KA78R33

1A fixed 3.3V low dropout voltage regulators in TO-220F package

Manufacturer: ['fairchild', 'rochester', 'onsemi', 'freescale']

series introduction

The **KA78R33 Series** is a family of high-performance, low-dropout (LDO) voltage regulators designed to deliver stable and reliable power supply solutions for a wide range of electronic applications. These regulators are engineered to provide a fixed output voltage of 3.3V, making them ideal for powering sensitive components in modern electronic systems. With their advanced design and robust construction, the KA78R33 Series ensures consistent performance even in challenging environments.

One of the standout features of the KA78R33 Series is its low dropout voltage, which allows the regulator to maintain a stable output even when the input voltage is only slightly higher than the output voltage. This characteristic makes it highly efficient and suitable for battery-powered devices or systems with fluctuating input voltages. Additionally, the series incorporates built-in overcurrent protection, thermal shutdown, and short-circuit protection, ensuring the safety and longevity of both the regulator and the connected circuitry.

The KA78R33 Series is designed with a compact and thermally efficient package, enabling easy integration into space-constrained applications. Its low quiescent current and minimal heat dissipation make it an excellent choice for energy-sensitive designs, such as portable electronics, IoT devices, and embedded systems. Furthermore, the series is capable of handling input voltages up to 35V, providing flexibility for use in a variety of power supply configurations.

Typical applications for the KA78R33 Series include power management in consumer electronics, automotive systems, industrial control equipment, and telecommunications infrastructure. Its ability to deliver a stable 3.3V output under varying load conditions makes it particularly well-suited for powering microcontrollers, sensors, and other low-voltage components. Whether used in compact handheld devices or large-scale industrial systems, the KA78R33 Series offers a reliable and efficient solution for maintaining consistent power delivery.

In summary, the KA78R33 Series combines high efficiency, robust protection features, and a compact design to meet the demands of modern electronic systems. Its versatility and reliability make it a go-to choice for engineers and designers seeking a dependable voltage regulation solution across a wide range of industries.

Images for reference

KA78RxxC Series Through Hole

KA78RxxC Series Through Hole

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Datasheets

Partlist

KA78R33CTSTU
KA78R33CTU
KA78R33CYDTU
KA78R33TSTU
KA78R33TU
KA78R33YDTU