EV28115DQ-00B – 4A, 5.5V, SYNCHRONOUS STEP-DOWN REGULATOR EV BOARD

NOTICE:

The information in this document is subject to change without notice. Users should warrant and guarantee that third

party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not

assume any legal responsibility for any said applications.

EV28115DQ-00B Rev. 1.0

www.MonolithicPower.com

4

10/12/2009

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QUICK START GUIDE

1. Connect the positive and negative terminals of the load to the VOUT and GND pins,

respectively.

2. Preset the power supply output to 3.3V-6.0V, then turn it off.

3. Connect the positive and negative terminals of the power supply output to the VIN and GND

pins, respectively.

4. Turn the power supply on. The EV28115DQ board will automatically startup.

5. To use the Enable function, apply a digital input to the EN pin. Drive EN higher than 1.6V to turn

on the regulator, drive EN less than 0.4V to turn it off.

section in the device datasheet to select the proper value of R1, R2, inductor and output

capacitor values when output voltage is changed.