Datasheet

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FN3182.8

ICL7665S

CMOS Micropower Over/Under Voltage

Detector

The ICL7665S Super CMOS Micropower Over/Under

Voltage Detector contains two low power, individually

programmable Voltage detectors on a single CMOS chip.

Requiring typically 3µA for operation, the device is intended

for battery-operated systems and instruments which require

high or low voltage warnings, settable trip points, or fault

monitoring and correction. The trip points and hysteresis of

the two voltage detectors are individually programmed via

external resistors. An internal bandgap-type reference

provides an accurate threshold voltage while operating from

any supply in the 1.6V to 16V range.

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. All critical parameters are

guaranteed over the entire commercial and industrial

temperature ranges.

Pinout

ICL7665S

(SOIC, PDIP)

TOP VIEW

Features

• Guaranteed 10µA Maximum Quiescent Current Over

Temperature

• Guaranteed Wider Operating Voltage Range Over Entire

Operating Temperature Range

• 2% Threshold Accuracy (ICL7665SA)

• Dual Comparator with Precision Internal Reference

• 100ppm/°C Temperature Coefficient of Threshold Voltage

• 100% Tested at 2V

• Output Current Sinking Ability . . . . . . . . . . . . Up to 20mA

• Individually Programmable Upper and Lower Trip Voltages

and Hysteresis Levels

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Pocket Pagers

• Portable Instrumentation

• Charging Systems

• Memory Power Back-Up

• Battery Operated Systems

• Portable Computers

• Level Detectors

OUT 1

HYST 1

SET 1

GND

V+

OUT 2

SET 2

HYST 2

Data Sheet April 5, 2006

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

| Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

Summary of content (14 pages)

PAGE 1
ICL7665S ® Data Sheet CMOS Micropower Over/Under Voltage Detector The ICL7665S Super CMOS Micropower Over/Under Voltage Detector contains two low power, individually programmable Voltage detectors on a single CMOS chip. Requiring typically 3µA for operation, the device is intended for battery-operated systems and instruments which require high or low voltage warnings, settable trip points, or fault monitoring and correction.
PAGE 2
ICL7665S Ordering Information PART NUMBER PART MARKING TEMP. RANGE (°C) PKG. DWG. # PACKAGE ICL7665SACBA* 7665SACBA 0 to 70 8 Ld SOIC (N) M8.15 ICL7665SACBAZ* (Note) 7665SACBAZ 0 to 70 8 Ld SOIC (N) (Pb-free) M8.15 ICL7665SACBAZA* (Note) 7665SACBAZ 0 to 70 8 Ld SOIC (N) (Pb-free) M8.15 ICL7665SACPA 7665SACPA 0 to 70 8 Ld PDIP E8.3 ICL7665SACPAZ (Nore) 7665SACPAZ 0 to 70 8 Ld PDIP** (Pb-free) E8.3 ICL7665SAIBA* 7665SAIBA -40 to 85 8 Ld SOIC (N) M8.
PAGE 3
ICL7665S Absolute Maximum Ratings Thermal Information Supply Voltage (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +18V Output Voltages OUT1 and OUT2 . . . . . . . . . . . . . . . . . -0.3V to 18V (with respect to GND) (Note 2) Output Voltages HYST1 and HYST2 . . . . . . . . . . . . . . -0.3V to +18V (with respect to V+) (Note 2) Input Voltages SET1 and SET2 . . . . . (GND -0.3V) to (V+ V- +0.3V) (Note 2) Maximum Sink Output OUT1 and OUT2 . . . . . . . . . . . . . . . . .
PAGE 4
ICL7665S Electrical Specifications PARAMETER The specifications below are applicable to both the ICL7665S and ICL7665SA. V+ = 5V, TA = 25°C, Test Circuit Figure 7. Unless Otherwise Specified (Continued) SYMBOL Output Leakage Currents of OUT and HYST IOLK TEST CONDITIONS MIN TYP MAX UNITS - 10 200 nA - -10 -100 nA - - 2000 nA - - -500 nA V+ = 2V - 0.2 0.5 V V+ = 5V - 0.1 0.3 V V+ = 15V - 0.06 0.2 V V+ = 2V - -0.15 -0.30 V V+ = 5V - -0.05 -0.
PAGE 5
ICL7665S AC Electrical Specifications PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS - 85 - µs - 90 - µs t SO2D - 55 - µs t SH2D - 55 - µs - 75 - µs - 80 - µs t SO2D - 60 - µs t SH2D - 60 - µs - 0.6 - µs - 0.8 - µs t H1R - 7.5 - µs t H2R - 0.7 - µs - 0.6 - µs - 0.7 - µs t H1F - 4.0 - µs t H2F - 1.
PAGE 6
ICL7665S Typical Performance Curves 2.0 2.0 V+ = 2V VOLTAGE SATURATION (V) VOLTAGE SATURATION (V) V+ = 2V 1.5 V+ = 5V 1.0 V+ = 9V 0.5 V+ = 15V 1.5 1.0 V+ = 5V V+ = 9V 0.5 V+ = 15V 0 0 5 10 15 0 20 5 IOUTOUT1 (mA) FIGURE 1. OUT1 SATURATION VOLTAGE AS A FUNCTION OF OUTPUT CURRENT -16 -12 -8 -4 0 0 TA = 25°C -0.4 V+ = 15V -0.8 -1.2 V+ = 9V -1.6 V+ = 2V V+ = 5V -2.0 -5.0 -4.0 -1.0 0 0 V+ = 15V -2.0 V+ = 9V -3.0 -4.0 V+ = 2V V+ = 5V -5.0 FIGURE 4.
PAGE 7
ICL7665S Detailed Description As shown in the Functional Diagram, the ICL7665S consists of two comparators which compare input voltages on the SET1 and SET2 terminals to an internal 1.3V bandgap reference. The outputs from the two comparators drive open-drain N-channel transistors for OUT1 and OUT2, and open-drain P-channel transistors for HYST1 and HYST2 outputs. Each section, the Undervoltage Detector and the Overvoltage Detector, is independent of the other, although both use the internal 1.3V reference.
PAGE 8
ICL7665S VIN VOUT OFF RP2 RP1 OUT1 R21 V+ SET1 OUT2 R22 SET2 R11 R12 ON VTR2 VNOM VTR1 DETECTOR 2 DETECTOR 1 FIGURE 9B. TRANSFER CHARACTERISTICS FIGURE 9A. CIRCUIT CONFIGURATION FIGURE 9. SIMPLE THRESHOLD DETECTOR OUT VIN ON R31 R32 V+ HYST1 HYST2 R21 R22 SET1 SET2 OUT1 OUT2 OVERVOLTAGE OFF VL2 VU2 R12 FIGURE 10A. CIRCUIT CONFIGURATION VIN VNOM OVERVOLTAGE R11 VL1 VU1 DETECTOR 2 DETECTOR 1 FIGURE 10B. TRANSFER CHARACTERISTICS FIGURE 10.
PAGE 9
ICL7665S Applications VIN Single Supply Fault Monitor RP RP V+ R21 OUT1 R22 OUT2 R32 R31 HYST1 HYST2 SET1 SET2 R11 Figure 12 shows an over/under voltage fault monitor for a single supply. The overvoltage trip point is centered around 5.5V and the undervoltage trip point is centered around 4.5V. Both have some hysteresis to prevent erratic output ON and OFF conditions. The two outputs are connected in a wired OR configuration with a pullup resistor to generate a power OK signal.
PAGE 10
ICL7665S V+ HYST1 22MΩ +5V HYST2 22 MΩ R21 49.9kΩ R11 +15V VSET1 is greater than 1.3V, OUT1 is low, but when VSET1 drops below 1.3V, OUT1 goes high shutting off the ICL7663S. OUT2 is used for low battery warning. When VSET2 is greater than 1.3V, OUT2 is high and the low battery warning is on. When VSET2 drops below 1.3V, OUT2 is low and the low battery warning goes off.
PAGE 11
ICL7665S UNREGULATED DC INPUT 4700µF 7805 5V REGULATOR 470µF BACKUP BATTERY V+ HYST1 5.86kΩ 715kΩ HYST2 22MΩ ICL7665S VSET1 VSET2 OUT1 OUT2 2.2MΩ 130kΩ 1MΩ 1MΩ 1MΩ RESET OR WRITE ENABLE POWER FAIL WARNING FIGURE 15. POWER FAIL WARNING AND POWERUP/POWERDOWN RESET Simple High/Low Temperature Alarm AC Power Fail and Brownout Detector Figure 16 illustrates a simple high/low temperature alarm which uses the ICL7665S with an NPN transistor.
PAGE 12
ICL7665S + 5V TEMPERATURE SENSOR (GENERAL PURPOSE NPN TRANSISTOR) 470kΩ R3 LOW TEMPERATURE LIMIT ADJUST V+ HYST1 27kΩ R4 22kΩ HYST2 ICL7665S VSET1 VSET2 OUT1 OUT2 R6 22MΩ R7 1.5MΩ R2 1MΩ R5 R1 10kΩ HIGH TEMPERATURE LIMIT ADJUST V+ ALARM SIGNAL FOR DRIVING LEDS, BELLS, ETC. 1MΩ FIGURE 16. SIMPLE HIGH/LOW TEMPERATURE ALARM 7805 5V REGULATOR 110VAC 60Hz 5V, 1A 4700µF 20V CENTERED TAPPED TRANS.
PAGE 13
ICL7665S Dual-In-Line Plastic Packages (PDIP) E8.3 (JEDEC MS-001-BA ISSUE D) N 8 LEAD DUAL-IN-LINE PLASTIC PACKAGE E1 INDEX AREA 1 2 3 INCHES N/2 -B- -AD E BASE PLANE -C- A2 SEATING PLANE A L D1 e B1 D1 A1 eC B 0.010 (0.25) M C A B S MILLIMETERS SYMBOL MIN MAX MIN MAX NOTES A - 0.210 - 5.33 4 A1 0.015 - 0.39 - 4 A2 0.115 0.195 2.93 4.95 - B 0.014 0.022 0.356 0.558 - C L B1 0.045 0.070 1.15 1.77 8, 10 eA C 0.008 0.014 0.204 C D 0.355 0.
PAGE 14
ICL7665S Small Outline Plastic Packages (SOIC) M8.15 (JEDEC MS-012-AA ISSUE C) N INDEX AREA 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE H 0.25(0.010) M B M INCHES E SYMBOL -B1 2 3 L SEATING PLANE -A- A D h x 45° -C- e A1 B 0.25(0.010) M C 0.10(0.004) C A M MIN MAX MIN MAX NOTES A 0.0532 0.0688 1.35 1.75 - A1 0.0040 0.0098 0.10 0.25 - B 0.013 0.020 0.33 0.51 9 C 0.0075 0.0098 0.19 0.25 - D 0.1890 0.1968 4.80 5.00 3 E 0.1497 0.1574 3.80 4.