Overview
The MC7809CD2TR4 is a three-terminal positive fixed voltage regulator produced by ON Semiconductor. This monolithic integrated circuit is designed to provide a stable output voltage of 9 volts, making it suitable for a wide variety of applications requiring local, on-card regulation. The device is part of the MC78XX series, known for its reliability and robust performance characteristics.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 8.65 | 9.0 | 9.35 | Vdc |
| Input Voltage | - | - | 35 | Vdc |
| Dropout Voltage (IO = 1.0 A, TJ = 25°C) | - | - | 2.0 | Vdc |
| Peak Output Current (TJ = 25°C) | - | - | 2.2 | A |
| Short Circuit Current Limit (TA = 25°C) | - | - | 0.2 | A |
| Output Noise Voltage (TA = 25°C, 10 Hz ≤ f ≤ 100 kHz) | - | - | 10 | μV/VO |
| Output Resistance (f = 1.0 kHz) | - | - | 1.0 | mΩ |
| Average Temperature Coefficient of Output Voltage | - | - | -0.5 | mV/°C |
Key Features
- Output current in excess of 1.0 A with adequate heatsinking.
- No external components required for operation.
- Internal thermal overload protection and short circuit current limiting.
- Output transistor safe-area compensation.
- Output voltage offered in 1.5%, 2%, and 4% tolerance.
- Available in surface mount D2PAK-3 and standard 3-lead transistor packages.
- Internal current limiting and safe-area compensation.
Applications
The MC7809CD2TR4 is versatile and can be used in various applications, including local on-card regulation, power supplies, and electronic devices that require a stable 9V output voltage. It is particularly useful in systems where space is limited and external components are not feasible. Common applications include industrial control systems, consumer electronics, and automotive systems.
Q & A
- What is the output voltage of the MC7809CD2TR4? The output voltage is 9.0 V with a tolerance range of 8.65 V to 9.35 V.
- What is the maximum input voltage for the MC7809CD2TR4? The maximum input voltage is 35 Vdc.
- What is the peak output current of the MC7809CD2TR4? The peak output current is 2.2 A.
- Does the MC7809CD2TR4 have internal protection features? Yes, it includes internal thermal overload protection and short circuit current limiting.
- What are the available packages for the MC7809CD2TR4? It is available in surface mount D2PAK-3 and standard 3-lead transistor packages.
- What is the dropout voltage for the MC7809CD2TR4? The dropout voltage is 2.0 Vdc at an output current of 1.0 A.
- How does the MC7809CD2TR4 handle noise? It has an output noise voltage of 10 μV/VO in the frequency range of 10 Hz to 100 kHz.
- What is the output resistance of the MC7809CD2TR4? The output resistance is 1.0 mΩ at a frequency of 1.0 kHz.
- Is the MC7809CD2TR4 suitable for high-temperature environments? Yes, it operates over a junction temperature range from 0°C to 125°C.
- What are some common applications of the MC7809CD2TR4? It is commonly used in industrial control systems, consumer electronics, and automotive systems.
