TPS74801-Q1: TPS74801-Q1

Ian Wang

Mastermind 25065 points

Part Number: TPS74801-Q1
Other Parts Discussed in Thread: TPS74801

Hi Sir,

My customer looking for LDO with below condition,

Input: 2.5V~5V

Output: 0.9V/1.5A

Q-Grade

I suggest using TPS74801-Q1 for them, pls help for questions from customer as below,

When Vin 3.3V, Vout 0.9V/1A, TA=85℃,

How about power consumption and temperature of TPS74801? Is it workable?

Thanks, Ian.

over 3 years ago

0 Aaron Paxton over 3 years ago

TI__Expert 3665 points

Hey Ian,

Given that's 2.4W of dissipation, I think you will have trouble with that configuration. Is it possible to use regulate from a lower voltage rail in the system to limit the dissipation across the device?

~ Aaron

0 Ian Wang over 3 years ago in reply to Aaron Paxton

TI__Mastermind 25065 points

Hi Aaron,

Thanks, or do we have suitable solution for these condition?

Input: 2.5V~5V

Output: 0.9V/1.5A

Q-Grade

Thanks, Ian.

0 Aaron Paxton over 3 years ago in reply to Ian Wang

TI__Expert 3665 points

Hey Ian,

Sorry for the delay. You need an LDO with a thermal resistance of 27C/W or lower to accomodate 2.4W of dissipation. We currently don't have any LDO that can do that conversion.

Can they use a different VIN rail?

~ Aaron

Power management

Power management forum

TPS74801-Q1: TPS74801-Q1