Part Number: LM3485 I am using the LM3485 to convert 24V DC to 8.15V DC. Once I change the Cout to different brand (same Capacitance and same ESR resistance), the load transient analysis shows the output voltage falling to a very low level. I know the…
Part Number: LM3485 Other Parts Discussed in Thread: LM3489EVAL 你好！
1.The input voltage is 24V, and the output voltage is 3.6V;
2.Please help confirm the impact of the size of the inductance on the output voltage. We have used two brands of inductors…
Part Number: LM3485 Hey Buck Controller team,
I have a customer evaluating the LM3485 for a new power supply design and we are hoping to get some guidance from your team regarding input capacitor selection on Vin.
We see that the typical application circuit…
Part Number: LM3485 Buck regulator team,
I could use some help finding a good replacement P-FET to use with the LM3485. Webench recommends the FDC5614P in a SOT-23-6 package, which the customer used. This is very difficult to source right now, so we're…
Part Number: LM3485 HI Teams:
The power supply chip is broken down (between the power supply chip pin 2 and pin 1, between pin 2 and pin 5, and between pin 2 and pin 7 are broken down)
Please help to analyze where the abnormal voltage or current…
Part Number: LM3485-Q1 We are designing a 13V-30Vin / 12Vout buck converter using LM3485Q1MM/NOPB IC. In the first revision of our design, the converter was working with no issues except for the PMOS heating too much for our requirements (~60C temp rise…
Part Number: LM3485
Hi there,
I am using the SPICE model of the LM3485 in TINA. When I configure the circuit as shown in the datasheet (Figure 27, TINA circuit below), I get convergence errors when attempting to simulate the circuit.
However when I…
Part Number: LM3485 We are using your PFET Buck Controller LM3485 and have a few questions about noise problems and their solutions.
At 7.2 V – 7.4 V we are currently facing some noise problems on the input current.
The output voltage is 7 V.
…
Part Number: LM3485 Is there a minimum load current for the LM3485? I like the idea of using the LM3485 for my application since it has a very high load transient response. In my application I will be dropping from 18V to 12V and the load will be switched…
Part Number: LM3485 Hi team,
I have two questions about Hysteretic Control Mode.
1. "No clock or error amplifier is needed, so operating current is very low. " Why?
2. “A certain amount of ripple is required at the output from the output capacitor…
