Overview
The MC7809CD2TR4G is a member of the MC7800 series of positive linear voltage regulators produced by onsemi. These regulators are monolithic integrated circuits designed to provide fixed-voltage regulation for a wide variety of applications, including local, on-card regulation. The MC7809CD2TR4G specifically offers a regulated output voltage of 9 volts.
These devices are known for their robust features, including internal current limiting, thermal shutdown, and safe-area compensation, which ensure reliable operation under various conditions. With adequate heatsinking, they can deliver output currents in excess of 1.0 A, making them suitable for high-current applications.
Key Specifications
| Characteristic | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 8.65 | 9.0 | 9.35 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | 8.65 | 9.0 | 9.35 | Vdc |
| Line Regulation (TJ = 25°C) | - | - | 10 | mV |
| Load Regulation | - | - | 12 | mV |
| Dropout Voltage (IO = 1.0 A, TJ = 25°C) | - | - | 2.0 | Vdc |
| Output Noise Voltage (TA = 25°C) | - | - | 10 | µV/VO |
| Output Resistance (f = 1.0 kHz) | - | - | 1.0 | mΩ |
| Short Circuit Current Limit (TA = 25°C) | - | - | 0.2 | A |
| Peak Output Current (TJ = 25°C) | - | - | 2.2 | A |
| Average Temperature Coefficient of Output Voltage | - | - | -0.5 | mV/°C |
| Temperature Range | -40 | - | 125 | °C |
| Package | - | - | D2PAK, TO-220 | - |
Key Features
- Internal Current Limiting and Thermal Shutdown: Protects the device from overcurrent and overheating conditions.
- Safe-Area Compensation: Ensures the output transistor operates within a safe area to prevent damage.
- No External Components Required: Can be used as a standalone regulator without additional components.
- High Output Current: Capable of delivering output currents in excess of 1.0 A with adequate heatsinking.
- Output Voltage Tolerance: Available in 2% and 4% tolerance options.
- Pb-Free Packages: Available in lead-free packages to meet environmental regulations.
- Automotive Version: The NCV7800 series is available for automotive applications.
Applications
- Local, On-Card Regulation: Suitable for regulating voltage on PCBs and in compact electronic devices.
- Industrial Control Systems: Used in various industrial control systems requiring stable voltage supply.
- Automotive Systems: The NCV7800 version is used in automotive applications where reliability and robustness are critical.
- Consumer Electronics: Found in consumer electronics such as audio equipment, medical devices, and other applications requiring stable DC voltage.
Q & A
- What is the output voltage of the MC7809CD2TR4G?
The output voltage of the MC7809CD2TR4G is 9.0 V, with a tolerance range of 8.65 V to 9.35 V.
- What is the maximum output current of the MC7809CD2TR4G?
The MC7809CD2TR4G can deliver output currents in excess of 1.0 A with adequate heatsinking.
- Does the MC7809CD2TR4G require external components for operation?
No, the MC7809CD2TR4G can be used as a standalone regulator without additional components.
- What are the key protection features of the MC7809CD2TR4G?
The device includes internal current limiting, thermal shutdown, and safe-area compensation.
- What are the available package types for the MC7809CD2TR4G?
The MC7809CD2TR4G is available in D2PAK and TO-220 packages.
- Is the MC7809CD2TR4G suitable for automotive applications?
Yes, the NCV7800 version of this regulator is designed for automotive applications.
- What is the temperature range for the MC7809CD2TR4G?
The operating temperature range is from -40°C to +125°C.
- What is the dropout voltage of the MC7809CD2TR4G?
The dropout voltage is typically 2.0 V.
- How does the MC7809CD2TR4G handle short circuit conditions?
The device has an internal short circuit current limit to protect against short circuit conditions.
- What is the output noise voltage of the MC7809CD2TR4G?
The output noise voltage is typically 10 µV/VO.
