TPS54428DDAR

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TPS54428DDAR

+Nomenclature

IC REG BUCK ADJUSTABLE 4A 8SOPWR

  • FabricantTexas Instruments

  • Pièce fabricant #TPS54428DDAR

  • Package HSOP-8

  • En stock3935

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Spécifications

Attribut Valeur
Package Tape & Reel (TR),Cut Tape (CT)
Series D-CAP2™, Eco-Mode™
ProductStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 4.5V
Voltage-Input(Max) 18V
Voltage-Output(Min/Fixed) 0.76V
Voltage-Output(Max) 7V
Current-Output 4A
Frequency-Switching 650kHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 8-PowerSOIC (0.154, 3.90mm Width)

Présentation

Description

The TPS54428DDAR is a synchronous step-down DC-DC converter designed by Texas Instruments. It is engineered to efficiently convert a higher input voltage to a lower output voltage, making it suitable for powering a variety of electronic applications. The device supports an input voltage range from 4.5 V to 18 V and can deliver up to 4 A of continuous output current. It operates at a fixed switching frequency of 700 kHz, which helps in reducing the size of external components and achieving a compact design.
Key features of the TPS54428 include high efficiency across a broad load range, integrated MOSFETs, and advanced protection features like over-current protection, thermal shutdown, and undervoltage lockout. The converter also supports adjustable output voltage, providing flexibility for different application requirements.
The TPS54428DDAR comes in an 8-pin SO PowerPAD package, which enhances thermal performance. Its compact size and robust feature set make it ideal for use in consumer electronics, telecommunications, and industrial applications.

Equivalent

The TPS54428DDAR is a DC-DC buck converter from Texas Instruments. Equivalent products might include:
1. LM2675 from Texas Instruments.
2. MP1584 from MPS (Monolithic Power Systems).
3. LM2596 from Texas Instruments.
4. LMR16006 from Texas Instruments.
5. RT8250 from Richtek.
These alternatives may vary in specifications like input voltage range, output current, and efficiency, so it's essential to compare their detailed datasheets to ensure compatibility with specific application requirements.

Features

The TPS54428DDAR is a DC-DC buck converter designed by Texas Instruments. Key features include:
1. Input Voltage Range: It supports a wide input voltage range of 4.5 V to 18 V, making it suitable for various applications.
2. Output Voltage: The device can be configured to deliver an adjustable output voltage as low as 0.8 V, with precise regulation.
3. Output Current: Capable of supplying up to 4 A of continuous output current, suitable for low to medium power applications.
4. High Efficiency: Utilizes a synchronous buck converter design to achieve high efficiency, reducing heat generation and improving performance.
5. Switching Frequency: Operates at a fixed frequency of 700 kHz, optimizing the balance between efficiency and component size.
6. Protection Features: Includes over-current protection, thermal shutdown, and under-voltage lockout to ensure device reliability.
7. Soft Start: Features a soft-start function to prevent inrush current during startup.
8. Package: Available in an 8-pin SO PowerPAD package, facilitating efficient thermal management.
These features make the TPS54428DDAR suitable for applications such as telecommunications, industrial equipment, and consumer electronics.

Pinout

The TPS54428DDAR is a step-down DC-DC converter integrated circuit from Texas Instruments. It comes in an 8-pin SO PowerPAD package. Here is a brief overview of its pin functions:
1. BOOT: Bootstrap capacitor connection for the high-side driver.
2. VIN: Input supply voltage pin, which allows the IC to step down the voltage to the desired output level.
3. SW: Switch node, which connects to the external inductor and provides the switched output signal.
4. GND: Ground pin, common ground connection for the IC.
5. FB: Feedback pin, used to set the output voltage through an external resistor divider.
6. COMP: Compensation pin, used for loop compensation with an external RC network.
7. EN: Enable pin, which turns the device on or off based on the voltage applied.
8. RT/CLK: Resistor Timing/Clock pin, used to set the switching frequency or synchronize to an external clock.
These pins facilitate the efficient operation of the TPS54428, allowing it to regulate output voltage with high performance.

Manufacturer

The TPS54428DDAR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide array of electronic components, including integrated circuits and analog devices. TI is renowned for its innovations in the semiconductor space, providing solutions for various applications such as automotive, industrial, personal electronics, and communications equipment. The company focuses on developing technologies that facilitate efficient power management, signal processing, and connectivity, serving a broad range of industries with its wide portfolio of products.

Application

The TPS54428DDAR is a synchronous buck converter primarily used in applications that require efficient step-down voltage conversion. Key application areas include power management in telecommunications, networking, and data communication equipment. It is also used in consumer electronics, computing peripherals, and industrial automation systems. The device supports applications that need a stable power supply from a higher-voltage source, such as powering microcontrollers, FPGAs, ASICs, and other digital circuits. Its compact size and high efficiency make it suitable for space-constrained environments requiring reliable power delivery.

Package

The TPS54428DDAR is a DC-DC converter from Texas Instruments, provided in an 8-pin, plastic HTSSOP (Thermally Enhanced Thin Shrink Small Outline Package) with a PowerPAD. This package allows for efficient heat dissipation, crucial for high-performance applications in compact electronic designs.

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