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DC/DC 轉換器

LM3677

現行

適用於超低電壓電路的 3 MHz、600mA 微型降壓 DC-DC 轉換器

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
TPS62860 現行 具有 I2C/VSEL 介面的 1.75 V 至 5.5 V 輸入、0.6 A 超低 IQ 降壓轉換器 Smaller solution size and low quiescent current with I2C/VSEL interface

LM3677

現行
產品規格表 立即訂購

產品詳細資料

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 Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000016 Duty cycle (max) (%) 100
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 Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000016 Duty cycle (max) (%) 100
DSBGA (YZR) 5 2.02 mm² (— mm × — mm) USON (NGE) 6 3 mm² (2 mm × 1.5 mm)
  • 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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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits datasheet (Rev. F) 2013/5/2

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YZR) 5 Ultra Librarian
USON (NGE) 6 Ultra Librarian
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