厂商：Freescale
类别：16位单片机
厂商：Yageo
类别：通孔电阻器
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Atmel
类别：EEPROM
类别：8051单片机
厂商：TDK
类别：压敏电阻
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特点High Efficiency: Up to 94%Peak Inductor Current Independent of Inductor ValueShort-Circuit ProtectionOptimized for 5V to ±5V Applications Wide V IN Range: 4V to 18.5V Low Dropout OperationLow-Battery DetectorPin Selectable Current Limit Internal 0.9 Ohms Power Switch: V IN = 9V Only Four External Components Required130μA Standby CurrentActive Low Micropower Shutdown典型应用典型应用描述描述 The LTC?1174 is a simple current mode DC/DC converter ideally suited for 9V to 5V, 5V to 3.3V or 5V to ±5V operation. With an internal 0.9 Ohms switch (at a supply voltage of 9V), the LTC1174 requires only four external components to construct a complete high efficiency DC/DC converter. Under a no load condition the LTC1174 draws only 130μA. In shutdown, it draws a mere 1μA making this converter ideal for current sensitive applications. In dropout, the internal P-channel MOSFET switch is turned on continuously allowing the user to maximize the life of the battery source. The maximum inductor current of the LTC1174 family is pin selectable to either 340mA or 600mA, optimizing efficiency for a wide range of applications. Operation up to 200kHz permits the use of small surface mount inductors and capacitors. For applications requiring higher output current or ultra-high efficiency, see the LTC1148 data sheet.