代理FP7102 28V，2A降压恒流白光LED
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典型应用电路 Typical Application Circuits
FP7102 28V，2A降压恒流白光LED的电流开关稳压器
概述
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FP7102是一个PWM控制降压转换器设计驱动高功率LED提供一个简单，高效率的解决方案。随着0.25V参考电压反馈控制，使功耗降至，一个外部电阻设置电流，用于驱动LED的各类需要。FP7102包括高目前的P - MOSFET，以实现高效率和出色的瞬态特性。PWM控制电路是能够改变占空比从0到100％线性的。其他功能还包括用户访问的EN / DIM引脚启用和PWM调光的LED，热关断，逐周期电流限制和过电流保护。
特点
˙宽电源电压工作范围：3.6〜28V ˙内建2A负载能力的P - MOSFET ˙精密反馈参考电压：0.25V（2％）˙低电流消耗：4毫安˙内部固定的振荡器频率：320KHz（典型值）˙内部软启动功能，过电流保护（SS ）˙ ˙封装：SOP - 8L
FP7102 28V, 2A Buck Constant Current Switching Regulator for White LED
General Description
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The FP7102 is a PWM control buck converter designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.25V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for driving various types of LEDs. The FP7102 includes a high current P-MOSFET to realize high efficiency and excellent transient characteristics. The PWM control circuit is able to change the duty ratio linearly from 0 up to 100%. Other features include user accessible EN/DIM pin for enabling and PWM dimming of LEDs, thermal shutdown, cycle-by cycle current limit and over current protection.
Features
˙Wide Supply Voltage Operating Range: 3.6 to 28V
˙Built-in P-MOSFET for 2A Loading Capability
˙Precision Feedback Reference Voltage: 0.25V (2%)
˙Low Current Consumption: 4mA
˙Internal Fixed Oscillator Frequency: 320KHz (Typ.)
˙Internal Soft-Start Function (SS)
˙Over Current Protection
˙Package: SOP-8L
FP7102
台湾远翔
