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U321 on a board, in 3D

U321

Youen

-40℃~+85℃ 12V 40kHz~60kHz 650V Buck、Buck-Boost Non-Isolated Over Voltage Protection、Under Voltage Protection、Over Current Protection、Soft Start、Over Temperature Protection、Constant Voltage (CV) SOP-8 AC-DC Controllers and Regulators ROHS

Extended
DatasheetJLCPCBLCSCyouen/U321
Category
DC DC Converters
Package
SOP-8
Pins
8

Overview

The U321 is a DC DC Converter made by Youen in a SOP-8 package with 8 pins. -40℃~+85℃ 12V 40kHz~60kHz 650V Buck、Buck-Boost Non-Isolated Over Voltage Protection、Under Voltage Protection、Over Current Protection、Soft Start、Over Temperature Protection、Constant Voltage (CV) SOP-8 AC-DC Controllers and Regulators ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:U322, from EasyEDA) and its footprint (Package_SO:SOP-8_3.76x4.96mm_P1.27mm, from KiCad's library), ready for a KiCad board. 5 are in stock at JLCPCB (part C2875849).

Symbol

VDD1GND2NC3FB4CS5GATE6NC7HV8
EasyEDA_Cloud:U322From EasyEDA

Footprint

12345678
Package_SO:SOP-8_3.76x4.96mm_P1.27mmFrom KiCad's library

Parameters

8
Features
Soft-start
Frequency - Switching
40kHz~60kHz
Isolation
Non-Isolated
Operating Temperature
-40℃~+85℃
Output Voltage
12V
Topology
Buck-Boost
Voltage - Breakdown
650V
Working Mode
PFM Modulation

Order codes

1

Pinout

8
The pins of the U321
PinNameType
1VDDUnspecified
2GNDUnspecified
3NCUnspecified
4FBUnspecified
5CSUnspecified
6GATEUnspecified
7NCUnspecified
8HVUnspecified

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/youen/U321" title="U321 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/youen/U321.jpg" alt="U321" width="1200" height="900">
A picture that opens the part, for a README
[![U321](https://pcbkit.io/embed/parts/youen/U321.jpg?size=s)](https://pcbkit.io/parts/youen/U321)

Questions

Is there a KiCad symbol and footprint for the U321?

Yes. The symbol is EasyEDA_Cloud:U322 and the footprint Package_SO:SOP-8_3.76x4.96mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the U321?

SOP-8, with 8 pins. Its footprint is drawn on this page.

Where is the U321 datasheet?

Youen publishes it: the Datasheet link on this page opens it.

Where can I order the U321?

JLCPCB lists it as part C2875849, with 5 in stock; the sellers' links on this page open their listings.

What can replace the U321?

Parts like it in the library: the AP1509-12M/TR by HGSEMI, the HG1509-12M/TR by HGSEMI, the LM2576M-12/TR by HGSEMI and the XL2594-12 by XINLUDA. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8