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ST LM317T-DG Adjustable Voltage Regulator LM317T
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ST(STMicroelectronics) LM317T-DG
- Type
- ST
- Unit
- Electronic Component
- Minimum package
- 1000 管
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- ST(STMicroelectronics)
- Electronic Component
- LM317T-DG
- Electronic Component
- 1
- Package
- TO-220
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 3.086g
- Electronic Component
- 1
- Electronic Component
- BM0000281444
- Operating Temperature
- 0℃~+125℃@(Tj)
- Operating Voltage
- 40V
- Output
- Electronic Component
- Output Voltage
- 1.2V~37V
- Output Current
- 1.5A
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM317T-DG 产品概述
1. 概述
LM317T-DG 是由意法半导体（STMicroelectronics）生产的一款高性能可调线性稳压器（LDO），它广泛应用于各种电子设备中，为用户提供稳定的输出电压。该器件特别适合需要精确电压调节的应用场景，具有多种特点和优势。
2. 主要参数
- 输出电压范围：1.2V 至 37V 可调
- 最大输入电压：40V
- 输出电流能力：1.5A
- PSRR（电源纹波抑制比）：80dB 至 65dB（120Hz）
- 工作温度范围：0°C 至 125°C
- 封装类型：TO-220-3
- 保护功能：过流和过温保护
3. 工作原理
LM317T-DG 使用反馈控制原理来调节输出电压，用户只需通过外部电阻设置所需的输出电压。这种灵活性使得 LM317 比固定电压的稳压器更加适用。在正常工作条件下，LM317T 能够提供一个稳定的输出电压，并可根据外部电路的需求调节。
4. 应用场景
LM317T-DG 适用于多种场合，凭借其宽广的输入电压范围和可调输出特性，常用于：
- 线性电源供给
- 器件降压
- 仪器仪表中的电源管理
- 电池充电电路
- 工业和消费类电子设备
5. 特性分析
5.1 低纹波和高稳定性
LM317T 的 PSRR 为 80dB 至 65dB（在 120Hz 频率下），这意味着它对输入电压的纹波变化具有极好的抑制能力。这对于要求电源稳定性的应用尤为重要，比如音频放大器和高精度传感器等。
5.2 热管理与保护特性
LM317T 内置过流和过温保护，能够在超出额定工作条件时自动限制电流和温度。这大大增强了设备的可靠性，尤其是在温度变化或者负载骤变的环境下。
5.3 易于设计和集成
由于 LM317 是标准化的线性稳压器，设计师可以轻松将其集成到现有电路中。使用者只需根据要求选择适当的电阻以设定输出电压，故在开发过程中的复杂性大大降低。
6. 封装与安装
LM317T-DG 使用 TO-220 封装，适合通孔安装，使其在热量散发和电气连接方面表现优良。TO-220 封装的设计有助于改善散热性能，适合高功率应用中的使用。
7. 结论
LM317T-DG 线性稳压器因其优异的性能表现和广泛的应用可调电压范围而受到电子爱好者和工程师们的广泛青睐。凭借着出色的电源纹波抑制能力、保护特性以及易于设计和集成的优势，LM317T-DG 是众多电源设计中的首选器件。
无论是在工业设备、消费类电子产品，还是通信设备中，LM317T-DG 均展现出了非凡的稳定性和可靠性，成为电子设计领域的重要组成部分。通过正确的元器件选择与设计，LM317T-DG 可以为每一种应用需求提供稳定的电源支撑，助力电子产品实现高效的能量转换和使用。
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