Overview
The L79L05ACUTR is a three-terminal negative voltage regulator from STMicroelectronics. It belongs to the L79L series, which is designed to provide robust and reliable voltage regulation. These regulators are essentially indestructible due to their internal current limiting and thermal shutdown features. With adequate heat-sinking, they can deliver up to 100 mA of output current. The L79L series 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. They can also be used with power pass elements to create high-current voltage regulators and as a replacement for Zener diode/resistor combinations, offering improved output impedance, lower quiescent current, and reduced noise.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | Up to 100 | mA |
| Output Voltage | -5 | V |
| Output Tolerance | +/- 4% | % |
| Thermal Overload Protection | Yes | |
| Short-circuit Protection | Yes | |
| Operating Junction Temperature Range | -40 to 125 | °C |
| Storage Temperature Range | -40 to 150 | °C |
| Package Type | SOT-89 | |
| RoHS Compliance Grade | Ecopack2 |
Key Features
- Output current up to 100 mA
- Output voltage of -5 V
- Thermal overload protection
- Short-circuit protection
- No external components required
- Output tolerance of +/- 4%
- Improved output impedance compared to Zener diode/resistor combinations
- Lower quiescent current and noise
Applications
The L79L05ACUTR is suitable for various applications, including:
- Local or on-card voltage regulation to eliminate noise and distribution problems associated with single-point regulation.
- Use with power pass elements to create high-current voltage regulators.
- Replacement for Zener diode/resistor combinations, offering improved performance.
- General-purpose negative voltage regulation in electronic devices.
Q & A
- What is the maximum output current of the L79L05ACUTR?
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, -8, -12, and -15 V.
- Does the L79L05ACUTR require external components for operation?
No, the L79L05ACUTR does not require any external components for operation.
- What kind of protection features does the L79L05ACUTR have?
The L79L05ACUTR has thermal overload protection and short-circuit protection.
- What is the operating junction temperature range for the L79L05ACUTR?
The operating junction temperature range is -40 to 125 °C.
- What package type is the L79L05ACUTR available in?
The L79L05ACUTR is available in the SOT-89 package type.
- Is the L79L05ACUTR RoHS compliant?
Yes, the L79L05ACUTR is RoHS compliant with an Ecopack2 grade.
- What is the output tolerance of the L79L05ACUTR?
The output tolerance is +/- 4%.
- Can the L79L05ACUTR be used as a replacement for Zener diode/resistor combinations?
Yes, the L79L05ACUTR can be used as a replacement for Zener diode/resistor combinations, offering improved output impedance and lower quiescent current and noise.
- What are some common applications for the L79L05ACUTR?
Common applications include local or on-card regulation, use with power pass elements, and general-purpose negative voltage regulation.
