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A Product Lin of
Dio odes Incorpor rated
ZX LD137 1
Typical Characteris stics – PWM M/Thermal Dimming
1500
T A = 25°C
1250
V IN = V AUX = 24V
L = 33μH, R S =150m Ω
1000
750
500
250
0
f PWM = 100Hz z
I LED
0
10
20 0
30
4 40
50
60 70
80
90
100
PWM DUTY CYCLE (%)
LED Current vs. PWM Duty Cycle
s. PW
I LED vs Time - WM Pin Trans sient Respon nse
100%
80%
60%
40%
20%
0%
0
250 0
50 00
750
1000
1250
T A ADJ PIN VOLTAGE ( (mV)
LED Current Dimming Factor vs s. T ADJ Voltage
ZXLD1371
Document number r: DS35436 Rev. 1 - 2
ww ww.diodes.com
9 of 42
Febru uary 2012
? Diodes Incorporated
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