EVALUATION KIT AVAILABLE MAX5924/MAX5925/ 1V to 13.2V, n-Channel Hot-Swap Controllers MAX5926 Require No Sense Resistor General Description Benefits and Features The MAX5924/MAX5925/MAX5926 1V to 13.2V hot-swap Hot Swap 1V to 13.2V with V 2.25V CC controllers allow the safe insertion and removal of circuit Drive High-Side nMOSFET cards into live backplanes. These devices hot swap supplies Operation With or Without R SENSE ranging from 1V to 13.2V provided that the device supply voltage, V , is at or above 2.25V and the hot-swapped Temperature-Compensated R Sensing CC DS(ON) supply, V , does not exceed V . S CC Protected During Turn-On into Shorted Load The MAX5924/MAX5925/MAX5926 hot-swap controllers Adjustable Circuit-Breaker Threshold limit the inrush current to the load and provide a circuit- Programmable Slew-Rate Control breaker function for overcurrent protection. The devices Programmable Turn-On Voltage operate with or without a sense resistor. When operating without a sense resistor, load-probing circuitry ensures a Autoretry or Latched Fault Management short circuit is not present during startup, then gradually 10-Pin MAX or 16-Pin QSOP Packages turns on the external MOSFET. After the load probing is complete, on-chip comparators provide overcurrent Typical Operating Circuits protection by monitoring the voltage drop across the external MOSFET on-resistance. In the event of a fault TYPICAL OPERATION WITHOUT R SENSE condition, the load is disconnected. BACKPLANE REMOVABLE CARD N V 1V TO V OUT The devices include many integrated features that reduce CC V S 2.25V TO 13.2V component count and design time, including configurable V CC R turn-on voltage, slew rate, and circuit-breaker threshold. An CB R SC on-board charge pump provides the gate drive for a low- CB GATE SENSE OUT cost, external nMOSFET. V SC DET The MAX5924/MAX5925/MAX5926 are available with CC MAX5925 open-drain PGOOD and/or PGOOD outputs. The MAX5926 MAX5925/MAX5926 also feature a circuit breaker GND GND with temperature-compensated R sensing. The DS(ON) MAX5926 features a selectable 0ppm/C or 3300ppm/C SEE FIGURE 1 FOR A DETAILED TYPICAL OPERATING CIRCUIT WITHOUT R . temperature coefficient. The MAX5924 temperature SENSE coefficient is 0ppm/C and the MAX5925 temperature TYPICAL OPERATION WITH R SENSE coefficient is 3300ppm/C. Autoretry and latched fault- BACKPLANE REMOVABLE CARD management configurations are available (see the R SENSE N V 1V TO V OUT CC Selector Guide). V S 2.25V TO 13.2V V CC Applications R CB Base Stations CB SENSE GATE OUT RAID Remote-Access Servers V CC Network Routers and Switches MAX5924 Servers MAX5926 GND GND Portable Device Bays MAX is a registered trademark of Maxim Integrated Products, Inc. SEE FIGURE 2 FOR A DETAILED TYPICAL OPERATING CIRCUIT WITH R . SENSE Selector Guide and Ordering Information appears at end of data sheet. 19-3443 Rev 4 1/16MAX5924/MAX5925/ 1V to 13.2V, n-Channel Hot-Swap Controllers MAX5926 Require No Sense Resistor Absolute Maximum Ratings (All voltages referenced to GND, unless otherwise noted.) Continuous Power Dissipation (T = +70C) A V ........................................................................-0.3V to +14V 10-Pin MAX (derate 6.9mW/C above +70C) ..........556mW CC GATE* ....................................................................-0.3V to +20V 16-Pin QSOP (derate 18.9mW/C above +70C) .....1509mW All Other Pins ......... -0.3V to the lower of (V + 0.3V) or +14V Operating Temperature Range ......................... -40C to +105C CC SC DET Current (200ms pulse width, 15% duty cycle) ..140mA Junction Temperature ......................................................+150C Continuous Current (all other pins) ....................................20mA Storage Temperature Range ............................ -65C to +150C Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C *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 (V , EN (MAX5924/MAX5925), EN1 (MAX5926) = +2.7V to +13.2V EN2 (MAX5926) = 0V V (see Figure 1) = +1.05V to V CC S CC T = -40C to +85C, unless otherwise noted. Typical values are at V = 5V, R = 500 from OUT to GND, C = 1F, SLEW = open, A CC L L T = +25C, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLIES V Operating Range V 2.7 13.2 V CC CC V Operating Range V V as defined in Figure 1 1.0 V V S S S CC Supply Current I FET is fully enhanced, SC DET = V 1.5 2.5 mA CC CC UNDERVOLTAGE LOCKOUT (UVLO) UVLO Threshold V Default value, V and V increasing, Figure 1 1.73 2.06 2.47 V UVLO S CC V UVLO Deglitch Time t (Note 2) 900 s CC DG V UVLO Startup Delay t 123 200 350 ms CC D,UVLO LOAD-PROBE 2.7V < V < 5V 4 30 65 CC Load-Probe Resistance (Note 3) R LP 5V < V < 13.2V 3 10 20 CC Load-Probe Timeout t 43 102 205 ms LP Load-Probe Threshold Voltage V (Note 4) 172 200 235 mV LP,TH CIRCUIT BREAKER V = 2.7V and V = 1V 37 TC = high (MAX5926), CC CB I CB MAX5924 2.7V V 13.2V 34 37 42 CC V = 2.7V, V = 1V, CC CB 30 40 50 T = +25C A V = 2.7V, V CC CB = 1V, T = +105C 45 60 80 TC = low A (MAX5925D) I (MAX5926), CB25 Circuit-Breaker Programming MAX5925 (Note 5) 2.7V V 13.2V, A CC Current 40 50 60 T = +25C A 2.7V V 13.2V, CC 40 60 80 T = +105C (MAX5925D) A V = 2.7V and CC 40 50 60 TC = low V = 1V, T = +85C CB A I (MAX5926), CB85 2.7V V 13.2V, CC MAX5925 (Note 5) 50 60 70 T = +85C A Maxim Integrated 2 www.maximintegrated.com