CAT3626 Datasheet, PDF (5/16 Pages) Catalyst Semiconductor – 6-Channel LED Driver with I2C Interface

CAT3626
TYPICAL CHARACTERISTICS
(V_IN = 3.6 V, I_OUT = 90 mA (6 LEDs at 15 mA), EN = V_IN, C_IN = C₁ = C₂ = C_OUT = 1 mF, T_AMB = 25°C, unless otherwise specified.)
100
1x Mode
90
15 mA per LED
80
70
60
50 _{20 mA per LED}
1.5x Mode
40
4.2
4.0
3.8
3.6
3.4
3.2
3.0
SUPPLY VOLTAGE (V)
Figure 3. Efficiency vs. Supply Voltage
(6 LEDs)
0.8
100
90
VIN = 4 V (1x mode)
80
70
60
50
VIN = 3.2 V (1.5x mode)
40
0
50
100
150
200
TOTAL LED CURRENT (mA)
Figure 4. Efficiency vs. Total LED Current
(6 LEDS)
0.8
0.6
0.6
0.4
6 LEDs OFF
0.2
0
3.0
3.2
3.4
3.6
3.8
4.0
4.2
SUPPLY VOLTAGE (V)
Figure 5. Quiescent Current vs. Supply
Voltage (1x Mode)
5
4
3
2
6 LEDs OFF
1
0
3.0 3.2
3.4
3.6
3.8
4.0
4.2
SUPPLY VOLTAGE (V)
Figure 7. Quiescent Current vs. Supply
Voltage (1.5x Mode)
0.4
0.2
6 LEDs OFF
0
−40
0
40
80
120
TEMPERATURE (°C)
Figure 6. Quiescent Current vs. Temperature
(1x Mode)
5
4
3
2
1
6 LEDs OFF
0
−40
0
40
80
120
TEMPERATURE (°C)
Figure 8. Quiescent Current vs. Temperature
(1.5x Mode)
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