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TPS7A4701射频LDO电压稳压器设计用于工业、仪器、医疗以及测试测量应用中所使用的噪声灵敏型精密模拟电路。此篇主要介绍了TPS7A4701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。

TPS7A4701特性：输入电压范围：+3V到+36V；输出电压噪声：4.17μVRMS(10Hz，100kHz)；压差：1A时为307mV；内置固定限流和热关断

TPS7A4701典型应用范围：压控振荡器（VCO）；频率合成器；仪器仪表、医疗、音频；+12V和+24V工业总线

TPS7A4701参考设计应用电路：

图1TPS7A4701内部结构图

TheTPS7A4700 and TPS7A4701 (TPS7A470x) are positive voltage (+36 V), ultralow-noise (4 µVRMS) LDOs capable of sourcing a 1-A load. The TPS7A470x is designed with bipolar technology primarily for high-accuracy,high-precision instrumentation applications where clean voltage rails are critical to maximize system Performance.

图2TPS7A4701参考设计图

TheTPS7A740x is a high-voltage, low-noise, 1-A LDO. Low-noise performance makes this LDO ideal for providing rail voltages to noise-sensitive loads, such as PLLs, oscillators, and high-speed ADCs.

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