Overview
The L78L08ABD13TR is a three-terminal positive voltage regulator from STMicroelectronics. It belongs to the L78L series, which is known for its robust design, featuring internal current limiting and thermal shutdown, making these regulators essentially indestructible. With adequate heat-sinking, the L78L08ABD13TR can deliver up to 100 mA of output current. This regulator is designed for fixed voltage applications, including local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation. It can also be used as a replacement for Zener diode/resistor combinations, offering improvements in quiescent current and noise reduction.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 7.68 - 8.32 | V |
| Output Current | Up to 100 | mA |
| Input Voltage Range | 10.5 to 23 | V |
| Line Regulation | 125 - 175 mV | mV |
| Load Regulation | 40 - 80 mV | mV |
| Quiescent Current | 6 mA (TJ = 25°C), 5.5 mA (TJ = 125°C) | mA |
| Dropout Voltage | 1.7 | V |
| Operating Junction Temperature Range | -40 to 125 | °C |
| Package | SO-8 |
Key Features
- Output current up to 100 mA
- Output voltage of 8 V with ± 4% (A) or ± 8% (C) selection
- Internal current limiting and thermal shutdown for robust operation
- Short-circuit protection and thermal overload protection
- No external components required
- Low quiescent current and low noise
- Available in SO-8, SOT-89, and TO-92 packages
Applications
The L78L08ABD13TR is suitable for a wide range of applications, including:
- Local or on-card voltage regulation to eliminate noise and distribution problems
- Replacement for Zener diode/resistor combinations with improved performance
- Use with power pass elements to create high-current voltage regulators
- Industrial and commercial power supply systems
- Embedded systems requiring stable and reliable voltage regulation
Q & A
- What is the output voltage of the L78L08ABD13TR?
The output voltage of the L78L08ABD13TR is 8 V with a tolerance of ± 4% (A) or ± 8% (C).
- What is the maximum output current of the L78L08ABD13TR?
The maximum output current is up to 100 mA.
- What are the key protection features of the L78L08ABD13TR?
The regulator features internal current limiting, thermal shutdown, and short-circuit protection.
- What are the typical applications of the L78L08ABD13TR?
It is used for local or on-card voltage regulation, as a replacement for Zener diode/resistor combinations, and in high-current voltage regulator configurations.
- What is the operating junction temperature range of the L78L08ABD13TR?
The operating junction temperature range is -40 to 125°C.
- What package types are available for the L78L08ABD13TR?
The regulator is available in SO-8, SOT-89, and TO-92 packages.
- Does the L78L08ABD13TR require any external components?
No, the L78L08ABD13TR does not require any external components for operation.
- What is the quiescent current of the L78L08ABD13TR?
The quiescent current is 6 mA at 25°C and 5.5 mA at 125°C.
- What is the dropout voltage of the L78L08ABD13TR?
The dropout voltage is 1.7 V.
- Is the L78L08ABD13TR RoHS compliant?
