Data Sheet

Data Sheet
©2014
Würth Elektronik eiSos GmbH & Co. KG - REV 0.1
PRELIMINARY
8/ 21
172946001
MagI³C Power Module Product Family
LDHM - LED Step Down High Current Module
TYPICAL PERFORMANCE CURVES
If not otherwise specified, the following conditions apply: V
IN
= 28 V; C
IN
= 2.2 µF 100 V X7R Ceramic capacitor for driving 5-13 power LEDs, I
LED
= 350 mA; Single LED forward
voltage used is 3.2 V; T
AMB
= 25°C
10050
19D
Ratio: LED Current over Dimming Duty
LED Current (%)
Dimming Duty Ratio (%)
00 10 20 30 40 60 70 80 90
0
10
20
30
40
50
60
70
80
90
100
11LED (VIN = 60V)
8LED (VIN = 48V)
6LED (VIN = 36V)
20D
Ratio: LED Current over Dimming Duty
LED Current (%)
Dimming Duty Ratio (%)
0.0 0.2 0.4 0.6 0.8 1.0
0.0
0.2
0.4
0.6
0.8
1.0
11LED (VIN = 60V)
8LED (VIN = 48V)
6LED (VIN = 36V)
21D
Junction Temperature; V
IN
(800kHz)
Frequency Deviation (%)
Input Voltage (V)
20 25 30 35 40 45 50 55 60
-3
-2
-1
0
1
2
3
25°C
-40°C
125°C
22D
LED Current with PWM Dimming;
Dimming Pulse = 16µs
4 μs/DIV
V
DIM
(2V/DIV)
I
LED
(200mA/DIV)
23D
LED Current with PWM Dimming;
V
DIM
Rising
2 μs/DIV
V
DIM
(2V/DIV)
I
LED
(200mA/DIV)
24D
LED Current with PWM Dimming;
V
DIM
Falling
2 μs/DIV
I
LED
(200mA/DIV)
V
DIM
(2V/DIV)