Overview
The L78L15ABZ-AP is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78L series. These regulators are designed to provide fixed voltage regulation and are known for their robustness, featuring internal current limiting and thermal shutdown, making them essentially indestructible. They are suitable for a wide range of applications, including local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation. The L78L15ABZ-AP can deliver up to 100 mA output current if an adequate heat sink is provided and operates within a temperature range of -40 °C to 125 °C.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Part Number | L78L15ABZ-AP |
| Package Style | TO-92 |
| Mounting Method | Through Hole |
| Output Voltage | 15 V |
| Output Current | Up to 100 mA |
| Quiescent Current | 6 mA (at TJ = 25 °C) |
| Operating Temperature Range | -40 °C to 125 °C |
| Dropout Voltage | 1.7 V |
| Line Regulation | 300 mV (VI = 17.5 to 30 V, TJ = 25 °C) |
| Load Regulation | 60 mV (IO = 1 to 100 mA, TJ = 25 °C) |
Key Features
- Output current up to 100 mA
- Output voltage of 15 V with options for other voltages in the series (3.3, 5, 6, 8, 9, 10, 12, 18, 24 V)
- Thermal overload protection and short-circuit protection
- No external components required
- Available in either ± 4% (A) or ± 8% (C) selection
- Improves output impedance by typically two orders of magnitude compared to Zener diode/resistor combinations
- Lower quiescent current and lower noise
Applications
The L78L15ABZ-AP is suitable for 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 improved output impedance and lower noise.
- Use with power pass elements to create high-current voltage regulators.
- Industrial applications where robust and reliable voltage regulation is necessary.
Q & A
- What is the output voltage of the L78L15ABZ-AP?
The output voltage of the L78L15ABZ-AP is 15 V.
- What is the maximum output current of the L78L15ABZ-AP?
The maximum output current is up to 100 mA if an adequate heat sink is provided.
- What are the key protection features of the L78L15ABZ-AP?
The key protection features include thermal overload protection and short-circuit protection.
- Does the L78L15ABZ-AP require any external components?
No, the L78L15ABZ-AP does not require any external components.
- What is the operating temperature range of the L78L15ABZ-AP?
The operating temperature range is -40 °C to 125 °C.
- What package style is the L78L15ABZ-AP available in?
The L78L15ABZ-AP is available in a TO-92 package.
- What are the benefits of using the L78L15ABZ-AP over a Zener diode/resistor combination?
The L78L15ABZ-AP offers improved output impedance, lower quiescent current, and lower noise compared to Zener diode/resistor combinations.
- Can the L78L15ABZ-AP be used in high-current applications?
Yes, it can be used with power pass elements to create high-current voltage regulators.
- What is the quiescent current of the L78L15ABZ-AP?
The quiescent current is 6 mA at TJ = 25 °C.
- Is the L78L15ABZ-AP suitable for industrial applications?
Yes, it is suitable for industrial applications due to its robustness and reliability.
