LM2576 Buck Converter Datasheet, Pinout, Features & Applications
Hi Everyone! I welcome you on board. Thank you for clicking this read. In this post today, I’ll walk you through the Introduction to LM2576.
LM2576 is a step-down voltage regulator, also known as a buck converter, mainly employed as a pre-regulator in linear regulators. The customized output version of this buck converter gives you the ability to set the output voltage as you like better. It is available with a remarkably good load and line regulation. Moreover, it is used to drive load under 1A and is available in fixed output voltages with 3.3V, 5V, 12V, and 15V.
I suggest you buckle up and read this post all the way through, as in this post I’ll detail the Introduction to LM2576 covering the datasheet, pinout, features, and applications. Let’s jump right in.
Introduction to LM2576
- LM2576 is a voltage regulator, also called a buck converter, mainly used as a pre-regulator in linear regulators.
- It is a simplified version of switching power supplies where it houses all functions needed to step down the circuit voltage.
- This buck converter comes with an integrated switch that drives load under 1A.
- LM2576 is available with remarkable load regulation and load line.
- LM2576 is available in two versions: version with fixed output voltage featuring 3.3V, 5V, 12V, & 15V and version with adjustable output that comes with the ability to choose your desired output.
- It is also known as the DC-to-DC power converter mainly used to step down the voltage from the input supply to its output load. The current is increased during this occurrence of voltage regulation.
- This buck converter comes with a fixed-frequency oscillator of around 52 kHz. It is also available with an in-built frequency compensation method.
- Frequency compensation is used to minimize the oscillation and vibration in the electrical circuit. Resistance-capacitance networks are applied for this frequency method to work.
- Apart from the excellent load and line regulation, this component is available with a manual shutdown option using an external ON/OFF pin.
LM2576 Datasheet
Before you apply this component to your electrical project, it’s better to go through the datasheet of the component that features the main characteristics of the device. You can download the datasheet of LM2576 by clicking the link below.
LM2576 Pinout
The following figure shows the pinout diagram of lm2576.
LM2576 is available with five terminals:
- ON/OFF: This pin is used to shut down the voltage regulator when the input supply current is decreased to 50uA. The threshold voltage is 1.3V. When the voltage on this pin is set to below the threshold voltage, it will turn on the voltage regulator. When the voltage on this pin goes above the threshold voltage it will turn off the device. And when this pin is connected to the ground or leave it open, it will remove the shutdown feature from the device. Whether you connect this pin to the ground or leave it open, in both cases the regulator remains turned on.
- VIN: This pin is connected to the bypass capacitor that reduces the voltage transients along with providing the switching current.
- Output: This terminal behaves like an internal switch where voltage potential goes back and forth between (Vin – Vsat) and -0.5V. The Vout/Vin is this pin duty cycle. The coupling is reduced due to the presence of PCB copper attached to this pin.
- Ground: This is the ground pin.
- Feedback: For the feedback loop, this pin defines the regulated output voltage.
LM2576 Features
The following are the main features of LM2576.
- Output Voltage available for variable type regulator = 1.23V to 37V
- Internal Oscillator frequency = 52-kHz (this is a Fixed Frequency)
- Output Current = 3A
- Used as a switch-mode step-down voltage regulator
- Comes with In-built Current Limit and Thermal Shutdown Protection
- Output Voltage available for fixed voltage regulator = 3.3V, 5V, 12V or 15V
- Maximum Input Voltage = 40V
- Available packages = TO-263 & TO-220
LM2576 Applications
The following are the main applications of LM2576.
- Incorporated as a pre-regulator in linear regulator
- Used in On-card switching regulators.
- Employed to drive load under 1A.
- Employed in a simple efficient step-down regulator.
- Used in a positive-to-negative converter.
That was all about the Introduction to LM2576. Hope you’ve enjoyed reading this article. If you have any queries, you can pop your question in the section below, I’d love to help you the best way I can. Feel free to share your valuable feedback and suggestions around the content we share, so we keep producing quality content customized to your exact needs and requirements. Thank you for reading the article.
1n4734 Zener Diode Datasheet, Pinout, Features & Applications
Hi Folks! I hope you’re well today. I welcome you on board. In this post today, I’ll walk you through the Introduction to 1n4734.
The 1n4734 is a silicon planner power Zener diode that is employed as a low current voltage regulator. It is incorporated as a shunt regulator in many applications. This Zener diode conducts the current in both directions in contrast to the regular diode that conducts in one direction only i.e. regular diode conducts in forward biased condition only. This Zener diode conducts in both conditions forward biased condition and reverse biased condition. Power dissipation in this Zener diode is 1W and standard Zener voltage tolerance is ±10%.
I suggest you read this entire post till the end, as I’ll detail the complete Introduction to 1n4734 covering datasheet, pinout, main features, and applications. Let’s dive in.
Introduction to 1N4734
- The 1n4734 is a Zener diode employed as a low-current voltage regulator. It is also employed in clipping circuits with high power ratings. This Zener diode is made of semiconductors and is used in voltage protection circuits.
- The current flows from the anode side to the cathode side in the regular diode in a forward-biased condition. On the other hand, in the case of the Zener diode, current conducts in both conditions i.e. forward biased condition and reverse biased condition. Forcing regular diodes to conduct in both conditions will damage the device.
- The Zener diode is normally used in modern electronics and is constructed by plenty of different voltages.
- While picking the Zener diode there are two parameters that you should consider… one is the power dissipation and the other is the power Zener voltage. When a higher reverse voltage is applied to the Zener device it creates the Zener voltage.
- Some Zener diodes experience sharp and highly doped p-n junction when they undergo a Zener effect or Clarence Zener.
- The power dissipation inside the Zener diode is used to identify the amount of current flow. More power dissipation results in more current flow. Power dissipation in this Zener diode is 1W.
- Zener diodes are utilized to generate low-power supply rails using higher voltages. Reference voltages in the electrical circuits are also produced by these Zener diodes.
- In some electrical circuits, there is a limit to the applied voltage. The voltage applied above this limit can damage the device. These Zener diodes are used in those circuits to prevent circuits from overvoltage.
1N4734 Datasheet
Before you apply this component to your project, it’s wise to have a look at the datasheet of the component that contains the main characteristics of the device. Click the link below if you want to download the datasheet of 1n4734.
1N4734 Pinout
The following figure shows the pinout diagram of 1n4734.
- The 1n4734 comes with two terminals named anode and cathode. The anode terminal is positive while the cathode terminal is negative.
- The current enters the diode through the positive anode terminal while the current leaves the diode through the negative cathode terminal.
- The current flows in both conditions in 1n4734 i.e. forward biased condition and reverse biased condition.
1N4734 Features
The following are the main features of the 1n4734 Zener diode.
- Package = DO-41
- Zener Voltage (VZ) = 5.1V
- Used as shunt regulators.
- Power dissipation (PZ) = 1W
- Zener regulator current (Izt) = 49mA
1n4734 Applications
- Used in voltage protection circuits.
- Used as voltage protection for Microcontrollers.
- Used as a low current voltage regulator.
- Used for clipping circuits with high power ratings.
- Used in voltage stabilizing circuits.
That’s all for today. I hope you’ve enjoyed reading this article. If you’re unsure or have any questions, you can ask me in the section below, I’d love to help you the best way I can. Feel free to share your thoughts and feedback around the content we share, so we keep sharing quality content customized to your needs and requirements. Thank you for reading the article.