Dear, Sir.
Sorry again and again.
My customer is asking about tDEL and tD-OFF.
1. Could you please clarify min & max (@25deg. C) of both.
tDEL min =?, tDEL max =?
ｔＤ-OFF min =?, tD-OFF max =?
2. Could you please clarify those values under low temp…
Other Parts Discussed in Thread: LM3409 , TINA-TI Dear, Sir.
A customer is consodering to put a capacitor onto LVLO pin with resistor network
to avoid EMS(Immunity) malfunction.
Hence, They would like to know the parasitic capacitance value on UVLO pin…
Other Parts Discussed in Thread: LM3409HV , TINA-TI
Dear, Sir.
I am still waiting for your advice.
Below is my personal assumption after checking all datasheet contents.
Can you accept that,?
Otherwise, Please corrent if there were any miss-understandings…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 , Hi all, For some reason, I am getting a different output current and voltage for my LED than I expect based on my calculations. Here are my LM3409 values and component choices:
VIN: 24V VO: 1…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 Hello,
Make LED lighting circuit as attached.
Using 4pcs of LM3409HV to drive 4color(RGBW) LED (Osram LE RTDUW S2W) and 4 LEDs are connected in series.
During ON test LM3409HV and FET(IRF5210…
Part Number: LM3409HV Other Parts Discussed in Thread: LM3409 Hello
Were using the LM3409HV with a shunt FET. Our circuit is very similar to the circuit in AN-1953 LM3409HV Evaluation Board (see below). Five of these drives a bank of LEDs.
The problem…
Brian -
From your description you are correct, a buck solution is more suitable. I would suggest trying LM3409HV-Q1 instead as it is dedicated for the buck topology.
John
Other Parts Discussed in Thread: LM3409HV , LM3409 , TPS92661-Q1 Hello, Please let me know about LM3409HV and TPS92661. (1) Roff and Coff setting Could you please let me know the setting method of Coff, Roff for wide Vout range ? Should we calculate the Coff and…
Hi Clinton,
Unfortunately, I am damaging another board on Friday.
Those redline are the modification that I made. I remove the R1 so that I could use my own pwm driver. Also, I set the J1 into mode 1 which EN pins is shorted to Vin.
Here is the specification…
Hello,
Firstly thanks for answer.
Ordering codes of all components was written as comments in .pdf file attached in mail.
Here are ordering codes:
-> LM3409HV
-> C1 and C5: 1206 4u7 50V, Taiyo Yuden: UMK316AB7475KL-T
-> Q1: Diodes: DMP6050SS…
