LM317L Adjustable Voltage Regulator SOP-8

LM317L Adjustable Voltage Regulator SOP-8 is a compact, surface-mount version of the classic LM317 linear regulator. It offers a reliable and easy-to-use solution for adjustable output voltage in a variety of electronic circuits. This IC provides stable regulation with thermal shutdown, short-circuit protection, and internal current limiting features, making it suitable for small form-factor or space-constrained power supply applications.

Key Features of LM317L Adjustable Voltage Regulator SOP-8:

• Adjustable Output Voltage: 1.25V to 37V with external resistor network.
• Output Current: Up to 100mA for LM317L version.
• Thermal Overload Protection: Integrated shutdown prevents damage from overheating.
• Short-Circuit Protection: Automatically limits output current under fault conditions.
• Internal Current Limiting: Enhances device reliability and safety.

Technical Specifications of LM317L Adjustable Voltage Regulator SOP-8:

• Input Voltage Range: 3V to 40V
• Output Voltage Range: 1.25V to 37V (adjustable)
• Output Current: 100mA (typical)
• Line Regulation: 0.01%/V (typical)
• Load Regulation: 0.1% (typical)
• Reference Voltage: 1.25V ±1%
• Operating Temperature Range: 0°C to +125°C

Mechanical Specifications of LM317L Adjustable Voltage Regulator SOP-8:

• Package Type: SOP-8 (Small Outline Package)
• Pin Pitch: 1.27mm
• Mounting Type: Surface Mount
• RoHS Compliant: Yes

Dimensions:

• Body Width: 4.90mm
• Body Length: 6.00mm
• Body Height: 1.50mm
• Lead Pitch: 1.27mm

Mounting Options:

• SMD Mount: Solder directly onto PCB pads for compact power designs.
• Adapter Boards: Can be used with SOP to DIP adapters for prototyping on breadboards.

Schematic Diagram, Connection, Wiring and Pinout of LM317L:

• Pinout (SOP-8): V_in, V_out, Adj, and other standard layout per datasheet.
• Connection: Input voltage is supplied to V_in, output is taken from V_out, and adjustment resistor network is connected between Adj and V_out.
• Wiring: Requires two external resistors for setting output voltage; optional capacitor for stability.

Datasheet of LM317L Adjustable Voltage Regulator SOP-8:

• Download LM317L Datasheet (PDF)

Applications of LM317L Adjustable Voltage Regulator SOP-8:

• Battery Chargers: Adjustable output suits charging circuits for various cell types.
• Bench Power Supplies: Fine-tuned voltage output for test equipment.
• Low Current Regulators: Used in sensor circuits and signal conditioning modules.
• LED Drivers: Current-limited adjustable output for LED strings.
• Embedded Systems: On-board regulated power for MCU and logic circuits.

Equivalent of LM317L Adjustable Voltage Regulator SOP-8:

• AMS1117 Adjustable: Similar SOT-223 fixed/adjustable regulator
• TL431: Adjustable precision shunt regulator alternative
• LT3080: Low dropout adjustable regulator with better precision
• LM1117 Adjustable: Pin-compatible SMD adjustable regulator

Package Includes:

• 1 x LM317L Adjustable Voltage Regulator SOP-8