仕様
| 属性 | 値 |
| Package / Case | Bulk,Tube |
| Part Status | Active |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.2V |
| Voltage - Input (Max) | 28V |
| Voltage - Output (Min/Fixed) | 0.8V |
| Voltage - Output (Max) | 24V |
| Current - Output | 3A |
| Frequency - Switching | 570kHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
概要
Description
The TPS54334DDA is a high-performance buck converter from Texas Instruments, designed for efficient power management in various applications. It provides a step-down DC-DC conversion, taking an input voltage range of 4.5V to 28V and outputting a regulated voltage as low as 0.8V, with a maximum output current of 3A. The device features an integrated high-side MOSFET and supports a high switching frequency, up to 2.5 MHz, which allows for the use of smaller external components and compact designs.
Key features include high efficiency across a wide load range, internal soft-start, and adjustable frequency to optimize performance for different applications. The TPS54334DDA also offers various protections, such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable operation under different conditions. Its small DDA (HSOP) package with a PowerPAD enhances thermal performance in space-constrained designs. This converter is commonly used in industrial, automotive, and computing applications where efficient, compact, and reliable voltage regulation is crucial.
Key features include high efficiency across a wide load range, internal soft-start, and adjustable frequency to optimize performance for different applications. The TPS54334DDA also offers various protections, such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable operation under different conditions. Its small DDA (HSOP) package with a PowerPAD enhances thermal performance in space-constrained designs. This converter is commonly used in industrial, automotive, and computing applications where efficient, compact, and reliable voltage regulation is crucial.
Equivalent
Equivalent products to the TPS54334DDA, a step-down DC-DC converter, include:
1. LM2596 - by Texas Instruments, a popular DC-DC step-down converter.
2. MP1584 - by Monolithic Power Systems, a compact synchronous buck converter.
3. LM2678 - by Texas Instruments, a high-efficiency step-down voltage regulator.
4. LT8640 - by Analog Devices, offering high efficiency and fast transient response.
5. R-78E - by Recom Power, a switching regulator with a compact form factor.
These alternatives offer similar functionalities with varying specifications.
1. LM2596 - by Texas Instruments, a popular DC-DC step-down converter.
2. MP1584 - by Monolithic Power Systems, a compact synchronous buck converter.
3. LM2678 - by Texas Instruments, a high-efficiency step-down voltage regulator.
4. LT8640 - by Analog Devices, offering high efficiency and fast transient response.
5. R-78E - by Recom Power, a switching regulator with a compact form factor.
These alternatives offer similar functionalities with varying specifications.
Features
The TPS54334DDA is a step-down (buck) converter from Texas Instruments. Key features include:
1. Input Voltage Range: Operates from 4.5V to 28V, making it suitable for a variety of applications.
2. Output Current: Provides up to 3A of continuous output current.
3. Switching Frequency: Fixed frequency operation at 500 kHz, optimizing size and performance.
4. Efficiency: High efficiency with a low RDS(on) integrated switch and low quiescent current.
5. Thermal Protection: Includes thermal shutdown for device protection.
6. Soft Start: Programmable soft start to limit inrush current during power-up.
7. Protection Features: Overcurrent protection, undervoltage lockout, and overvoltage protection.
8. Package: Available in an 8-pin SO PowerPAD package for enhanced thermal performance.
These features make the TPS54334DDA well-suited for applications such as consumer electronics, computing, and industrial equipment that require efficient power conversion and robust protection mechanisms.
1. Input Voltage Range: Operates from 4.5V to 28V, making it suitable for a variety of applications.
2. Output Current: Provides up to 3A of continuous output current.
3. Switching Frequency: Fixed frequency operation at 500 kHz, optimizing size and performance.
4. Efficiency: High efficiency with a low RDS(on) integrated switch and low quiescent current.
5. Thermal Protection: Includes thermal shutdown for device protection.
6. Soft Start: Programmable soft start to limit inrush current during power-up.
7. Protection Features: Overcurrent protection, undervoltage lockout, and overvoltage protection.
8. Package: Available in an 8-pin SO PowerPAD package for enhanced thermal performance.
These features make the TPS54334DDA well-suited for applications such as consumer electronics, computing, and industrial equipment that require efficient power conversion and robust protection mechanisms.
Pinout
The TPS54334DDA is a DC-DC buck converter integrated circuit from Texas Instruments. It typically comes in an 8-pin SO PowerPAD package. The primary function of this device is to convert a higher DC input voltage to a lower DC output voltage efficiently. It features a 3.5 A, 28 V step-down converter with an integrated high-side MOSFET.
Here is a brief description of the pins:
1. BOOT: Bootstrap capacitor connection for the high-side FET driver.
2. VIN: Input voltage supply pin.
3. EN: Enable pin to turn the device on or off.
4. SS/TR: Soft-start and Tracking pin to control the startup time.
5. COMP: Compensation pin for external compensation network.
6. GND: Ground pin.
7. PH: Switch node pin, connected to the inductor.
8. VSENSE: Feedback input pin to set the output voltage.
These pins facilitate various functions like enabling the chip, controlling startup behavior, and setting output voltage, which are crucial for achieving efficient power conversion in different applications.
Here is a brief description of the pins:
1. BOOT: Bootstrap capacitor connection for the high-side FET driver.
2. VIN: Input voltage supply pin.
3. EN: Enable pin to turn the device on or off.
4. SS/TR: Soft-start and Tracking pin to control the startup time.
5. COMP: Compensation pin for external compensation network.
6. GND: Ground pin.
7. PH: Switch node pin, connected to the inductor.
8. VSENSE: Feedback input pin to set the output voltage.
These pins facilitate various functions like enabling the chip, controlling startup behavior, and setting output voltage, which are crucial for achieving efficient power conversion in different applications.
Manufacturer
The TPS54334DDA is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and systems. Their products are used in various applications, including consumer electronics, industrial equipment, automotive systems, and communication devices. Texas Instruments is known for its analog and embedded processing products, and it provides tools and resources for engineers to innovate and develop new technologies.
Application
The TPS54334DDA is a DC-DC step-down (buck) converter designed for power management in various applications. Key areas include:
1. Consumer Electronics: Supplies efficient power regulation for devices like televisions, set-top boxes, and home audio systems.
2. Industrial Equipment: Powers control systems, sensors, and instrumentation, ensuring stable operation in demanding environments.
3. Telecommunications: Provides reliable power for network equipment, including routers and switches.
4. Automotive Systems: Used in infotainment systems and electronic control units to convert battery voltage to lower levels.
5. Embedded Systems: Supports microcontrollers and digital signal processors in IoT devices and other embedded applications.
Its high efficiency and compact form factor make it versatile across these sectors.
1. Consumer Electronics: Supplies efficient power regulation for devices like televisions, set-top boxes, and home audio systems.
2. Industrial Equipment: Powers control systems, sensors, and instrumentation, ensuring stable operation in demanding environments.
3. Telecommunications: Provides reliable power for network equipment, including routers and switches.
4. Automotive Systems: Used in infotainment systems and electronic control units to convert battery voltage to lower levels.
5. Embedded Systems: Supports microcontrollers and digital signal processors in IoT devices and other embedded applications.
Its high efficiency and compact form factor make it versatile across these sectors.
Package
The TPS54334DDA is a DC-DC buck converter manufactured by Texas Instruments. It comes in an 8-pin SO PowerPAD (DDA) package, which is designed for efficient thermal performance and compact size. This package type facilitates surface-mount technology (SMT) applications, offering a balance between size and thermal handling capabilities.
