Overview
The L78L33ABZ-AP is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78L series. This regulator is designed to provide a fixed output voltage of 3.3V and is known for its robustness and reliability. It features internal current limiting and thermal shutdown, making it essentially indestructible if an adequate heat sink is provided. The L78L33ABZ-AP is suitable for 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 |
|---|---|
| Type of integrated circuit | Voltage regulator |
| Kind of voltage regulator | Fixed, linear |
| Output voltage | 3.3V |
| Output current | Up to 100 mA |
| Dropout voltage | 1.7 V |
| Input voltage range | 5.3 V to 20 V |
| Case | TO92 |
| Mounting | Through-Hole Technology (THT) |
| Operating temperature range | -40°C to 125°C |
| Tolerance | ±4% |
| Number of channels | 1 |
Key Features
- Output current up to 100 mA
- Fixed output voltage of 3.3V
- Internal current limiting and thermal shutdown for protection
- Short-circuit protection
- No external components required
- Available in ±4% (A) or ±8% (C) selection
- Low quiescent current and low noise
Applications
The L78L33ABZ-AP is versatile and can be used in various applications, including:
- Local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation.
- Replacement for Zener diode/resistor combinations, offering improvements in quiescent current and noise reduction.
- Use with power pass elements to create high-current voltage regulators.
- Industrial and consumer electronics where stable and regulated voltage is required.
Q & A
- What is the output voltage of the L78L33ABZ-AP?
The output voltage of the L78L33ABZ-AP is 3.3V.
- What is the maximum output current of the L78L33ABZ-AP?
The maximum output current is up to 100 mA.
- What is the input voltage range for the L78L33ABZ-AP?
The input voltage range is from 5.3 V to 20 V.
- What type of protection does the L78L33ABZ-AP have?
The L78L33ABZ-AP has internal current limiting and thermal shutdown, as well as short-circuit protection.
- What is the operating temperature range of the L78L33ABZ-AP?
The operating temperature range is from -40°C to 125°C.
- Does the L78L33ABZ-AP require external components?
No, the L78L33ABZ-AP does not require external components.
- What is the tolerance of the output voltage for the L78L33ABZ-AP?
The tolerance is ±4%.
- What is the package type of the L78L33ABZ-AP?
The package type is TO92.
- What are some common applications of the L78L33ABZ-AP?
Common applications include local or on-card regulation, replacement for Zener diode/resistor combinations, and use in high-current voltage regulators.
- How does the L78L33ABZ-AP improve over traditional Zener diode/resistor combinations?
The L78L33ABZ-AP offers lower quiescent current and lower noise compared to traditional Zener diode/resistor combinations.
