ISL6121 Ver la hoja de datos (PDF) - Renesas Electronics

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ISL6121

Single Supply Integrated Current Limiting Controller

Renesas Electronics 

ISL6121

Typical Performance Curves

ON

OFF

ENABLE

FAULT

LATCH-OFF SET

RESET BY

ENABLE

VOUT

CURRENT

REGULATION

SETTLING

TIME (1.4ms)

OVER CURRENT

IOUT

2A CURRENT

LIMIT

12ms CURRENT REGULATION PERIOD

FIGURE 2. OPERATIONAL WAVEFORMS

ENABLE

CL = 0.1F, 10F

VOUT

CL = 100F

VOUT (1V/DIV.)

TIME (200s/DIV.)

FIGURE 4. VOUT SOFT START vs CLOAD

2400

2200

2000

1800

-40oC

25oC

85oC

1600

1.3 1.5 2.0 2.5 3.0 3.5 4.0 4.5 4.8

VOUT (V)

FIGURE 6. CURRENT REGULATION vs VOUT (VIN = 5.0V)

FN9004 Rev 2.00

November 12, 2004

75

70

65

VIN = 2.7V

60

55

VIN = 5V

50

45

VIN = 3.3V

40

35

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

TEMPERATURE (oC)

FIGURE 3. SWITCH RESISTANCE AT 1A

2400

2200

-40oC

2000

25oC

1800

85oC

1600

1.25 1.5

1.75 2.0 2.25 2.5

VOUT (V)

2.75 3.0

3.1

FIGURE 5. CURRENT REGULATION vs VOUT (VIN = 3.3V)

CURRENT REGULATED

LEVEL

NOMINAL CURRENT

TIME (200s /DIV.)

FIGURE 7. OC TO CR SETTLING TIME WAVEFORMS

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