LM25119Q: PMP20659 Device

Kuan Wei Chen (Kevin Chen)

Genius 9710 points

Part Number: LM25119Q
Other Parts Discussed in Thread: PMP20659

Dear Team,

For the LM25119Q reference design, can the BJT 2DB1694-7 used be replaced by MMSTA56Q?

MMSTA56Q.pdf

Kevin

over 5 years ago

0 Qian Chen over 5 years ago

TI__Mastermind 24075 points

Hi Kevin,

I don't find MMSTA56Q in the reference design.
Which part do you refer to ?

Thanks
Qian

0 Kuan Wei Chen (Kevin Chen) over 5 years ago in reply to Qian Chen

TI__Genius 9710 points

Dear Qian,
It seems PMP20659 is the only reference design.
www.ti.com/.../PMP20659

It use 2DB1694-7 for Q9, Q10, Q11, and Q12. Can it replce by MMSTA56Q?
I have attahced the datasheet, please help on checking it.

BR
Kevin

0 Qian Chen over 5 years ago in reply to Kuan Wei Chen (Kevin Chen)

TI__Mastermind 24075 points

HI Kevin,

Got it. I thought you refer to reference design on datasheet.
They help to turn on low-side FET quickly, also it helps to clamp low-side FET gate low if controller is not close to FET.
The current rating of MMSTA56Q is smaller than 2DB1694-7. It's better to find a part with similar current rating.
If customer can not find it, it is fine to use MMSTA56Q.

Thanks
Qian

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LM25119Q: PMP20659 Device