主页 电源管理 线性和低压降 (LDO) 稳压器
主页
电源管理
线性和低压降 (LDO) 稳压器

LM317MQ

正在供货

适用于汽车应用的 500mA、40V、可调节线性稳压器

立即订购
数据表

LM317MQ

正在供货
数据表 立即订购

产品详情

Rating Automotive Vin (max) (V) 37, 40 Vin (min) (V) 2.5, 3 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output Vout (max) (V) 37 Vout (min) (V) 1.25 Noise (µVrms) 38 PSRR at 100 KHz (dB) 22 Iq (typ) (mA) 3.5 Thermal resistance θJA (°C/W) 60 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) -40 to 125
Rating Automotive Vin (max) (V) 37, 40 Vin (min) (V) 2.5, 3 Iout (max) (A) 0.5 Output options Adjustable Output, Fixed Output Vout (max) (V) 37 Vout (min) (V) 1.25 Noise (µVrms) 38 PSRR at 100 KHz (dB) 22 Iq (typ) (mA) 3.5 Thermal resistance θJA (°C/W) 60 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 2000 Operating temperature range (°C) -40 to 125
SOT-223 (DCY) 4 45.5 mm² 6.5 x 7
  • Adjustable output voltage range (VOUT): 1.25V to 37V
  • Output current (IOUT): Up to 500mA
  • Built-in, short-circuit current limiting and thermal protection
  • Stable without any output capacitor
  • Operating temperature range: –40°C to +125°C
  • Packages:
    • 4-pin, 6.5mm × 7mm SOT-223 (RθJA : 77.7°C/W)
    • 3-pin, 6.6mm × 10.11mm TO-252 (RθJA : 31.7°C/W)
  • Adjustable output voltage range (VOUT): 1.25V to 37V
  • Output current (IOUT): Up to 500mA
  • Built-in, short-circuit current limiting and thermal protection
  • Stable without any output capacitor
  • Operating temperature range: –40°C to +125°C
  • Packages:
    • 4-pin, 6.5mm × 7mm SOT-223 (RθJA : 77.7°C/W)
    • 3-pin, 6.6mm × 10.11mm TO-252 (RθJA : 31.7°C/W)

The LM317M and LM317MQ are adjustable three-pin, positive-voltage regulators capable of supplying an output current of 0.5A over an output voltage range of 1.25V to 37V. The device requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%. The device includes current limiting, thermal overload protection, and safe operating area protection.

The device is a floating regulator meaning there is no device ground terminal. Quiescent current flows to the load instead of being wasted flowing to ground. Regulated output voltage of hundreds of volts is possible if the maximum input to output differential does not exceed 40V at any time. The device functions as a floating current source controlled by a single resistor.

Additionally, the device does not need an output capacitor for stable operation across the load current range. Optionally, add an electrolytic or tantalum output capacitor to improve transient response. Ceramic output capacitors are available, but output ringing is potentially present on transients. Bypass the ADJUST pin with any type of capacitor to achieve high ripple-rejection ratios.

The LM317M and LM317MQ are adjustable three-pin, positive-voltage regulators capable of supplying an output current of 0.5A over an output voltage range of 1.25V to 37V. The device requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%. The device includes current limiting, thermal overload protection, and safe operating area protection.

The device is a floating regulator meaning there is no device ground terminal. Quiescent current flows to the load instead of being wasted flowing to ground. Regulated output voltage of hundreds of volts is possible if the maximum input to output differential does not exceed 40V at any time. The device functions as a floating current source controlled by a single resistor.

Additionally, the device does not need an output capacitor for stable operation across the load current range. Optionally, add an electrolytic or tantalum output capacitor to improve transient response. Ceramic output capacitors are available, but output ringing is potentially present on transients. Bypass the ADJUST pin with any type of capacitor to achieve high ripple-rejection ratios.

filter 查找其他 线性和低压降 (LDO) 稳压器
下载 观看带字幕的视频 视频

查看 TI.com 库存以寻找类似产品

具有类似规格的产品，按可用的 TI.com 库存分类。

立即查看

您可能感兴趣的相似产品

open-in-new 比较替代产品
功能与比较器件相同，且具有相同引脚
LM317M 正在供货 500mA、40V 可调节线性稳压器 Pin-to-pin equivalent for industrial applications

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 4
类型 标题 下载最新的英语版本 日期
* 数据表 LM317M, LM317MQ 3-Pin Adjustable Regulators 数据表 (Rev. Q) PDF | HTML 2025年 7月 25日
应用手册 LDO 噪声揭秘 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2020年 9月 16日
应用手册 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
应用手册 简化的 LDO PSRR 测量 最新英语版本 (Rev.A) PDF | HTML 2010年 7月 28日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

LM317A-337N-EVM — 3 引脚可调节稳压器评估模块

LM317A-337N-EVM 展示了 LM317A 可调稳压器及其负电压互补器件 LM337-N 的标准应用。该评估模块 (EVM) 中两款器件均采用 SOT-223 封装，负载电流最高可达 1A。此 EVM 设计便于改造，可换装 TO-220 封装版本的器件，以实现 1.5A 工作电流。该 EVM 预留了足够的占位空间供用户自主选择电容，且采用 4 层铜 PCB 设计并预留散热片空间，确保优异的散热性能。

用户指南: PDF
TI.com 上无现货
封装 引脚 CAD 符号、封装和 3D 模型
SOT-223 (DCY) 4 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

视频