TPS61089: VQFN package and SOT package

PA3040

Part Number: TPS61089
Other Parts Discussed in Thread: TPS61178, PMP15043

Hi All,

Long chat with ti export I have selected IC TPS61089 for my commercial project. But at the design stage i found that IC manufactured VQFN package only . Hence can you please advice me about SOT package that have similar specification to TPS61089

Thanks in advanced

over 6 years ago

0 Helen chen over 6 years ago

TI__Mastermind 40080 points

Dear Sir,

Please specify the Vin, Vout and your maximum Iout . so that I can choose the most fit one for you.

0 PA3040 over 6 years ago in reply to Helen chen

Intellectual 450 points

Vin 4.5 and 15v
I out >= 2
Vout > 5 < 12 Adjustable

Below 6 Watts

Requirement for line follower robot

Thanks in advanced

0 Helen chen over 6 years ago in reply to PA3040

TI__Mastermind 40080 points

TPS61089 only support Vin<12V application. You can take a look at TPS61178.

0 PA3040 over 6 years ago in reply to Helen chen

Intellectual 450 points

Hi Helen

Thanks for info

I believe that TPS61178 identical for my requirement. Is it possible to adjust the output voltage between 7.5 to 15v using preset then what is the calculation for preset value and how it apply

Thanks

0 Helen chen over 6 years ago in reply to PA3040

TI__Mastermind 40080 points

What is the Vout you need? just '7.5V and 15V two point' or '7.5V to 15V a range'?

0 PA3040 over 6 years ago in reply to Helen chen

Intellectual 450 points

There is no fixed value and I need to Adjustable it between 7.5v to 15v using variable resistor

Thanks in advanced

0 Helen chen over 6 years ago in reply to PA3040

TI__Mastermind 40080 points

You can inject a voltage signal into the FB pin to change the Vout. The circuit is similar to the attached file.

0 PA3040 over 6 years ago in reply to Helen chen

Intellectual 450 points

In my case I can not arrange external PWM signal . Therefore PWM can not be arranged

Can we able to change the voltage by connecting variable resistor to R3 in above picture