仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR) |
| Series | SIMPLE SWITCHER® |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Current - Output | 3A |
| Frequency - Switching | 550kHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概要
Description
The LM2853MHX-3.3 is a voltage regulator integrated circuit (IC) designed by Texas Instruments. It is part of the LM2853 series, which offers efficient step-down (buck) switching regulators. The "-3.3" suffix indicates that this particular model provides a regulated output voltage of 3.3 volts.
Key features of the LM2853MHX-3.3 include high efficiency, which is achieved through its synchronous rectification design, and the ability to deliver up to 3A of output current. The IC is optimized for low-noise applications and supports a wide input voltage range, making it versatile for various power management tasks.
This regulator is often used in applications requiring efficient power conversion, such as in microcontroller power supplies, communication devices, and other electronic equipment. The LM2853MHX-3.3 offers additional features like thermal shutdown and overcurrent protection to ensure reliable operation.
Overall, the LM2853MHX-3.3 is valued for its compact size, efficiency, and reliability, making it an ideal choice for designers looking to implement a stable 3.3V power supply in their systems.
Key features of the LM2853MHX-3.3 include high efficiency, which is achieved through its synchronous rectification design, and the ability to deliver up to 3A of output current. The IC is optimized for low-noise applications and supports a wide input voltage range, making it versatile for various power management tasks.
This regulator is often used in applications requiring efficient power conversion, such as in microcontroller power supplies, communication devices, and other electronic equipment. The LM2853MHX-3.3 offers additional features like thermal shutdown and overcurrent protection to ensure reliable operation.
Overall, the LM2853MHX-3.3 is valued for its compact size, efficiency, and reliability, making it an ideal choice for designers looking to implement a stable 3.3V power supply in their systems.
Equivalent
The LM2853MHX-3.3 is a step-down voltage regulator. Equivalent products include the LM2596-3.3 from Texas Instruments, the LMR33630 from Texas Instruments, the MC34063 from ON Semiconductor, and the LM2576-3.3 from various manufacturers. These alternatives offer similar functionalities but may differ in specifications like current rating, efficiency, or package type. Always check the datasheet for compatibility with your application.
Features
The LM2853MHX-3.3 is a step-down DC-DC converter with the following key features:
1. Output Voltage: It provides a fixed output voltage of 3.3V.
2. Input Voltage Range: Operates with an input voltage range typically between 3V to 5.5V.
3. Output Current: Capable of delivering up to 3A continuous output current.
4. Efficiency: Designed for high efficiency, often over 90%, reducing heat generation and improving power usage.
5. Switching Frequency: Offers a fixed high switching frequency, usually around 550 kHz, aiding in compact design with smaller external components.
6. Thermal Protection: Includes thermal shutdown to protect the device from overheating.
7. Short-Circuit Protection: Features overcurrent protection to prevent damage from short circuits.
8. Soft Start: Incorporates a soft-start function to limit inrush current during startup.
9. Package: Typically available in a thermally enhanced TSSOP package, which aids in thermal dissipation and compactness.
These features make the LM2853MHX-3.3 suitable for applications needing reliable power conversion with high efficiency and compact size.
1. Output Voltage: It provides a fixed output voltage of 3.3V.
2. Input Voltage Range: Operates with an input voltage range typically between 3V to 5.5V.
3. Output Current: Capable of delivering up to 3A continuous output current.
4. Efficiency: Designed for high efficiency, often over 90%, reducing heat generation and improving power usage.
5. Switching Frequency: Offers a fixed high switching frequency, usually around 550 kHz, aiding in compact design with smaller external components.
6. Thermal Protection: Includes thermal shutdown to protect the device from overheating.
7. Short-Circuit Protection: Features overcurrent protection to prevent damage from short circuits.
8. Soft Start: Incorporates a soft-start function to limit inrush current during startup.
9. Package: Typically available in a thermally enhanced TSSOP package, which aids in thermal dissipation and compactness.
These features make the LM2853MHX-3.3 suitable for applications needing reliable power conversion with high efficiency and compact size.
Pinout
The LM2853MHX-3.3 is a voltage regulator with a fixed output voltage of 3.3V. It comes in a 20-pin TSSOP package. This device is designed for applications requiring a stable output voltage with a high degree of efficiency. The primary function of the LM2853MHX-3.3 is to step down a higher input voltage to a precise 3.3V output, making it suitable for powering digital circuits and microprocessors.
The 20 pins include connections for input voltage, output voltage, ground, enable, feedback, and compensation, among others. These pins allow for external component connections to fine-tune the performance of the regulator for specific applications. The device typically features an enable pin to turn the regulator on or off, a feedback pin for setting the output voltage, and compensation pins for optimizing stability and transient response.
For detailed pin functions and configurations, refer to the specific datasheet of the LM2853MHX-3.3, provided by the manufacturer.
The 20 pins include connections for input voltage, output voltage, ground, enable, feedback, and compensation, among others. These pins allow for external component connections to fine-tune the performance of the regulator for specific applications. The device typically features an enable pin to turn the regulator on or off, a feedback pin for setting the output voltage, and compensation pins for optimizing stability and transient response.
For detailed pin functions and configurations, refer to the specific datasheet of the LM2853MHX-3.3, provided by the manufacturer.
Manufacturer
The LM2853MHX-3.3 is manufactured by Texas Instruments. Texas Instruments (TI) is a global technology company that designs and manufactures semiconductors and various integrated circuits. It is one of the largest semiconductor companies in the world and is known for its focus on analog chips and embedded processors, which are used in a wide range of electronic devices and applications. TI serves multiple industries, including consumer electronics, automotive, industrial, communications, and enterprise systems.
Application
The LM2853MHX-3.3 is a DC-DC buck converter designed for efficient power management in electronic devices. Its application areas include powering microprocessors, DSPs, FPGAs, and other digital logic circuits. It is suitable for use in telecommunications equipment, networking devices, and industrial machinery. The converter is also used in consumer electronics, such as set-top boxes and gaming consoles, to regulate power supply. Its compact size and high efficiency make it ideal for portable and battery-powered devices. Additionally, it can be applied in automotive electronics for managing power in infotainment systems and other car electronics.
Package
The LM2853MHX-3.3 is a voltage regulator with a surface-mount package type called "HTSSOP" (Heat Sink Thin Shrink Small Outline Package). This package is designed to provide good thermal performance and is typically used in compact electronic applications.
