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发布者:微桥FP5452 发布时间:2010-1-6 阅读:4433次    关键字: FP5452
FP5452-DUAL PWM CONTROL IC WITH SCP/DTC FUNCTION


FP5452 DUAL PWM CONTROL IC WITH SCP/DTC FUNCTION
General Description
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 The FP5452, a 1-chip composed of totem-pole output stage pulse-width-modulation control circuits with two error amplifiers and dead-time comparators (DTC), the FP5452 contains a 2.5V precision voltage reference regulator, under-voltage lockout circuit (UVLO), short circuit protection circuit (SCP), applied to offer space and low cost in many applications such as the DC/DC converter and backlight inverter.
 Using few external components, FP5452, a high performance integrated IC, is designed for a control circuit. The circuit diagram of the typical application example is as below.
 
Features
˙Fixed Reference Voltage: 2.5V
˙Reference Voltage Precision: 2% (FP5452)
˙Totem-pole output stage
˙Low quiescent supply current under 3.5mA
˙Wide operating voltage range: 3.6~40V
˙Variable dead-time control (DTC)
˙UVLO protection function
˙SCP protection function (threshold voltage: 1.3V)
˙Oscillator Frequency: Max. 500KHz
˙Package: SOP16/PDIP16/SSOP16
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