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发布者:微桥 发布时间:2012/12/31 阅读:8198次    关键字: LED
Axelite announced AX3050/51 Car Charger IC


1.8/2.8A, Wide-Input  Sensorless  CC/CV  Step-Down DC/DC Converter

AX3050 DataSheet    AX3051 DataSheet

    AX3050/51 are a wide input voltage, high efficiency Active CC step-down DC/DC converter that operates in  either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.

    AX3050/51 consists of step-down switching regulator with PWM control. The device includes a reference voltage source, oscillation circuit, error amplifier and etc. AX3050/51 provides low-ripple power, high efficiency, and excellent  transient characteristics. The PWM control circuit is able to the duty ratio linearly forms 0 up to 90%.

    An  over  current  protection  function  is  built  outside  that  it  can  set  by  a  resistance.  An external compensation is easily to system stable; the low ESR output capacitor can be used.

    With the addition of an internal N-channel Power MOS, a coil, capacitors, and  a diode  connected  externally, these ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coupled with the SOP-8L-EP packages, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage up to 36V.

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