CAT3604V Datasheet, PDF (6/14 Pages) Catalyst Semiconductor – 4-Channel Quad-Mode™ LED Driver with Open/Short LED Detection

CAT3604V
TYPICAL PERFORMANCE CHARACTERISTICS
(V_IN = 3.6 V, I_OUT = 80 mA (4 LEDs at 20 mA), C_IN = C_OUT = C₁ = C₂ = 1 mF, T_AMB = 25°C unless otherwise specified.)
1.3
12
1.2
1.5x Mode
10
2x
1.1
8
1.0
1.33x, 2x Mode
0.9
6
1.33x
4
1.5x
0.8
0.7
−40
0
40
80
120
TEMPERATURE (°C)
Figure 9. Switching Frequency vs.
Temperature
2
1x
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 10. Output Resistance vs. Input Voltage
4.0
40
3.5
1x Mode
3.0
30
2.5
2.0
20
1.5
1.0
10
0.5
0
0
100
200
300
400
OUTPUT CURRENT (mA)
Figure 11. Foldback Current Limit
0
0
50
100
150
200
250 300
LED PIN VOLTAGE (mV)
Figure 12. LED Current vs. LED Pin Voltage
100
10
1
1
10
100
RSET RESISTANCE (kW)
Figure 13. LED Current vs. RSET Resistance
Figure 14. Line Transient Response
(3.6 V to 4.9 V)
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