CAT4101
TYPICAL PERFORMANCE CHARACTERISTICS
(V IN = 5 V, V CC = 5 V, V F = 3.5 V, I LED = 1 A (1 LED), C IN = 1 m F, T AMB = 25 ° C unless otherwise specified.)
1.30
1.25
1.20
1.15
1.30
1.25
1.20
1.15
1.10
3.0
3.5
4.0
4.5
5.0
5.5
1.10
? 40
0
40
80
120
1.2
1.0
0.8
0.6
0.4
0.2
INPUT VOLTAGE (V)
Figure 9. RSET Pin Voltage vs. VIN Voltage
TEMPERATURE ( ° C)
Figure 10. RSET Pin Voltage vs. Temperature
0
0
1
2
3
4
5
RSET (k W )
100
Figure 11. LED Current vs. RSET Resistor
1.4
1.2
Figure 12. PWM 200 Hz, 1% Duty Cycle
10
1
100 Hz
1.0
0.8
0.6
? 40 ° C
25 ° C
85 ° C
0.1
0.1
1 kHz
5 kHz
1
50 kHz
10
100
0.4
3.0
3.5
4.0
4.5
5.0
5.5
DUTY CYCLE (%)
Figure 13. LED Current vs. PWM Duty Cycle
http://onsemi.com
5
INPUT VOLTAGE (V)
Figure 14. EN/PWM Threshold vs. VIN
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