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PTH04040WAZT

Updated: 2026-07-15

Overview

The PTH04040WAZT is a non-isolated DC-DC power module manufactured by Texas Instruments, designed for point-of-load (POL) applications. It is part of the PTH series, known for its compact size, high efficiency, and reliability. This module is commonly used in telecom, networking, and industrial equipment where stable and efficient power conversion is critical. The PTH04040WAZT supports a wide input voltage range, typically from 4.5V to 14V, and provides an adjustable output voltage, making it versatile for various applications. Its high power density and advanced protection features, such as overcurrent and overtemperature protection, ensure safe and reliable operation in demanding environments.

Structure and Working Principle

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The PTH04040WAZT module integrates a DC-DC converter, control circuitry, and passive components into a single compact package. It operates on a switching regulator principle, converting the input DC voltage to a regulated output voltage with high efficiency. The module uses pulse-width modulation (PWM) to maintain stable output under varying load conditions. Internal components include a power MOSFET, inductor, and capacitors, all optimized for minimal power loss and thermal performance. The module's design ensures low electromagnetic interference (EMI) and complies with industry standards for noise suppression and reliability.

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Key Features

The PTH04040WAZT offers several key features that make it suitable for demanding applications. Its wide input voltage range (4.5V to 14V) allows compatibility with various power sources. The output voltage is adjustable from 0.8V to 3.6V, providing flexibility for different load requirements. The module boasts high efficiency, typically up to 96%, reducing power loss and heat generation. It includes built-in protection mechanisms such as overcurrent, overtemperature, and undervoltage lockout (UVLO), ensuring safe operation. The compact footprint and surface-mount design make it easy to integrate into space-constrained applications.

Application Areas

The PTH04040WAZT is widely used in telecom and networking equipment, such as routers, switches, and base stations, where reliable power conversion is essential. It is also employed in industrial automation systems, including PLCs, motor controllers, and sensors. Other applications include medical devices, test and measurement equipment, and embedded systems. The module's high efficiency and compact size make it ideal for applications requiring stable power in a small form factor. Its versatility and robustness cater to both commercial and industrial environments.

Maintenance and Precautions

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To ensure optimal performance and longevity of the PTH04040WAZT, proper maintenance and precautions are necessary. Adequate heat dissipation is critical; ensure the module is mounted on a PCB with sufficient copper area or use additional heatsinking if required. Avoid exceeding the specified input voltage and current limits to prevent damage. Follow the manufacturer's guidelines for installation and soldering to avoid thermal stress. Regularly inspect for signs of overheating or component degradation, especially in high-temperature environments.

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B2B Procurement Guide

When procuring the PTH04040WAZT in bulk, consider factors such as lead time, supplier reliability, and compliance with industry standards. Verify the authenticity of the product by purchasing from authorized distributors or directly from Texas Instruments. Compare pricing from multiple suppliers, keeping in mind that volume discounts may apply. Ensure the supplier provides adequate technical support and documentation, including datasheets and application notes. Check for availability of evaluation boards or samples to test the module in your specific application before large-scale procurement.

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