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