+3.3V/+5V, 8-Channel Relay Drivers with Fast

Recovery Time and Power-Save Mode

6

_______________________________________________________________________________________

OUT_ TURN-ON DELAY TIME

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.1

4.7

4.3

3.9

3.5

3.1

2.7

40

60

80

100

120

140

20

2.3

5.5

OUT_ TURN-OFF DELAY TIME

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.1

4.7

4.3

3.9

3.5

3.1

2.7

600

800

1000

1200

1400

1600

400

2.3

5.5

INPUT-LOGIC THRESHOLD

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.1

4.7

3.9

4.3

3.1

3.5

2.7

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

2.1

1.0

2.3

5.5

BACK EMF CLAMPING WITH

MAX4822-25 toc13

100

µs/div

0V

0V

CS

5V/div

VOUT

2V/div

POWER-SAVE DELAY TIME

vs. CAPACITANCE

CAPACITANCE (nF)

800

600

200

400

5

10

15

20

30

25

35

40

0

0

1000

POWER-SAVE DELAY TIME

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.1

4.7

3.9

4.3

3.1

3.5

2.7

3.55

3.60

3.65

3.70

3.75

3.80

3.85

3.90

3.95

4.00

3.50

2.3

5.5

µF

0.3

0.4

0.6

0.5

0.7

0.8

0

100

50

150

200

250

300

OUTPUT VOLTAGE vs. OUTPUT CURRENT

IN POWER-SAVE MODE

(PSAVE REGISTER = 111)

OUTPUT CURRENT (mA)

Typical Operating Characteristics (continued)