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发布者:微桥AX3482 发布时间:2011-2-15 阅读:5044次    关键字: AXELITE 亚瑟莱特 DC-DC 微桥 AX3482
AX3482-2A,23V,340kHz Synchronous Step-Down


AX3482-2A,23V,340kHz Synchronous Rectified Step-Down Converter DataSheet

GENERAL DESCRIPTION
    The AX3482 is a monolithic synchronous buck regulator. The device integrates two 130mΩ MOSFETs, and provides 2A of continuous load current over a wide input voltage of 4.75V to 23V. Current mode control provides fast transient response and cycle-bicycle current limit. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 1μA. This device, available in an 8-pin SOP package, provides a very compact solution with minimal external components.

FEATURES
- 2A Output Current
- Wide 4.75V to 23V Operating Input Range
- Integrated 130mΩ Power MOSFET Switches
- Output Adjustable from 0.923V to 20V
- Up to 93% Efficiency
- Programmable Soft-Start
- Stable with Low ESR Ceramic Output Capacitors
- Fixed 340KHz Frequency
- Cycle-by-Cycle Over Current Protection
- Input Under Voltage Lockout

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