AP1 Dc-to-dc Converter Control Circuits The is a monolithic control circuit containing the primary functions required for DC-to-DC converters. AP1 datasheet, AP1 circuit, AP1 data sheet: SLS – DC-TO-DC CONVERTER CONTROL CIRCUITS,alldatasheet, datasheet, Datasheet. ORDERING INFORMATION. See general marking information in the device marking section on page 11 of this data sheet. DEVICE MARKING INFORMATION. 1.

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Value in the uH range, you may need to try a couple of different types. January 16, at 9: Because the ring signal is AC superimposed on the DC, masking the ring should be a matter of introducing a diode bridge between the phone line and the handset.

The next size inductor up I have is uH. Typical of the regulation system used in a IC, the timing will “stutter” as needed to maintain Vout regulation at a steady 5. A 12v line filter might also be advised, 340633ap1 can be bought from auto stores. This entry was posted in c-electronics and tagged SMPS.

Leave a Reply Cancel reply Enter your comment here You May Also Like: A properly selected inductor or a good core hand wound for best performance could allow lower operating frequency and less current ripple, and maybe less DC ohms, and maybe pick up another 0. They were incredibly expensive but sometimes you could get samples. I am building datasneet boost circuit, so the overall circuit layout will look like this:.


But I recently found these cheap little adapter boards on amazon that can be found in a variety of IC packages for example https: Energy conversion efficiency is very high due mainly to the choice of external components used with the cheap SMPS IC.

A single pole double-throw switch or an equivalent relay device would serve to switch one phone lead between the bridge or directly to the line to re-enable the ring.

System Logic Semiconductor – datasheet pdf

Great performance for the price. Modifying the circuit for 24v operation. High voltage is not just used only for the fun to deal with higher voltages. If you want to invest some effort it can be improved further; 1. Now days, you can hardly go wrong with some of the Chinese bargains on ebay.

December 13, at Theory and Applications — quite useful for understanding all the various ways the IC can be used.

12v to 5v DC high efficiency SMPS buck converter using 34063 IC.

It is efficient enough to not need a heatsink even at 5v 1. January 25, at 6: The prototype was tested in hardware, please excuse the messiness. Using these requirements, according to the calculator, the passive values should be: The downside is they are a bit noisier than linear regulators. Datazheet I looked at the datasheet, I interpreted it as a maximum of 40V in.


December 13, at 8: Closest I have is pf. I would use a ohm resistor instead of the 10 ohm resistor. R — This resistor should be ohms. References First, here are some references: I am rather much limited with using through-hole components since the rest of the project is being built that way. I guess the SGN has been around quite a while, but the amount of hobbyist understandable information is very small.


Jan 1, The current limit is best at slightly above the max required current. Using a well designed PCB with thick short tracks for the main current paths might save 30 milliohms and give maybe 0.


I have not tried this configuration myself and cannot offer any further advice! Scope current L1 inductor at 5v 0. Follow Blog via Email Enter your email dtaasheet to follow this blog and receive notifications of new posts by email.

For lower operating freq CT should also be increased to 1. Cin — This capacitor is next to Vin and should be uF. Do you already have an account? Jan 22 update: This project converts 12v DC to a regulated 5v DC at up to 1. It has 51 turns of 1. With a 24v Vin you should use a higher inductor value and larger inductor core, uH and up are recommended.