Ultralow-noise CMOS linear regulator provides a fixed 3.3 V output option with up to 150 mA output current. The regulator operates from a 2.2 V to 5.5 V input range and has 105 mV typical dropout at 150 mA load. Output noise is 9 µV rms without an added noise-bypass capacitor, and PSRR is 70 dB at 10 kHz. The device uses 1 µF ceramic input and output capacitors and includes logic-controlled enable, current limit, and thermal overload protection.
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| Regulator Type | CMOS linear regulator |
| Output Voltage | 3.3V |
| Maximum Output Current | 150mA |
| Input Voltage Range | 2.2 to 5.5V |
| Dropout Voltage | 105 typical at 150 mA loadmV |
| Output Noise | 9µV rms |
| Quiescent Current | 10 at zero loadµA |
| Shutdown Current | <1µA |
| Initial Output Voltage Accuracy | ±1% |
| PSRR | 70 at 10 kHzdB |
| Recommended Input Capacitor | 1 ceramicµF |
| Recommended Output Capacitor | 1 ceramicµF |
| Operating Junction Temperature Range | -40 to +125°C |
| Operating Ambient Temperature Range | -40 to +85°C |
| Protection Features | Current limit and thermal overload protection |
| Enable Control | Logic-controlled enable |
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