Overview
The L79L05ABZ-AP is a three-terminal negative voltage regulator from STMicroelectronics. This component is part of the L79L series, which is designed to provide fixed negative voltage regulation with high reliability and robustness. The L79L05ABZ-AP is essentially indestructible due to its internal current limiting and thermal shutdown features. It can deliver up to 100 mA of output current when an adequate heat-sink is provided. This regulator is ideal for local or on-card regulation, helping to eliminate noise and distribution problems associated with single-point regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | -5 V | V |
| Output Current | Up to 100 mA | mA |
| Input Voltage Range | -7 to -20 V | V |
| Output Tolerance | +/- 4% | % |
| Quiescent Current | 6 mA (at 25°C), 5.5 mA (at 125°C) | mA |
| Thermal Resistance Junction-Case | 15 °C/W (TO-92 package) | °C/W |
| Thermal Resistance Junction-Ambient | 200 °C/W (TO-92 package) | °C/W |
| Storage Temperature Range | -40 to 150 °C | °C |
| Operating Junction Temperature Range | -40 to 125 °C | °C |
| Package Type | TO-92 | |
| RoHS Compliance Grade | Ecopack2 |
Key Features
- Output current up to 100 mA
- Output voltage of -5 V with +/- 4% tolerance
- Thermal overload protection and short-circuit protection
- No external components required
- Low quiescent current and low noise
- Internal current limiting and thermal shutdown
- Available in TO-92, SO-8, and SOT-89 packages
- Ecopack2 compliant for environmental sustainability
Applications
The L79L05ABZ-AP 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, offering improved output impedance and lower noise.
- Use with power pass elements to create high-current voltage regulators.
- General-purpose negative voltage regulation in various electronic systems.
Q & A
- What is the maximum output current of the L79L05ABZ-AP?
The maximum output current is up to 100 mA.
- What are the available output voltages for the L79L series?
The L79L series offers output voltages of -5 V, -8 V, -12 V, and -15 V.
- Does the L79L05ABZ-AP require external components?
No, the L79L05ABZ-AP does not require any external components.
- What is the thermal shutdown feature of the L79L05ABZ-AP?
The thermal shutdown feature protects the device from overheating by shutting it down when the junction temperature exceeds a certain limit.
- What is the quiescent current of the L79L05ABZ-AP?
The quiescent current is 6 mA at 25°C and 5.5 mA at 125°C.
- What are the package options for the L79L05ABZ-AP?
The L79L05ABZ-AP is available in TO-92, SO-8, and SOT-89 packages.
- Is the L79L05ABZ-AP RoHS compliant?
- What is the storage temperature range for the L79L05ABZ-AP?
The storage temperature range is -40 to 150 °C.
- What is the operating junction temperature range for the L79L05ABZ-AP?
The operating junction temperature range is -40 to 125 °C.
- Can the L79L05ABZ-AP be used as a replacement for Zener diode/resistor combinations?
