Overview
The MC79L05ACHX is a fixed negative-voltage integrated-circuit voltage regulator produced by Fairchild Semiconductor. This component is part of the MC79L00 series, designed to provide stable negative voltage regulation for a wide range of applications. It is particularly useful for on-card regulation, eliminating noise and distribution problems associated with single-point regulation. The regulator can deliver up to 100 mA of output current and features internal thermal-overload protection and short-circuit current limiting, making it robust and reliable in various operating conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Output Voltage | -5 | V |
| Output Current | Up to 100 | mA |
| Input Voltage Range | -7 to -20 | V |
| Operating Junction Temperature | 0 to 125 | °C |
| Quiescent Current | 5.5 | mA |
| Dropout Voltage | 1.7 | V |
| Ripple Rejection | 40 to 49 | dB |
| Output Noise Voltage | 40 | µV |
| Package Types | SOIC (D), TO-226 / TO-92 (LP) |
Key Features
- No external components required for operation.
- Internal thermal-overload protection and short-circuit current limiting.
- High ripple rejection (40 to 49 dB).
- Low output noise voltage (40 µV).
- Direct replacement for industry-standard MC79L00 series.
- Available in 5% or 10% voltage tolerance selections.
- Improves output impedance significantly compared to Zener-diode and resistor combinations.
Applications
The MC79L05ACHX is suitable for a variety of applications, including:
- On-card voltage regulation to eliminate noise and distribution problems.
- Control of series pass elements in high-current voltage-regulator circuits.
- Replacement for Zener-diode and resistor combinations to improve output impedance.
- General-purpose negative voltage regulation in electronic devices.
Q & A
- What is the nominal output voltage of the MC79L05ACHX?
The nominal output voltage is -5 V.
- What is the maximum output current of the MC79L05ACHX?
The maximum output current is up to 100 mA.
- What is the input voltage range for the MC79L05ACHX?
The input voltage range is from -7 V to -20 V.
- What is the operating junction temperature range for the MC79L05ACHX?
The operating junction temperature range is from 0°C to 125°C.
- Does the MC79L05ACHX require external components for operation?
No, it does not require external components for operation.
- What kind of protection does the MC79L05ACHX have?
The MC79L05ACHX has internal thermal-overload protection and short-circuit current limiting.
- What is the ripple rejection of the MC79L05ACHX?
The ripple rejection is between 40 to 49 dB.
- What is the output noise voltage of the MC79L05ACHX?
The output noise voltage is 40 µV.
- What are the available package types for the MC79L05ACHX?
The available package types are SOIC (D) and TO-226 / TO-92 (LP).
- Can the MC79L05ACHX replace Zener-diode and resistor combinations?
