Спецификации
| Атрибут | Ценность |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | Eco-Mode™ |
| ProductStatus | Not For New Designs |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck, Split Rail |
| 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 | 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) |
Обзор
Description
The TPS54540DDAR is a high-efficiency, step-down (buck) switch mode power supply regulator from Texas Instruments. It is designed to convert higher input voltages, ranging from 4.5 V to 42 V, into a lower, regulated output voltage, making it suitable for a wide array of applications in industrial, automotive, and consumer electronics sectors. This device can deliver up to 5 A of continuous output current, which is ideal for powering digital circuits or systems-on-a-chip.
Key features include an adjustable output voltage, a high switching frequency, and internal compensation to simplify design and reduce external component count. The TPS54540DDAR also incorporates a range of protection features, such as undervoltage lockout, current limiting, and thermal shutdown, to enhance reliability and safeguard against potential operational issues. The compact 8-pin SO PowerPAD™ package helps optimize board space, making it ideal for space-constrained designs. Overall, the TPS54540DDAR provides a robust solution for efficient power conversion in demanding applications.
Key features include an adjustable output voltage, a high switching frequency, and internal compensation to simplify design and reduce external component count. The TPS54540DDAR also incorporates a range of protection features, such as undervoltage lockout, current limiting, and thermal shutdown, to enhance reliability and safeguard against potential operational issues. The compact 8-pin SO PowerPAD™ package helps optimize board space, making it ideal for space-constrained designs. Overall, the TPS54540DDAR provides a robust solution for efficient power conversion in demanding applications.
Equivalent
The TPS54540DDAR is a 42-V, 5-A Step-Down Regulator from Texas Instruments. Equivalent products include:
1. LM2678 from Texas Instruments – 5A, 40V Step-Down Regulator.
2. LMR33630 from Texas Instruments – 36V, 3A SIMPLE SWITCHER Buck Converter.
3. LMR36506 from Texas Instruments – 65V, 0.6A Synchronous Step-Down Converter.
4. LT8640 from Analog Devices – 42V, 5A, Synchronous Step-Down Regulator.
5. MP2459 from Monolithic Power Systems – 42V, 5A Step-Down Converter.
Always verify electrical and thermal characteristics to ensure compatibility with your application.
1. LM2678 from Texas Instruments – 5A, 40V Step-Down Regulator.
2. LMR33630 from Texas Instruments – 36V, 3A SIMPLE SWITCHER Buck Converter.
3. LMR36506 from Texas Instruments – 65V, 0.6A Synchronous Step-Down Converter.
4. LT8640 from Analog Devices – 42V, 5A, Synchronous Step-Down Regulator.
5. MP2459 from Monolithic Power Systems – 42V, 5A Step-Down Converter.
Always verify electrical and thermal characteristics to ensure compatibility with your application.
Features
The TPS54540DDAR is a step-down (buck) converter from Texas Instruments. It features a wide input voltage range of 5.5V to 42V, making it suitable for various applications. The device delivers an output current of up to 5A and supports adjustable output voltage from 0.8V to 37V. It operates with a high switching frequency of up to 500 kHz, allowing for smaller external components and efficient power conversion. The TPS54540DDAR includes an integrated high-side MOSFET, reducing the need for external components and simplifying the design. It also offers features like current mode control for efficient load regulation, internal compensation to minimize the need for external compensation components, and an adjustable soft-start to manage inrush current during startup. The device includes various protection features such as thermal shutdown, overcurrent protection, and undervoltage lockout. It is available in an 8-pin SO PowerPAD package, providing good thermal performance. These features make it suitable for applications like industrial power systems, consumer electronics, and telecom infrastructure.
Pinout
The TPS54540DDAR is a step-down DC-DC converter manufactured by Texas Instruments. It comes in an 8-pin SO PowerPAD package. Here is a brief overview of its pin functions:
1. VIN: Input voltage supply.
2. EN: Enable pin to turn the device on or off.
3. SS/TR: Soft start and tracking input.
4. RT/CLK: Sets the switching frequency or synchronizes with an external clock.
5. GND: Ground connection.
6. BOOT: Bootstrap capacitor connection for the high-side FET driver.
7. PH: Switch node connected to the output inductor.
8. VSENSE: Feedback voltage sense input.
The TPS54540DDAR is optimized for a wide input voltage range and delivers a continuous output current of up to 5 A, suitable for various applications such as industrial power systems and distributed power architectures.
1. VIN: Input voltage supply.
2. EN: Enable pin to turn the device on or off.
3. SS/TR: Soft start and tracking input.
4. RT/CLK: Sets the switching frequency or synchronizes with an external clock.
5. GND: Ground connection.
6. BOOT: Bootstrap capacitor connection for the high-side FET driver.
7. PH: Switch node connected to the output inductor.
8. VSENSE: Feedback voltage sense input.
The TPS54540DDAR is optimized for a wide input voltage range and delivers a continuous output current of up to 5 A, suitable for various applications such as industrial power systems and distributed power architectures.
Manufacturer
The TPS54540DDAR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and integrated circuits. TI is known for its innovation and leadership in the semiconductor industry, providing products and solutions for various sectors, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. They are recognized for their high-performance analog and embedded processing products. The TPS54540DDAR, in particular, is a step-down regulator from their extensive portfolio of power management ICs.
Application
The TPS54540DDAR is a DC-DC buck converter designed for high-efficiency power supply applications. It is commonly used in areas such as industrial automation, automotive systems, telecommunications equipment, and consumer electronics. The converter is suitable for applications requiring efficient step-down voltage conversion from higher input voltages, making it ideal for powering processors, FPGAs, and other digital circuits. Its wide input voltage range and robust output capabilities make it versatile for use in battery-powered devices, distributed power systems, and point-of-load power regulation. Additionally, its thermal performance and protection features enhance reliability in demanding environments.
Package
The TPS54540DDAR is a DC-DC converter from Texas Instruments, housed in an 8-pin SO PowerPAD package. This type of package is designed for improved thermal performance and is commonly used in power management applications to efficiently convert and regulate voltages.
