Site Overlay


LMT/NOPB Texas Instruments Switching Voltage Regulators 3A STEP- DOWN VLTG REG datasheet, inventory, & pricing. High-Efficiency 3A Battery Chargers Use LM Regulators (Rev. B) · Link · Input and Output Capacitor. LMWU Microchip Technology / Micrel Switching Voltage Regulators 3A Step-Down SMPS Regulator datasheet, inventory, & pricing. LM Easy Switchertm a Step-down Voltage Regulator The LM series of regulators are monolithic integrated circuits ideally suited for easy and.

Author: Fekus JoJobar
Country: Lithuania
Language: English (Spanish)
Genre: Technology
Published (Last): 24 December 2008
Pages: 94
PDF File Size: 14.12 Mb
ePub File Size: 15.54 Mb
ISBN: 988-3-89627-426-3
Downloads: 20991
Price: Free* [*Free Regsitration Required]
Uploader: Tojacage

It is really interesting. The circuit using a high power rating inductor on the right shows a cleaner DC supply, although the inductance value is different from the design. The temperature depends on the amount of current flowing through it. After further testing, I find out that dtaasheet capacitor works as well. Both brand new IC are tested to have the same problem. The output voltage of 5V cannot be sustain and eventually drop when more than 1A of current is draw by the load.

General tester for LM series dc-dc IC chip. For more information on making your own PCB board, you may like to lm2576-5., website “. Ideally, this is a 5V 0.

LM2576-5.0 Buck Converter overview

The circuit is fabricated from photo-resist PCB board. The next thing that comes to mind, is the IC. Through some research, I get to learn about commercial standard dc-dc IC that perform with only a few external components. If the amount current continue to flow through the inductor, the inductor is basically becoming a heater. The IC package is surface mount however soldering is relatively easy because the IC leads are quite broad.


These component include the LM, inductor and the diode. You need not have to understand formula to make your own inductor. Other voltage output base on commercial available resistors. To lm25765.0 the range of resistor value that is available in the industrial, multiply the normalise standard found in the table in terms of- Example: The circuit schematic and component list are selected from the manufacturer’s datasheet.

Om2576-5.0 transistor forms the oscillating circuit generating pulsing output. Click for LMadj layout. Suit for use in harsh environment. The LM, LMM series offers a high-efficiency replacement for popular three-terminal linear regulators. Initially I had used a smaller type of inductor looks like a resistor. I have not yet do a test to check on the possibility of the inductor contributing to the failure.

This resistor table is interesting. The following table provides a quick reference for power supply circuit.

Continuous current means the amount of current required to heat up the inductor to a certain temperature. There is still ripple at it’s output but I guess it will be minimum using datashee inductance value of uH with higher power rating. This is a very simple and useful adjustable voltage regulator.

DC-DC converter using LM

The inductor coil use should be able to datashet the current passing through the inductor coil. NCP is very similar to MC Uses readily available standard inductors.


Input voltage needs to be at least 7V up to a maximum of 20V in order for LM to regulate at an output of 5V.

LM datasheet Click for Daatsheet The standard EIA decade resistor value is group into different series. Long time ago, when technology is not so advance, resistor manufacturing is not unable to produce precise resistor value, as in today.

Low input voltage from 1Vdc to output voltage up to 3. Suitable only for very low datsheet application. IC becomes very hot. Still it doesn’t work.

Design tool for LM component calculation

Simple high-efficiency step-down buck regulator. So I purchase the IC and its component to try datasheett out. I do not have proper equipment to measure the inductor on hand. Suitable for battery powered lm25765.0. Various combination of inductor, capacitor and diode can also be tested under this board. Initially I thought that I had use the wrong type of inductor, resulting in the circuit malfunction. Current saturation means the amount of current required that flow through the inductor, in order to reduce the inductance of the component.