厂商：Freescale
类别：16位单片机
厂商：Linear
类别：线性稳压器（LDO ）
厂商：Yageo
类别：芯片电阻
厂商：
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Panasonic
类别：板到板窄间距连接器
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特点Tiny 5-Lead SOT-23 PackageUses Tiny Capacitors and InductorHigh Frequency Operation: 1MHzHigh Output Current: 500mA Low R DS(ON) Internal Switch: 0.28 Ohms High Efficiency: Up to 94%Current Mode Operation for Excellent Line and Load Transient ResponseShort-Circuit ProtectedLow Quiescent Current: 135μA (LTC1701)Low Dropout Operation: 100% Duty Cycle Ultralow Shutdown Current: I Q < 1μA Peak Inductor Current Independent of Inductor Value Output Voltages from 5V Down to 1.25V 典型应用典型应用描述The LTC ? 1701/LTC1701B are the industry's first SOT-23 step-down, current mode, DC/DC converters. Intended for low to medium power applications, they operate from 2.5V to 5.5V input voltage range and switch at 1MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. The output voltage is adjustable from 1.25V to 5V. A built-in 0.28 Ohm switch allows up to 0.5A of output current at high efficiency. OPTI-LOOP? compensation allows the transient response to be optimized over a wide range of loads and output capacitors.The LTC1701 incorporates automatic power saving BurstMode? operation to reduce gate charge losses when the load current drops below the level required for continuous operation. The LTC1701B operates continuously to very low load currents to provide low ripple at the expense of light load efficiency. With no load, the LTC1701 draws only 135μA. In shutdown, both devices draw less than 1μA, making them ideal for current sensitive applications.Their small size and switching frequency enables a complete DC/DC converter function to consume less than 0.3 square inches of PC board area.?