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LM3673

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2MHz、350mA 降压直流/直流转换器

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全新 TPS62843 正在供货 1.8V 至 5.5V 输入电压、600mA 超低 IQ 降压转换器 Smaller solution size with 275-nA IQ and 0.4-V to 3.6-V VOUT

LM3673

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产品详情

Iout (max) (A) 0.35 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Type Converter Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85
Iout (max) (A) 0.35 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Type Converter Switching frequency (min) (kHz) 1600 Switching frequency (max) (kHz) 2600 Features Enable, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.1 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -30 to 85
DSBGA (YZR) 5 2.02 mm² 1.616 x 1.25
  • 16-µA Typical Quiescent Current
  • 350-mA Maximum Load Capability
  • 2-MHz PWM Fixed Switching Frequency (Typical)
  • Automatic PFM/PWM Mode Switching
  • Available in Fixed and Adjustable Output Voltages
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • 0.01-µA Typical Shutdown Current
  • Operates From a Single Li-Ion Cell Battery
  • Current Overload and Thermal Shutdown Protection
  • Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)
  • 16-µA Typical Quiescent Current
  • 350-mA Maximum Load Capability
  • 2-MHz PWM Fixed Switching Frequency (Typical)
  • Automatic PFM/PWM Mode Switching
  • Available in Fixed and Adjustable Output Voltages
  • Internal Synchronous Rectification for High Efficiency
  • Internal Soft Start
  • 0.01-µA Typical Shutdown Current
  • Operates From a Single Li-Ion Cell Battery
  • Current Overload and Thermal Shutdown Protection
  • Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)

The LM3673 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 350-mA load current over the entire input voltage range. There are several different fixed voltage output options available, as well as an adjustable output voltage version ranging from 1.1 V to 3.3 V.

The device offers superior features and performance for mobile phones and similar portable systems. The LM3673 uses intelligent automatic switching between pulse width modulation (PWM) and pulse frequency modulation (PFM) for better efficiency. During PWM mode, the device operates at a fixed-frequency of
2 MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).

The LM3673 is available in a tiny 5-pin DSBGA package. A high switching frequency of 2 MHz (typical) allows the use of three tiny surface-mount components: an inductor and two ceramic capacitors.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM3673 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 350-mA load current over the entire input voltage range. There are several different fixed voltage output options available, as well as an adjustable output voltage version ranging from 1.1 V to 3.3 V.

The device offers superior features and performance for mobile phones and similar portable systems. The LM3673 uses intelligent automatic switching between pulse width modulation (PWM) and pulse frequency modulation (PFM) for better efficiency. During PWM mode, the device operates at a fixed-frequency of
2 MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).

The LM3673 is available in a tiny 5-pin DSBGA package. A high switching frequency of 2 MHz (typical) allows the use of three tiny surface-mount components: an inductor and two ceramic capacitors.

For all available packages, see the orderable addendum at the end of the data sheet.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM3673 2-MHz, 350-mA Step-Down DC-DC Converter 数据表 (Rev. M) PDF | HTML 2016年 11月 15日
用户指南 AN-1465 LM3673 Evaluation Board (Rev. D) 2013年 7月 5日
应用手册 Application Note 1465 LM3673 Evaluation Board (cn) 2008年 10月 10日

设计和开发

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评估板

LM3673TL-ADJEV — 2MHz、350mA 降压 DC-DC 转换器评估模块

The LM3673 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7V to 5.5V. It provides up to 350mA load current, over the entire input voltage range. There are several different fixed voltage output options (...)

用户指南: PDF
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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

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