厂商：Freescale
类别：16位单片机
厂商：
类别：保险丝
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Atmel
类别：EEPROM
类别：ATmega系列单片机
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特点Synchronous Rectification: Up to 97% Efficiency1A Switch Current RatingFixed Frequency Operation Up to 3MHzWide Input Range: 0.5V to 5V (Operating)Very Low Quiescent Current: 38μA (Burst Mode? Operation)2.6V to 5V Adjustable Output Voltage0.85V (Typ) Start-Up Voltage No External Schottky Diode Required (V OUT < 4.3V) Synchronizable Switching FrequencyBurst Mode Enable ControlAntiringing Control Reduces Switching NoisePGOOD Output OPTI-LOOP ? Compensation Very Low Shutdown Current: <1μA Small 10-Pin MSOP Package 典型应用典型应用描述The LTC?3401 is a high efficiency, fixed frequency, step-up DC/DC converter that operates from an input voltage below 1V. The device includes a 0.16 Ohms N-channel MOSFET switch and a 0.18 Ohms P-channel synchronous rectifier. Switching frequencies up to 3MHz are programmed with an external timing resistor and the oscillator can be synchronized to an external clock. An external Schottky diode is optional but will slightly improve efficiency.Quiescent current is only 38μA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the MODE/SYNC pin high. If the MODE/SYNC pin has either a clock or is driven low, then fixed frequency switching is enabled.Other features include 1μA shutdown, antiringing control, open-drain power good output, thermal shutdown and current limit. The LTC3401 is available in the 10-lead thermally enhanced MSOP package. Higher current applications should use the 2A rated LTC3402 synchronous boost converter. Applications that require V OUT < 2.6V should use the LTC3423.