代理DC/DC降压IC- FP5453

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FP5453 DUAL PWM CONTROL IC WITH SHORT CIRCUIT RESTART FUNCTION

General Description

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　The FP5453 is a single chip composed of a 2.5V precision voltage reference regulator, totem-pole output stages, two pulse width modulation control circuits each with one error amplifier and duty comparator (DTC). Its built-in functions includes under-voltage lockout circuit (UVLO) and programmable auto-restart timer for short circuit protection (SCSAR). With above features, it offers space and low cost solutions in many applications such as the DC / DC converter.
FP5453, a high performance IC, is designed to complete a control circuit with few external components. The circuit diagram of the typical application example is shown in below.

Features

˙Wide Operating Voltage Range: 3.6~25V
˙Feedback Reference Voltage: 2.5V
˙Oscillator Frequency: Max. 1.2MHz
˙Reference Voltage Precision: 2%
˙Low Quiescent Supply Current Under 4mA
˙Totem-pole Output Stage
˙Variable Duty Control (DTC)
˙Short Circuit Shutdown / Auto Re-start Function (SCSAR)
˙UVLO Protection Function
˙Package: SOP-16L / SOP-16L (EP) / SSOP-16L

FP5453双PWM控制IC有短路重启功能

概述

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FP5453是一个2.5V精密参考电压调节器，图腾柱输出阶段，两个脉冲宽度调制，每一个错误的放大器和义务比较器（DTC）控制电路组成一个单一的芯片。其内置的功能包括欠压锁定电路（UVLO）和可编程的自动重启动定时器短路保护（SCSAR）。与上述功能，它提供了许多应用，如DC / DC转换空间和低成本的解决方案
。FP5453，高性能IC，设计完成与极少的外部元件控制电路。下面所示的典型应用示例的电路图。

特点

˙宽工作电压范围：3.6〜25V ˙反馈参考电压：2.5V ˙振荡器频率：最大。1.2MHz的˙参考电压精度：2％˙低静态电源电流在4毫安˙图腾柱输出级 ˙可变占空比控制（DTC）˙短路关断/自动重启动功能（SCSAR）˙ UVLO保护功能˙封装：SOP - 16L / SOP - 16L（EP）/ SSOP - 16L

型号/规格

FP5453

品牌/商标

台湾远翔