MC7805BTG
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | Not Applicable |
| RoHS Status | ROHS3 Compliant |
| Package / Case | TO-220-3 |
| Mfr | onsemi |
| Mounting Type | Through Hole |
| Operating Temperature | -40°C ~ 125°C |
| Voltage - Input (Max) | 35V |
| Output Type | Fixed |
| Current - Output | 1A |
| Supplier Device Package | TO-220 |
| Output Configuration | Positive |
| Current - Quiescent (Iq) | 8 mA |
| Control Features | - |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Number of Regulators | 1 |
| Protection Features | Over Temperature, Short Circuit |
| PSRR | 68dB (120Hz) |
| Voltage Dropout (Max) | 2V @ 1A (Typ) |
| Package | Tube |
| Product Status | Active |
| Base Product Number | MC7805 |
| REACH Status | REACH Unaffected |
| Standard Package | 50 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
MC7805BTG Linear Voltage Regulator IC Positive Fixed 1 Output 1A TO-220
The MC7805BTG is an ON Semiconductor fixed 5V linear voltage regulator belonging to the classic 78xx series, packaged in TO-220 through-hole form factor. It accepts an input voltage from 7V to 25V and delivers a stable 5V output with up to 1A continuous load current. This three-terminal regulator requires minimal external components and integrates multiple protection functions, operating over a wide temperature range, and remains a popular cost-effective solution for basic low-noise power supply circuits in general electronic hardware.
Key Features & Applications
● Fixed +5V regulated output with tight output voltage tolerance and simple three-terminal design.
● Capable of supplying up to 1A continuous output current under proper heat dissipation.
● Built-in thermal shutdown, short-circuit current limiting and safe area protection to prevent device damage.
● Wide operating junction temperature range from 0°C to 125°C for general industrial and consumer applications.
● Low quiescent current, simple circuit design with only input and output capacitors needed.
● TO-220 through-hole package for easy mounting on heat sinks to handle higher power dissipation.
This linear regulator is widely used to create stable 5V power rails for general consumer electronics, hobbyist circuits, laboratory test equipment, small industrial control boards, sensor modules, audio circuits and low-current embedded systems. It provides clean DC power for microcontrollers, logic ICs and analog sensors where low noise and simple power architecture are preferred over high conversion efficiency.
FAQ: What is the main limitation of MC7805BTG? It is a linear regulator, so excess power converts into heat; sufficient heat sink must be installed under heavy load. The input voltage should maintain at least a 2V dropout above 5V, otherwise the output cannot keep regulation.
Alternative linear regulator models
1. L7805CV: STMicroelectronics fixed 5V 1A linear regulator in TO-220 package with equivalent electrical characteristics as a direct pin-to-pin replacement.
2. KA7805: Fairchild 7805 series 1A 5V linear regulator with identical pinout, suitable for general-purpose low-cost power supply designs.
3. AMS1117-5.0: Low dropout 5V linear regulator with smaller dropout voltage, ideal for applications with limited input voltage headroom.
