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| FP7103 28V, 3A Buck Constant Current Switching Regulator for White LED | | | General Description | | Download | The FP7103 is a PWM control buck converter designed to provide a simple, high efficiency solution for driving high powerLEDs. 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 FP7103 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 3A 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
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| FP7103 28V，3A恒流白光LED的电流开关稳压器 | | | 概述 | | 下载 | FP7103是一个PWM控制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，使功耗降至最低，一个外部电阻设置电流，用于驱动LED的各类需要。FP7103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 ˙内置3A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
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