Data Sheet

WLMDU9456001JT / 172946001
MagI
3
C Power Module
LDHM - LED Step Down High Current Module
We-online.com Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
© May 2016 17/35
∂ PGND exposed pad (EP) must be connected to the AGND pin (pin 4) directly.
C
IN1
C
IN2
C
OUT2
C
OUT1
Exposed pad
1
2
234567
RIADJ
VIN
GND
LED+ LED-DIM AGND ISET IFIX
Bottom
GROUND PLANE
PGND
From an EMI reduction standpoint, it is imperative to minimize the di/dt current paths (refer to LED driver module current
loops). Therefore, it is recommended to connect an 2.2 μF capacitor (C
OUT
) across the LED+ pin and LED- pin. This will
minimize the ripple current so that it can reduce radiated EMI.
LED driver module current loops
ON-loop
OFF-loop
LED-
LED+LED+
V
IN
R
sense
C
IN
C
OUT
controller
PGND