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发布者:微桥 发布时间:2012-1-13 阅读:6152次    关键字: DC-DC
EML3230-3A,23V,340KHz Synchronous DC-DC Converter


EML3230-3A,23V,340KHz Synchronous Step-Down Converter DataSheet 

General Description
    The EML3230 is a synchronous step-down DC/DC converter that provides wide 4.5V to 23V input voltage range and 3A continuous load current capability. Fault protection includes cycle-by-cycle current limit, input UVLO, output over voltage protection and thermal shutdown. Besides, adjustable soft-start function prevents inrush current at turn-on. This device uses current mode control scheme that provides fast transient response. In shutdown mode, the supply current is about 10uA.
    The EML3230 is available in an 8-pin SOP package, provides a very compact system solution and good thermal conductance.

Features
􀂄 Wide Input Voltage from 4.5V to 23V
􀂄 3A Output Current
􀂄 Adjustable Output Voltage from 0.925V to 20V
􀂄 100mΩ integrated Power MOSFET
􀂄 High Efficiency Up to 93%
􀂄 Fixed 340KHz Switching Frequency
􀂄 Current Mode Operation
􀂄 Adjustable Soft-Start
􀂄 Cycle-by-Cycle current limit
􀂄 Input Under Voltage Lockout
􀂄 Over-Temperature Protection
􀂄 10uA Shutdown Current
􀂄 Thermal Enhanced SOP-8 Package
􀂄 RoHS Compliant

Applications
􀂄 Set-Top-Box
􀂄 DVD, LCD Displays
􀂄 OLPC, Netbook
􀂄 Distributed Power System
􀂄 Datacom, XDSL

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