5V/div 0V 2ms/div 200µs/div OVERCURRENT CIRCUIT-BREAKER EVENT TURN-OFF WAVEFORM MAX5924 toc13 MAX5924 toc12 1A/div EN1 5V/div 0V GATE 5V/div 0V IFET 0A tCBS 10V/div GATE 0V 10V/div 0V OUT PGOOD 5V/div 0V 2µs/div AUTORETRY DELAY MAX5924 toc14 1A/div EN1 tD,UVLO 0A GATE 5V/div OUT 0V 5V/div 0V 2µs/div www.maximintegrated.com 0V MAX5924 toc15 5V/div 0V tRETRY 5V/div SC_DET 0V OUT 100mV/div 5V/div PGOOD 0V 400µs/div SHORT-CIRCUIT CIRCUIT-BREAKER EVENT IFET 5V/div PGOOD 0V 400ms/div Maxim Integrated │  6 MAX5924/MAX5925/ MAX5926 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor Typical Operating Characteristics (continued) (VCC = 5V, CL = 1μF, CSLEW = 330nF, CGATE = 10nF, RL = 500Ω, Figure 1, TA = +25°C, unless otherwise noted.) OVERCURRENT FAULT AND AUTORETRY DELAY UVLO DELAY AND LOAD PROBING MAX5924 toc16 EN1 GATE SC_DET MAX5924 toc17 5V/div 0V 5V/div 0V EN1 5V/div SC_DET 5V/div 0V tD,UVLO tLP 5V/div 0V OUT 200mV/div 0V OUT 100mV/div 0V 0V 400ms/div UVLO RESPONSE 40ms/div UVLO DEGLITCH RESPONSE MAX5924 toc18 MAX5924 toc19 >tDG 2V/div GATE 2V/div GATE