STMicroelectronics

LE33ABZ  

Linear & Switching Voltage Regulators

LE33ABZ Description

The LE33ABZ is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 3.3V and a maximum output current of 100mA. This regulator is housed in a TO92-3 package, making it suitable for through-hole mounting. Despite its small form factor, the LE33ABZ delivers robust performance with a low dropout voltage of 0.5V at 100mA, ensuring efficient operation even at low input voltages. It features a maximum input voltage of 18V and a quiescent current of just 1 mA, making it ideal for applications where power efficiency is critical. The regulator also includes over-current and over-temperature protection features, enhancing its reliability and safety in various operating conditions.

LE33ABZ Features

• Fixed Output Voltage: The LE33ABZ provides a stable 3.3V output voltage, essential for powering a wide range of electronic devices and circuits.
• High Efficiency: With a low dropout voltage of 0.5V at 100mA, the regulator maintains high efficiency, particularly in applications with limited input voltage headroom.
• Low Quiescent Current: The regulator operates with a quiescent current of only 1 mA, making it suitable for low-power applications where minimizing power consumption is crucial.
• Protection Features: Over-current and over-temperature protection ensure the regulator's longevity and reliability, safeguarding against potential damage from excessive current or heat.
• Power Supply Rejection Ratio (PSRR): The LE33ABZ offers a PSRR of 80dB at 120Hz, decreasing to 60dB at 10kHz, which helps in filtering out noise and maintaining a clean output voltage.
• Compliance and Packaging: The regulator is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It is available in bulk packaging, suitable for large-scale production and distribution.
• Mounting Type: Through-hole mounting ensures mechanical stability and ease of integration into various electronic assemblies.

LE33ABZ Applications

The LE33ABZ is ideal for a variety of applications where a stable 3.3V supply is required. Its low dropout voltage and low quiescent current make it particularly suitable for battery-powered devices, portable electronics, and embedded systems where power efficiency is paramount. The regulator's robust protection features and compliance with industry standards make it a reliable choice for consumer electronics, automotive electronics, and industrial control systems. Its through-hole mounting type and TO92-3 package ensure easy integration into existing designs, making it a versatile component for both prototyping and mass production.

Conclusion of LE33ABZ

The LE33ABZ from STMicroelectronics is a high-performance linear voltage regulator that offers a stable 3.3V output with a maximum current of 100mA. Its low dropout voltage, low quiescent current, and robust protection features make it an excellent choice for applications requiring efficient power management and reliability. Despite being marked as obsolete, the LE33ABZ remains a valuable component for existing designs and legacy systems. Its compliance with environmental and safety standards ensures its suitability for a wide range of industries. For applications needing a compact, efficient, and reliable voltage regulator, the LE33ABZ stands out as a superior option.

LE33ABZ Documents

Download datasheets and manufacturer documentation for LE33ABZ

Datasheets :

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HTML Datasheet :

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