TI TPS7A30xx超低噪音负电压线性电源转换方案
TI 公司的TPS7A30xx是-36V/-200mA超低噪音负电压线性电源稳压器,具有CMOS逻辑电平兼容的使能引脚和电容可编程的软起动功能,内置了限流和热关断保护,输入电压-3V到-36V,可调输出电压从-1.18V到-33V,最大输出电流200mA,100mA的压降为216mV, 20Hz-20kHz的噪音为 14mVRMS,120Hz时的PSRR为72dB,主要用在运放,DAC,ADC和其它高精度模拟电路,音频,测试和测量,TX,RX和PA电路,基站和通信基础设备以及-12V和-24V工业总线.本文介绍了TPS7A30xx主要特性, 功能方框图和几种典型应用电路, TPS7A30-49EVM-567评估板电路图和材料清单.
TPS7A30xx:–36V,–200mA,Ultralow-Noise, Negative LINEAR REGULATOR
The TPS7A30xx series of devices are negative, high-voltage (–36V), ultralow-noise (15.1mVRMS, 72dB PSRR) linear regulators capable of sourcing a maximum load of 200mA.
These linear regulators include a CMOS logic-level-compatible enable pin and capacitor-programmable soft-start function that allows for customized power-management schemes. Other features available include built-in current limit and thermal shutdown protection to safeguard the device and system during fault conditions.
..
