Overview
The MC79L05ACD is a fixed negative-voltage integrated-circuit voltage regulator produced by Texas Instruments. This component is part of the MC79L series, designed to provide stable negative voltage outputs 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 MC79L05ACD can also be used to control series pass elements in high-current voltage-regulator circuits.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage | -4.8 | -5 | -5.2 | V |
| Input Voltage | -7 | -10 | -20 | V |
| Output Current | 1 | 40 | 100 | mA |
| Operating Junction Temperature | 0 | - | 125 | °C |
| Input Regulation | 150 | 100 | 200 | mV |
| Ripple Rejection | 40 | 49 | 49 | dB |
| Output Regulation | 30 | 60 | 60 | mV |
| Dropout Voltage | 1.7 | 1.7 | 1.7 | V |
| Bias Current | 5.5 | 6 | 6 | mA |
Key Features
- No external components required for operation.
- Internal thermal-overload protection and short-circuit current limiting.
- High ripple rejection and low output noise voltage.
- Available in 5% or 10% voltage tolerance selections.
- Direct replacement for industry-standard MC79L00 series.
- Immune to overload due to internal current-limiting and thermal-shutdown features.
- Improves output impedance significantly when used as a replacement for Zener-diode and resistor combinations.
Applications
- On-card 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.
- Use in various electronic devices requiring stable negative voltage supplies.
Q & A
- What is the maximum output current of the MC79L05ACD?
The maximum output current is up to 100 mA.
- What are the typical operating junction temperatures for the MC79L05ACD?
The operating junction temperature range is from 0°C to 125°C.
- What is the input voltage range for the MC79L05ACD?
The input voltage range is from -7 V to -20 V.
- Does the MC79L05ACD require external components for operation?
No, the MC79L05ACD does not require external components for operation.
- What is the ripple rejection of the MC79L05ACD?
The ripple rejection is typically 49 dB.
- What is the dropout voltage of the MC79L05ACD?
The dropout voltage is 1.7 V.
- Is the MC79L05ACD protected against thermal overload and short circuits?
- What are the available voltage tolerance selections for the MC79L05ACD?
The MC79L05ACD is available in 5% or 10% voltage tolerance selections.
- Can the MC79L05ACD be used as a replacement for Zener-diode and resistor combinations?
- What are some common applications of the MC79L05ACD?
