Overview
The L79L05ACZ-AP is a three-terminal negative voltage regulator produced by STMicroelectronics. This component is part of the L79L series, which is designed to provide stable negative output voltages with internal current limiting and thermal shutdown, making them highly reliable and essentially indestructible. The L79L05ACZ-AP specifically offers an output voltage of -5V and is suitable for a wide range of applications, including local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage (VO) | -4.8 | -5 | -5.2 | V |
| Output Current (IO) | 100 | mA | ||
| Input Voltage (VI) | -30 (for VO = -5 to -9V), -35 (for VO = -12 to -15V) | V | ||
| Line Regulation (ΔVO) | 150 | mV | ||
| Load Regulation (ΔVO) | 40 | 80 | mV | |
| Quiescent Current (Id) | 6 | 6.5 | mA | |
| Output Noise Voltage (eN) | 60 | µV | ||
| Supply Voltage Rejection (SVR) | 37 | 45 | dB | |
| Dropout Voltage (Vd) | 1.7 | V | ||
| Operating Junction Temperature (TJ) | -40 | 125 | °C | |
| Storage Temperature Range (TSTG) | -40 | 150 | °C |
Key Features
- Output current up to 100 mA
- Output voltage of -5V with ±5% tolerance (AC version)
- Internal current limiting and thermal shutdown for enhanced reliability
- No external components required
- Thermal overload protection and short-circuit protection
- Low quiescent current and low noise
- Available in various packages including TO-92, SO-8, and SOT-89
- ECOPACK® compliant for environmental sustainability
Applications
The L79L05ACZ-AP is versatile and can be used in a variety of applications, including:
- Local or on-card regulation to eliminate noise and distribution problems associated with single-point regulation.
- Replacement for Zener diode/resistor combinations, offering improved output impedance and lower quiescent current.
- High-current voltage regulators when used with power pass elements.
- General-purpose negative voltage regulation in electronic devices.
Q & A
- What is the output voltage of the L79L05ACZ-AP? The output voltage is -5V with a ±5% tolerance.
- What is the maximum output current of the L79L05ACZ-AP? The maximum output current is 100 mA.
- Does the L79L05ACZ-AP require external components? No, it does not require any external components.
- What are the key protection features of the L79L05ACZ-AP? It includes internal current limiting, thermal shutdown, thermal overload protection, and short-circuit protection.
- What are the typical applications of the L79L05ACZ-AP? It is used for local or on-card regulation, as a replacement for Zener diode/resistor combinations, and in high-current voltage regulators.
- What are the available packages for the L79L05ACZ-AP? It is available in TO-92, SO-8, and SOT-89 packages.
- What is the operating junction temperature range of the L79L05ACZ-AP? The operating junction temperature range is from -40°C to 125°C.
- Is the L79L05ACZ-AP environmentally compliant? Yes, it is ECOPACK® compliant.
- What is the quiescent current of the L79L05ACZ-AP? The quiescent current is typically 6 mA at 25°C.
- What is the dropout voltage of the L79L05ACZ-AP? The dropout voltage is 1.7 V.
