CAT4004
TYPICAL PERFORMANCE CHARACTERISTICS
(V IN = 4 V, V F = 3.3 V, I OUT = 80 mA (4 LEDs at 20 mA), C IN = 1 m F, T AMB = 25 ° C unless otherwise specified.)
0.7
0.6
0.5
0.4
0.3
0.7
0.6
0.5
0.4
0.3
0.2
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0.2
? 40
0
40
80
120
40
30
20
10
INPUT VOLTAGE (V)
Figure 8. RSET Pin Voltage vs. Input Voltage
40
30
20
10
TEMPERATURE ( ° C)
Figure 9. RSET Pin Voltage vs. Temperature
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
0
50
100
150
200
250
300
LED PIN VOLTAGE (V)
Figure 10. LED Current vs. LED Pin Voltage
100
90
80
70
60
LED PIN VOLTAGE (mV)
Figure 11. Dropout Characteristics
50
5.0
4.5
4.0
3.5
3.0
2.5
2.0
INPUT VOLTAGE (V)
Figure 12. Efficiency vs. Input Voltage
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