Overview
The MC7808BT is a 1.0 A positive voltage regulator produced by ON Semiconductor. It is part of the MC78XX series, which are monolithic integrated circuits designed as fixed-voltage regulators for a wide variety of applications, including local, on-card regulation. These regulators are known for their reliability and versatility in providing stable output voltages.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 7.7 | 8.0 | 8.3 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | VO | 7.6 | 8.0 | 8.4 | Vdc |
| Line Regulation (TJ = 25°C) | Regline | - | 0.5 | 1.3 | mV |
| Load Regulation (TJ = 25°C) | Regload | - | 5.0 | 12 | mV |
| Output Noise Voltage (TA = 25°C) | Vn | - | 10 | - | μV/VO |
| Output Resistance (f = 1.0 kHz) | rO | - | 0.9 | - | mΩ |
| Short Circuit Current Limit (TA = 25°C) | ISC | - | 0.2 | - | A |
| Peak Output Current (TJ = 25°C) | Imax | - | 2.2 | - | A |
| Average Temperature Coefficient of Output Voltage | TCVO | - | -0.3 | - | 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, DPAK-3, and standard 3-lead transistor packages.
- NCV prefix for automotive and other applications requiring unique site and control change requirements; AEC-Q100 qualified.
Applications
The MC7808BT is suitable for a wide range of applications, including:
- Local, on-card voltage regulation.
- Power supplies for electronic equipment.
- Automotive systems (NCV prefix models).
- Industrial control systems.
- Consumer electronics requiring stable voltage regulation.
Q & A
- What is the typical output voltage of the MC7808BT?
The typical output voltage of the MC7808BT is 8.0 Vdc.
- What is the maximum output current of the MC7808BT?
The maximum output current of the MC7808BT is 1.0 A.
- Does the MC7808BT require external components for operation?
No, the MC7808BT does not require external components for operation.
- What are the key protection features of the MC7808BT?
The MC7808BT features internal thermal overload protection and short circuit current limiting.
- In what packages is the MC7808BT available?
The MC7808BT is available in surface mount D2PAK-3, DPAK-3, and standard 3-lead transistor packages.
- Is the MC7808BT suitable for automotive applications?
Yes, the NCV prefix models of the MC7808BT are AEC-Q100 qualified and suitable for automotive applications.
- What is the average temperature coefficient of output voltage for the MC7808BT?
The average temperature coefficient of output voltage for the MC7808BT is -0.3 mV/°C.
- How does the MC7808BT handle line and load regulation?
The MC7808BT has specified line and load regulation characteristics to ensure stable output voltage across various input and load conditions.
- What is the output noise voltage of the MC7808BT?
The output noise voltage of the MC7808BT is typically 10 μV/VO at 25°C.
- What is the output resistance of the MC7808BT at 1 kHz?
The output resistance of the MC7808BT at 1 kHz is typically 0.9 mΩ.
