产品概览
The TPS73101DBVR from TI is an adjustable 150 mA very low noise LDO regulator with only 30 µVRMS output noise and 75 mV dropout at full load. The 72 dB PSRR makes it ideal for noise-sensitive RF and analog power rails such as VCOs, PLLs, and LNAs.
主要规格
| 功能 | Adjustable, 150mA very low noise LDO |
| 输出电流 | 150 mA |
| Dropout Voltage | 75 mV at 150 mA |
| Output Noise | 30 µVRMS (10Hz-100kHz) |
| PSRR | 72 dB at 1 kHz |
| 电源电压 | 2.7V to 5.5V |
| 包装 | SOT-23-5 (2.9×1.6mm) |
工作原理
PMOS pass element with error amplifier and bypassed internal reference achieves ultra-low 30 µVRMS noise. An external bypass capacitor on the NR pin filters reference noise. The adjustable output is set by an external resistor divider from OUT to FB. 75 mV dropout at 150 mA allows operation from batteries near their end-of-life voltage.
应用
- RF VCO / PLL power
- LNA supply
- Precision analog rail
- Low-noise sensor excitation