厂商：Freescale
类别：16位单片机
厂商：Linear
类别：开关稳压器
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Regulated Output with Input Above, Below or Equal to the OutputSingle Inductor, No Schottky DiodesHigh Efficiency: Up to 96%28μA Quiescent Current in Burst Mode? OperationUp to 1.2A Continuous Output Current from a Single Lithium-IonTrue Output Disconnect in Shutdown2.4V to 5.5V Input Range2.4V to 5.25V Output Range600kHz Fixed Frequency OperationSynchronizable OscillatorSelectable Burst Mode or Fixed Frequency Operation<1μA Quiescent Current in ShutdownSmall, Thermally Enhanced 12-Lead (4mm × 3mm × 0.8mm) DFN package典型应用典型应用描述The LTC?3443 is a high efficiency, fixed frequency, buckboost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The part is pin for pin compatible with its predecessor, the LTC3441, with a lower operating frequency (600kHz), and a V C pin clamp circuit during Burst Mode operation. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for single Lithium Ion or multicell applications where the output voltage is within the battery voltage range.The device includes two 0.10? N-channel MOSFET switches and two 0.11? P-channel switches. External Schottky diodes are optional, and can be used for a moderate efficiency improvement. The operating frequency is internally set to 600kHz and can be synchronized up to 1.2MHz. Quiescent current is only 28μA 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 is driven low or with a clock, then fixed frequency switching is enabled.Other features include a 1μA shutdown, soft-start control, thermal shutdown and current limit. The LTC3443 is available in a thermally enhanced 12-lead (4mm × 3mm) DFN Package.