MAX5933AMAX5933F/MAX5947A/B/C 19-3263 Rev 1 7/04 Positive High-Voltage, Hot-Swap Controllers General Description Features The MAX5933AMAX5933F/MAX5947A/B/C fully integrat- Pin- and Function-Compatible with the LT1641-2 ed hot-swap controllers for +9V to +80V positive supply (MAX5947B) rails (MAX5947A/B/C), allow for the safe insertion and Provides Safe Hot Swap for +9V to +80V Power- removal of circuit cards into live backplanes without caus- ing glitches on the backplane power-supply rail. The Supply Range (MAX5947A/B/C) MAX5947B is pin- and function-compatible with the Safe Board Insertion and Removal from Live LT1641-2. The other devices offer added features such Backplanes as a choice of active-high or active-low power-good out- puts (PWRGD/PWRGD), latched/autoretry fault manage- Latched/Autoretry Management ment, and autoretry duty-cycle options of 3.75% or 0.94% Active-Low or Active-High Power-Good Output (see the Selector Guide). Programmable Foldback Current Limiting The MAX5933AMAX5933F are available with a default undervoltage lockout threshold of +31V and operate over High-Side Drive for an External N-Channel MOSFET a supply voltage range of +33V to +80V. The Built-In Thermal Shutdown MAX5947A/B/C are available with a default undervoltage of +8.3V. All devices feature a programmable analog Undervoltage Lockout (UVLO) foldback current limit. If the device remains in current limit Overvoltage Protection for more than a programmable time, the external n-channel MOSFET is either latched off (MAX5933A/ User-Programmable Supply Voltage MAX5933C/MAX5947A) or is set to automatically restart Power-Up Rate after a timeout delay (MAX5933B/MAX5933D/MAX5933E/ MAX5933F/MAX5947B/MAX5947C). Ordering Information The MAX5933 and MAX5947 operate in the extended PART TEMP RANGE PIN-PACKAGE temperature range of -40C to +85C. These devices are MAX5933 ESA* -40C to +85C 8 SO available in an 8-pin SO package. MAX5947 ESA* -40C to +85C 8 SO Applications *Insert the desired suffix from the Selector Guide into the blank Hot Board Insertion to complete the part number. Electronic Circuit Breakers Industrial High-Side Switch/Circuit Breakers Typical Application Circuit and Pin Configuration appear at Network Routers and Switches end of data sheet. 24V/48V Industrial/Alarm Systems Selector Guide LATCHED AUTORETRY SUPPLY PWRGD DUTY CYCLE DEFAULT UVLO PART FAULT FAULT VOLTAGE OUTPUT LOGIC (%) (V) PROTECTION PROTECTION RANGE (V) MAX5933A Yes High 31 33 to 80 MAX5933B Yes High 3.75 31 33 to 80 MAX5933C Yes Low 31 33 to 80 MAX5933D Yes Low 3.75 31 33 to 80 MAX5933E Yes High 0.94 31 33 to 80 MAX5933F Yes Low 0.94 31 33 to 80 MAX5947A Yes Low 8.3 9 to 80 MAX5947B Yes High 3.75 8.3 9 to 80 MAX5947C Yes Low 3.75 8.3 9 to 80 Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Positive High-Voltage, Hot-Swap Controllers ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) Continuous Power Dissipation (T = +70C) A V .........................................................................-0.3V to +85V 8-Pin SO (derate 5.9mW/C above +70C)..................470mW CC SENSE, FB, ON ..........................................-0.3V to (V + 0.3V) Operating Temperature Range ...........................-40C to +85C CC TIMER, PWRGD, PWRGD.......................................-0.3V to +85V Maximum Junction Temperature .....................................+150C GATE ......................................................................-0.3V to +95V Storage Temperature Range .............................-60C to +150C Maximum GATE Current ....................................-50mA, +150mA Lead Temperature (soldering, 10s) .................................+300C Maximum Current into Any Other Pin................................50mA ESD Rating (Human Body Model)......................................2000V 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 = +24V (MAX5947A/B/C), V = +48V (MAX5933AMAX5933F), GND = 0V, T = -40C to +85C, unless otherwise noted. CC CC A Typical values are at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX5947A/B/C 9 80 Supply Voltage Range V V CC MAX5933AMAX5933F 33 80 Supply Current I V = 3V, V = 80V 1.4 3.5 mA CC ON CC MAX5947A/B/C 7.5 8.3 8.8 V low-to-high CC V Undervoltage Lockout V V CC LKO transition MAX5933AMAX5933F 29.5 31 32.5 MAX5947A/B/C 0.4 V Undervoltage Lockout CC V V LKOHYST Hysteresis MAX5933AMAX5933F 2 FB High-Voltage Threshold V FB low-to-high transition 1.280 1.313 1.345 V FBH FB Low-Voltage Threshold V FB high-to-low transition 1.221 1.233 1.245 V FBL FB Hysteresis V 80 mV FBHYST FB Input Bias Current I V = 0V -1 +1 A INFB FB V V 80V, ON = 0V, CC(MIN) CC FB Threshold Line Regulation V 0.05 mV/V FB T = 0C to +70C A V = 0V, T = 0C to +70C 8 12 17 SENSE Trip Voltage FB A V mV SENSETRIP (V - V ) CC SENSE V = 1V, T = 0C to +70C 39 47 55 FB A GATE Pullup Current I Charge pump on, V = 7V -5 -10 -20 A GATEUP GATE GATE Pulldown Current I Any fault condition, V = 2V 35 70 100 mA GATEDN GATE MAX5933AMAX5933F 10 13.6 18 V = 10.8V to 20V, CC 4.5 6.2 18.0 MAX5947A/B/C External N-Channel Gate Drive V V - V V GATE GATE CC V = 20V to 80V, CC 10 13.2 18 MAX5947A/B/C TIMER Pullup Current I V = 0V -24 -80 -120 A TIMERUP TIMER MAX5933AMAX5933D, 1.5 3 4.5 MAX5947A/B/C TIMER Pulldown Current I V = 1V A TIMERON TIMER MAX5933E/MAX5933F 0.37 0.75 1.12 ON Logic-High Threshold V ON low-to-high transition 1.280 1.313 1.345 V ONH ON Logic-Low Threshold V ON high-to-low transition 1.221 1.233 1.245 V ONL 2 MAX5933AMAX5933F/MAX5947A/B/C