MAX5930A/MAX5931A/MAX5931B 19-4200 Rev 0 7/08 Low-Voltage, Triple, Hot-Swap Controllers/ Power Sequencers/Voltage Trackers General Description Features The MAX5930A/MAX5931A/MAX5931B +1V to +15V Safe Hot Swap for +1V to +15V Power Supplies triple hot-swap controllers provide complete protection with Any Input Voltage (V ) 2.7V IN for multisupply systems. They allow the safe insertion Adjustable Circuit-Breaker/Current-Limit and removal of circuit cards into live backplanes. These Threshold from 25mV to 100mV devices hot swap multiple supplies ranging from +1V to Configurable Tracking, Sequencing, or +15V, provided one supply is at or above +2.7V. The Independent Operation Modes input voltage rails (channels) can be configured to sequentially turn-on/off, track each other, or have com- VariableSpeed/BiLevel Circuit-Breaker Response pletely independent operation. Internal Charge Pumps Generate n-Channel The discharged filter capacitors of the circuit card provide MOSFET Gate Drives low impedance to the live backplane. High inrush cur- Inrush Current Regulated at Startup rents from the backplane to the circuit card can burn up Autoretry or Latched Fault Management connectors and components, or momentarily collapse the backplane power supply leading to a system reset. The Programmable Undervoltage Lockout MAX5930A/MAX5931A/MAX5931B hot-swap controllers Status Outputs Indicate Fault/Safe Condition prevent such problems by gradually ramping up the out- put voltage and regulating the current to a preset limit Ordering Information when the board is plugged in, allowing the system to sta- bilize safely. After the startup cycle is complete, on-chip PART TEMP RANGE PIN-PACKAGE comparators provide VariableSpeed/BiLevel protection MAX5930AEEG+ -40C to +85C 24 QSOP against short-circuit and overcurrent faults, and provide MAX5931AEEP+ -40C to +85C 20 QSOP immunity against system noise and load transients. MAX5931BEEP+ -40C to +85C 20 QSOP The load is disconnected in the event of a fault condi- +Denotes a lead-free/RoHS-compliant package. tion. The MAX5930A/MAX5931A/MAX5931B fault-man- agement mode is selectable, allowing latched fault or Selector Guide and Typical Operating Circuit appear at end autoretry after a fault condition. of data sheet. The MAX5930A/MAX5931A/MAX5931B offer a variety of options to reduce external component count and Pin Configurations design time. All devices integrate an on-board charge pump to drive the gates of low-cost, external n-channel TOP VIEW MOSFETs, an adjustable startup timer, and an adjustable current limit. The devices offer integrated POL 1 24 MODE features like startup current regulation and current ON2 2 23 ON3 glitch protection to eliminate external timing resistors ON1 3 22 LIM2 and capacitors. The MAX5931A provides an open- LIM1 4 21 IN2 drain, active-low status output for each channel, the MAX5930A IN1 5 20 SENSE2 MAX5931B provides an open-drain, active-high status output for each channel, and the MAX5930A status out- SENSE1 6 19 GATE2 put polarity is selectable. GATE1 7 18 LIM3 The MAX5930A is available in a 24-pin QSOP package, STAT1 8 17 IN3 and the MAX5931A/MAX5931B are available in a 20-pin STAT2 9 16 SENSE3 QSOP package. All devices are specified over the TIM 10 15 GATE3 extended -40C to +85C temperature range. LATCH 11 14 GND Applications STAT3 12 13 BIAS Network Switches, Routers, Power-Supply QSOP Hubs Sequencing/Tracking Hot Plug-In Daughter Cards Base-Station Line Cards Pin Configurations continued at end of data sheet. RAID Portable Computer Device VariableSpeed/BiLevel is a trademark of Maxim Integrated Bays (Docking Stations) Solid-State Circuit Breakers Products, Inc. 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.Low-Voltage, Triple, Hot-Swap Controllers/ Power Sequencers/Voltage Trackers ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) Continuous Power Dissipation (T = +70C) A IN ..........................................................................-0.3V to +16V 20-Pin QSOP (derate 9.1mW/C above +70C)............727mW GATE .............................................................-0.3V to (IN + 6V) 24-Pin QSOP (derate 9.5mW/C above +70C)............762mW BIAS (Note 1) .............................................. (V - 0.3V) to +16V Operating Temperature Range ...........................-40C to +85C IN ON , STAT , LIM (MAX5930A), TIM, MODE, Junction Temperature .....................................................+150C LATCH, POL (MAX5930A)........................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C IN SENSE ........................................................-0.3V to (IN + 0.3V) Lead Temperature (soldering, 10s) .................................+300C Current into Any Pin..........................................................50mA Note 1: V is the largest of V , V , and V . IN IN1 IN2 IN3 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 = +1V to +15V, provided at least one supply is larger than or equal to +2.7V, T = -40C to +85C, unless otherwise noted. Typical IN A values are at V = 12.0V, V = 5.0V, V = 3.3V, V = +3.3V, and T = +25C.) (Notes 1, 2) IN1 IN2 IN3 ON A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLIES IN Input Voltage Range V At least one V +2.7V 1.0 15 V IN IN I + I + I , V = 2.7V, IN1 IN2 IN3 ON Supply Current I 2.5 5 mA Q V = +15V, after STAT high IN CURRENT CONTROL LIM = GND (Note 4) 22.5 25 28 Slow-Comparator Threshold R = 10k (MAX5930A) 80 125 LIM (V - V ) V mV IN SENSE SC,TH R x 7.5 x LIM (Note 3) R from LIM to GND (MAX5930A) LIM -6 10 + 25mV 1mV overdrive 3 ms Slow-Comparator Response Time t SCD (Note 4) 50mV overdrive 130 s Fast-Comparator Threshold 2 x V mV FC,TH (V - V ) V IN SENSE SC,TH Fast-Comparator Response Time t 10mV overdrive, from overload condition 200 ns FCD SENSE Input Bias Current I V = V 0.03 1 A B SENSE SENSE IN MOSFET DRIVER R = 100k 8.0 10.8 13.6 TIM Startup Period (Note 5) t R = 4k (minimum value) 0.30 0.4 0.55 ms START TIM TIM unconnected (default) 5 9 14 2 MAX5930A/MAX5931A/MAX5931B