MAX6874/MAX6875 19-3438 Rev 0 10/04 EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors General Description Features The MAX6874/MAX6875 EEPROM-configurable, multi- Six (MAX6874) or Four (MAX6875) Configurable voltage supply sequencers/supervisors monitor several Input Voltage Detectors voltage detector inputs and general-purpose logic One High Voltage Input (+1.25V to +7.625V or inputs, and provide programmable open-drain outputs +2.5V to +13.2V Thresholds) for highly configurable power-supply sequencing appli- One Voltage Input (+1.25V to +3.05V or cations. The MAX6874 provides six voltage monitor +2.5V to +5.5V) inputs, four general-purpose inputs, and eight program- Four (MAX6874) or Two (MAX6875) Positive mable open-drain outputs. The MAX6875 provides four Voltage Inputs (+0.5V to +3.05V or +1V voltage monitor inputs, three general-purpose inputs, to +5.5V) and five programmable open-drain outputs. Manual reset Four (MAX6874) or Three (MAX6875) General- and margin disable inputs provide additional flexibility. Purpose Logic Inputs All voltage detectors offer configurable thresholds for Two Configurable Watchdog Timers undervoltage detection. One high-voltage input (IN1) Eight (MAX6874) or Five (MAX6875) Programmable provides detector threshold voltages from +2.5V to Open-Drain Outputs +13.2V in 50mV increments, or from +1.25V to +7.625V Active-High or Active-Low in 25mV increments. A second positive input (IN2) pro- Timing Delays from 25s to 1600ms vides detector threshold voltages from +2.5V to +5.5V in 50mV increments, or from +1.25V to +3.05V in 25mV Margining Disable and Manual Reset Controls increments. Positive inputs (IN3IN6) provide detector 4kb Internal User EEPROM threshold voltages from +1V to +5.5V in 20mV incre- Endurance: 100,000 Erase/Write Cycles ments, or from +0.5V to +3.05V in 10mV increments. Data Retention: 10 Years Programmable output stages control power-supply 2 I C/SMBus-Compatible Serial Configuration/ sequencing or system resets/interrupts. Program the Communication Interface open-drain outputs as active-high or active-low. 1% Threshold Accuracy Programmable timing delay blocks configure each output to wait between 25s and 1600ms before deasserting. 2 An SMBus/I C-compatible serial data interface pro- Ordering Information grams and communicates with the configuration EEP- ROM, the configuration registers, and the internal 4kb PIN- PKG user EEPROM of the MAX6874/MAX6875. PART TEMP RANGE PACKAGE CODE The MAX6874/MAX6875 are available in a 7mm x 7mm MAX6874 ETJ -40C to +85C 32 Thin QFN T3277-2 x 0.8mm 32-pin thin QFN package and operate over the extended temperature range (-40C to +85C). MAX6875 ETJ -40C to +85C 32 Thin QFN T3277-2 Applications Telecommunications/Central Office Systems Networking Systems Servers/Workstations Base Stations Storage Equipment Multimicroprocessor/Voltage Systems SMBus is a trademark of Intel Corp. Pin Configurations, Typical Operating Circuit, and Selector Guide appear at end of data sheet. 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. EVALUATION KIT AVAILABLEEEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND) Continuous Power Dissipation (T = +70C) A IN2IN6, ABP, SDA, SCL, A0, A1, 32-Pin 7mm x 7mm Thin QFN GPI1GPI4, MR, MARGIN, PO5PO8 (derate 33.3mW/C above +70C).............................2667mW (MAX6874), PO3PO5 (MAX6875)...................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C IN1, PO1PO4 (MAX6874), PO1PO2 (MAX6875)...-0.3V to +14V Maximum Junction Temperature .....................................+150C DBP ..........................................................................-0.3V to +3V Storage Temperature Range .............................-65C to +150C Input/Output Current (all pins)..........................................20mA Lead Temperature (soldering, 10s) .................................+300C 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 = +6.5V to +13.2V, V V = +2.7V to +5.5V, GPI = GND, MARGIN = MR = DBP, T = -40C to +85C, unless otherwise IN1 IN2 IN6 A noted. Typical values are at T = +25C.) (Notes 1, 2) A PARAMETER SYMBO L CONDITIONS MIN TYP MAX UNITS Voltage on IN1 to ensure the device is fully V 4.0 13.2 IN1 operational, IN3IN6 = GND Operating Voltage Range V (Note 3) V to Voltage on any one of IN3IN5 to ensure the IN3 2.7 5.5 V device is fully operational, IN1 = GND IN5 IN1 Supply Voltage Minimum voltage on IN1 to guarantee that the V 6.5 V IN1P (Note 3) device is powered through IN1 Minimum voltage on one of IN3IN5 to Undervoltage Lockout V 2.5 V UVLO guarantee the device is EEPROM configured. V = +13.2V, IN2IN6 = GND, no load 1.2 1.5 mA IN1 Supply Current I CC Writing to configuration registers or EEPROM, 1.3 2 mA no load V (50mV increments) 2.5 13.2 IN1 V (25mV increments) 1.250 7.625 IN1 V (50mV increments) 2.50 5.5 IN2 Threshold Range V V TH V (25mV increments) 1.250 3.05 IN2 V V (20mV increments) 1.0 5.5 IN3 IN6 V V (10mV increments) 0.50 3.05 IN3 IN6 T = +25C -1.0 +1.0 A Threshold Accuracy IN1IN6, V falling % IN T = -40C to +85C -1.5 +1.5 A Threshold Hysteresis V 0.3 % V TH-HYST TH Reset Threshold Temperature ppm/ V /C 10 TH Coefficient C Threshold-Voltage Differential V DNL -1 +1 LSB TH Nonlinearity 2 MAX6874/MAX6875