---
title: "5V Power Connector Info"
url: "https://maker.wiznet.io/forum/9750"
markdown_url: "https://maker.wiznet.io/forum/9750/md"
type: "Forum topic"
category: "Wireless"
author: "HEN"
created: "2013-12-18T12:01:20+09:00"
last_activity: "2017-05-04T08:30:42+09:00"
language: "en"
views: 410
replies: 2
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# 5V Power Connector Info

## Question

Asked by HEN on 2013-12-18 in Wireless.

Hi. Haven’t been able to find info on the 5V dc connector on the EVB board, in the documentation. Questions I have are -

1. Is the center pin positive?

2. What is the voltage range allowed on the 5V input?
   Cheers
   ```
      Herbert
```

## Replies

### Reply 1 by felix, 2013-12-19

Hello HEN,

you can find the schematic of the WizFI220-EVB on the product page ([eucache.wiznet.co.kr/UpLoad_File … -Guide.zip](http://eucache.wiznet.co.kr/UpLoad_Files/ReferenceFiles/HW-Design-Guide.zip)). I also attached the zip-file for you. The center pin is positive.

As you can see there is a MIC5209 LDO voltage regulator embedded on the EVB. This voltage regulator can be powered with ±20 Volts, but it is not recommended to power it with more than +16 Volt. The capacitors that are used at the input pin of the voltage regulator are limited to +16 Volt and could be damaged if they suffer from a higher input voltage. I also attached the datasheet for the MIC5209.

Best regards,
Felix
[mic5209.pdf.zip](https://maker.wiznet.io/forum/legacyFile.asp?path=2JGmzKeBPYLLiv11C5vRjF9QZQ6.zip) (1.38 MB)
[HW-Design-Guide.zip](https://maker.wiznet.io/forum/legacyFile.asp?path=w76i89dyseqatIGtE0Oq4ghXGmk.zip) (1.45 MB)

### Reply 2 by HEN, 2013-12-20

Hi Felix,

```
            thank you very much for the information.  Very helpful.


               Cheers
```

---

Source: https://maker.wiznet.io/forum/9750