SY87092SUD数据手册Silergy中文资料规格书

描述 Description

The SY20419is a high efficient, synchronous, step-up Boost converter designed for one-cellLi-Ion or Li-polymer, or a two to three-cell alkaline Ni-Cd or Ni-MH batterypowered applications. It can convert down to 1.8V input voltage. It adopts NMOSfor the main switch and PMOS for the synchronous switch.
The SY20419 can disconnect the output from input during theshutdown mode. When input voltage exceeds the regulated output voltage, the SY20419enters bypass mode automatically.

特性 Features

• 1.8V最小输入电压
• 1.8V~5.5V的可调输出电压
• 最低1A谷值限流
• 仅CCM操作
• 关机期间断开负载
• 3.3V输出时低导通电阻(主开关/同步开关):70/125mΩ
• 输出过压保护
• 当VIN≥VOUT时自动旁路模式
• 符合RoHS标准且无卤素
• 紧凑型封装DFN2x1.5-6

应用 Application

·AllSingle Cell Li or Dual Cell Battery Operated Products as MP-3 Player, PDAs, andOther Portable Equipment