TPS7B82-Q1: TPS7B8250EVM

Yian Luo

Prodigy 210 points

Part Number: TPS7B82-Q1
Other Parts Discussed in Thread: TPS7B8250EVM,

Tool/software:

Hi,

I am using TPS7B8250EVM board to reproduce the Typical Characteristics shown in datasheet of TPS7B82-Q1.

My questions are as below:

1. Generally, the quiescent current is defined as the ground pin current when no load or light load, however, Fig. 6-1 and 6-2 show curve of quiescent current under different output current.

How to calculate the quiescent current under different output current?

2. How do I test the quiescent current using a DMM by TPS7B8250EVM board?

Thanks and Regards

4 months ago

0 Hannah Grace 4 months ago

TI__Genius 12165 points

Hello,

Thank you for your question.

I believe this definition application note on quiescent current will help: Understanding the Terms and Definitions of LDO Voltage Regulators

Here is another helpful app note: Understanding the Foundations of Quiescent Current in Linear Power Systems

I also believe this app note will help you to better understand measuring quiescent current: IQ: What it is, what it isn’t, and how to use it

Hope this helps!

Best,

Hannah

0 Yian Luo 4 months ago in reply to Hannah Grace

TI__Prodigy 210 points

Hello Hannah,

Thank you for your kind documents share which help me a lot.

And may I know have the websites to search for similar tutorials documents effectively?

Thank and Best,

Yian

0 Hannah Grace 4 months ago in reply to Yian Luo

TI__Genius 12165 points

Hi Yian,

There are some videos covering LDO basics on the TI website.

Here is the one covering quiescent current: LDO basics: Quiescent current | Video | TI.com

Best,

Hannah

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TPS7B82-Q1: TPS7B8250EVM