LM317T Adjustable Voltage Regulator (TO-220) – 5 Pack
R60.00
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R95.65 if bought individually
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LM317T Adjustable Voltage Regulator (TO-220) – 5 Pack
Product Details
LM317T Adjustable Voltage Regulator (TO-220) – 5 Pack – Technical Specifications:
| Module Type | – Adjustable Linear Voltage Regulator |
| Quantity | – 5 Units per Pack |
| Output Voltage | – 1.25V to 37V DC (Adjustable) |
| Input Voltage | – Up to 40V DC (Maximum) |
| Output Current | – Up to 1.5A per regulator (with proper heatsinking) |
| Voltage Dropout | – ~2V to 3V (typical) |
| Reference Voltage | – 1.25V |
| Regulation Type | – Positive Adjustable Regulator |
| Package Type | – TO-220 |
| Load Regulation | – ~0.1% (typical) |
| Line Regulation | – ~0.01% (typical) |
| Protection Features | – Thermal Shutdown, Current Limiting, Safe Area Protection |
| Operating Temperature | – 0°C to +125°C (junction) |
| Mounting Type | – Through-Hole |
| Pin Configuration | – ADJ (Adjust), OUT (Output), IN (Input) |
| Adjustment Method | – External Resistors (Voltage Set via Divider) |
| Series | – LM317 Adjustable Regulator Family |
| Compatible Applications | – Variable power supplies, battery chargers, LED drivers, prototyping, DIY electronics |
Handy Tips for Using the LM317T Adjustable Regulator (5 Pack):
1: The LM317T allows you to set any output voltage between 1.25V and 37V using just two external resistors. A common configuration uses:
- R1 = 240Ω
- R2 = variable resistor (potentiometer) to adjust output voltage
2: The regulator requires the input voltage to be at least ~2–3V higher than the desired output voltage. For example, to get 12V output, supply at least 14–15V input.
3: As a linear regulator, the LM317 dissipates excess voltage as heat. At higher currents or large voltage drops, it will generate significant heat — always use a heatsink when needed.
4: Each regulator in this 5-pack can be used independently across multiple projects, making it ideal for prototyping, repairs, or bulk builds.
5: For stable performance, always include capacitors:
- Input: ~0.1µF
- Output: ~1µF
- Optional: Add a capacitor on the ADJ pin (~10µF) for improved ripple rejection
6: Built-in thermal shutdown and current limiting protect the device, but proper thermal design is still essential for long-term reliability.
7: The LM317 can also be used as a current regulator (constant current source), making it useful for LED driving or battery charging applications with a simple resistor configuration.
8: If efficiency is important (e.g., solar or battery systems), consider using a switch-mode (buck) converter, as linear regulators waste power as heat when stepping down voltage.
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