LTC1726IS8-5 datasheet(4/12 Pages) LINER

Part #	LTC1726IS8-5

Description	Triple Supply Monitor and uP Supervisor with Adjustable Reset and Watchdog Timer

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC1726

VCC25 Threshold Voltage

vs Temperature

IVCC5 vs Temperature

TYPICAL PERFOR A CE CHARACTERISTICS

TEMPERATURE (

°C)

–60

0

40

100

1726 G04

2.300

2.315

2.330

2.345

2.360

2.375

–40 –20

20

60

80

TEMPERATURE (

°C)

–60

10

11

13

14

15

20

17

–20

20

40

1726 G05

12

18

19

16

–40

0

60

80

100

VCC5 = 5V

VCC3 = 3.3V

IVCC3 vs Temperature (LTC1726-5)

TEMPERATURE (

°C)

–60

0.5

0.6

0.8

0.9

1.0

1.5

1.2

–20

20

40

1726 G06

0.7

1.3

1.4

1.1

–40

0

60

80

100

VCC5 = 5V

VCC3 = 3.3V

IVCC25 vs Temperature

(LTC1726-2.5)

IVCC3 vs Temperature

(LTC1726-2.5)

Typical Transient Duration

vs Comparator Overdrive

TEMPERATURE (

°C)

–60

0.5

0.6

0.8

0.9

1.0

1.5

1.2

–20

20

40

1726 G07

0.7

1.3

1.4

1.1

–40

0

60

80

100

VCC3 = 3.3V

VCC25 = 2.5V

TEMPERATURE (

°C)

–60

10

11

13

14

15

20

17

–20

20

40

1726 G08

12

18

19

16

–40

0

60

80

100

VCC3 = 3.3V

VCC25 = 2.5V

RESET COMPARATOR OVERDRIVE VOLTAGE (% OF VCC)

0.1

400

500

600

700

1

10

100

1726 G09

300

200

100

0

RESET OCCURS

ABOVE CURVE

TA = 25°C

Watchdog Time-Out Period

vs Temperature

Reset Pulse Width vs Temperature

TEMPERATURE (

°C)

–60 –40

34

36

38

60

80

1726 G10

32

30

–20

0

20

40

100

28

26

40

CWT = 1500pF

TEMPERATURE (

°C)

–60

4.0

4.2

4.6

4.8

5.0

6.0

5.4

–20

20

40

1726 G11

4.4

5.6

5.8

5.2

–40

0

60

80

100

CRT = 1500pF

VCCA Input Current

vs Input Voltage

INPUT VOLTAGE (V)

0.80 0.85

0.95

1.05

1.15

0

1.0

1.20

1726 G14

–1.0

– 2.0

– 0.5

–1.5

0.90

1

1.10

2.0

0.5

1.5

TA = 25°C

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LTC1726IS8-5 Datasheet(PDF) 4 Page - Linear Technology

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