Overview
The L78L08ACZ 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 8 volts and is known for its robustness and ease of use. It features internal current limiting and thermal shutdown, making it essentially indestructible when adequate heat-sinking is provided. The L78L08ACZ is suitable for a wide range of applications, including local or on-card regulation, and can be used to eliminate noise and distribution problems associated with single-point regulation.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage (VO) | 7.68 | 8 | 8.32 | V |
| Output Current (IO) | 100 | mA | ||
| Input Voltage (VI) | 35 | V | ||
| Line Regulation (∆VO) | 175 mV | |||
| Load Regulation (∆VO) | 80 mV | |||
| Quiescent Current (Id) | 6 | 5.5 | mA | |
| Output Noise Voltage (eN) | 70 µV | |||
| Supply Voltage Rejection (SVR) | 37 dB | |||
| Dropout Voltage (Vd) | 1.7 V | |||
| Operating Junction Temperature (TJ) | 0 | 125 | °C | |
| Storage Temperature Range (TSTG) | -65 | 150 | °C |
Key Features
- Internal Current Limiting and Thermal Shutdown: Ensures the regulator is essentially indestructible when proper heat-sinking is provided.
- Fixed Output Voltage: Available in various fixed output voltages, including 8 volts for the L78L08ACZ model.
- No External Components Required: Simplifies the design and reduces the number of external components needed.
- Low Quiescent Current: Minimizes power consumption in standby or low-load conditions.
- Low Noise and High Supply Voltage Rejection: Enhances the regulator's performance in noisy environments.
- Compact Packages: Available in TO-92, SO-8, and SOT-89 packages, making it suitable for various design requirements.
Applications
- Local or On-Card Regulation: Ideal for eliminating noise and distribution problems associated with single-point regulation.
- Power Supply Systems: Can be used in power supply systems requiring fixed voltage regulation.
- Consumer Electronics: Suitable for use in a variety of consumer electronic devices where stable voltage regulation is necessary.
- Industrial Control Systems: Used in industrial control systems to provide reliable voltage regulation.
- Automotive Electronics: Can be used in automotive applications where robust and reliable voltage regulation is required.
Q & A
- What is the output voltage of the L78L08ACZ regulator?
The output voltage of the L78L08ACZ regulator is 8 volts.
- What is the maximum output current of the L78L08ACZ?
The maximum output current of the L78L08ACZ is 100 mA.
- What are the key protection features of the L78L08ACZ?
The L78L08ACZ features internal current limiting and thermal shutdown.
- Do I need external components to use the L78L08ACZ?
No, the L78L08ACZ does not require external components to function.
- What are the available packages for the L78L08ACZ?
The L78L08ACZ is available in TO-92, SO-8, and SOT-89 packages.
- What is the operating junction temperature range for the L78L08ACZ?
The operating junction temperature range for the L78L08ACZ is 0 to 125 °C.
- What is the quiescent current of the L78L08ACZ?
The quiescent current of the L78L08ACZ is typically 6 mA at 25 °C.
- How does the L78L08ACZ perform in terms of noise and supply voltage rejection?
The L78L08ACZ has low output noise voltage and high supply voltage rejection, making it suitable for noisy environments.
- Can the L78L08ACZ be used in automotive applications?
Yes, the L78L08ACZ can be used in automotive applications due to its robust and reliable performance.
- What is the dropout voltage of the L78L08ACZ?
The dropout voltage of the L78L08ACZ is 1.7 volts.
