Hi Piyush, The LM3668 is not recommended for new designs, but the device will stay in production to support existing customers. Instead, we recommend the TPS63802. It has similar functionality and packaging, and for your conditions the efficiency is around…
The evaluation board has 4 layers: TOP, GND, SGND and BOTTOM. LM3668 pin 3 goes to GND layer while LM3668 pin 9 and EP/DAP goes to SGND layer.
My PCB also has 4 layers: TOP, GND, PWR(3.3V) and BOTTOM. LM3668 pin 3 and 9 goes to GND layer. My question…
Part Number: TPS63001 Other Parts Discussed in Thread: BQ24298 , , LM3668 , TPS63010 , TPS630252 , TPS62130 There is certainly no lack of power options for battery-powered devices (and that's just from TI)! I have two different use-cases that I'd like to get…
Other Parts Discussed in Thread: LM3886 , LM3668 , DRV8701 I'm Tsukiyama Masahiro and electrical engineer for motor driver circuit.
There is a problem with LM3886 operation at low temperature.
It does not work at low temperature. But it works at room…
Hi,
The minimum input voltage require for 5V regulation is 5.6V for Y version(550KHz) and 5.9V for X version(1.6MHz). If you are planning to power this device from USB to get 5V@1A , it wont be possible ( Vin range from USB is 4.5V to 5.5V ).More suitable…
Other Parts Discussed in Thread: LM1875 , LM3668 Could you please help in choosing a audio amplifier IC for DIY home speakers (2.1 system)?
Whether to go for class AB amplifier like LM1875 or LM3668. Or go for a class D amplifier like TPA3116.
Looking at…
Hello Ryan, thanks for your answer. as input i will have a wall adapter - so no limitations on this side. (sorry for forgetting to include this info.)
---- i have tried the Webbench tool. if i go through the process and use this start values: VMin=3.0V VMax…
Hi Lenard & Rinzai --
Same question for LM3668 http://www.ti.com/lit/ds/symlink/lm3668.pdf -- I'd like to get the thermal pad dimensions.
Thanks very much!
Joe
Hello,
I agree with Chris that we need to know the supply voltages for items 1, 2, and 3. For the LED driver there are numerous ICs for LED flash function. Since end customer can install batteries backwards be sure to incorporate a P-channel mosfet as…
Your solution that uses a buck for 5V then a boost for 12V is a viable option. For the boost stage in such a configuation, you have several choices from Ti including LM3668. You may also consider a different approach--a single-stage, dual output buck-boost…