200mA/250mA/300mA Current-Limit Switches

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3

QUIESCENT SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.5

5.0

4.0

4.5

3.0

3.5

2.5

10

20

30

40

50

60

70

80

90

100

0

2.0

SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

10

-15

20

40

60

80

100

120

0

-40

85

LATCH-OFF CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

10

-15

1

2

3

4

5

6

7

8

9

10

11

12

13

15

14

0

-40

85

100

10

0.001

-40

85

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

0.01

0.1

1

TEMPERATURE (

°C)

60

35

10

-15

10

-40

85

1

0.1

0.01

0.001

0.0001

SHUTDOWN LEAKAGE CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

10

-15

LATCH-OFF LEAKAGE CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

10

-15

0.001

0.01

0.1

1

10

100

0.0001

-40

85

Typical Operating Characteristics

Note 1: All parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation.

Note 2: Latch-off current does not include the current flowing into FLAG.

Note 3: The on time is defined as the time taken for the current through the switch to go from 0mA to full load. The off-time is defined

as the time taken for the current through the switch to go from full load to 0mA.

Note 4: Retry time is typically 7 times the blanking time.

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Blanking Time

Overcurrent fault (Figures 2, 3)

14

60

ms

Short-Circuit Current-Limit

Response Time

OUT

5µs

Retry Time (Note 4)

MAX4790/MAX4792/MAX4794 (Figure 2)

98

420

ms