CAT3603 Datasheet, PDF (6/11 Pages) Catalyst Semiconductor – 3-Channel LED Driver in 3x3mm Package

CAT3603
TYPICAL CHARACTERISTICS
(VIN = 3.6 V, I_OUT = 60 mA (3 LEDs at 20 mA), C₁ = C₂ = C_IN = C_OUT = 1 mF, T_AMB = 25°C unless otherwise specified.)
VIN
50mV/div
Input
Current
10mA/div
AC Coupled
AC Coupled
VOUT
50mV/div
AC Coupled
500ns/div
VIN
50mV/div
AC Coupled
Input
Current
10mA/div _{AC Coupled}
VOUT
50mV/div
AC Coupled
500ns/div
Figure 14. Switching Waveforms in 1.5x Mode
Figure 15. Operating Waveforms in 1x Mode
EN
2V/div
EN
2V/div
Input
Current
100mA/
div
VOUT
5V/div
500ms/div
Figure 16. Power Up 3 LEDs at 20 mA,
VIN = 3.2 V (1.5x Mode)
100
Input
Current
100mA/
div
VOUT
5V/div
500ms/div
Figure 17. Power Up 3 LEDs at 20 mA,
VIN = 4 V (1x Mode)
VIN
2V/div
10
1
10
100
RSET (kW)
Figure 18. LED Current vs. R_SET
LED
Current
5mA/div
VOUT
5V/div
1,000
200ms/div
Figure 19. Line Transient Response
in 1x Mode
http://onsemi.com
6