STMicroelectronics LM317LZ-TR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.63 | $0.63 |
| 15+ | $0.41 | $6.15 |
| 25+ | $0.41 | $10.25 |
| 50+ | $0.38 | $19.00 |
| 100+ | $0.34 | $34.00 |
| N+ | $0.07 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 37V |
| Voltage Dropout (Max) | - |
| Current - Output | 100mA |
| Current - Quiescent (Iq) | 5 mA |
| Current - Supply (Max) | - |
| PSRR | 80dB ~ 65dB (120Hz) |
| Control Features | - |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) |
| Supplier Device Package | TO-92-3 |
| ROHS |  |
The STMicroelectronics LM317LZ-TR is a versatile adjustable linear regulator capable of delivering 100mA with an output voltage range from 1.2V to 37V. This TO-92 packaged device is a classic choice for designers needing a flexible, reliable voltage regulation solution. With a high power supply rejection ratio of up to 80dB, it effectively filters ripple, making it suitable for audio and precision analog applications. Its adjustable nature allows for use in a wide variety of circuits, from simple power supplies to battery chargers.
- Design Flexibility: Adjustable output from 1.2V to 37V allows use in a wide range of applications with just two external resistors.
- Excellent Noise Rejection: High PSRR (80dB at 120Hz) ensures clean, stable output for sensitive analog circuits.
- Robust and Proven: A classic, industry-standard design known for reliability and ease of use.
- Versatile Packaging: The TO-92-3 package is easy to handle and suitable for through-hole PCB designs.
Adjustable Power Supply for Prototyping
With an adjustable output from 1.2V to 37V, the LM317LZ-TR is perfect for benchtop power supplies, allowing engineers to dial in exact voltages for circuit development and testing.
Battery Charger Circuits
The adjustable output can be set to the required float voltage for various battery chemistries (e.g., 4.2V for Li-ion, 13.8V for lead-acid), making it a versatile component for simple charger designs.
Local On-Board Regulation
In systems with multiple supply rails, the LM317LZ can be used to create a local, clean, adjustable rail from a higher voltage bus, reducing noise and improving isolation between sections.
Constant Current LED Driver
By configuring the LM317LZ as a constant current source with a single external resistor, it can drive LEDs or laser diodes with a stable, adjustable current up to 100mA.
Audio Preamplifier Supply
The high PSRR (80dB at 120Hz) makes it suitable for powering audio preamplifiers and other analog circuits where ripple rejection is critical for low noise performance.
HV DC-DC Post-Regulator
After a switching regulator, the LM317LZ can act as a low-noise post-regulator to reduce ripple and switching noise, providing a cleaner supply for sensitive loads.
- Q: What is the output voltage range of the LM317LZ-TR?
- A: The LM317LZ-TR is an adjustable regulator with an output voltage range from 1.2V to 37V.
- Q: What is the maximum output current?
- A: It can provide up to 100mA of output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.2V up to 37V (based on output voltage spec).
- Q: What is the dropout voltage?
- A: Dropout voltage is not explicitly specified in the provided data; typically it is around 2V for this family.
- Q: What is the quiescent current?
- A: The quiescent current is 5 mA.
- Q: What package is available?
- A: The LM317LZ-TR is available in a TO-92-3 package.
LM317LZ-TR.pdf
- Q: What is the output voltage range of the LM317LZ-TR?
- A: The LM317LZ-TR is an adjustable regulator with an output voltage range from 1.2V to 37V.
- Q: What is the maximum output current?
- A: It can provide up to 100mA of output current.
- Q: What is the input voltage range?
- A: The input voltage can range from 1.2V up to 37V (based on output voltage spec).
- Q: What is the dropout voltage?
- A: Dropout voltage is not explicitly specified in the provided data; typically it is around 2V for this family.
- Q: What is the quiescent current?
- A: The quiescent current is 5 mA.
- Q: What package is available?
- A: The LM317LZ-TR is available in a TO-92-3 package.
