Overview
The L78L33ACZ-AP is a three-terminal positive voltage regulator produced by STMicroelectronics. This component is part of the L78L series, known for its reliability and robustness. It is designed to provide a fixed output voltage of 3.3V and can handle input voltages up to 20V. The regulator features internal current limiting and thermal shutdown, making it essentially indestructible when adequate heat-sinking is provided. This regulator is suitable for a wide range of applications requiring stable and low-noise power supply.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 3.168 | 3.3 | 3.432 | V |
| Output Current | - | - | 100 mA | - |
| Input Voltage Range | 5.3 | - | 20 | V |
| Line Regulation (VI = 5.3 to 20 V, TJ = 25°C) | 100 | - | 150 | mV |
| Load Regulation (IO = 1 to 100 mA, TJ = 25°C) | 40 | - | 60 | mV |
| Quiescent Current (TJ = 25°C) | 5.5 | 6 | 7 | mA |
| Dropout Voltage | - | - | 1.7 | V |
| Thermal Shutdown Temperature | - | - | 150°C | - |
| Package Type | - | - | TO-92 | - |
Key Features
- Fixed output voltage of 3.3V with ±4% or ±8% selection.
- Internal current limiting and thermal shutdown for enhanced reliability and protection.
- No external components required for operation.
- Low dropout voltage of 1.7V.
- Low quiescent current and low noise output.
- Available in TO-92, SO-8, and SOT-89 packages.
- Compliant with EU RoHS regulations.
Applications
The L78L33ACZ-AP is versatile and can be used in various applications, including:
- Local or on-card voltage 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.
- General-purpose power supply in electronic devices requiring stable and low-noise voltage regulation).
Q & A
- What is the output voltage of the L78L33ACZ-AP?
The output voltage of the L78L33ACZ-AP is 3.3V).
- What is the maximum output current of the L78L33ACZ-AP?
The maximum output current of the L78L33ACZ-AP is 100 mA).
- What are the key protection features of the L78L33ACZ-AP?
The key protection features include internal current limiting and thermal shutdown).
- Does the L78L33ACZ-AP require external components for operation?
No, the L78L33ACZ-AP does not require external components for operation).
- What is the dropout voltage of the L78L33ACZ-AP?
The dropout voltage of the L78L33ACZ-AP is 1.7V).
- What are the available package types for the L78L33ACZ-AP?
The L78L33ACZ-AP is available in TO-92, SO-8, and SOT-89 packages).
- Is the L78L33ACZ-AP compliant with EU RoHS regulations?
Yes, the L78L33ACZ-AP is compliant with EU RoHS regulations).
- What is the thermal shutdown temperature of the L78L33ACZ-AP?
The thermal shutdown temperature of the L78L33ACZ-AP is 150°C).
- Can the L78L33ACZ-AP be used as a replacement for Zener diode/resistor combinations?
Yes, the L78L33ACZ-AP can be used as a replacement for Zener diode/resistor combinations, offering improvements in quiescent current and noise reduction).
- What are some common applications of the L78L33ACZ-AP?
The L78L33ACZ-AP is commonly used in local or on-card voltage regulation, replacement for Zener diode/resistor combinations, and general-purpose power supply in electronic devices requiring stable and low-noise voltage regulation).
