MAX5924/MAX5925/MAX5926 19-3443 Rev 3 4/10 1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor General Description Features Hot Swap 1V to 13.2V with V 2.25V The MAX5924/MAX5925/MAX5926 1V to 13.2V hot-swap CC controllers allow the safe insertion and removal of circuit Drive High-Side n-Channel MOSFET cards into live backplanes. These devices hot swap sup- Operation With or Without R SENSE plies ranging from 1V to 13.2V provided that the device Temperature-Compensated R Sensing DS(ON) supply voltage, V , is at or above 2.25V and the hot- CC Protected During Turn-On into Shorted Load swapped supply, V , does not exceed V . S CC Adjustable Circuit-Breaker Threshold The MAX5924/MAX5925/MAX5926 hot-swap controllers Programmable Slew-Rate Control limit the inrush current to the load and provide a circuit- breaker function for overcurrent protection. The devices Programmable Turn-On Voltage operate with or without a sense resistor. When operat- Autoretry or Latched Fault Management ing without a sense resistor, load-probing circuitry 10-Pin MAX or 16-Pin QSOP Packages 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 Ordering Information overcurrent protection by monitoring the voltage drop across the external MOSFET on-resistance. In the event PART TEMP RANGE PIN-PACKAGE of a fault condition, the load is disconnected. MAX5924AEUB -40C to +85C 10 MAX The MAX5924/MAX5925/MAX5926 include many inte- MAX5924BEUB -40C to +85C 10 MAX grated features that reduce component count and MAX5924CEUB* -40C to +85C 10 MAX design time, including configurable turn-on voltage, MAX5924DEUB* -40C to +85C 10 MAX slew rate, and circuit-breaker threshold. An on-board MAX5925AEUB -40C to +85C 10 MAX charge pump provides the gate drive for a low-cost, external n-channel MOSFET. MAX5925BEUB* -40C to +85C 10 MAX The MAX5924/MAX5925/MAX5926 are available with MAX5925CEUB* -40C to +85C 10 MAX open-drain PGOOD and/or PGOOD outputs. The MAX5925DEUB* -40C to +85C 10 MAX MAX5925/MAX5926 also feature a circuit breaker with MAX5926EEE -40C to +85C 16 QSOPEP** temperature-compensated R sensing. The DS(ON) *Future productcontact factory for availability. MAX5926 features a selectable 0ppm/C or 3300ppm/C temperature coefficient. The MAX5924 temperature coef- **EP = Exposed pad. ficient is 0ppm/C and the MAX5925 temperature coeffi- cient is 3300ppm/C. Autoretry and latched fault- management configurations are available (see the Typical Operating Circuits Selector Guide). TYPICAL OPERATION WITHOUT R SENSE BACKPLANE REMOVABLE CARD Applications N V 1V TO V OUT Base Stations CC V S 2.25V TO 13.2V RAID V CC R CB R Remote-Access Servers SC Network Routers and Switches CB GATE SENSE OUT Servers V SC DET CC Portable Device Bays MAX5925 GND GND MAX5926 MAX is a registered trademark of Maxim Integrated Products, Inc. SEE FIGURE 1 FOR A DETAILED TYPICAL OPERATING CIRCUIT WITHOUT R . SENSE Selector Guide appears at end of data sheet. Typical Operating Circuits continued at end of data sheet. Pin Configurations appear at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE1V to 13.2V, n-Channel Hot-Swap Controllers 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 +85C 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 = A CC L L open, 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 D efault v alue, V and V i ncreas i ng, Fi g ure 1 1.73 2.06 2.47 V UVLO S C C 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 CC CB 37 TC = high = 1V I CB (MAX5926), MAX5924 2.7V V 13.2V 34 37 42 CC V = 2.7V, V = CC CB 30 40 50 1V, T = +25C A TC = low (MAX5926), Circuit-Breaker Programming I CB25 A MAX5925 (Note 5) 2.7V V 13.2V, Current CC 40 50 60 T = +25C A V = 2.7V and V CC CB 40 50 60 = 1V, T = +85C A TC = low (MAX5926), I CB85 MAX5925 (Note 5) 2.7V V 13.2V, CC 50 60 70 T = +85C A 2 MAX5924/MAX5925/MAX5926