# advice on PS design for XBEE3 CAT-M

**URL:** https://forums.digi.com/t/advice-on-ps-design-for-xbee3-cat-m/20233
**Category:** XBee - Cellular
**Tags:** cellular, xbee3, lte-m
**Created:** [February 5, 2019, 12:40pm UTC](https://forums.digi.com/t/advice-on-ps-design-for-xbee3-cat-m/20233 "2019-02-05T12:40:51Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![davidmundie](https://avatars.discourse-cdn.com/v4/letter/d/8797f3/32.png) [@davidmundie](https://forums.digi.com/u/davidmundie)
#### Post date: [February 5, 2019, 12:40pm UTC](https://forums.digi.com/t/advice-on-ps-design-for-xbee3-cat-m/20233/1 "2019-02-05T12:40:51Z")

</div>

I am looking at the CAT-M module. In the past I have just shut down and powered down the cellular modem to save power but for CAT M the built in LTE PSM would be better I think. However that requires that the power supply regulate from 10ua to 750ma which is a challenge. Do you guys have any suggestions.