WPMDB1600362Q / 171060302

MagI

VDRM

– Variable Step Down Regulator Module

We-online.com

Würth Elektronik eiSos GmbH & Co. KG

– Preliminary Data Sheet REV 0.1

© Mai 2015

9/29

NOTES

(1) 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.

(2) Typical numbers are valid at 25°C ambient temperature and represent statistically the utmost probability assuming the

Gaussian distribution.

(3) Depending on heat sink design, number of PCB layers, copper thickness and air flow.

(4) Measured on a 100 x 100mm two layer board, with 35µm (1 ounce) copper, no air flow

(5) The junction-to-top characterization parameter,

(6) The junction-to-board characterization parameter,

(7) The stated limit of the set-point voltage tolerance includes the tolerance of both the internal voltage reference and the

internal adjustment resistor. The overall output voltage tolerance is affected by the tolerance of the external RSET

resistor.

(8) The industry standard for comparison of the output voltage ripple between switching regulators or modules requires a

10µF ceramic (sometimes additional 1µF ceramic in parallel) at the point of load where the voltage measurement is

done using an oscilloscope with its probe and probe jack for low voltage/high frequency (low impedance) measurement.

The oscilloscopes bandwidth is limited at 20MHz.

(9) A minimum of 47µF of ceramic capacitance is required across the input for proper operation. Locate the capacitor

(10) The amount of required output capacitance varies depending on the output voltage. The amount of required

capacitance must include at least 47µF of ceramic capacitance. Locate the capacitance close to the device. Adding

additional capacitance close to the load improves the response of the regulator to load transients.

(11) When using both ceramic and non-ceramic output capacitance, the combined maximum must not exceed 1200µF.