ICL7665 19-0001 Rev 3 11/15 Microprocessor Voltage Monitor with Dual Over/Undervoltage Detection General Description Features P Over/Undervoltage Warning The ICL7665 warns microprocessors (Ps) of overvolt- age and undervoltage conditions. It draws a typical Improved Second Source operating current of only 3A. The trip points and hys- Dual Comparator with Precision Internal Reference teresis of the two voltage detectors are individually pro- 3A Operating Current grammed via external resistors to any voltage greater 2% Threshold Accuracy (ICL7665A) than 1.3V. The ICL7665 will operate from any supply voltage in the 1.6V to 16V range, while monitoring volt- 1.6V to 16V Supply Voltage Range ages from 1.3V to several hundred volts. The Maxim On-Board Hysteresis Outputs ICL7665A is an improved version with a 2%-accurate Externally Programmable Trip Points V threshold and guaranteed performance over SET1 temperature. Monolithic, Low-Power CMOS Design The 3A quiescent current of the ICL7665 makes it ideal for voltage monitoring in battery-powered sys- tems. In both battery- and line-powered systems, the Ordering Information unique combination of a reference, two comparators, PART TEMP. RANGE PIN-PACKAGE and hysteresis outputs reduces the size and compo- + ICL7665CPA 0C to +70C 8 Plastic DIP nent count of many circuits. + ICL7665ACPA 0C to +70C 8 Plastic DIP Applications + ICL7665BCPA 0C to +70C 8 Plastic DIP + P Voltage Monitoring ICL7665CSA 0C to +70C 8 SO + ICL7665ACSA 0C to +70C 8 SO Low-Battery Detection + ICL7665BCSA 0C to +70C 8 SO Power-Fail and Brownout Detection + ICL7665CJA 0C to +70C 8 CERDIP Battery Backup Switching ICL7665ACJA+ 0C to +70C 8 CERDIP Power-Supply Fault Monitoring + ICL7665BCJA 0C to +70C 8 CERDIP Over/Undervoltage Protection +Denotes a lead(pb)-free/RoHS-compliant package. Ordering Information continued on last page. High/Low Temperature, Pressure, Voltage Alarms Pin Configurations TOP VIEW + OUT1 1 8 V+ Typical Operating Circuit 2 HYST1 7 OUT2 ICL7665 3 SET1 6 SET2 V IN1 V+ V IN2 4 GND 5 HYST2 8 OVERVOLTAGE UNDERVOLTAGE V+ DETECTION DETECTION 1 7 DIP/SO OUT1 OUT2 NMI ICL7665 3 6 SET1 SET2 GND 4 SIMPLE THRESHOLD DETECTOR Maxim Integrated Products 1Microprocessor Voltage Monitor with Dual Over/Undervoltage Detection ABSOLUTE MAXIMUM RATINGS Supply Voltage (Note 1) .........................................-0.3V to +18V Continuous Power Dissipation (T = +70C) A Output Voltages OUT1 and OUT2 Plastic DIP (derate 9.09mW/C above +70C) ............727mW (with respect to GND) (Note 1)..........................-0.3V to +18V SO (derate 5.88mW/C above +70C) ........................471mW Output Voltages HYST1 and HYST2 CERDIP (derate 8.00mW/C above +70C) ................640mW (with respect to V+) (Note 1) .............................+0.3V to -18V TO-99 (derate 6.67mW/C above +70C) ...................533mW Input Voltages SET1 and SET2 Operating Temperature Ranges (Note 1)........................................(GND - 0.3V) to (V+ + 0.3V) ICL7665C .......................................................0C to +70C Maximum Sink Output Current ICL7665I .....................................................-20C to +85C OUT1 and OUT2.............................................................25mA ICL7665E ....................................................-40C to +85C Maximum Source Output Current Storage Temperature Range .............................-65C to +160C HYST1 and HYST2 ........................................................-25mA Lead Temperature (soldering, 10sec) .............................+300C Note 1: Due to the SCR structure inherent in the CMOS process used to fabricate these devices, connecting any terminal to volt- ages greater than (V+ + 0.3V) or less than (GND - 0.3V) may cause destructive latchup. For this reason, we recommend that inputs from external sources that are not operating from the same power supply not be applied to the device before its supply is established, and that in multiple supply systems, the supply to the ICL7665 be turned on first. If this is not possi- ble, currents into inputs and/or outputs must be limited to 0.5mA and voltages must not exceed those defined above. 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+ = 5V, T = +25C, unless otherwise noted.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = +25C 1.6 16 A ICL7665 T = T to T 1.8 16 A MIN MIN Operating Supply Voltage V+ ICL7665A T = T to T 2.0 16 V A MIN MIN T = +25C 1.6 10 A ICL7665B T = T to T 1.8 10 A MIN MIN V+ = 2V 2.5 10 ICL7665, T = +25C A GND V SET1, V+ = 9V 2.6 10 ICL7665A, V V+, SET2 Supply Current I+ m A T = T to T A MIN MAX V+ = 15V 2.9 15 all outputs open circuit V+ = 2V 2.5 10 ICL7665B, T = +25C A V+ = 9V 2.6 10 V 1.150 1.300 1.450 SET1 ICL7665, ICL7665B, T = +25C A V 1.200 1.300 1.400 SET2 V 1.275 1.300 1.325 SET1 Input Trip Voltage V ICL7665A, T = +25C V SET A V 1.225 1.300 1.375 SET2 V 1.250 1.300 1.350 SET1 ICL7665A, T = T to T A MIN MAX V 1.215 1.300 1.385 SET2 V Tempco 100 ppm/C SET Supply Voltage Sensitivity R , R , R , R = 1M 0.004 %/V OUT1 OUT2 HYST1 HYST2 of V , V SET1 SET2 2 ICL7665