ICL7665 Intersil Corporation, ICL7665 Datasheet
ICL7665
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ICL7665 Summary of contents
Page 1
... The ICL7665S, Super Programmable Over/Under Voltage Detector is a direct replacement for the industry standard ICL7665B offering wider operating voltage and temperature ranges, improved threshold accuracy (ICL7665SA), and temperature coefficient, and guaranteed maximum supply current. All improvements are highlighted in the electrical characteristics section ...
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... HYST1 and HYST2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25mA Operating Conditions Temperature Range ICL7665SC ICL7665SI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. ...
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... Electrical Specifications The specifications below are applicable to both the ICL7665S and ICL7665SA 5V, T Test Circuit Figure 7. Unless Otherwise Specified PARAMETER SYMBOL Output Leakage Currents of I OLK OUT and HYST I HLK I OLK I HLK Output Saturation Voltages V OUT1 Output Saturation Voltages ...
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... V < 1.3V, OUT1 Switch OFF, HYST1 Switch OFF SET1 V > 1.3V, OUT2 Switch OFF, HYST2 Switch ON SET2 V < 1.3V, OUT2 Switch ON, HYST2 Switch OFF SET2 NOTE: 5. See Electrical Specifications for exact thresholds. 3-65 ICL7665S TEST CONDITIONS V Switched between 1.0V to 1.6V SET 12pF OUT 20k , C = 12pF ...
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... HYST1 OUTPUT CURRENT 5 SET1 SET2 4.5 4 15V 3 3.0 2 2.0 1.5 1.0 0.5 0 -25 0 +20 AMBIENT TEMPERATURE ( FIGURE 5. SUPPLY CURRENT AS A FUNCTION OF AMBIENT TEMPERATURE 3-66 ICL7665S 2.0 1 1.0 0 15V 15 20 FIGURE 2. OUT2 SATURATION VOLTAGE AS A FUNCTION - -0.4 -0 -1.2 -1.6 -2.0 FIGURE 4. HYST2 OUTPUT SATURATION VOLTAGE vs V+ +40 + FIGURE 6 ...
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... OUT2 t OUT1 HYST2 HYST1 OUT2 Simple Threshold Detector HYST2 Figure 9 shows the simplest connection of the ICL7665S for threshold detection. From the graph 9B, it can be seen that low input voltage OUT1 is OFF, or high, while OUT2 ON, or low. As the input rises (e.g., at power-on) toward ...
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... HYST1 HYST2 R 21 SET1 SET2 OUT1 OUT2 OVERVOLTAGE R 11 FIGURE 10A. CIRCUIT CONFIGURATION 3-68 ICL7665S OUT OFF FIGURE 10B. TRANSFER CHARACTERISTICS FIGURE 10. THRESHOLD DETECTOR WITH HYSTERESIS Either detector may be used alone, as well as both together, in any of the circuits shown here. ...
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... The other side of the ICL7665S can be used to detect the absence of negative supplies. The trip points for OUT1 depend on both the negative supply voltages and the actual voltage of the +5V supply ...
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... V 7.3V, this circuit will provide a certain amount of warning before the 5V output begins to drop. The ICL7665S OUT2 is used to prevent a microprocessor from writing spurious data to a CMOS battery backup memory by causing OUT2 to go low when the 7805 5V output drops below the ICL7665S trip point. ...
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... DC INPUT 715k FIGURE 15. POWER FAIL WARNING AND POWERUP/POWERDOWN RESET Simple High/Low Temperature Alarm Figure 16 illustrates a simple high/low temperature alarm which uses the ICL7665S with an NPN transistor. The voltage at the top determined by the V 1 transistor and the position of R ’s wiper arm. This voltage 1 has a negative temperature coeffi ...
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... For information regarding Intersil Corporation and its products, see web site http://www.intersil.com 3-72 ICL7665S V+ HYST1 R 22k 4 ICL7665S 27k V SET1 R 5 OUT1 FIGURE 16. SIMPLE HIGH/LOW TEMPERATURE ALARM 5V REGULATOR 4700 F +5V HYST1 HYST2 ICL7665S V V SET1 SET2 1M OUT1 OUT2 LOW TEMPERATURE LIMIT ADJUST HYST2 22M ...