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发布者:微桥FP5139B 发布时间:2010-1-6 阅读:6943次    关键字: FP5139B
FP5139B-BOOST CONVERT CONTROL IC


FP5139B  BOOST CONVERT CONTROL IC
General Description
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 The FP5139B is a boost topology switching regulator control IC for battery-used applications field. The FP5139B includes a totem-pole single output stage for driving NPN transistor or N-MOS, high precision reference (0.5V) for comparing output voltage with feedback amplifier, an internal dead-time control for controlling the minimum duty cycle, programmable soft start with short circuit protection function and logic level control for operating mode or standby mode.
Features
˙Wide supply voltage operating range: 1.8 to 15V
˙Reference voltage precision: 2%
˙Low current consumption: Operation Mode 5.5mA 
                                                     Standby-by Mode 1μA
˙High speed oscillator frequency: 1MHz max.
˙Programmable Soft Start function (SS)
˙Short Circuit Protection function(SCP)
˙Totem-pole output with adjustable on/off current 
    (for NPN transistors or n-channel MOSFET)
˙Logic level control stand-by mode function
˙Package: SOP8/TSSOP8/MSOP8

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