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.

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This brings me the idea of forming the required resistance from two commonly stocked resistor connecting in parallel.

LM Datasheet(PDF) – Motorola, Inc

So I purchase the IC and its component to try it out. A l,2576-5.0 purpose board is created to allow me to test various LM series IC chip.

While dealing with circuits prototype, I often need to use resistor value that may not be common. A new circuit was build and datashret familiar failure was observed.

LM Datasheet(PDF) – Motorola, Inc

Initially I thought that I had use the wrong type of inductor, resulting in the circuit malfunction. A standard series of inductors optimized for use with the LM, Datashheet are available from several different manufacturers.


For this application, a low forward voltage diode is necessary. For exact component value design, you need to the datasheet. Click for LMadj layout. Initially I had used a smaller type of inductor looks like a resistor.

The circuit was rebuild and it finally works. LM circuits perform same function as the commonly known voltage regulator LM from National Semiconductor.

LM2576-5.0WU Data Sheet – Microchip Technology

WCR series- Surface mount resistors suitable for automatic placement. Both brand new IC are tested to have the same problem. Nowadays dc-dc converter are getting smaller and comes in the TO package too.

The voltage regulator dissipates a lot heat. They are usually one of the important specification to take note while selecting inductor from datasheet. On the following table, the 1st row and datahseet represents the common resistor value that I normally keep stock. Thermal shutdown and current limit protection. It is small and looks like a color coded resistor.

The 1N is a high current, high speed, schottky diode and is suitable for this digital switching circuit. Suitable only for very low power application.

It has been some time since I learn to use LM If size is a constraint, you might consider the model SDM The circuit couldn’t work and was later found to be IC problem. Simply input the inductance value you need, the program will display a table containing the wire coil height radius and number of turns required. Schematic, PCB layout and component list are available on this page. As a general guide, a higher voltage rating has lower ESR rating.


Introducing the types of resistors W series- Vitreous enamelled wirewound resistors offering high power, high stability and reliability. TO thin 7 pins. The experiment was forgotten after a series of failure. IC becomes very hot.

LM, LMM are available from several different. A larger and better storage system will be needed. Choose a suitable voltage rating across the capacitor. Still it doesn’t work. Current drawn can be observe on my lab power supply current meter. If you want the output voltage adjustable, there is also a adj model. Efficient pre-regulator for linear regulators. One fine day I went back to the shop where I first purchase my LM and brought 2 additional LM for more testing.