（DC-DC轉(zhuǎn)換IC）
1) EX3406 （替代TOREX XC9226/XC9225）
*High efficiency up to 96%
*600mA output current
*Input voltage of 2.5-5.5V
*1.5 fixed frequency
*Build-in LDO-mode,extending battery
*OTP
*interal synchrotrons switch,no Schotoky
*SOT-25/SOT-26 package
適用于手機，PDA，MP3，數(shù)碼相框等消費電子類產(chǎn)品。

2) EX34063
Featuer:
*Operating  From 3.0 to 40V
*Active Current Limiting
*Low     Quiescent Current:3mA
*Output Switch Current in Excess of 1.5A
*Adjustable Output Voltage
*Frequency Operation to 100KHz
*2% Reference Accuracy
*Package:DIP-8/SOP-8

3) EXD485 (替代MAXIM-MAX485)
*Low Quiescent Current:300uA
*-7V to +12V Common-Mode Input Voltage Range
*Three-State Outputs
*30ns Propagation Delays,5ns Skew
*Half-Duplex Versions
*Operate from a Single 5V Supply
*Current-Limiting and Thermal Shutdown for Driver Overload Protection
*Package:DIP-8/SOP-8
Grace Lei
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