Other Parts Discussed in Thread: LM22677 I used your company's LM22677 as the first level of voltage processing (5V output), but I found that when it starts, it will cause my image to have oblique ripples
The I observed that when the LM22677 was started…
Part Number: LM22677 Hi ,
Picture 1 is customer's last generation product and they had produced 10 kilo units without problem. Because they want to change brown-in voltage in new product,
as picture 2 they modify the EN pin from a 470kohm pull-up…
Part Number: LM22677 hi all,
I have a customer using the LM22677 and facing a problem that (in my opinion) looks like an OTP.
Unfortunately this part is very old and the datasheet is not one of the best, so I wanted to double check with you my tough…
Part Number: LM22677 I'm developing a power supply that should range between 1.5V ~ 18Vdc using LM22677TJ-ADJ / NOPB and a micro controller. I have success when the output voltage is between 3.5 ~ 18V with the load consuming between 1 ~ 2A, but when the…
Other Parts Discussed in Thread: LM22677 Hi team,
I am using the LM22677 and simulating on WEBENCH with an output voltages 8V and 30V and massaging the component values until there is one solution for both outputs. The WEBENCH solutions point to the…
Other Parts Discussed in Thread: LM22677
HI,
we are trying designa buck using LM22677 part wit an input rage from 20-30V and output of 15V 0.5A but webench is throughing design based on LM22677-5.0 but we it should provide design based…
Other Parts Discussed in Thread: LM22677 Hi,
I have problem with the Lm22677.
Attached you can find the circuit diagram.
The Vout (C39) reaches 3.8V (rms) with a ripple of 300mV, instead of 3.4V
The rms value for the FB is over the datasheet range…
Other Parts Discussed in Thread: LM22677 Hi,
Here's the design report for LM22677 Vin(30v min/38V max) Vout(12V) Iout(4A)
(please see the attached pdf.file)
As for the output Voltage setting resistor value, RFB1=787Ω、RFB2=1kΩ are chosen.
if using…
We currently purchase the LM22677-5 but I need to reduce the output to ~4V. Is the feedback pin still attached internally? Can I just put a resistor to GND and reduce the output?
Thanks.
