Overview
The MC79L05ACDR is a fixed negative-voltage integrated-circuit voltage regulator produced by Texas Instruments. This component is part of the MC79L00 series and is designed for a wide range of applications, including on-card regulation to eliminate noise and distribution problems associated with single-point regulation. It can also be used to control series pass elements in high-current voltage-regulator circuits.
The MC79L05ACDR is known for its reliability and robust features, such as internal thermal-overload protection and internal short-circuit current limiting, making it immune to overload conditions. It is a direct replacement for industry-standard MC79L00 series regulators and is available in 5% or 10% voltage tolerance selections.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Output Voltage | -5 | V |
| Output Current | Up to 100 mA | mA |
| Input Voltage Range | -7 to -20 V | V |
| Operating Junction Temperature | 0 to 125 °C | °C |
| Dropout Voltage | 1.7 V at IO = 40 mA | V |
| Bias Current | 6 mA at 25 °C, 5.5 mA at 125 °C | mA |
| Input Regulation | 200 mV (VI = -7 V to -20 V) | mV |
| Ripple Rejection | 40 dB at f = 120 Hz | dB |
| Output Noise Voltage | 40 µV (f = 10 Hz to 100 kHz) | µV |
| Package Type | SOIC (D), TO-92 (LP) |
Key Features
- Internal thermal-overload protection and internal short-circuit current limiting.
- No external components required for operation.
- High ripple rejection (up to 40 dB at 120 Hz).
- Low output noise voltage (40 µV from 10 Hz to 100 kHz).
- Direct replacement for industry-standard MC79L00 series regulators.
- Available in 5% or 10% voltage tolerance selections.
- Immune to overload conditions due to internal protection features.
Applications
- On-card regulation for noise elimination and distribution problem mitigation in single-point regulation systems.
- Control of series pass elements in high-current voltage-regulator circuits.
- Replacement for Zener-diode and resistor combinations to improve output impedance and reduce bias current.
- Use in various electronic devices requiring stable negative voltage regulation.
Q & A
- What is the nominal output voltage of the MC79L05ACDR?
The nominal output voltage is -5 V.
- What is the maximum output current of the MC79L05ACDR?
The maximum output current is up to 100 mA.
- What is the input voltage range for the MC79L05ACDR?
The input voltage range is from -7 V to -20 V.
- What are the operating junction temperature limits for the MC79L05ACDR?
The operating junction temperature range is from 0 °C to 125 °C.
- Does the MC79L05ACDR require external components for operation?
No, the MC79L05ACDR does not require external components for operation.
- What is the dropout voltage of the MC79L05ACDR at an output current of 40 mA?
The dropout voltage is 1.7 V at an output current of 40 mA.
- What is the ripple rejection of the MC79L05ACDR?
The ripple rejection is up to 40 dB at a frequency of 120 Hz.
- What is the output noise voltage of the MC79L05ACDR?
The output noise voltage is 40 µV from 10 Hz to 100 kHz.
- In what packages is the MC79L05ACDR available?
The MC79L05ACDR is available in SOIC (D) and TO-92 (LP) packages.
- Can the MC79L05ACDR be used as a replacement for Zener-diode and resistor combinations?
Yes, the MC79L05ACDR can be used as a replacement for Zener-diode and resistor combinations to improve output impedance and reduce bias current.
