LM3677ECE-1.82

• 16μA (typical) quiescent current
• Maximum load capacity of 600 mA
• 3 MHz的PWM固定开关频率（典型值）
• Automatic PFM/PWM mode switching
• 可在5焊球的micro SMD封装和6引脚LLP封装
• High efficiency internal synchronous rectification
• Internal soft start
• 0.01μA (typical) shutdown current
• Available from single-cell lithium-ion batteries
• 只有三个微小的表面贴装外部元件的需要（解决方案的尺寸小于20毫米 2 ）
• Current overload and thermal shutdown protection

illustrate

的LM3677降压DC - DC转换器进行了优化，从单节锂离子电池和输入电压轨供电2.7V至5.5V的超低电压电路。 It can deliver up to 600 mA of load current over the entire input voltage range. LM3677是配置不同的固定输出电压选项以及从1.2V到3.3V的可调输出电压版本范围。

The device provides superior functionality and sophisticated power management systems for mobile phones and similar portable applications. Intelligent automatic switching between PWM low noise and PFM low current modes provides improved system control. 在PWM模式中，器件工作在3兆赫（典型值）的固定频率。 PWM模式从〜80 mA的驱动器的负载600 mA最大。 Hysteretic PFM mode extends battery life and reduces quiescent current by 16μA (typical) at light load and standby. Internal synchronous rectification provides high efficiency. 在关断模式（使能引脚拉低），设备关闭，耗电量降低至0.01μA（典型值）。

LM3677是无铅（NOPB）5焊球的micro SMD封装和6引脚LLP封装。 一个3 MHz（典型值）的开关频率允许使用微小的表面贴装元件。 Only three external surface mount components, an inductor and two ceramic capacitors, are required.

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• mobile phone
• Pocket PC
• MP3 player
• W - LAN
• Portable instrument
• Digital cameras
• Portable hard drives