Rainbow-electronics MAX6869 Uživatelský manuál stáhnout pdf (Strana 4)

NORMALIZED WATCHDOG TIMEOUT PERIOD

vs. TEMPERATURE

MAX6854 toc04

TEMPERATURE (°C)

NORMALIZED t

603510-15

0.6

0.8

1.0

1.2

1.4

1.6

1.8

0.4

-40 85

10 100 1000

MAXIMUM V

TRANSIENT DURATION

vs. RESET THRESHOLD OVERDRIVE

MAX684 toc05

RESET THRESHOLD OVERDRIVE (mV)

TRANSIENT DURATION (µs)

1000

0.1

100

RESET OCCURS ABOVE THIS LINE

FALLING FROM V

+100mV

NORMALIZED RESET THRESHOLD VOLTAGE

vs. TEMPERATURE

MAX6854 toc06

TEMPERATURE (°C)

NORMALIZED V

603510-15

0.995

1.000

1.005

1.010

0.990

-40 85

TO RESET DELAY

vs. TEMPERATURE

MAX6854 toc07

TEMPERATURE (°C)

(µs)

603510-15

-40 85

= V

+ 100mV TO V

- 100mV

MAX6854–MAX6869

Nanopower µP Supervisory Circuits with

Optional Manual Reset, Watchdog Timer

4 _______________________________________________________________________________________

Typical Operating Characteristics

= +2.5V, T

= +25°C, unless otherwise noted.)

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX6854 toc01

(V)

0.1

1.0

10.0

(µA)

5.04.53.5 4.02.0 2.5 3.01.51.0 5.5

= 2.23V

= +85°C

= +25°C

= -40°C

SUPPLY CURRENT

vs. TEMPERATURE

MAX6854 toc02

TEMPERATURE (°C)

(µA)

603510-15

0.12

0.14

0.16

0.18

0.20

0.22

0.10

-40 85

RESET IS NOT ASSERTED

= 1.575V

= 5.5V

= 2.5V

= 3.3V

= 1.8V

NORMALIZED RESET TIMEOUT PERIOD

vs. TEMPERATURE

MAX6854 toc03

TEMPERATURE (°C)

NORMALIZED t

603510-15

0.99

1.00

1.01

1.02

0.98

-40 85

1 2 3 4 5 6 7 8 9 ... 16 17

MAX6854–MAX6869 1

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