Mpq4316gre-33-aec1-p

DC-DC Power Converters
1

My customer got boards where I used MPQ4316GRE-33-AEC1-P, I put also 100K and 31K6 if use ADJ version. Customer measured 5V and sent me picture. I can’t recognize from datasheet is it 3.3V, 5V or ADJ version

MPSP40
MP4316
4B131B
E

Best regards,
Darko

2

Hello @ilic.darko,

Welcome to MPS forums. The MPQ4316-33-AEC1-P is designed for fixed 3.3 V output without having external resistors on the board. Please share the schematic of the board where 5 V was measured.

3

image
image1614×740 83.8 KB

Here is they measured 5V on TP22 output

4

image
image943×1550 130 KB

5

Hello @ilic.darko,

Thank you for sharing this schematic and top marking. The schematic shows the output as 3.3 V. For 5 V output, please change R54 to 19.6kohm.

6

I need 3.3V output, but they measure 5V which is wrong. NEED 3.3V OUTPUT as per schematic, but why has 5V?

7

Hello @ilic.darko,

Please remove the FB resistor divider and connect FB pin directly to the output as shown in the typical application circuit

image
image818×539 48.7 KB

Please let me know if this resolves the issue.

8

Thank you. According to mark on chip is it 3.3V version?

9

Hello @ilic.darko,

It should be 3.3 V version as long as the Vout is 3.3 V without the FB resistors.

10

Hello @ilic.darko,

This part is indeed a fixed 3.3 V output version of the MPQ4316.

11

Thank you @Saquib.FAE

1 Like