TYPICAL PERFORMANCE CURVES
INTRODUCTION
TYPICAL PERFORMANCE CURVES
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
Vin=9V
Fs = 600kHz
L=10uH, 68mOhm (IHLP2525CZER100M01)
Schottky 5A, 100V (PDS5100HDICT-ND)
COUT = 2x2.2µF
FPWM=25kHz
Load = 9 LEDs, 20mA/channel
VLED = 27.8V, ±0.5V /channel
0.0
0
10
20
30
40
50
60
70
80
90
100
Duty Cycle (%)
Figure 6. Typical System Efficiency vs Duty Cycle (FPWM=25kHz)
Chablis ILED Dimming Linearity (FPWM=25kHz)
2.000%
1.500%
1.000%
0.500%
0.000%
-0.500%
-1.000%
-1.500%
-2.000%
(-) Mismatch @25°C
(+) Mismatch @ 25°C
1
10
100
% Duty cycle
Figure 7. Typical ILED Dimming Linearity (FPWM=25kHz)
34845
Analog Integrated Circuit Device Data
Freescale Semiconductor
12
FREESCALE [ Freescale ]
