BOM Risk Notes
Confirm lifecycle status, required quantity, destination country, and acceptable alternates before locking the order.
Power & Circuit Protection
AMS1117-3.3
Fixed 3.3V output, 1A LDO linear voltage regulator with 1.3V typical dropout, SOT-223 package.
Applications and Features
Primary Features
- Package: SOT-223
- Packaging: N/A
- RoHS: Compliant
Typical Applications
- Industrial and embedded DC/DC step-down power rails
- Low-noise post-regulation and analog supply cleanup
- Power & Circuit Protection related design scenarios
Product Overview
The AMS1117 series of adjustable and fixed voltage regulators are designed to provide up to 1A output current and to operate down to 1.2V input to output differential. The device is optimized for low dropout performance, and the on-chip trimming adjusts the reference voltage to 1.5% accuracy. Key Features: - Fixed 3.3V output - Output current: up to 1A - Dropout voltage: 1.3V typical at 1A - Line and load regulation: 0.2% typical - ±1.5% output voltage accuracy - Over-temperature and current-limit protection - SOT-223 SMD package - Widely used in USB-powered devices, IoT boards, and 3.3V rails
Procurement Notes
Use this page as a sourcing reference. Final availability, MOQ, lead time, and compliance assumptions should be confirmed through RFQ before ordering this part.
Substitute Selection Notes
When the original MPN is constrained, compare package, ratings, tolerance, temperature range, and compliance status before approving an alternate.
Typical Use Cases
Suitable for BOM review, maintenance sourcing, prototype replenishment, production-gap purchasing, and alternative-part screening.
Full Parameter Table
| Attributes | Value |
|---|---|
| Package / Case | SOT-223 |
| Operating Temperature | 0 to +125 °C |
| Accuracy Pct | 1.5 |
| Dropout Voltage V | 1.3 |
| Output Current A | 1 |
| Output Voltage V | 3.3 |