MAX6872/MAX6873 19-3439 Rev 0 10/04 EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors General Description Features The MAX6872/MAX6873 EEPROM-configurable, multi- Six (MAX6872) or Four (MAX6873) Configurable voltage supply sequencers/supervisors monitor several Input Voltage Detectors voltage detector inputs and four general-purpose logic One High Voltage Input (+1.25V to +7.625V or inputs. The MAX6872/MAX6873 feature programmable +2.5V to +13.2V Thresholds) outputs for highly configurable power-supply sequencing One Bipolar Voltage Input (1.25V to 7.625V applications. The MAX6872 features six voltage detector or 2.5V to 15.25V Thresholds) inputs and eight programmable outputs, while the Four (MAX6872) or Two (MAX6873) Positive MAX6873 features four voltage detector inputs and five Voltage Inputs (+0.5V to +3.05V or +1V to programmable outputs. Manual reset and margin disable +5.5V Thresholds) inputs offer additional flexibility. Four General-Purpose Logic Inputs All voltage detectors offer two configurable thresholds Two Configurable Watchdog Timers for undervoltage/overvoltage or dual undervoltage Eight (MAX6872) or Five (MAX6873) detection. One high voltage input (IN1) provides detec- Programmable Outputs tor threshold voltages from +2.5V to +13.2V in 50mV Active-High, Active-Low, Open-Drain, Weak increments, or from +1.25V to +7.625V in 25mV incre- Pullup, Push-Pull, Charge-Pump ments. A bipolar input (IN2) provides detector threshold Timing Delays from 25s to 1600ms voltages from 2.5V to 15.25V in 50mV increments, or from 1.25V to 7.625V in 25mV increments. Positive Margining Disable and Manual Reset Controls inputs (IN3IN6) provide detector threshold voltages 4kb Internal User EEPROM from +1V to +5.5V in 20mV increments, or from +0.5V Endurance: 100,000 Erase/Write Cycles to +3.05V in 10mV increments. Data Retention: 10 Years Programmable output stages control power-supply 2 I C/SMBus-Compatible Serial sequencing or system resets/interrupts. Programmable Configuration/Communication Interface output options include: active-high, active-low, open- 1% Threshold Accuracy drain, weak pullup, push-pull, and charge pump. Programmable timing delay blocks configure each output to wait between 25s and 1600ms before deasserting. A fault register logs the condition that caused each output to assert (undervoltage, overvoltage, manual reset, etc.). Ordering Information TM 2 An SMBus -/I C-compatible, serial data interface PIN- PKG programs and communicates with the configuration PART TEMP RANGE PACKAGE CODE EEPROM, the configuration registers, the internal 4kb user EEPROM, and the fault registers of the MAX6872ETJ -40C to +85C 32 Thin QFN T3277-2 MAX6872/MAX6873. MAX6873ETJ -40C to +85C 32 Thin QFN T3277-2 The MAX6872/MAX6873 are available in a 7mm x 7mm x 0.8mm 32-pin thin QFN package and operate over the extended -40C to +85C temperature range. Applications Telecommunications/Central Office Systems Networking Systems Servers/Workstations Base Stations SMBus is a trademark of Intel Corp. Storage Equipment Multimicroprocessor/Voltage Systems 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 IN3IN6, ABP, SDA, SCL, A0, A1, 32-Pin 7mm x 7mm Thin QFN GPI1GPI4, MR, MARGIN, PO5PO8 (derate 33.3mW/C above +70C).............................2667mW (MAX6872), PO3PO5 (MAX6873)...................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C IN1, PO1PO4 (MAX6872), PO1PO2 (MAX6873)...-0.3V to +14V Maximum Junction Temperature .....................................+150C IN2...........................................................................-20V to +20V Storage Temperature Range .............................-65C to +150C DBP ..........................................................................-0.3V to +3V Lead Temperature (soldering, 10s) .................................+300C Input/Output Current (all pins)..........................................20mA 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 = +10V, V V = +2.7V to +5.5V, GPI = GND, MARGIN = MR = DBP, T = -40C to +85C, unless IN1 IN2 IN3 IN6 A otherwise noted. Typical values are at T = +25C.) (Notes 1, 2) A PARAMETER SYMB O 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 IN3IN6 to ensure the IN3 2.7 5.5 V device is fully operational, IN1 = GND IN6 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 IN3IN6 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 15.25 IN2 Threshold Range V V TH V (25mV increments) 1.250 7.625 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 IN1IN6 positive, A V falling IN T = -40C to +85C -1.5 +1.5 A % T = +25C -1.5 +1.5 A -15.25V V -5V, IN2 Threshold Accuracy V falling IN2 T = -40C to +85C -2 +2 A T = +25C -75 +75 A -5V V 0, V IN2 IN2 mV falling T = -40C to +85C -100 +100 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 MAX6872/MAX6873