LP38798 参考设计电路|线性稳压器应用电路

LP38798线性稳压器为高性能器件，可提供800mA的输出电流。此篇主要介绍了LP38798特性、应用范围、参考设计电路以及电路分析，帮助大家缩短设计时间。

LP38798特性：超低输出噪音：5µVRMS(10Hz至100kHz)；限流和过温保护；出色的线性和负载瞬态响应；宽运行输入电压范围：3.0V至20V

LP38798典型应用范围：RF和VCO电源；无线LAN设备；无线电缆调制解调器；低噪音后置整流器

LP38798参考设计应用电路：

图1LP38798内部结构图

TheLP38798-ADJ is a high-performance linear regulator capable of supplying 800 mA output current regulator capable of supplying 800 mA output current RF/Analog circuitry, the LP38798-ADJ implements a novel linear topology on an advanced CMOS process to deliver ultra-low output noise and high PSRR at switching power supply frequencies.

图2LP38798参考设计图

TheLP38798 is a positive voltage (20 V), ultra-low-noise (5 µVRMS), low-dropout (LDO) regulator capable of supplying a well-regulated, low-noise voltage to an 800-mA load. The LP38798 uses an advanced design with a CMOS process to deliver ultra low output noise and high PSRR at switching power supply (SMPS) frequencies.

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