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The AMS1117-3.3 is a fixed 3.3 V LDO regulator capable of supplying up to 1 A (in optimal conditions). It is designed to convert higher input voltages down to 3.3 V with relatively low dropout, and includes protections like thermal shutdown and current limit. It is available in several packages including SOT-89
| Parameter | Value / Range | Conditions / Notes |
|---|---|---|
| Output Voltage | ~3.235 to 3.300 V | Iout = 10 mA, Vin ≥ 4.75 V |
| Line Regulation | ≤ ~6 mV | for a given input range |
| Load Regulation | ≤ ~10 mV | across load current range |
| Dropout Voltage | ~1.15 V (typical) | at Iout = 1 A |
| Output Current Limit | ~1.25 – 1.35 A | internal current limiting |
| Quiescent Current | ~5 to 10 mA | typical in normal operation |
| Ripple Rejection (PSRR) | ~60–75 dB (at 120 Hz) | with appropriate output capacitor |
| Operating Temperature | –40 °C to +125 °C | typical for device |
| Maximum Input Voltage | 20 V (absolute max) | |
| Thermal Shutdown | ~150 °C | internal protection |
| Package | SOT-89 (3 leads) | one of the available packages |
| Recommended Output Capacitor | ≥ 10 μF (tantalum or low ESR) | required for stability |
| Weight | 0.005 kg |
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