Datasheet

Data Sheet
©2014
Würth Elektronik eiSos GmbH & Co. KG - REV 0.1
PRELIMINARY
4/ 21
172946001
MagI³C Power Module Product Family
LDHM - LED Step Down High Current Module
L ELECTRICAL SPECIFICATIONS
Limits in standard type are for TJ = 25 °C unless otherwise stated; limits in boldface type apply over the operating junction temperature range T
J
of -40 °C to 125 °C.
Minimum and maximum limits are specified through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T
J
= 25 °C, and are
provided for reference purposes only. Unless otherwise stated the following conditions apply: V
IN
=48 V, I
LED
= 350 mA. V
IN
is the voltage applied across LED+ and GND.
I
IN
is the input current flowing into the LED+ node. I
LED
is a LED current flowing into the LED- pin. V
LED
is the voltage applied across LED+ and LED-. V
DIM
is the voltage
applied across the DIM pin to ground. Resistor R
IADJ
connect from I
ADJ
pin to ground. Resistor R
VREF
connect from VREF pin to ground.
SYMBOL
PARAMETER
CONDITIONS
MIN
(3)
TYP
(4)
MAX
(3)
UNIT
Specifications regarding LED/input current
I
IN
Input current
2.1
2.65
3.0
mA
I
LED
LED current
V
LED
= 24V;
R
IADJ
= 0Ω;
R
VREF
= open;
T
J
= -40°C to 125°C
337
350
371
mA
I
LED-60V
LED current V
IN
= 60V
V
IN
= 60V;
V
LED
= 36V;
R
IADJ
= 0Ω;
R
VREF
= open;
T
J
= -40°C to 125°C
338
350
374
mA
I
LED-ADJ450
Adjustment LED current
V
LED
= 24V;
R
IADJ
= 0Ω;
R
VREF
= 10.5kΩ;
T
J
= -40°C to 125°C
437
450
483
mA
I
LED-ADJ300
Adjustment LED current
V
LED
= 24V;
R
IADJ
= 500Ω;
R
VREF
= open;
T
J
= -40°C to 125°C
282
300
316
mA
I
LED-SHORT
LED short circuit current
V
IN
= 60V
V
LED
= 0V;
V
IN
= 60V;
DIM = open
800
920
1020
mA
I
LED-LEAK
“LED-“ pin leakage
current
V
LED
= 0V;
V
IN
= operating max;
DIM = 0V
1.2
µA
Specifications regarding PWM Dimming
V
DIM
DIM pin threshold
V
DIM
increasing
1.0
1.3
V
V
DIM-HYS
DIM pin hysteresis
0.25
V
Specifications regarding to the system
f
SW
Switching frequency
0.72
0.8
0.92
MHz
NOTES
(1)
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is
intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
(2)
The human body model is a 100pF capacitor discharged through a 1.5 kΩ resistor into each pin. The Pin 6 ( IADJ pin) pass ± 1 kV.Test method is per JESD22-AI14S.
(3)
Min and Max limits are 100 % production tested at 25 °C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality
Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(4)
Typical numbers are at 25 °C and represent the most likely parametric norm.
(5)
θ
JA
measured on a 43.3 mm x 76.2 mm four layer board, with 35 µm copper , thirty five 0.3 mm thermal vias, no air flow, and 1 W power dissipation.
(6)
JEDEC J-STD020