AnsweredAssumed Answered

regarding one voltage regulator

Question asked by bshivakumar.uts@gmail.com on Jun 28, 2018
Latest reply on Jul 3, 2018 by SYoung

actually i am converting 12V TO 5V USING ONE REGULATOR LTM4601.

I HAVE DESIGNED CIRCUIT AS PER HIS REFERENCE CIRCUITRY DESIGN.

IN THAT HE USED FEEDBACK RESISTOR (RFB) AS 8.25KOHMS TO CONVERT 12V TO 5V. BUT IN OUTPUT I AM NOT GETTING 5V,IT IS SHOWING ALMOST 7.65V.

 

this is the formula i have used for convert voltage

              VOUT = 0.6V • 60.4k +RSET RSET

Table 1. RSET Standard 1% Resistor Values vs

VOUT RSET (kΩ)            Open          60.4           40.2         30.1       25.5      19.1            13.3             8.25

VOUT (V)                          0.6              1.2             1.5             1.8        2           2.5              3.3                5

then i did small modification in design BOM, i have changed RFB value from 8.25k to13k. 

 

finally i got  5V but still i am in confusion state that i have designed according datasheet only **** output is varied as i said previous.

Outcomes