Maxim Integrated Producs ICL7665ACJA, ICL7665ACPA, ICL7665ACSA, ICL7665ACTV, ICL7665AEPA Datasheet

_______________General Description

The ICL7665 warns microprocessors (µPs) of overvolt­age and undervoltage conditions. It draws a typical

operating current of only 3µA. The trip points and hys­teresis of the two voltage detectors are individually pro­grammed via external resistors to any voltage greater
than 1.3V. The ICL7665 will operate from any supply
voltage in the 1.6V to 16V range, while monitoring volt­ages from 1.3V to several hundred volts. The Maxim
ICL7665A is an improved version with a 2%-accurate
V

SET

1

threshold and guaranteed performance over

temperature.
The 3µA quiescent current of the ICL7665 makes it

ideal for voltage monitoring in battery-powered sys­tems. In both battery- and line-powered systems, the
unique combination of a reference, two comparators,
and hysteresis outputs reduces the size and compo­nent count of many circuits.

________________________Applications

µP Voltage Monitoring
Low-Battery Detection
Power-Fail and Brownout Detection
Battery Backup Switching
Power-Supply Fault Monitoring
Over/Undervoltage Protection
High/Low Temperature, Pressure, Voltage Alarms

____________________________Features

♦ µP Over/Undervoltage Warning
♦ Improved Second Source
♦ Dual Comparator with Precision Internal Reference
♦ 3µA Operating Current
♦ 2% Threshold Accuracy (ICL7665A)
♦ 1.6V to 16V Supply Voltage Range
♦ On-Board Hysteresis Outputs
♦ Externally Programmable Trip Points
♦ Monolithic, Low-Power CMOS Design

______________Ordering Information

Ordering Information continued on last page.

ICL7665

Microprocessor Voltage Monitor with

Dual Over/Undervoltage Detection

________________________________________________________________

Maxim Integrated Products

1

1
2
3
4

8
7
6
5

OUT2
SET2
HYST2

GND

SET1

HYST1

OUT1

ICL7665

DIP/SO

TOP VIEW

2

8

4

6

1

7

3

5

ICL7665

V+ (CASE)

HYST2

SET2

OUT2

OUT1

HYST1

SET1

TO-99

GND

V+

_________________Pin Configurations

ICL7665

OUT1

OUT2

SET2

SET1

V+ V

IN2

V

IN1

V+

8

4

1

7

6

3

GND

OVERVOLTAGE

DETECTION

UNDERVOLTAGE

DETECTION

SIMPLE THRESHOLD DETECTOR

NMI

__________Typical Operating Circuit

19-0001; Rev 2; 8/97

PART TEMP. RANGE PIN-PACKAGE

ICL7665CPA 0°C to +70°C 8 Plastic DIP
ICL7665ACPA 0°C to +70°C 8 Plastic DIP
ICL7665BCPA 0°C to +70°C 8 Plastic DIP
ICL7665CSA 0°C to +70°C 8 SO
ICL7665ACSA 0°C to +70°C 8 SO
ICL7665BCSA 0°C to +70°C 8 SO
ICL7665CJA 0°C to +70°C 8 CERDIP
ICL7665ACJA 0°C to +70°C 8 CERDIP
ICL7665BCJA 0°C to +70°C 8 CERDIP

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone].
For small orders, phone [phone] ext. 3468.

ICL7665

Microprocessor Voltage Monitor with
Dual Over/Undervoltage Detection

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V+ = 5V, TA= +25°C, unless otherwise noted.)

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.

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 possi­ble, currents into inputs and/or outputs must be limited to ±0.5mA and voltages must not exceed those defined above.

Supply Voltage (Note 1).........................................-0.3V to +18V

Output Voltages OUT1 and OUT2

(with respect to GND) (Note 1)..........................-0.3V to +18V

Output Voltages HYST1 and HYST2

(with respect to V+) (Note 1) .............................+0.3V to -18V

Input Voltages SET1 and SET2

(Note 1)........................................(GND - 0.3V) to (V+ + 0.3V)

Maximum Sink Output Current

OUT1 and OUT2.............................................................25mA

Maximum Source Output Current

HYST1 and HYST2........................................................-25mA

Continuous Power Dissipation (T

A

= +70°C)

Plastic DIP (derate 9.09mW/°C above +70°C)............727mW

SO (derate 5.88mW/°C above +70°C)........................471mW

CERDIP (derate 8.00mW/°C above +70°C)................640mW

TO-99 (derate 6.67mW/°C above +70°C)...................533mW

Operating Temperature Ranges

ICL7665C_ _.......................................................0°C to +70°C

ICL7665I_ _.....................................................-20°C to +85°C

ICL7665E_ _....................................................-40°C to +85°C

Storage Temperature Range.............................-65°C to +160°C

Lead Temperature (soldering, 10sec).............................+300°C

PARAMETER

SYMBOL CONDITIONS

MIN TYP MAX

UNITS

Operating Supply Voltage V+

ICL7665

TA= +25°C 1.6 16

V

TA = T

MIN

to T

MIN

1.8 16

ICL7665A TA = T

MIN

to T

MIN

2.0 16

ICL7665B

TA= +25°C 1.6 10

Input Trip Voltage V

SET

ICL7665, ICL7665B, TA= +25°C

V

SET1

1.150 1.300 1.450

V

V

SET2

1.200 1.300 1.400

ICL7665A, TA= +25°C

V

SET1

1.275 1.300 1.325

V

SET2

1.225 1.300 1.375

ICL7665A, TA= T

MIN

to T

MAX

V

SET1

1.250 1.300 1.350

V

SET2

1.215 1.300 1.385

V

SET

Tempco 100 ppm/°C

R

OUT1

, R

OUT2

, R

HYST1

, R

HYST2

= 1MΩ 0.004 %/V

Supply Current I+

GND ≤ V

SET1,

V

SET2

≤

V+,
all outputs open
circuit

V+ = 2V 2.5 10

µA

V+ = 9V 2.6 10
V+ = 15V 2.9 15

ICL7665B,
TA= +25°C

V+ = 2V 2.5 10
V+ = 9V 2.6 10

TA = T

MIN

to T

MIN

1.8 10

ICL7665,
TA= +25°C;
ICL7665A,
TA= T

MIN

to T

MAX

Supply Voltage Sensitivity
of V

SET1

, V

SET2

ICL7665

Microprocessor Voltage Monitor with

Dual Over/Undervoltage Detection

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 5V, TA= +25°C, unless otherwise noted.)

PARAMETER

CONDITIONS

MIN TYP MAX

UNITS

Output Leakage Current I

OLK

,

I

HLK

All grades, V

SET

= 0V or

V

SET

≥ 2V, TA= +25°C

OUT1, OUT2 10 200

nA

HYST1, HSYT2 -10 -100
OUT1, OUT2 2000

HYST1, HSYT2 -500

ICL7665B, V+ = 9V,
TA= T

MIN

to T

MAX

OUT1, OUT2 2000
HYST1, HSYT2 -500

V

OUT1

Saturation

Voltage

V

SET1

= 2V,

I

OUT1

= 2mA

ICL7665, ICL7665B: V+ = 2V 0.20 0.50
ICL7665A: V+ = 2V 0.20
All grades: V+ = 5V 0.10 0.30
ICL7665, ICL7665A: V+ = 15V 0.06 0.20
ICL7665B: V+ = 9V 0.06 0.25
All grades: V+ = 2V -0.15 -0.30
All grades: V+ = 5V -0.05 -0.15
ICL7665, ICL665A: V+ = 15V -0.02 -0.10
ICL7665B: V+ = 9V

-0.02 -0.15

V

OUT2

Saturation

Voltage

V

SET2

= 0V,

I

OUT2

= 2mA

All grades: V+ = 2V 0.20 0.50

V

All grades: V+ = 5V 0.15 0.30
ICL7665, ICL665A: V+ = 15V 0.11 0.25
ICL7665B: V+ = 9V 0.11 0.30

V

HYST2

Saturation

Voltage

All grades: V+ = 2V -0.25 -0.80

V

All grades: V+ = 5V -0.43 -1.00
ICL7665: V+ = 15V -0.35 -0.80
ICL7665A: V+ = 15V -0.35 -1.00
ICL7665B: V+ = 9V -0.35 -1.00

I

SET

GND ≤ V

SET

≤ V+

±0.01 ±10 nA

∆V

SET

0.1 mV

V

SET1

–

V

SET2

±5 ±50 mV

±0.1 mV

SYMBOL

V

V

HYST1

Saturation

Voltage

V

V

SET1

= 2V,

I

HYST1

= -0.5mA

ICL7665, ICL7665A,
V+ = 15V,
TA= T

MIN

to T

MAX

V

SET2

= 2V,

I

HYST2

= -0.2mA

V

SET2

= 2V,

I

HYST2

= -0.5mA

V

SET

Input Leakage

Current

R

OUT

, R

HYST

= 1MΩ

R

OUT

, R

HYST

= 1MΩ

R

OUT

= 4.7kΩ, R

HYST

= 20kΩ,

V

OUT

LO = 1% V+, V

OUT

HI = 99% V+

V

SET

Input Change for
Complete Output
Change

Difference in Trip
Voltage

Output/Hysteresis
Difference

ICL7665

Microprocessor Voltage Monitor with
Dual Over/Undervoltage Detection

4 _______________________________________________________________________________________

AC OPERATING CHARACTERISTICS

(V+ = 5V, TA= +25°C, unless otherwise noted.)

V

SET

switched between 1.0V and 1.6V,

R

OUT

= 4.7kΩ, CL= 12pF,

R

HYST

= 20kΩ

µs

1.8t

H2f

Output Fall Times

4.0t

H1f

0.7t

O2f

0.6t

O1f

V

SET

switched between 1.0V and 1.6V,

R

OUT

= 4.7kΩ, CL= 12pF,

R

HYST

= 20kΩ

µs

0.7t

H2r

Output Rise Times

7.5t

H1r

0.8t

O2r

0.6t

O1r

V

SET

switched from 1.6V to 1.0V,

R

OUT

= 4.7kΩ, CL= 12pF,

R

HYST

= 20kΩ

µs

60t

SH2d

Output Delay Time,
Input Going Low

60t

SO2d

80t

SH1d

75t

SO1d

V

SET

switched from 1.0V to 1.6V,

R

OUT

= 4.7kΩ, CL= 12pF,

R

HYST

= 20kΩ

CONDITIONS

µs

55t

SH2d

Output Delay Time,
Input Going High

55t

SO2d

90t

SH1d

85t

SO1d

UNITSMIN TYP MAXSYMBOLPARAMETER

_______________________________________________________Switching Waveforms

INPUT

OUT1

HYST1

OUT2

HYST2

V

SET1,VSET2

t

SO1d

t

SH1d

t

SO2d

t

SH2d

t

SO1d

t

O1f

t

H1r

t

SO2d

t

O2r

t

SH2d

t

H2r

t

SH1d

t

H1f

t

O2f

t

H2f

t

O1r

1.6V

1.0V
V+ (5V)

GND
V+ (5V)

GND

V+ (5V)

GND
V+ (5V)

GND