TPS54331D

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TPS54331D

IC REG BUCK ADJUSTABLE 3A 8SOIC

  • Manufacturer
  • Mfr. Part #TPS54331D
  • Package SOIC (D)-8
  • Datasheet
  • In Stock3403

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Specifications

Package Tube
Series Eco-Mode™
ProductStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 3.5V
Voltage-Input(Max) 28V
Voltage-Output(Min/Fixed) 0.8V
Voltage-Output(Max) 25V
Current-Output 3A
Frequency-Switching 570kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 150°C (TJ)
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

Overview

Description

The TPS54331D is a step-down (buck) DC-DC converter from Texas Instruments, designed for high-efficiency power supply solutions. It is part of the TPS54331 series, which is known for its ability to deliver up to 3 A of continuous output current. The device operates with a wide input voltage range from 3.5 V to 28 V, making it suitable for various applications, including consumer electronics, industrial equipment, and automotive systems.
Key features of the TPS54331D include a high switching frequency of 570 kHz, which allows for smaller external components and a more compact design. The converter also supports an adjustable output voltage range from 0.8 V to 25 V, ensuring flexibility for different power requirements. Its integrated MOSFETs contribute to high efficiency and reduced external component count.
The TPS54331D incorporates various protection features, such as overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable and safe operation. Its small package size and thermal performance make it ideal for space-constrained applications. Overall, the TPS54331D is a versatile and efficient solution for designing compact power supplies.

Features

The TPS54331D is a step-down DC-DC converter from Texas Instruments. It features a 3.5 V to 28 V input voltage range and delivers an adjustable output voltage as low as 0.8 V. It supports up to 3 A output current. The device utilizes a high-efficiency synchronous switching topology, operating at a fixed frequency of 570 kHz, which helps minimize external component size while maintaining efficiency across a wide load range.
The TPS54331D integrates a high-side MOSFET and employs internal compensation, reducing the need for additional external components. It also features current-mode control for easy loop stabilization and fast transient response. An adjustable Soft-Start pin allows for control over the startup sequence, preventing inrush current issues.
Protection features include thermal shutdown, cycle-by-cycle current limit, and under-voltage lockout. It also provides an enable pin for easy power sequencing and a power-good output to monitor the output voltage. The package type is a small, thermally enhanced 8-pin SOIC. These features make it suitable for applications in consumer electronics, industrial equipment, and distributed power systems.

Package

The TPS54331D is a step-down DC-DC converter from Texas Instruments, provided in an 8-pin SOIC (Small Outline Integrated Circuit) package with PowerPAD. This package type allows for efficient thermal performance and compact size ideal for surface mounting on printed circuit boards.

Pinout

The TPS54331D is a 3-A, 28-V step-down voltage regulator from Texas Instruments. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a brief description of each pin function:
1. BOOT (Pin 1): Supplies a bootstrap voltage for the high-side MOSFET driver. A bootstrap capacitor is connected between this pin and the SW pin.
2. VIN (Pin 2): Input voltage supply pin for the device. Connect this to the input voltage source.
3. EN (Pin 3): Enable pin. Used to enable or disable the device. A high level enables the device, while a low level disables it.
4. SS/TR (Pin 4): Soft-start/tracking pin. Connect a capacitor to this pin to set the soft-start timing.
5. COMP (Pin 5): Compensation pin. Used for external compensation of the control loop.
6. GND (Pin 6): Ground pin. The ground reference for the device.
7. VSENSE (Pin 7): Feedback voltage sense pin. Connect this to the output voltage to regulate the desired output.
8. SW (Pin 8): Switch node pin. Connect this to the inductor and bootstrap capacitor.
This configuration is designed to provide efficient power conversion in a compact form factor suitable for a range of applications.

Manufacturer

The TPS54331D is manufactured by Texas Instruments (TI). Texas Instruments is a technology company based in Dallas, Texas, known for designing and manufacturing semiconductors and integrated circuits. TI's products are widely used in various electronic systems, including industrial, automotive, personal electronics, and communications infrastructure. The company is a leader in the analog and embedded processing sectors, providing solutions that enhance the performance and efficiency of electronic devices.

Application

The TPS54331D is a step-down DC-DC converter commonly used in various applications, including consumer electronics, industrial automation, telecommunications, and automotive systems. Its main functions are to efficiently convert higher input voltages to lower output voltages, making it suitable for powering microcontrollers, sensors, and other low-voltage devices within these systems. Its high efficiency and compact size make it ideal for use in battery-powered devices and space-constrained environments.

Equivalent

The TPS54331D is a 3A, 28V, step-down (buck) converter from Texas Instruments. Equivalent products from other manufacturers include:
1. LM2596 by Texas Instruments.
2. LMR33630 by Texas Instruments.
3. MP1584 by Monolithic Power Systems.
4. LM2576 by Texas Instruments.
5. AP1509 by Diodes Incorporated.
These equivalents may differ slightly in specifications, so it's important to verify compatibility with your specific requirements.

Shipping

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UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

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