STMicroelectronics LM317BS-TR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.52 | $1.52 |
| 15+ | $0.35 | $5.25 |
| 25+ | $0.34 | $8.50 |
| 50+ | $0.32 | $16.00 |
| 100+ | $0.29 | $29.00 |
| N+ | $0.06 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Active |
| Output Type | Positive |
| Number of Regulators | Adjustable |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 37V |
| Voltage Dropout (Max) | - |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | 5 mA |
| Current - Supply (Max) | - |
| PSRR | 65dB ~ 80dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223 |
| ROHS |  |
The LM317BS-TR from STMicroelectronics is a versatile adjustable linear regulator designed for applications requiring a stable and precise voltage supply. With an output range from 1.2V to 37V and a maximum current of 1.5A, it offers excellent flexibility for a wide variety of power management tasks. Its low quiescent current and high power supply rejection ratio make it suitable for noise-sensitive audio and instrumentation circuits. Housed in a compact SOT-223 package, this regulator is an ideal choice for space-constrained designs.
- Wide Adjustable Output Range: The 1.2V to 37V output range provides maximum design flexibility, allowing a single part to be used across multiple voltage requirements.
- High Output Current: Capable of delivering up to 1.5A, it can power a wide range of loads, from microcontrollers to small motors.
- Excellent Ripple Rejection: With a PSRR of 65dB to 80dB at 120Hz, it effectively filters out power supply noise, ensuring clean and stable output for sensitive analog circuits.
- Low Quiescent Current: The 5 mA quiescent current helps to improve overall system efficiency, especially in battery-powered applications.
Adjustable Power Supply for Lab Equipment
Use the LM317BS-TR to create a precise, adjustable bench power supply. Its 1.2V to 37V output range and 1.5A current capability make it ideal for powering prototypes and testing circuits.
Battery Charger Circuit
Implement a simple, adjustable constant-voltage charger for lead-acid or lithium batteries. The adjustable output allows you to set the exact charging voltage required by the battery chemistry.
Audio Amplifier Power Stage
Provide a clean, low-noise supply rail for audio preamplifiers and op-amps. The LM317BS-TR's high PSRR (65dB-80dB at 120Hz) helps reject mains hum and ripple, improving audio clarity.
Microcontroller and Digital Logic Supply
Generate a stable, adjustable voltage for microcontrollers, sensors, and digital ICs. The 1.5A output can power multiple components, while the adjustable output allows for logic-level shifting.
Industrial Sensor Interface
Power industrial sensors and transducers that require a precise, adjustable supply voltage. The wide input range accommodates varying bus voltages, and the SOT-223 package is suitable for compact PCB designs.
Post-Regulator for Switching Supplies
Use the LM317BS-TR as a low-noise post-regulator after a DC-DC converter. Its high PSRR effectively filters switching noise, providing a clean analog supply for sensitive circuits.
- Q: What is the output voltage range of the LM317BS-TR?
- A: The LM317BS-TR is an adjustable LDO regulator with an output voltage range from 1.2V up to 37V.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.2V up to 37V, allowing for flexible power supply configurations.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided technical data.
- Q: What is the quiescent current?
- A: The typical quiescent current is 5 mA.
- Q: What package is the LM317BS-TR available in?
- A: It is available in the SOT-223 surface-mount package.
LM317BS-TR.pdf
- Q: What is the output voltage range of the LM317BS-TR?
- A: The LM317BS-TR is an adjustable LDO regulator with an output voltage range from 1.2V up to 37V.
- Q: What is the maximum output current?
- A: This regulator can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.2V up to 37V, allowing for flexible power supply configurations.
- Q: What is the dropout voltage?
- A: The dropout voltage is not specified in the provided technical data.
- Q: What is the quiescent current?
- A: The typical quiescent current is 5 mA.
- Q: What package is the LM317BS-TR available in?
- A: It is available in the SOT-223 surface-mount package.
