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LM317BT
IC REG LINEAR POS ADJ 1.5A TO220
- Manufacturer
- Mfr. Part #LM317BT
- Package TO-220-3
- Datasheet
- In Stock5252
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Specifications
| Package | Tube |
| ProductStatus | Obsolete |
| OutputConfiguration | Positive |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 1.2V |
| Voltage-Output(Max) | 37V |
| Current-Output | 1.5A |
| Current-Quiescent(Iq) | 10 mA |
| PSRR | 80dB ~ 65dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | TO-220-3 |
Overview
Description
This voltage regulator requires only two external resistors to set the output voltage, making it straightforward to implement. The device is housed in a TO-220 package, facilitating easy mounting and heat dissipation. The LM317BT is favored in applications where precise voltage regulation is necessary, such as in power supplies, battery chargers, and embedded systems. Additionally, its ability to regulate a wide range of voltages makes it suitable for both fixed and adjustable power supplies.
Overall, the LM317BT is valued for its robustness, flexibility, and reliable performance in various electronic applications.
Features
1. Adjustable Output Voltage: It provides an output voltage range from 1.25V to 37V, making it suitable for a wide range of applications.
2. Output Current: It can supply more than 1.5A of load current, providing robust performance for demanding applications.
3. Line Regulation: It offers excellent line regulation, typically 0.01%/V, ensuring stable output despite input voltage changes.
4. Load Regulation: It features good load regulation with a typical value of 0.1%, maintaining steady output even with varying load conditions.
5. Thermal Protection: The LM317BT includes built-in thermal overload protection to prevent overheating.
6. Current Limiting: It has internal current limiting, offering protection against overcurrent conditions.
7. Safe Operating Area Protection: Ensures reliable operation by maintaining the device within its safe operating limits.
8. Package: Typically available in a TO-220 package, which is easy to mount and provides efficient heat dissipation.
These features make the LM317BT a popular choice for various applications including power supplies, battery chargers, and adjustable voltage regulators.
Package
Pinout
Pin Count and Functions:
1. Input (Pin 1): This is where the unregulated input voltage is applied. The input voltage must be higher than the desired output voltage by at least 3V for proper regulation.
2. Output (Pin 2): This pin provides the regulated output voltage. It is connected to the load and is where the regulated voltage is available.
3. Adjust (Pin 3): This pin is used to adjust the output voltage. By connecting a resistor divider between the output and adjust pins, the output voltage can be set to the desired level.
The LM317BT is well-suited for applications requiring adjustable voltage regulation and provides features like thermal overload protection and current limiting for safe operation.
Manufacturer
1. Texas Instruments (TI): An American technology company, TI is one of the largest manufacturers of semiconductors globally, providing products for various industries, including automotive, industrial, and consumer electronics.
2. onsemi (formerly ON Semiconductor): A leading supplier of high-performance silicon solutions for energy-efficient electronics, onsemi focuses on automotive, industrial, and communication markets.
3. STMicroelectronics: A Franco-Italian multinational that develops and manufactures a broad portfolio of semiconductor products, serving applications in power management, automotive, and IoT.
All these companies specialize in the design and production of semiconductor devices and play significant roles in the global electronics supply chain.
Application
Equivalent
1. LM317T - General equivalent with similar specifications.
2. L78S12CV - Offers a fixed output with similar characteristics.
3. NTE956 - A generic alternative with comparable performance.
4. L78MXX series - Offers fixed output with close functionality.
5. ON Semiconductor MC7800 Series - Provides fixed voltage options with similar applications.
These equivalents provide similar voltage regulation capabilities, ensuring compatibility in most circuits where the LM317BT is used.
Shipping
Shipping MethodsWe
offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.
Shipping Fee Reference (DHL/FedEx):
DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.
FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.
UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.
TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.
EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.
Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.
Payments
Payment Methods
The Payment term is 100% Prepaid.
Currently, we only accept the below payment methods:
1. PayPal
2. Credit/ Debit Card
3. Wire Transfer
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