TPS61026: TPS61026

Sherman Wilder

Part Number: TPS61026

Hi, I am a current student designing a PCB Board for my research. I am planning to use this Boost Converter, but I was looking at the documentation and was wondering for figure 24, figure 25, how do I determine the resistor values for a 4.6V to 5.5V output?

my input voltage (VBATT) is coming from a battery management circuit based from a 3.7 lithium ion battery.

over 5 years ago

0 Minqiu Xie over 5 years ago

TI__Mastermind 21565 points

Hi Sherman:

Are they different project that need 4.6V, 5.5v output voltage? Or you need both of them same time with one IC?

And what's the resistance you are talking about? The divided resistance for battery monitor or output voltage feedback?

0 Sherman Wilder over 5 years ago in reply to Minqiu Xie

Prodigy 220 points

Sorry, trying to find R1, R2, R5 to aquire a 5 V output.

Is there a Vin vs Vout table or graph? My battery, which is my input might decrease from 3.7 V to a lower voltage, so how would that affect my output voltage?

0 Minqiu Xie over 5 years ago in reply to Sherman Wilder

TI__Mastermind 21565 points

Hi Sherman:

The R1,R2 and R5 is for batter monitor function. TPS61026 is fixed 5V out put version, so you don't need to set the resistance.

If your load is not too heavy to exceed the limitation, the Vout could be regulate 5V well. Just keep Vin in recommended range as mentioned is datasheet page 5.

Power management

Power management forum

TPS61026: TPS61026