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AC/DC 和 DC/DC 转换器（集成 FET）

LM3677

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用于超低电压电路的 3MHz、600mA 微型降压直流/直流转换器

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open-in-new 比较替代产品
功能与比较器件相同，但引脚排列有所不同
TPS62860 正在供货 具有 I2C/VSEL 接口的 1.75V 至 5.5V 输入、0.6A 超低 IQ 降压转换器 Smaller solution size and low quiescent current with I2C/VSEL interface

LM3677

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 3.3 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 3500 Operating temperature range (°C) -30 to 85 Iq (typ) (µA) 16 Duty cycle (max) (%) 100 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 0.6 Vin (max) (V) 5.5 Vin (min) (V) 2.7 Vout (max) (V) 3.3 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 3500 Operating temperature range (°C) -30 to 85 Iq (typ) (µA) 16 Duty cycle (max) (%) 100 Type Converter
DSBGA (YZR) 5 2.02 mm² 1.616 x 1.25 USON (NGE) 6 3 mm² 2 x 1.5
  • 16 µA typical quiescent current
  • 600 mA maximum load capability
  • 3 MHz PWM fixed switching frequency (typ.)
  • Automatic PFM/PWM mode switching
  • Available in 5-bump DSBGA package and 6-pin USON package
  • Internal synchronous rectification for high efficiency
  • Internal soft start
  • 0.01 µA typical shutdown current
  • Operates from a single Li-Ion cell battery
  • Only three tiny surface-mount external components required (solution size less than 20 mm2)
  • Current overload and thermal shutdown protection

All trademarks are the property of their respective owners.

  • 16 µA typical quiescent current
  • 600 mA maximum load capability
  • 3 MHz PWM fixed switching frequency (typ.)
  • Automatic PFM/PWM mode switching
  • Available in 5-bump DSBGA package and 6-pin USON package
  • Internal synchronous rectification for high efficiency
  • Internal soft start
  • 0.01 µA typical shutdown current
  • Operates from a single Li-Ion cell battery
  • Only three tiny surface-mount external components required (solution size less than 20 mm2)
  • Current overload and thermal shutdown protection

All trademarks are the property of their respective owners.

The LM3677 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7V to 5.5V. It provides up to 600 mA load current over the entire input voltage range. The LM3677 is configured to different fixed voltage output options as well as an adjustable output voltage version range from 1.2V to 3.3V.

The device offers superior features and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode operation, the device operates at a fixed frequency of 3 MHz (typ). PWM mode drives loads from ~ 80 mA to 600 mA max. Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typ.) during light load and standby operation. Internal synchronous rectification provides high efficiency. In shutdown mode (Enable pin pulled down), the device turns off and reduces battery consumption to 0.01 µA (typ.).

The LM3677 is available in a lead-free (NOPB) 5-bump DSBGA package and 6-pin USON package. A switching frequency of 3 MHz (typ.) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required.

The LM3677 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7V to 5.5V. It provides up to 600 mA load current over the entire input voltage range. The LM3677 is configured to different fixed voltage output options as well as an adjustable output voltage version range from 1.2V to 3.3V.

The device offers superior features and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode operation, the device operates at a fixed frequency of 3 MHz (typ). PWM mode drives loads from ~ 80 mA to 600 mA max. Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typ.) during light load and standby operation. Internal synchronous rectification provides high efficiency. In shutdown mode (Enable pin pulled down), the device turns off and reduces battery consumption to 0.01 µA (typ.).

The LM3677 is available in a lead-free (NOPB) 5-bump DSBGA package and 6-pin USON package. A switching frequency of 3 MHz (typ.) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required.
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类型 标题 下载最新的英语版本 日期
* 数据表 3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits 数据表 (Rev. F) 2013年 5月 2日
EVM 用户指南 AN-1595 LM3677 Evaluation Board (Rev. C) 2013年 4月 30日

设计和开发

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封装 引脚 CAD 符号、封装和 3D 模型
DSBGA (YZR) 5 Ultra Librarian
USON (NGE) 6 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

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