Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | Eco-Mode™ |
| ProductStatus | Not For New Designs |
| 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 TPS54340DDAR is a high-efficiency, step-down (buck) DC-DC converter from Texas Instruments. It is part of the TPS54340 series, designed to convert higher voltage DC inputs to lower voltage outputs, suitable for powering a wide range of electronic devices. The converter operates with a 42 V input voltage rating and can deliver up to 3.5 A of continuous output current. The device integrates a high-side MOSFET and features a wide input voltage range, making it versatile for various applications.
Key features include a 100 kHz to 2.5 MHz adjustable switching frequency, which allows for optimization between efficiency and solution size, and an adaptive on-time control architecture that improves transient response. It also includes features like cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout to ensure robust operation and protect against faults.
The TPS54340DDAR is housed in a thermally enhanced 10-pin PowerPAD package, supporting efficient heat dissipation. This makes it suitable for industrial, automotive, and consumer electronics applications where compact size and high reliability are essential.
Key features include a 100 kHz to 2.5 MHz adjustable switching frequency, which allows for optimization between efficiency and solution size, and an adaptive on-time control architecture that improves transient response. It also includes features like cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout to ensure robust operation and protect against faults.
The TPS54340DDAR is housed in a thermally enhanced 10-pin PowerPAD package, supporting efficient heat dissipation. This makes it suitable for industrial, automotive, and consumer electronics applications where compact size and high reliability are essential.
Equivalent
The TPS54340DDAR is a DC-DC buck converter from Texas Instruments. Equivalent products include:
1. LM2596S-ADJ by Texas Instruments - A popular adjustable regulator.
2. LT8610 by Analog Devices - Offers similar voltage and current specifications.
3. MP1584 by Monolithic Power Systems - A compact buck converter with similar performance.
When selecting an equivalent, verify the electrical specifications and thermal performance, as they can vary between manufacturers.
1. LM2596S-ADJ by Texas Instruments - A popular adjustable regulator.
2. LT8610 by Analog Devices - Offers similar voltage and current specifications.
3. MP1584 by Monolithic Power Systems - A compact buck converter with similar performance.
When selecting an equivalent, verify the electrical specifications and thermal performance, as they can vary between manufacturers.
Features
The TPS54340DDAR is a step-down DC-DC converter from Texas Instruments, designed for high-efficiency power conversion. Key features include:
1. Wide Input Voltage Range: It supports an input voltage from 4.5 V to 42 V, making it versatile for various applications.
2. Output Current: Capable of delivering up to 3.5 A continuous output current.
3. Adjustable Output Voltage: The output voltage can be adjusted using an external resistor divider.
4. High Efficiency: Offers efficiencies up to 95%, reducing heat generation and improving performance.
5. Switching Frequency: Programmable switching frequency from 100 kHz to 2.5 MHz, allowing design flexibility.
6. Integrated High-Side MOSFET: Enhances efficiency and reduces external component count.
7. Soft Start Capability: Adjustable soft start to limit inrush current during power-up.
8. Protection Features: Includes cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout for enhanced reliability.
9. Package: Available in an 8-pin SO PowerPAD (DDA) package, optimizing thermal performance.
This device is suitable for industrial, automotive, and consumer electronics applications needing robust performance and reliability.
1. Wide Input Voltage Range: It supports an input voltage from 4.5 V to 42 V, making it versatile for various applications.
2. Output Current: Capable of delivering up to 3.5 A continuous output current.
3. Adjustable Output Voltage: The output voltage can be adjusted using an external resistor divider.
4. High Efficiency: Offers efficiencies up to 95%, reducing heat generation and improving performance.
5. Switching Frequency: Programmable switching frequency from 100 kHz to 2.5 MHz, allowing design flexibility.
6. Integrated High-Side MOSFET: Enhances efficiency and reduces external component count.
7. Soft Start Capability: Adjustable soft start to limit inrush current during power-up.
8. Protection Features: Includes cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout for enhanced reliability.
9. Package: Available in an 8-pin SO PowerPAD (DDA) package, optimizing thermal performance.
This device is suitable for industrial, automotive, and consumer electronics applications needing robust performance and reliability.
Pinout
The TPS54340DDAR is a step-down (buck) DC-DC converter from Texas Instruments. It comes in an 8-pin SOIC package. Here is a brief overview of its pin functions:
1. BOOT: Boost capacitor pin for driving the high-side FET gate.
2. VIN: Input voltage supply pin.
3. EN: Enable pin for the converter. A high level turns the device on.
4. SS/TR: Soft-start/tracking pin. Used to control the soft-start timing or track an external voltage.
5. GND: Ground pin.
6. VSENSE: Feedback voltage pin. Connects to an external resistor divider to set the output voltage.
7. COMP: Compensation pin. Connects to the compensation network to stabilize the control loop.
8. SW: Switch node. Connects to the external inductor.
These pins collectively configure the TPS54340 to provide efficient voltage conversion, with integrated features such as soft-start, enable control, and compensation for stability.
1. BOOT: Boost capacitor pin for driving the high-side FET gate.
2. VIN: Input voltage supply pin.
3. EN: Enable pin for the converter. A high level turns the device on.
4. SS/TR: Soft-start/tracking pin. Used to control the soft-start timing or track an external voltage.
5. GND: Ground pin.
6. VSENSE: Feedback voltage pin. Connects to an external resistor divider to set the output voltage.
7. COMP: Compensation pin. Connects to the compensation network to stabilize the control loop.
8. SW: Switch node. Connects to the external inductor.
These pins collectively configure the TPS54340 to provide efficient voltage conversion, with integrated features such as soft-start, enable control, and compensation for stability.
Manufacturer
The TPS54340DDAR is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is an American technology company headquartered in Dallas, Texas. It is one of the largest semiconductor companies in the world, primarily known for designing and manufacturing semiconductors and integrated circuits. TI's products are used in a wide range of applications, including consumer electronics, automotive, industrial, communication equipment, and personal electronics. The company is recognized for its innovation in analog and embedded processing products.
Application
The TPS54340DDAR is a step-down DC-DC converter used in various applications that require efficient power management. Its primary application areas include industrial power systems, automotive electronics, communications equipment, and consumer electronics. It is particularly suited for use in battery-powered devices due to its high efficiency and low standby power consumption. Additionally, the TPS54340DDAR is used in distributed power systems and point-of-load applications, where precise voltage regulation is crucial. Its robust design, with features like overcurrent protection and thermal shutdown, makes it ideal for use in environments with demanding power requirements.
Package
The TPS54340DDAR is a step-down converter IC from Texas Instruments, housed in an 8-pin SO PowerPAD (DDA) package. This package type includes an exposed pad to enhance thermal performance, making it suitable for high-efficiency applications.
