Datasheet

Data Sheet
©2013
Würth Elektronik eiSos GmbH & Co. KG - REV 0.2
PRELIMINARY
18/ 25
171032401/WPMDH1302401J
MagI³C Power Module Product Family
VDRM - Variable Step Down Regulator Module
L PIN CONFIGURATION
RON
VIN
EN
AGND
SS FB
VOUT
1 2 3 4 5
6
7
6 7
Exposed Pad = PGND
Connect to AGND
Top View 7 PIN PFM
M DETAILED PIN DESCRIPTION
PIN #
PIN
SYMBOL
TYPE
PIN DESCRIPTION
1
V
IN
PWR
The supply input pin is a terminal for unregulated input voltage source. It is
required to use a filtering capacitance nearby input voltage pin and PGND.
2
R
ON
I
An external resistor from V
IN
to R
ON
pin sets the on-time and frequency of the
application. The value range of the resistor is from 100kΩ to 700kΩ.
3
EN
I
The Enable Input Pin is connected to the precision enable comparator and the
rising threshold is at 1.18V. Maximum recommended input level is 6.5V.
4
AGND
PWR
The analog ground pin is for all stated voltages the reference point and must be
connected externally to PGND.
5
SS
I
For the soft-start function there is an internal 8μA current source which charges
an external capacitor to generate the soft-start.
6
FB
I
The feedback pin is internally connected to the regulation amplifier, the over-
voltage and the short-circuit comparators. The regulation reference point is 0.8V
at this input pin. Connect the feedback resistor divider between the output and
AGND to set up the output voltage.
7
V
OUT
O
The output voltage pin is connected to the internal inductor. For the best stability
and operation connect the output capacitor between this pin and PGND.
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