EV2358DS-00A データシートの表示（PDF） - Monolithic Power Systems

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EV2358DS-00A

2A, 23V, 370KHz Step-Down Converter Evaluation Board

Monolithic Power Systems 

TM

EV2358DS-00A – 2A, 23V, 370KHz STEP-DOWN CONVERTER EVALUATION BOARD

QUICK START GUIDE

The output voltage of this board is preset to 3.3V. The board is laid out to accommodate most

commonly used inductors and output capacitors.

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

2. Connect the input voltage (4.75V ≤ VIN ≤ 23V) and input ground to the VIN and GND pins,

respectively.

3. To turn on the MP2358, apply an enable voltage VEN to the EN pin. Drive EN higher than 1V to

turn on the MP2358 or lower than 0.4V to turn it off.

4. The output voltage VOUT can be programmed by varying R1. Calculate the new value using the

formula:

R1 = R3 × ( VOUT − 1)

VFB

Where VFB = 0.9V and R3 = 10kΩ.

For example, for VOUT = 2.5V:

R1 = R3 × ( VOUT − 1) = 10kΩ × ( 2.5V − 1) = 17.78kΩ ~ 17.8kΩ

VFB

0.9V

for the closest standard 1% value.

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.

EV2358DS-00A Rev. 1.2

www.MonolithicPower.com

4

1/9/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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