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RTQ2538H 是负载能力达 2A 的低噪声、低压差、高精度线性稳压器,最低输入电压可达 1.1V,易于使用。低噪声、高 PSRR、大电流能力使 RTQ2538H 成为对电源噪声敏感的模数转换器、数模转换器和射频器件的理想供电器件。因其输出精度高、采用遥测技术,可用软启动降低冲击电流,RTQ2538H 也是FPGA、DSP 和 ASIC 等数字器件常用的电源方案。它具有易于进行时序控制的外部使能输入端和 Power Good 指示,通过在 NR/SS 引脚增加外接旁路电容可增强其抑制输出噪声的效果。器件之规格在 TJ = -40°C 至 125°C 范围内都能得到保证,其出货封装为 WQFN-12L 2.2x2.5 (FC)。
输入电压范围:1.1V至6.5V
输出电压范围:0.8V至5.5V
全输入、负载和温度范围内的输出电压精度为 1%
PSRR:43dB @ 500kHz
卓越的噪声抑制能力►7.8μV @ 0.8V 输出►12.8μV @ 5V 输出
最低输入、输出压差:90mV @ 2A
使能控制
可调软启动
47μF 或更大的陶瓷输出电容均可稳定工作
Power Good 指示输出
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