Overview
The MC79L05ACDR2 is a part of the MC79L00A Series of negative voltage regulators produced by onsemi. These regulators are designed to be inexpensive and easy to use, making them suitable for a wide range of applications that require up to 100 mA of current. The MC79L05ACDR2 specifically provides a fixed output voltage of -5 V, making it ideal for systems that need a stable negative voltage supply.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage | VI | -30 | - | -40 | Vdc |
| Output Voltage (TJ = +25°C) | VO | -4.5 | -5.0 | -5.5 | Vdc |
| Input Regulation (TJ = +25°C) | - | -14.5 Vdc ≥ VI ≥ -27 Vdc | - | - | mV |
| Load Regulation (TJ = +25°C, 1.0 mA ≤ IO ≤ 40 mA) | Regload | - | 50 | - | mV |
| Dropout Voltage (IO = 40 mA, TJ = +25°C) | |VI-VO| | - | 1.7 | - | Vdc |
| Input Bias Current (TJ = +25°C) | IIB | - | 6.5 | - | mA |
| Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) | Vn | - | 200 | - | μV |
| Ripple Rejection (−15 ≤ VI ≤ −25 Vdc, f = 120 Hz, TJ = +25°C) | RR | 37 | 42 | - | dB |
| Thermal Resistance, Junction-to-Ambient (TO-92 Type) | RJA | - | 160 | - | °C/W |
| Thermal Resistance, Junction-to-Case (TO-92 Type) | RJC | - | 83 | - | °C/W |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
| Junction Temperature | TJ | - | - | 150 | °C |
Key Features
- Fixed Output Voltage: The MC79L05ACDR2 provides a stable output voltage of -5 V.
- High Current Capability: Capable of delivering up to 100 mA of current.
- Thermal Overload Protection: The device includes thermal overload protection to prevent damage from excessive power overload conditions.
- Internal Short Circuit Protection: Built-in protection against internal short circuits.
- Low Dropout Voltage: Dropout voltage of 1.7 V at 40 mA output current.
- Good Ripple Rejection: High ripple rejection ratio, ensuring a stable output voltage despite input voltage fluctuations.
- Compact Packages: Available in SOIC-8 and TO-92 packages, making it suitable for various design requirements.
Applications
The MC79L05ACDR2 is suitable for a variety of applications that require a stable negative voltage supply. These include:
- Power Supplies: Used in power supply circuits to provide a negative voltage rail.
- Audio Equipment: Often used in audio circuits to provide the necessary negative voltage for operational amplifiers and other components.
- Industrial Control Systems: Used in industrial control systems where a stable negative voltage is required.
- Medical Devices: Can be used in medical devices that require a reliable negative voltage supply.
- Automotive Systems: Suitable for automotive systems that need a stable negative voltage.
Q & A
- What is the output voltage of the MC79L05ACDR2?
The output voltage of the MC79L05ACDR2 is -5 V. - What is the maximum current that the MC79L05ACDR2 can deliver?
The MC79L05ACDR2 can deliver up to 100 mA of current. - What are the thermal protection features of the MC79L05ACDR2?
The device includes thermal overload protection and internal short circuit protection. - What is the dropout voltage of the MC79L05ACDR2 at 40 mA output current?
The dropout voltage is 1.7 V at 40 mA output current. - What are the available packages for the MC79L05ACDR2?
The MC79L05ACDR2 is available in SOIC-8 and TO-92 packages. - What is the ripple rejection ratio of the MC79L05ACDR2?
The ripple rejection ratio is typically 37 to 42 dB. - What is the storage temperature range for the MC79L05ACDR2?
The storage temperature range is -65°C to +150°C. - What is the junction temperature limit for the MC79L05ACDR2?
The junction temperature limit is +150°C. - What are some common applications of the MC79L05ACDR2?
Common applications include power supplies, audio equipment, industrial control systems, medical devices, and automotive systems. - How does the MC79L05ACDR2 ensure stability and transient response?
Stability and transient response are improved by using input and output capacitors (CI and CO).
