主页 电源管理 AC/DC 和 DC/DC 转换器（集成 FET）
主页
电源管理
AC/DC 和 DC/DC 转换器（集成 FET）

LM3674

正在供货

采用 SOT 23-5 封装的 2MHz、600mA 降压直流/直流转换器

立即订购
数据表

LM3674

正在供货
数据表 立即订购

产品详情

Rating Catalog Operating temperature range (°C) -30 to 85 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Iq (typ) (µA) 300 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -30 to 85 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Iq (typ) (µA) 300 Duty cycle (max) (%) 100
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Input Voltage Range From 2.7 V to 5.5 V
  • 600-mA Maximum Load Current
  • Available in Fixed and Adjustable Output Voltages
    Ranging From 1 V to 3.3 V
  • Operates From a Single Li-Ion Cell Battery
  • Internal Synchronous Rectification for High
    Efficiency
  • Internal Soft-Start
  • 0.01-µA Typical Shutdown Current
  • 2-MHz PWM Fixed Switching Frequency (typical)
  • Current Overload Protection and Thermal
    Shutdown Protection
  • Input Voltage Range From 2.7 V to 5.5 V
  • 600-mA Maximum Load Current
  • Available in Fixed and Adjustable Output Voltages
    Ranging From 1 V to 3.3 V
  • Operates From a Single Li-Ion Cell Battery
  • Internal Synchronous Rectification for High
    Efficiency
  • Internal Soft-Start
  • 0.01-µA Typical Shutdown Current
  • 2-MHz PWM Fixed Switching Frequency (typical)
  • Current Overload Protection and Thermal
    Shutdown Protection

The LM3674 step-down DC-DC converter is optimized for powering low-voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current over the entire input voltage range. There are several fixed output voltages and adjustable output voltage versions.

The device offers superior features and performance for mobile phones and similar portable systems. During the Pulse Width Modulation (PWM) mode, the device operates at a fixed-frequency of 2 MHz (typical). Internal synchronous rectification provides high efficiency during the PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).

The LM3674 is available in a 5-pin SOT-23 package. A high switching frequency of 2 MHz (typical) allows use of only three tiny external surface-mount components, an inductor and two ceramic capacitors.

The LM3674 step-down DC-DC converter is optimized for powering low-voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current over the entire input voltage range. There are several fixed output voltages and adjustable output voltage versions.

The device offers superior features and performance for mobile phones and similar portable systems. During the Pulse Width Modulation (PWM) mode, the device operates at a fixed-frequency of 2 MHz (typical). Internal synchronous rectification provides high efficiency during the PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).

The LM3674 is available in a 5-pin SOT-23 package. A high switching frequency of 2 MHz (typical) allows use of only three tiny external surface-mount components, an inductor and two ceramic capacitors.

filter 查找其他 AC/DC 和 DC/DC 转换器（集成 FET）
下载 观看带字幕的视频 视频

您可能感兴趣的相似产品

open-in-new 比较替代产品
功能与比较器件相似
TPS62230 正在供货 采用 1x1.5 SON 封装、具有 DCS-Control 的 2MHz 超小型降压转换器 Simple DC/DC converter with fast transient response at <12-mm² total BOM size.
TPS62671 正在供货 500mA、6MHz 高效降压转换器，Vout=1.8V Simple low-noise DC/DC converter in CSP at <12-mm² total BOM size.
TPS82671 正在供货 采用 MicroSiP™ 封装的 600mA 完全集成式低噪声降压转换器模块 Module with smaller BOM size and integrated inductor, input and output capacitors.

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 5
类型 标题 下载最新的英语版本 日期
* 数据表 LM3674 2-MHz, 600-mA Step-Down DC-DC Converter in SOT-23 数据表 (Rev. G) PDF | HTML 2015年 4月 24日
应用手册 TI 降压开关直流/直流转换器应用手册的快速参考指南 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2022年 7月 8日
设计指南 2-Port USB 3.0 Hub (TIDA-00287) 2014年 8月 1日
EVM 用户指南 AN-1427 LM3674 Evaluation Board (Rev. K) 2013年 4月 30日
应用手册 Application Note 1427 LM3674 Evaluation Board (cn) 2008年 10月 14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

LM3674MF-1.8EV — 采用 SOT 23-5 封装的 2MHz、600mA 降压 DC-DC 转换器

The LM3674 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board. The LM3674 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails (...)

用户指南: PDF
TI.com 上无现货
参考设计

TIDA-00287 — 2 端口 USB 3.0 集线器

这项经过验证的参考设计是一款符合 USB 3.0 标准的双端口集线器。该设计可在上游端口上提供同步 SuperSpeed 和高速/全速连接，并且能在下游端口上提供 SuperSpeed、高速、全速或低速连接。

该集线器设计可为每个下游端口提供电源控制，还可以提供过流保护和 ESD 保护。

设计指南: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
SOT-23 (DBV) 5 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

支持和培训

视频