CAT3612 Datasheet, PDF (7/13 Pages) Catalyst Semiconductor – Programmable 300mA Camera Flash LED Driver

CAT3612
TYPICAL CHARACTERISTICS
(VIN = 3.6 V, I_OUT = 100 mA, C_IN = C_OUT = 2.2 mF, C₁ = C₂ = 1 mF, T_AMB = 25°C unless otherwise specified.)
Figure 21. Enable and Output Current
Dimming Waveforms
200
160
VIN = 3.5 V
120
80
VIN = 4.2 V
40
0
−40
0
40
80
120
TEMPERATURE (°C)
Figure 23. Enable High Minimum Program
Time vs. Temperature
1.2
1.0
0.8
0.6
0.4
0.2
0
−40
0
40
80
120
TEMPERATURE (°C)
Figure 25. Enable Voltage Threshold vs.
Temperature
Figure 22. Line Transient Response
(3.6 V to 5.5 V) 1x Mode
200
VIN = 3.5 V
160
120
VIN = 4.2 V
80
40
0
−40
0
40
80
120
TEMPERATURE (°C)
Figure 24. Enable Low Minimum Program
Time vs. Temperature
4.0
3.5
3.0
1x Mode
2.5
LED Off
2.0
1.5
1.0
0.5
0
0
100
200
300
400
500
OUTPUT CURRENT (mA)
Figure 26. Foldback Current Limit
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