Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | Eco-Mode™ |
| ProductStatus | Active |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 4.5V |
| Voltage-Input(Max) | 42V |
| Voltage-Output(Min/Fixed) | 0.8V |
| Voltage-Output(Max) | 41.1V |
| Current-Output | 3.5A |
| Frequency-Switching | 100kHz ~ 2.5MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-PowerSOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The TPS54340BDDAR is a step-down DC-DC converter from Texas Instruments, designed for power management applications. It is capable of delivering up to 3.5 A of continuous output current. The device operates with an input voltage range of 4.5 V to 42 V, making it suitable for various applications, including industrial, automotive, and communication systems.
Key features of the TPS54340BDDAR include high efficiency, a wide input voltage range, and a programmable switching frequency up to 2.5 MHz. It also offers a soft-start function, adjustable output voltage, and several protection mechanisms, such as overcurrent and thermal shutdown protection. The device is built with a DDA package and incorporates a high-side MOSFET, simplifying design and reducing external component count.
The TPS54340BDDAR supports both fixed frequency and Pulse Frequency Modulation (PFM) modes, enabling efficient performance across different load conditions. Its compact design and robust features make it a versatile choice for designers looking to implement efficient and reliable power conversion in their projects.
Key features of the TPS54340BDDAR include high efficiency, a wide input voltage range, and a programmable switching frequency up to 2.5 MHz. It also offers a soft-start function, adjustable output voltage, and several protection mechanisms, such as overcurrent and thermal shutdown protection. The device is built with a DDA package and incorporates a high-side MOSFET, simplifying design and reducing external component count.
The TPS54340BDDAR supports both fixed frequency and Pulse Frequency Modulation (PFM) modes, enabling efficient performance across different load conditions. Its compact design and robust features make it a versatile choice for designers looking to implement efficient and reliable power conversion in their projects.
Equivalent
The TPS54340BDDAR is a DC-DC buck converter from Texas Instruments. Equivalent products include:
1. LM2676S-ADJ - by Texas Instruments
2. LM2596S-ADJ - by Texas Instruments
3. LTC3630A - by Analog Devices
4. MP1495 - by Monolithic Power Systems
5. AP3211 - by Diodes Incorporated
These alternatives offer similar functionalities but may vary in specifications like input voltage range, output current, and efficiency. Always verify compatibility based on your specific application requirements.
1. LM2676S-ADJ - by Texas Instruments
2. LM2596S-ADJ - by Texas Instruments
3. LTC3630A - by Analog Devices
4. MP1495 - by Monolithic Power Systems
5. AP3211 - by Diodes Incorporated
These alternatives offer similar functionalities but may vary in specifications like input voltage range, output current, and efficiency. Always verify compatibility based on your specific application requirements.
Features
The TPS54340BDDAR is a high-performance step-down converter from Texas Instruments. It features a wide input voltage range of 4.5V to 42V, making it suitable for various applications. The converter delivers up to 3.5A of continuous output current. It incorporates an integrated high-side MOSFET, which enhances efficiency and reduces the need for external components.
Key features include a switching frequency adjustable between 100 kHz and 2.5 MHz, allowing for flexibility in design and efficiency optimization. It supports both pulse-skipping and forced continuous conduction modes. The device also includes an adjustable soft-start feature to prevent inrush currents during startup.
Protection features of the TPS54340BDDAR include cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout, ensuring reliable operation under different conditions. The device is available in a 10-pin VSON package, which offers a compact solution for space-constrained applications. Additionally, it is designed for automotive and industrial applications, offering robustness and reliability in demanding environments.
Key features include a switching frequency adjustable between 100 kHz and 2.5 MHz, allowing for flexibility in design and efficiency optimization. It supports both pulse-skipping and forced continuous conduction modes. The device also includes an adjustable soft-start feature to prevent inrush currents during startup.
Protection features of the TPS54340BDDAR include cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout, ensuring reliable operation under different conditions. The device is available in a 10-pin VSON package, which offers a compact solution for space-constrained applications. Additionally, it is designed for automotive and industrial applications, offering robustness and reliability in demanding environments.
Pinout
The TPS54340BDDAR is a DC-DC buck converter from Texas Instruments. It comes in an 8-pin SO PowerPAD package. Here’s a brief overview of the pin functions:
1. BOOT: Connects to a capacitor for the high-side driver boost voltage.
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 rise time or track an external voltage.
5. COMP: Compensation pin for the control loop.
6. GND: Ground pin.
7. PH: Switch node, connected to the inductor.
8. VREG5: Internal 5V regulator output, typically used for internal biasing.
These pins work together to regulate the output voltage by stepping down a higher input voltage efficiently.
1. BOOT: Connects to a capacitor for the high-side driver boost voltage.
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 rise time or track an external voltage.
5. COMP: Compensation pin for the control loop.
6. GND: Ground pin.
7. PH: Switch node, connected to the inductor.
8. VREG5: Internal 5V regulator output, typically used for internal biasing.
These pins work together to regulate the output voltage by stepping down a higher input voltage efficiently.
Manufacturer
The TPS54340BDDAR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of integrated circuits and other electronic components. They are known for producing analog and embedded processing products that are integral in various applications, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI focuses on innovation and development in the semiconductor industry, providing solutions that help advance electronics technology.
Application
The TPS54340BDDAR is a highly efficient step-down DC-DC converter from Texas Instruments. It is commonly used in applications requiring a stable power supply with high conversion efficiency. Key application areas include:
1. Industrial and automotive power systems, where reliable voltage regulation is crucial.
2. Distributed power systems and point-of-load conversions in complex circuits.
3. LED drivers for consistent lighting performance.
4. General-purpose power conditioning for embedded systems.
5. Networking and telecommunications equipment requiring stable power under varying load conditions.
Its wide input voltage range and robust thermal performance make it suitable for environments with fluctuating power demands and challenging thermal conditions.
1. Industrial and automotive power systems, where reliable voltage regulation is crucial.
2. Distributed power systems and point-of-load conversions in complex circuits.
3. LED drivers for consistent lighting performance.
4. General-purpose power conditioning for embedded systems.
5. Networking and telecommunications equipment requiring stable power under varying load conditions.
Its wide input voltage range and robust thermal performance make it suitable for environments with fluctuating power demands and challenging thermal conditions.
Package
The TPS54340BDDAR is a step-down converter integrated circuit from Texas Instruments. It comes in an 8-pin SO PowerPAD™ package, which is a small outline package designed for improved thermal performance and efficient power management in compact designs.
