Overview
The MC7905BD2TR4 is a negative voltage regulator from ON Semiconductor, part of the MC7900 series. This regulator is designed to provide a fixed negative output voltage and is complementary to the popular MC7800 series of positive voltage regulators. It is capable of delivering up to 1.0 A of current, making it suitable for a variety of applications requiring stable negative voltage supplies.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = +25°C) | -4.9 | -5.0 | -5.1 | Vdc |
| Line Regulation (TJ = +25°C, IO = 1.0 A) | - | - | 0.5 | mV |
| Load Regulation (TJ = +25°C, 5.0 mA ≤ IO ≤ 1.5 A) | - | - | 12 | mV |
| Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) | - | - | 40 | μV |
| Ripple Rejection (IO = 20 mA, f = 120 Hz) | - | - | 70 | dB |
| Dropout Voltage (IO = 1.0 A, TJ = +25°C) | - | - | 1.3 | Vdc |
| Average Temperature Coefficient of Output Voltage | - | - | -1.0 | mV/°C |
| Input Bias Current (TJ = +25°C) | - | - | 8.0 | mA |
| Operating Junction Temperature | -40 | - | 125 | °C |
Key Features
- Fixed Negative Output Voltage: The MC7905BD2TR4 provides a stable negative output voltage of -5V.
- High Current Capability: It can deliver up to 1.0 A of current, making it suitable for various power requirements.
- Low Dropout Voltage: The regulator has a dropout voltage of 1.3 Vdc at 1.0 A output current.
- Good Line and Load Regulation: It offers good line and load regulation, ensuring stable output voltage across different input and load conditions.
- High Ripple Rejection: The regulator has a high ripple rejection ratio of 70 dB at 120 Hz.
- Wide Operating Temperature Range: It operates over a junction temperature range of -40°C to +125°C.
Applications
The MC7905BD2TR4 is suitable for a variety of applications that require a stable negative voltage supply. These include:
- Power Supplies: For providing negative voltage rails in power supply systems.
- Audio Equipment: In audio amplifiers and other audio equipment requiring negative voltage supplies.
- Industrial Control Systems: For powering components in industrial control systems that need negative voltages.
- Medical Devices: In medical equipment that requires stable negative voltage supplies.
- Automotive Systems: For use in automotive electronics that need reliable negative voltage regulation.
Q & A
- What is the output voltage of the MC7905BD2TR4?
The output voltage of the MC7905BD2TR4 is -5.0 Vdc. - What is the maximum current output of the MC7905BD2TR4?
The maximum current output is 1.0 A. - What is the dropout voltage of the MC7905BD2TR4?
The dropout voltage is 1.3 Vdc at 1.0 A output current. - What is the ripple rejection ratio of the MC7905BD2TR4?
The ripple rejection ratio is 70 dB at 120 Hz. - What is the operating junction temperature range of the MC7905BD2TR4?
The operating junction temperature range is -40°C to +125°C. - What are some common applications of the MC7905BD2TR4?
Common applications include power supplies, audio equipment, industrial control systems, medical devices, and automotive systems. - What is the input bias current of the MC7905BD2TR4?
The input bias current is up to 8.0 mA at TJ = +25°C. - How does the MC7905BD2TR4 ensure stability and transient response?
Stability and transient response are improved with the use of input and output capacitors (Cin and CO). - What is the average temperature coefficient of the output voltage?
The average temperature coefficient of the output voltage is -1.0 mV/°C. - What package types are available for the MC7905BD2TR4?
The MC7905BD2TR4 is available in D2PAK and other package types.
