L7805CP

The L7805CP is a fixed 5V linear voltage regulator from the 78xx family. It converts a higher DC input into a stable 5V output, with typical output current up to ~1 A (requires proper heat sinking).
Key points:
- Package and pinout: three terminals – Input, Ground, Output. In common TO‑220 plastic packages, pin order is Input–Ground–Output; the tab is usually tied to Ground.
- Electricals: Max input around 25 V; dropout about 2 V (depends on load); protected by thermal shutdown and current limiting.
- Stability: Needs input and output capacitors for stability (typical: ~0.33 µF input, ~0.1 µF output; larger caps can help with transients).
- Use cases: Simple, inexpensive 5V regulator for microcontrollers, sensors, and small circuits.
- Heat: Being linear, power dissipated is (Vin − 5 V) × I; plan for proper heat sinking and layout.
Note: Verify exact pinout and datasheet specifications for your specific L7805CP variant.

Equivalent 5V regulators to L7805CP include:
- LM7805 (National/TI)
- MC7805 (Motorola)
- KA7805 (Fairchild/RENESAS)
- ST variants like L7805CV/L7805CP
These 3-pin regulators typically use the IN–GND–OUT pinout in TO-220 packaging; verify packaging/datasheet. For SMD alternatives, AMS1117-5.0 is common but pinouts differ.

L7805CP features (concise):
- Fixed +5 V output
- Output current up to 1 A (with adequate heatsinking)
- Input voltage range up to 35 V; dropout≈2 V at 1 A
- Internal current limiting and thermal/shutdown protection; short-circuit protection
- Output tolerance typically around ±4% (at 25°C)
- Requires input and output capacitors for stability: ≥0.33 μF on input and ≥0.1 μF on output
- Wide operating temperature: -40°C to +125°C
- Package: TO-220 plastic (CP) with tab connected to ground
- Simple, robust, no external resistors needed (easy to use)

Three pins. It is a fixed +5V linear regulator (L7805CP). Pinout (left to right, front face): Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output.

- Manufacturer: STMicroelectronics.
- Company type: A multinational semiconductor company that designs and manufactures a broad range of integrated circuits and electronic components (power management ICs, microcontrollers, sensors, analog/digital ICs, etc.).

L7805CP is a 5V fixed linear regulator. Common applications:
- Provide a stable 5V rail for microcontrollers (PIC/AVR/ARM), digital logic, and op-amps.
- Power embedded systems and development boards from higher DC supplies (7–15V).
- General-purpose, low-cost regulator in consumer electronics, instrumentation, and hobby/prototyping kits.
- Replacement regulator in legacy designs requiring a fixed 5V source.
- Any application needing a simple, low-noise 5V supply, with proper heat sinking and protection.

TO-220 plastic package (three leads, through-hole; with mounting hole).