CAT3603 datasheet(5/11 Pages) ONSEMI

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CAT3603

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TYPICAL CHARACTERISTICS

(VIN = 3.6 V, IOUT = 60 mA (3 LEDs at 20 mA), C1 = C2 = CIN = COUT = 1 mF, TAMB = 25°C unless otherwise specified.)

Figure 8. LED Current Change vs. Input

Voltage

Figure 9. LED Current Change vs.

Temperature

INPUT VOLTAGE (V)

TEMPERATURE (°C)

4.2

4.0

3.8

3.6

3.4

3.2

3.0

−5.0

−4.0

−3.0

−2.0

1.0

3.0

5.0

120

−40

−5.0

−4.0

−2.0

−1.0

1.0

2.0

3.0

5.0

Figure 10. Switching Frequency vs. Input

Voltage

Figure 11. Switching Frequency vs.

Temperature

INPUT VOLTAGE (V)

TEMPERATURE (°C)

4.2

4.0

3.8

3.6

3.4

3.2

3.0

0.7

0.8

0.9

1.0

1.1

1.2

1.3

120

−40

0.7

0.8

0.9

1.0

1.1

1.2

1.3

Figure 12. Output Resistance vs. Input Voltage

(1x Mode)

Figure 13. Output Resistance vs. Input Voltage

(1.5x Mode)

INPUT VOLTAGE (V)

4.2

4.0

3.8

3.6

3.4

3.2

3.0

4.2

4.0

3.8

3.6

3.4

3.2

3.0

−1.0

2.0

4.0

1x Mode

1.5x Mode

−3.0

4.0

VIN = 4 V

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