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发布者:微桥FP5453 发布时间:2010-1-6 阅读:4559次    关键字: FP5453
FP5453-DUAL PWM CONTROL IC SHORT CIRCUIT RESTART


FP5453 DUAL PWM CONTROL IC WITH SHORT CIRCUIT RESTART FUNCTION
General Description
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 The FP5453, a 1-chip composed of totem-pole output stage pulse-width-modulation control circuits with two error amplifiers and dead-time comparators (DTC), the FP5453 contains a 2.5V precision voltage reference regulator, under-voltage lockout circuit (UVLO), programmable auto-restart timer for short circuit protection (SCSAR), applied to offer space and low cost in many applications such as the DC/DC converter.
 Using few external components, FP5453, 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%
˙Totem-pole output stage
˙Low quiescent supply current under 4mA
˙Wide operating voltage range: 3.6~25V
˙Variable dead-time control (DTC)
˙UVLO protection function
˙Short circuit shutdown/auto re-start function (SCSAR)
˙Oscillator Frequency: Max. 1.2MHz
˙Package: SOP16/PDIP16/SSOP16/SOP16(EP)
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