Imagens apenas para referência
LM2574N-5.0
+Lista de MateriaisIC REG BUCK 5V 500MA 8DIP
-
FabricanteTexas Instruments
-
Peça do Fabricante #LM2574N-5.0
-
Ficha Técnica LM2574N-5.0 DataSheet
-
Pacote DIP-8
-
Em Estoque5049
365 Garantia de Qualidade em 1 dia
7*24 Garantia de serviço em 24 horas
90-Garantia de pós-venda em 1 dia
Garantia de Produto Genuíno
Especificações
| Atributo | Valor |
| Package / Case | Tube |
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 5V |
| Current - Output | 500mA |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Through Hole |
Visão Geral
Description
Key features include:
1. Wide Input Voltage Range: It typically accepts input voltages from 4.75V to 40V, providing versatility for various power supply sources.
2. Efficiency: The switching regulation design allows for efficiencies up to 80-90%, minimizing heat dissipation.
3. Output Current: It can deliver an output current up to 500mA, making it suitable for powering small devices or parts of larger systems.
4. Protection: Built-in features include thermal shutdown, current limiting, and safe operating area protection to enhance reliability.
5. Ease of Use: Requires minimal external components, simplifying circuit design.
Overall, the LM2574N-5.0 is well-suited for applications requiring efficient power conversion with a fixed output voltage, such as embedded systems, battery-powered devices, and consumer electronics.
Equivalent
Features
1. Fixed Output Voltage: Provides a regulated output voltage of 5.0V.
2. Wide Input Voltage Range: Capable of handling input voltages from 4.75V to 40V, making it versatile for various power supply applications.
3. Efficient Output: Offers high efficiency, typically around 80-90%, due to its switching regulation technique.
4. Output Current: Can deliver up to 500 mA of continuous output current.
5. Internal Frequency Compensation: Simplifies design by incorporating necessary compensation internally.
6. Current Limiting and Thermal Shutdown: Includes built-in protection features to prevent damage from overcurrent or overheating.
7. Low Standby Current: Minimizes power consumption when in standby mode.
8. Standard Pin Configuration: Comes in a standard DIP-8 package for easy integration into circuit boards.
9. Soft Start: Reduces inrush current during startup to protect the device and connected components.
These features make the LM2574N-5.0 suitable for a wide range of applications, including power supply solutions for microcontrollers and other digital systems.
Pinout
1. Pin 1 (VIN): Input voltage pin where the unregulated input voltage is applied.
2. Pin 2 (VSW): Switch output pin connected to the inductor, where the switching action takes place.
3. Pin 3 (Ground): Common ground reference for both input and output.
4. Pin 4 (Feedback): Not used in the fixed version (LM2574N-5.0) as the feedback is internally connected to the fixed voltage divider.
5. Pin 5 (ON/OFF): Allows the regulator to be turned ON or OFF; connecting this pin to ground enables the regulator.
6. Pin 6 (Ground): Internally connected to Pin 3 (Ground).
7. Pin 7 (Ground): Internally connected to Pin 3 (Ground).
8. Pin 8 (Ground): Internally connected to Pin 3 (Ground).
The LM2574N-5.0 is designed for efficient voltage regulation with minimal external components, suitable for applications requiring a 5V output.
Manufacturer
Application
1. Embedded Systems: Provides stable 5V power to microcontrollers and peripherals.
2. Industrial Automation: Powers control systems and sensors with regulated voltage.
3. Consumer Electronics: Used in devices like radios, chargers, and LED drivers.
4. Networking Equipment: Powers routers, modems, and other communication devices.
5. Automotive Electronics: Provides regulated power in ECU and infotainment systems.
6. Battery-Powered Devices: Efficiently manages battery power to extend device life.
These applications benefit from its ease of use, low component count, and wide input voltage range.