LM317LM

Hình ảnh chỉ để tham khảo

LM317LM

+BOM

IC REG LIN POS ADJ 100MA 8-SOIC

  • Nhà sản xuấtonsemi

  • Ông. Phần #LM317LM

  • Có sẵn7745

365 Đảm bảo chất lượng ngày

7*24 giờ dịch vụ quarantee

90-Bảo hành sau bán hàng ngày

Bảo hành sản phẩm chính xác

Thông số kỹ thuật

thuộc tính Giá trị
Part Status Obsolete
Base Product Number LM317
Output Configuration Positive
Output Type Adjustable
Number of Regulators 1
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 1.2V
Voltage - Output (Max) 37V
Current - Output 100mA
Current - Quiescent (Iq) 10 mA
PSRR 80dB (120Hz)
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature 0°C ~ 125°C
Mounting Type Surface Mount
Package 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Packaging Tube

Tổng quan

Description

The LM317LM is a versatile voltage regulator chip capable of supplying a stable output voltage, adjustable from 1.25V to 37V, with a current output of up to 100 mA. It is a linear regulator that requires only a few external components for operation, typically including two resistors to set the output voltage and a capacitor for improved stability and transient response.
Key features of the LM317LM include overload protection, internal current limiting, and thermal shutdown to prevent the device from overheating. Its flexibility makes it suitable for a variety of applications, such as power supplies, battery chargers, and other electronic circuits where a stable voltage is essential.
The LM317LM is known for its ease of use and ability to produce a precise output voltage, making it a popular choice among hobbyists and professionals alike. It is packaged in a TO-92 or similar form factor, which is compact and easy to integrate into various electronic projects.

Equivalent

The LM317LM is a variable voltage regulator. Equivalent products include the LM317L, LM317LZ, and other similar low-power adjustable voltage regulators like the NTE956 or LD1117 series. These alternatives offer similar functionality with adjustable output voltage and current capabilities. Always check the electrical specifications and pin configurations to ensure compatibility with your application.

Features

The LM317LM is a versatile voltage regulator with the following features:
1. Adjustable Output Voltage: The output voltage can be set between 1.25V to 37V using external resistors.
2. Output Current: It provides up to 100 mA of output current.
3. Line Regulation: It offers excellent line regulation, typically 0.01%/V.
4. Load Regulation: Good load regulation of 0.1% is typically achieved.
5. Thermal Overload Protection: The LM317LM includes a built-in protection feature to prevent overheating.
6. Short-Circuit Protection: It prevents damage from short circuits by limiting the output current.
7. Safe Area Protection: Ensures the device operates within safe limits.
8. Low Quiescent Current: This helps in improving efficiency, especially important in battery-powered applications.
9. Wide Input Voltage Range: It can accept input voltages up to 40V.
10. Temperature Range: The device operates efficiently within a range of 0°C to 125°C.
These features make it suitable for a variety of applications in power supply design, including battery chargers and constant-current regulators.

Pinout

The LM317LM is a three-terminal adjustable voltage regulator. It is designed to provide a stable output voltage that can be adjusted from 1.25V to 37V with an output current capability of up to 100 mA. The three pins of the LM317LM are:
1. Input (Vin): This pin receives the unregulated input voltage that you wish to regulate.

2. Output (Vout): This pin delivers the regulated output voltage. The output voltage can be adjusted by connecting a resistor divider between the output and adjustment pins.
3. Adjustment (Adj): This pin allows you to set the output voltage by connecting it to a resistor divider network. The voltage across this pin and the output pin is typically 1.25V.
The LM317LM is commonly used in applications requiring adjustable power supplies, battery chargers, and other circuits needing a stable voltage. It provides features like current limiting, thermal overload protection, and safe area protection.

Manufacturer

The LM317LM is manufactured by several companies, including Texas Instruments and ON Semiconductor. These companies are prominent players in the semiconductor industry.
1. Texas Instruments (TI):
- Type: Multinational Corporation
- Headquarters: Dallas, Texas, USA
- Specialization: TI specializes in the design and manufacturing of semiconductors and various integrated circuits, including analog and embedded processing products. It serves diverse sectors such as automotive, industrial, personal electronics, and communications equipment.
2. ON Semiconductor (now onsemi):
- Type: Public Company
- Headquarters: Phoenix, Arizona, USA
- Specialization: Onsemi focuses on energy-efficient innovations, offering a broad portfolio of products, including power and signal management, logic, discrete, and custom devices. They cater to automotive, industrial, cloud, medical, and IoT sectors.
Both companies are integral to the electronics industry, providing essential components for a wide array of electronic devices and systems. The LM317LM is a voltage regulator, a critical component used to maintain steady voltage levels in electronic circuits.

Application

The LM317LM is a versatile adjustable voltage regulator used in various applications. It is commonly employed for power supply regulation, where it provides a stable output voltage adjustable from 1.25V to 37V, making it ideal for custom power supply units. It's used in battery chargers to ensure proper voltage levels during charging. In embedded systems and DIY electronics projects, the LM317LM helps in regulating voltage for microcontrollers and sensors. Additionally, it can be used in current regulation circuits, LED drivers, and as a part of voltage reference systems. Its simplicity and reliability make it a popular choice in both commercial and hobbyist electronics applications.

Package

The LM317LM is typically available in a TO-92 package, which is a small, three-lead transistor outline package. It is designed for low-power applications and offers an adjustable output voltage with a range of 1.25V to 37V, making it suitable for various electronic projects requiring voltage regulation.

Frequently Asked Questions


Q: What is the maximum input voltage supported by the LM317LM?
A: The LM317LM supports a maximum input voltage of 40V, as per the specification.


Q: What output voltage range can the LM317LM provide?
A: It provides an adjustable output voltage range from 1.2V to 37V.


Q: What is the maximum output current of the LM317LM?
A: The maximum output current is 100mA, suitable for low-power applications.


Q: Does the LM317LM include built-in protection features?
A: Yes, it includes over current, over temperature, and short circuit protection.


Q: What is the typical quiescent current for this regulator?
A: The typical quiescent current (Iq) is 10 mA.


Q: What is the operating temperature range for the LM317LM?
A: It operates from 0°C to 125°C, suitable for commercial applications.


Q: In which package is the LM317LM available?
A: It is offered in an 8-SOIC surface-mount package with a tube packaging option.


Sản phẩm liên quan đến LM317LM