LM2575SX-ADJ/NOPB

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LM2575SX-ADJ/NOPB

IC REG BUCK ADJ 1A TO263

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Spezifikationen

Series SIMPLE SWITCHER®
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 1.23V
Voltage - Output (Max) 37V
Current - Output 1A
Frequency - Switching 52kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package TO-263 (DDPAK-5)
Base Product Number LM2575

Übersicht

Description

The LM2575SX-ADJ/NOPB is a versatile, adjustable step-down (buck) voltage regulator designed for applications that require efficient power conversion. It can provide output voltages ranging from 1.23V to 37V, with a maximum output current of 1A. This device operates with a high efficiency of up to 90%, minimizing heat generation and improving overall system performance.
Key features include a built-in switching frequency of 52 kHz, which helps reduce the size of external components like inductors and capacitors. The LM2575SX-ADJ also includes protection mechanisms such as thermal shutdown, current limiting, and a low ripple voltage output, making it suitable for various applications like battery chargers, power supplies, and automotive systems.
The "NOPB" designation indicates that the part is free of lead (Pb), aligning with RoHS compliance for environmental safety. Overall, the LM2575SX-ADJ/NOPB is an efficient, reliable choice for designers looking to implement a compact and adjustable voltage regulation solution.

Features

The LM2575SX-ADJ/NOPB is a step-down (buck) voltage regulator with the following key features:
1. Adjustable Output Voltage: The output voltage can be set from 1.23V to 37V using external resistors.
2. High Efficiency: Typically achieves efficiency levels up to 75% to 90% depending on load conditions.
3. Current Capability: Delivers up to 1A of output current.
4. Wide Input Voltage Range: Operates with input voltages from 4.0V to 40V.
5. Built-in Protection: Features thermal shutdown and current limit protection mechanisms.
6. Simple Design: Requires minimal external components for implementation.
7. Internal Switch: Integrates a high-efficiency switch, reducing external component count.
8. Switching Frequency: Operates at a fixed frequency of 52 kHz, allowing for smaller inductor and capacitor sizes.
9. Wide Operating Temperature Range: Rated for operation from -40°C to +125°C.
These features make the LM2575SX-ADJ/NOPB suitable for various applications, including power supply converters and battery-powered devices.

Package

The LM2575SX-ADJ/NOPB comes in a TO-220 package type. This package features a robust design suitable for heat dissipation and is commonly used in power management applications.

Pinout

The LM2575SX-ADJ/NOPB is a step-down (buck) voltage regulator from Texas Instruments. It features a pin count of 5. The pin configuration and their functions are as follows:
1. Vin: Input voltage pin (connect to the supply voltage).
2. GND: Ground pin (common reference for the circuit).
3. Vout: Adjustable output voltage pin (connects to the output load).
4. Feedback (FB): Feedback pin used to set the output voltage (connected to a voltage divider for adjustable output).
5. Switch (SW): Switch pin connected to the inductor; this pin is used for switching the output voltage.
The LM2575SX-ADJ/NOPB can provide up to 1A output current and offers adjustable output voltage ranging from 1.23V to 37V, making it versatile for various applications.

Manufacturer

The LM2575SX-ADJ/NOPB is manufactured by Texas Instruments (TI), a global semiconductor company. Texas Instruments specializes in designing and manufacturing a wide range of analog and embedded processing components. Founded in 1930, the company is well-known for its innovation in the electronics industry, particularly in power management, signal processing, and microcontrollers. TI serves various sectors, including automotive, industrial, communications, and consumer electronics, and is recognized for its commitment to quality and technological advancement.

Application

The LM2575SX-ADJ/NOPB is a Step-Down (Buck) voltage regulator used in various applications including power supplies for automotive electronics, LED drivers, battery chargers, and telecom equipment. It provides adjustable output voltage, high efficiency, and supports moderate output current, making it suitable for portable devices, industrial automation, and consumer electronics. Its robust design allows for reliable performance in demanding environments.

Equivalent

The LM2575SX-ADJ/NOPB is a step-down voltage regulator. Equivalent products include:
1. LM2596 (adjustable version)
2. LM2675 (higher frequency)
3. LM2576 (higher current rating)
4. MIC29150 (low-dropout)
5. TPS54340 (more efficient, newer design)
Ensure to check specifications for voltage, current ratings, and features to confirm suitability in your application.

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