LTC693I Просмотр технического описания (PDF) - Linear Technology

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LTC693I

Microprocessor Supervisory Circuits

Linear Technology 

LTC692/LTC693

TYPICAL PERFOR A CE CHARACTERISTICS

VOUT vs IOUT

5.00

4.95

4.90

SLOPE = 5Ω

4.85

VCC = 5V

VBATT = 2.8V

TA = 25°C

4.80

4.75

0

10

20

30

40

50

LOAD CURRENT (mA)

LTC692/3 • TPC01

VOUT vs IOUT

2.80

2.78

SLOPE = 125Ω

2.76

VCC = 0V

VBATT = 2.8V

TA = 25°C

2.74

2.72

0

100 200 300 400 500

LOAD CURRENT (µA)

LTC692/3 • TPC02

Power Failure Input Threshold

vs Temperature

1.308

1.306

VCC = 5V

1.304

1.302

1.300

1.298

1.296

1.294

–50 –25

0 25 50 75 100 125

TEMPERATURE (°C)

LTC692/3 • TPC03

Reset Active Time vs

Temperature

232

VCC = 5V

224

216

208

200

192

184

–50 –25

0 25 50 75 100 125

TEMPERATURE (°C)

LTC692/3 • TPC04

Reset Voltage Threshold

vs Temperature

4.41

4.40

4.39

4.38

4.37

4.36

4.35

–50 –25

0 25 50 75 100 125

TEMPERATURE (°C)

LTC692/3 • TPC05

Power Fail Comparator

Response Time

6

5

VCC = 5V

TA = 25°C

4

3

VPFI +

2

1.3V

PFO

–

30pF

1

0

1.305V

1.285V

VPFI = 20mV STEP

01 2 34 567 8

TIME (µs)

LTC692/3 • TPC06

Power Fail Comparator

Response Time

6

5

VCC = 5V

TA = 25°C

4

3

2

VPFI +

1

1.3V

PFO

–

30pF

0

Power Fail Comparator Response

Time with Pull-Up Resistor

6

5

VCC = 5V

TA = 25°C

4

3

2

5V

1

VPFI +

10k

0

1.3V

PFO

–

30pF

1.315V

1.295V

VPFI = 20mV STEP

0 20 40 60 80 100 120 140 160 180

TIME (µs)

LTC692/3 • TPC07

1.315V

1.295V

VPFI = 20mV STEP

0 2 4 6 8 10 12 14 16 18

TIME (µs)

LTC692/3 • TPC08

5

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