Datasheet CAT4201 (ON Semiconductor) - 4
| 制造商 | ON Semiconductor |
| 描述 | 350 mA High Efficiency Step Down LED Driver |
| 页数 / 页 | 13 / 4 — CAT4201. TYPICAL OPERATION CHARACTERISTICS. Figure 8. Switching Frequency … |
| 文件格式/大小 | PDF / 201 Kb |
| 文件语言 | 英语 |
CAT4201. TYPICAL OPERATION CHARACTERISTICS. Figure 8. Switching Frequency vs. Input. Figure 9. Switching Frequency vs. Input
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CAT4201 TYPICAL OPERATION CHARACTERISTICS
(VIN = 13 V, ILED = 300 mA, L = 22 mH, C1 = 4.7 mF, C2 = 10 mF, TAMB = 25°C unless otherwise specified) 500 700 600 150 mA 400 150 mA 500 300 400 300 mA 300 mA 300 200 200 100 100 SWITCHING FREQUENCY (kHz) SWITCHING FREQUENCY (kHz) 0 0 8 12 16 20 24 28 8 12 16 20 24 28 INPUT VOLTAGE (V) INPUT VOLTAGE (V)
Figure 8. Switching Frequency vs. Input Figure 9. Switching Frequency vs. Input Voltage (1 LED) Voltage (2 LEDs)
500 2.0 VIN = 13 V 1.6 ) 400 150 mA W 1.2 ANCE ( 300 0.8 300 mA 200 SW RESIST 0.4 SWITCHING FREQUENCY (kHz) 100 0 −40 0 40 80 120 8 10 12 14 16 18 20 22 24 TEMPERATURE (°C) INPUT VOLTAGE (V)
Figure 10. Switching Frequency vs. Figure 11. Switch ON Resistance vs. Input Temperature Voltage
100 100 95 95 150 mA 90 90 300 mA 85 150 mA 85 80 300 mA 80 EFFICIENCY (%) EFFICIENCY (%) 75 75 70 70 8 10 12 14 16 18 20 22 24 8 10 12 14 16 18 20 22 24 INPUT VOLTAGE (V) INPUT VOLTAGE (V)
Figure 12. Efficiency vs. Input Voltage (1 LED) Figure 13. Efficiency vs. Input Voltage (2 LEDs) www.onsemi.com 4
(VIN = 13 V, ILED = 300 mA, L = 22 mH, C1 = 4.7 mF, C2 = 10 mF, TAMB = 25°C unless otherwise specified) 500 700 600 150 mA 400 150 mA 500 300 400 300 mA 300 mA 300 200 200 100 100 SWITCHING FREQUENCY (kHz) SWITCHING FREQUENCY (kHz) 0 0 8 12 16 20 24 28 8 12 16 20 24 28 INPUT VOLTAGE (V) INPUT VOLTAGE (V)
Figure 8. Switching Frequency vs. Input Figure 9. Switching Frequency vs. Input Voltage (1 LED) Voltage (2 LEDs)
500 2.0 VIN = 13 V 1.6 ) 400 150 mA W 1.2 ANCE ( 300 0.8 300 mA 200 SW RESIST 0.4 SWITCHING FREQUENCY (kHz) 100 0 −40 0 40 80 120 8 10 12 14 16 18 20 22 24 TEMPERATURE (°C) INPUT VOLTAGE (V)
Figure 10. Switching Frequency vs. Figure 11. Switch ON Resistance vs. Input Temperature Voltage
100 100 95 95 150 mA 90 90 300 mA 85 150 mA 85 80 300 mA 80 EFFICIENCY (%) EFFICIENCY (%) 75 75 70 70 8 10 12 14 16 18 20 22 24 8 10 12 14 16 18 20 22 24 INPUT VOLTAGE (V) INPUT VOLTAGE (V)
Figure 12. Efficiency vs. Input Voltage (1 LED) Figure 13. Efficiency vs. Input Voltage (2 LEDs) www.onsemi.com 4