Data Sheet
Data Sheet
©2014
Würth Elektronik eiSos GmbH & Co. KG - REV 0.1
PRELIMINARY
14/ 21
172946001
MagI³C Power Module Product Family
LDHM - LED Step Down High Current Module
P PIN CONFIGURATION
Exposed Pad (EP)
Connect to GND
1 2 3 4 5 6 7
07P
LED+
LED+
DIM
GND
VREF
IADJ
LED-
Top View TO263-7EP
Q DETAILED PIN DESCRIPTION
PIN #
PIN
SYMBOL
TYPE
PIN DESCRIPTION
1,2
LED+
PWR
Supply input and rail connection to the anode of the LED string.
3
DIM
I
Dimming control signal input. Open to enable or apply logic level PWM signal to
control the brightness of the LED string.
4
GND
PWR
Reference point for all stated voltages. Connect to the exposed pad of the
package externally.
5
VREF
I
Internal voltage reference output.
6
IADJ
I
Fine tuning of the LED current by connecting a resistor between this pin and
ground. Connect this pin to ground for factory preset current.
7
LED-
O
The current return pin of the LED string, connect to the cathode of the LED
string.
EP
EP
Exposed
Pad
Exposed Pad – Internally connected to pin 4. Used to dissipate heat during
operation. Must be electrically connected to pin 4 external to package