CAT4101TV(2010) 데이터 시트보기 (PDF) - ON Semiconductor

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CAT4101TV
(Rev.:2010)

1 A Constant-Current LED Driver with PWM Dimming

ON Semiconductor 

CAT4101

TYPICAL PERFORMANCE CHARACTERISTICS

(VIN = 5 V, VCC = 5 V, VF = 3.5 V, ILED = 1 A (1 LED), CIN = 1 mF, TAMB = 25°C unless otherwise specified.)

1.30

1.30

1.25

1.25

1.20

1.20

1.15

1.15

1.10

3.0

3.5

4.0

4.5

5.0

5.5

INPUT VOLTAGE (V)

Figure 9. RSET Pin Voltage vs. VIN Voltage

1.10

−40

0

40

80

120

TEMPERATURE (°C)

Figure 10. RSET Pin Voltage vs. Temperature

1.2

1.0

0.8

0.6

0.4

0.2

0

0

1

2

3

4

5

RSET (kW)

Figure 11. LED Current vs. RSET Resistor

Figure 12. PWM 200 Hz, 1% Duty Cycle

100

1.4

10

1

100 Hz

0.1

1 kHz 5 kHz 50 kHz

0.1

1

10

100

DUTY CYCLE (%)

Figure 13. LED Current vs. PWM Duty Cycle

1.2

−40°C

1.0

25°C

0.8

85°C

0.6

0.4

3.0

3.5

4.0

4.5

5.0

5.5

INPUT VOLTAGE (V)

Figure 14. EN/PWM Threshold vs. VIN

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