CAT3606 Datasheet, PDF (8/11 Pages) Catalyst Semiconductor – 6-Channel Low Noise Charge Pump White LED Driver

CAT3606
TYPICAL CHARACTERISTICS
(V_IN = 3.6 V, EN = V_IN, ENM = ENS = GND, C_IN = C_OUT = 1 mF, R_SET = 24 kW (20 mA per LED), T_AMB = 25°C, unless otherwise specified.)
VIN
50mV/
div
Input
Current
10mA/
div
VOUT
50mV/
div _{AC coupled}
VIN
50mV/div
Input
Current
10mA/div
VOUT
50mV/div
AC coupled
400 nsec/div
400 nsec/div
Figure 15. Switching Waveforms in 1.5x Mode
Figure 16. Operating Waveforms in 1x Mode
EN
2V/div
EN
2V/div
Input
Current
100mA/
div
Input
Current
100mA/div
VOUT
2V/div
100
10
1
400 msec/div
VOUT
2V/div
Figure 17. Power Up 6 LEDs at 15 mA,
VIN = 3 V (1.5x Mode)
Vin
3.6V to 4.9V
1V/div
Input
Current
5mA/div
VOUT
2V/div
AC coupled
400 msec/div
Figure 18. Power Up 6 LEDs at 15 mA,
VIN = 3.6 V (1x Mode)
0.1
10
100
1000
RSET (kW)
Figure 19. LED Current vs. R_SET
10,000
200 msec/div
Figure 20. Line Transient Response
in 1x Mode
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