The SP6203/6205 are ultra low noise CMOS LDOs with very low dropout and ground current. The noise performance is achieved by means of an external bypass capacitor without sacrificing turn-on and turn-off speed critical to portable applications. Extremely stable and easy to use, these devices offer excellent PSRR and Line/Load regulation. Target applications include battery-powered equipment such as portable and wireless products. Regulators' ground current increases with increasing output current.
The SP6203/6205 are ultra‑low‑noise CMOS LDO regulators offering very low dropout voltage, low quiescent current and excellent PSRR, suitable for battery‑powered and portable applications such as cellular phones, laptops, medical devices and MP3 players. Both fixed‑output and adjustable‑output versions are available in industry‑standard 5‑pin SOT‑23 and 8‑pin DFN packages.
The document lists absolute maximum and operating ratings, detailed electrical characteristics, pin descriptions, typical performance curves, theory of operation, and ordering information including part numbers for each voltage version and package type.
| Maximum Output Current (Fixed) | 300 mA (SP6203) / 500 mA (SP6205) |
|---|---|
| Quiescent Current | 45 pA |
| Ground Pin Current | 350 µA at 500 mA |
| Shutdown Supply Current | < 1 pA |
| Power Supply Rejection Ratio (PSRR) | 67 dB at 1 kHz |
| Turn‑On Time | 60 µs |
| Output Noise (with 10 nF bypass) | 12 µV |
| Package Options | 5‑pin SOT‑23, 8‑pin DFN |
| Operating Temperature Range | -40 °C to +125 °C |
The SP6205 provides a fixed output current of 500 mA.
The quiescent current is only 45 pA.
Both 5‑pin SOT‑23 and 8‑pin DFN packages are offered.