Rainbow-electronics MAX6869 Manual do Utilizador descarregar pdf (Página 5)

MAX6854–MAX6869

Nanopower µP Supervisory Circuits with

Optional Manual Reset, Watchdog Timer

_______________________________________________________________________________________ 5

OUTPUT LOW VOLTAGE

vs. SINK CURRENT

MAX6854 toc08

SINK

(µA)

(V)

4000300020001000

0.05

0.10

0.15

0.20

0.25

0.30

0 5000

= 1.8V

= 3.3V

= 2.5V

OUTPUT HIGH VOLTAGE

vs. SOURCE CURRENT

MAX6854 toc09

SOURCE

(µA)

OUTPUT HIGH VOLTAGE (V

- V

) (V)

800600400200

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

01000

= 1.8V

= 3.3V

= 2.5V

SUPPLY CURRENT vs. WATCHDOG

SWITCHING FREQUENCY

MAX6854 toc10

WATCHDOG SWITCHING FREQUENCY (Hz)

SUPPLY CURRENT (µA)

1M100k10k1k100

100

0.1

10 10M

= 2.5V

TO RESET DELAY

MAX6854 toc11

10µs/div

200mV/div

1.7V

1.5V

RESET

1V/div

= 1.575V

MANUAL RESET DELAY

MAX6854 toc12

200ns/div

1V/div

RESET

1V/div

MRD

Typical Operating Characteristics (continued)

= +2.5V, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 ... 16 17

MAX6854–MAX6869 1

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