TLV62090: feedback voltage accuracy for VIN ≦ VOUT + 1

Hello Yasuhiro Takemoto,

Yasuhiro Takemoto said:

What is the feedback voltage accuracy for VIN ≦ VOUT + 1?

In this case the device will be in 100% duty cycle mode, so the HS-FET is always on, in this case VOUT accuracy depends upon VIN accuracy.

Thank you & regards,

Moheddin.

Hello.

Thank you for an answer. I have additional questions.

I would like to use an input voltage of 3.3V and an output voltage of 2.5V.
In that case, Duty will be 75.7% (=2.5/3.3).

Since VIN=3.3V, VOUT=2.5V,
It will be as below.

VIN ≦ VOUT + 1
(3.3 ≦ 2.5 +1)
Please tell me the feedback voltage accuracy in this case.

Feedback voltage accuracy for "VIN > VOUT + 1V" is listed in the data sheet,
but feedback voltage accuracy for "VIN ≦ VOUT + 1" is not listed in the data sheet.

Best regards,
Yasuhiro Takemoto

Hello Yasuhiro Takemoto,

Yasuhiro Takemoto said:

VIN ≦ VOUT + 1
(3.3 ≦ 2.5 +1)

I checked our database and unfortunately I didn't find any information with the above condition.

Thank you & regards,

Moheddin.

Hello.

Thank you for an answer.

I am asking this question because the characteristics at "VIN ≦ VOUT + 1" are not listed in the data sheet.

Please check the characteristics of VFB at "VIN ≦ VOUT + 1" with someone who knows, such as the product design department.

Best regards,
Yasuhiro Takemoto