Overview
The STMicroelectronics L78L08ABZ is a three-terminal positive linear voltage regulator from the L78L series. This regulator is designed to provide a fixed output voltage of 8V and can deliver up to 100mA of output current, making it suitable for a wide range of applications. The L78L series regulators are known for their internal current limiting and thermal shutdown features, which make them essentially indestructible. These features ensure reliable operation and protect the device from overcurrent and overheating conditions.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Regulator Type | Linear Voltage | - |
| Output Voltage | Fixed 8V | 7.68 - 8.32 V (typical range) |
| Maximum Output Current | 100mA | - |
| Line Regulation | - | 175 mV (VI = 10.5 to 23 V, TJ = 25 °C) |
| Load Regulation | - | 80 mV (IO = 1 to 100 mA, TJ = 25 °C) |
| Quiescent Current | - | 6 mA (TJ = 25 °C) |
| Dropout Voltage | - | 1.7 V |
| Package Type | TO-92 | - |
| Pin Count | 3 | - |
| Operating Temperature Range | -40 to +125 °C | - |
| Maximum Input Voltage | 30 V | - |
Key Features
- Internal current limiting and thermal shutdown for enhanced reliability and protection against overcurrent and overheating.
- Low quiescent current and low noise, making them suitable for applications requiring minimal power consumption and high stability.
- Fixed output voltage of 8V with good line and load regulation.
- Compact TO-92 package with 3 pins, suitable for through-hole mounting.
- Wide operating temperature range from -40 to +125 °C, ensuring performance in various environmental conditions.
Applications
- General-purpose voltage regulation in electronic devices.
- Replacement for Zener diode/resistor combinations, offering improved performance and lower quiescent current.
- Power supply systems requiring stable and regulated output voltage.
- Industrial and consumer electronics where reliability and thermal protection are critical.
- Automotive and aerospace applications due to their robust operating temperature range and protection features.
Q & A
- What is the output voltage of the L78L08ABZ regulator?
The output voltage of the L78L08ABZ regulator is fixed at 8V.
- What is the maximum output current of the L78L08ABZ?
The maximum output current of the L78L08ABZ is 100mA.
- What are the key protection features of the L78L08ABZ regulator?
The L78L08ABZ regulator features internal current limiting and thermal shutdown, making it essentially indestructible.
- What is the operating temperature range of the L78L08ABZ?
The operating temperature range of the L78L08ABZ is from -40 to +125 °C.
- What is the package type and pin count of the L78L08ABZ?
The L78L08ABZ comes in a TO-92 package with 3 pins.
- What is the maximum input voltage for the L78L08ABZ regulator?
The maximum input voltage for the L78L08ABZ regulator is 30V.
- Is the L78L08ABZ RoHS compliant?
Yes, the L78L08ABZ is RoHS compliant.
- What are some common applications for the L78L08ABZ regulator?
The L78L08ABZ is commonly used in general-purpose voltage regulation, as a replacement for Zener diode/resistor combinations, and in power supply systems requiring stable output voltage.
- How does the L78L08ABZ regulator handle line and load regulation?
The L78L08ABZ regulator has good line and load regulation, with line regulation of 175 mV and load regulation of 80 mV under specified conditions.
- What is the quiescent current of the L78L08ABZ regulator?
The quiescent current of the L78L08ABZ regulator is 6 mA at 25 °C.
