Data Sheet

GAPTEC-Electronic GmbH & Co. KG
[e-mail] – www.gaptec-electronic.com
Page 3 of 5
LEDD10_24 – Rev. 2016-1.0
Specifications subject to change without notice.
LEDD10_24 Series
Constant current power LED driver - Wide Input - Isolated & Regulated
PWM dimming control
Recommended AC input circuit
For PWM dimming signals with a certain frequency, the output current of
the driver is related to the duty ratio of PWM signal. Refer to the
formula for the calculation method:
Note: The formula is for reference only; and deviation of output current
may exist due to various loads. The min. conducted time of PWM signal
shall not be less than 0.8ms, or the product will be in abnormal operation;
in case of low voice from the driver during PWM dimming, it is normal
since the PWM dimming frequency is within the auditory frequency range
of human ears (20Hz-20KHz in general). To prevent seeing flash of the
LED by human eyes, it is suggested to set the PWM dimming frequency
between 100-200Hz.
Note: Add circuit ①1 may let the ESD level of PWM-control pin reach to ±6KV.
EMC solution-recommended circuit
Components Specifications
Tvs SMC51A,1500W①(ON)
L1 CD53-82µH①(CEAIYA)
C1 470µF/100V (NCC)
C2 225K/50V 1210 X7R
(TORCH)
C3 104K/50V 0805 X7R
(TORCH)
C4 105K/50V 1210 X7R
(TORCH)
C5 102K/2000V 1210 (TDK)
①choose or no①
C6 470pF/100V 0805 (TORCH)
R1 680Ω 0805 (can be
replaced by inductance or
magnetic bead)
Components Specifications
C1 X1 Safety capacitor,
0.1µF /300VAC (QIYA)
C2 100µF /63V Electrolytic ca-
pacitor, 10×16 (Flat surface)
NCC
D1, D2, D3,
D4
Rectifier diode
1N4007 1A/1000V
D0-41(PANJIT)
LEDD10_24-xxx
LEDD10_24-xxx