EV2316-D-00A - 3A, 19V, SYNC STEP-DOWN SWITCHER

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 between 4V and 19V, and then turn off the power supply.

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 board will automatically start up.

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 or less than 0.4V to turn it off.

LAYOUT RECOMMENDATION OF MP2316

Proper layout of the switching power supplies is very important, and sometimes critical for proper

function. Poor layout design can result in poor line or load regulation and stability issues. Please follow

these guidelines and take Page 5 as reference:

1. The high current paths (GND, IN and SW) should be placed very close to the device with short,

direct and wide traces.

2. The input capacitor needs to be as close as possible to the IN and GND pins.

3. The Mode/Frequency circuit should be placed closed to the part.

4. The external feedback resistors should be placed next to the FB pin.

5. Keep the switching node SW short and away from the feedback network.

In order to have better performances, it is better to use four layer boards. The inner 1 and 2 layers

are Ground.

NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.

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.

EV2316-D-00A Rev.1.0

www.MonolithicPower.com

9

4/10/2014

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2014 MPS. All Rights Reserved.