CAT4004A datasheet(4/11 Pages) ONSEMI

Part #	CAT4004A

Description	Constant Current LED Driver

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Manufacturer	ONSEMI [ON Semiconductor]

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CAT4002A, CAT4004A

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4

TYPICAL PERFORMANCE CHARACTERISTICS

(CAT4002A, VIN = 4 V, VF = 3.3 V, IOUT = 50 mA (2 LEDs at 25 mA), CIN = 1 mF, TAMB = 25°C unless otherwise specified.)

Figure 3. Quiescent Current vs. RSET Input

Voltage

Figure 4. Quiescent Current vs. Input Voltage

(Full Load)

RSET (kW)

INPUT VOLTAGE (V)

60

40

20

0

0.4

0.8

1.2

1.6

2.0

5.5

5.0

4.5

4.0

3.5

3.0

2.5

0.6

0.8

1.0

1.2

1.4

Figure 5. LED Current Change vs. Input

Voltage

Figure 6. LED Current Change vs.

Temperature

INPUT VOLTAGE (V)

TEMPERATURE (°C)

5.5

5.0

4.5

4.0

3.5

3.0

2.5

−1.0

−0.8

−0.4

−0.2

0

0.4

0.6

1.0

80

40

0

−40

−10

−8

−4

−2

2

4

8

10

Figure 7. EN/DIM High Threshold vs. Input

Voltage

Figure 8. LED Current vs. RSET Resistor

INPUT VOLTAGE (V)

RSET (kW)

5.5

5.0

4.5

4.0

3.5

3.0

2.5

2.0

0.4

0.8

1.0

1.4

100

10

1

0

10

20

30

40

−0.6

0.2

0.8

120

−6

0

6

0.6

1.2

−40°C

25°C

80°C

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