Overview
The L78L33CD-TR is a three-terminal positive voltage regulator produced by STMicroelectronics. This component is part of the L78L series, known for its robust design and reliability. The L78L33CD-TR is specifically configured to provide a fixed output voltage of 3.3V and can deliver up to 100 mA of output current. It features internal current limiting and thermal shutdown, making it essentially indestructible when adequate heat-sinking is provided. This regulator is designed for use in a wide range of applications, including local or on-card regulation, to eliminate noise and distribution problems associated with single-point regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.3 | V |
| Output Current | Up to 100 | mA |
| Input Voltage Range | 5.3 to 20 | V |
| Line Regulation | 150 mV (VI = 5.4 to 20 V, TJ = 25 °C) | mV |
| Load Regulation | 60 mV (IO = 1 to 100 mA, TJ = 25 °C) | mV |
| Quiescent Current | 6 mA (TJ = 25 °C), 5.5 mA (TJ = 125 °C) | mA |
| Dropout Voltage | 1.7 V | V |
| Operating Temperature Range | 0 to 125 | °C |
| Package Type | SO-8 | |
| RoHS Compliance | Ecopack3 |
Key Features
- Internal current limiting and thermal shutdown for enhanced reliability and protection.
- No external components required for operation.
- Available in ±4% (A) or ±8% (C) selection for output voltage tolerance.
- Low quiescent current and low noise output.
- Can be used as a replacement for Zener diode/resistor combinations.
- Compact SO-8 package suitable for surface mount technology (SMT) assembly.
Applications
- Local or on-card voltage regulation to eliminate noise and distribution problems.
- Use with power pass elements to create high-current voltage regulators.
- Replacement for Zener diode/resistor combinations in various circuits.
- General-purpose voltage regulation in electronic devices and systems.
Q & A
- What is the output voltage of the L78L33CD-TR?
The output voltage of the L78L33CD-TR is 3.3V.
- What is the maximum output current of the L78L33CD-TR?
The maximum output current is up to 100 mA.
- What are the key protection features of the L78L33CD-TR?
The key protection features include internal current limiting and thermal shutdown.
- Does the L78L33CD-TR require any external components for operation?
No, the L78L33CD-TR does not require any external components for operation.
- What is the operating temperature range of the L78L33CD-TR?
The operating temperature range is from 0 to 125 °C.
- What package type is the L78L33CD-TR available in?
The L78L33CD-TR is available in an SO-8 package.
- Is the L78L33CD-TR RoHS compliant?
- What are some common applications of the L78L33CD-TR?
- How does the L78L33CD-TR compare to Zener diode/resistor combinations?
The L78L33CD-TR offers lower quiescent current and lower noise compared to Zener diode/resistor combinations.
- What is the typical quiescent current of the L78L33CD-TR?
The typical quiescent current is 6 mA at 25 °C and 5.5 mA at 125 °C.
