The AMS1117 is a 1 A low-dropout linear regulator available in fixed (1.2–5.0 V) and adjustable versions with SOT-223, TO-252, and SO-8 packages.
Product Overview
The AMS1117 is a widely used LDO that delivers a stable DC output from a higher DC input, up to 1 A with a maximum dropout of 1.3 V at full load. It is offered in fixed 1.2 / 1.5 / 1.8 / 2.5 / 2.85 / 3.3 / 5.0 V outputs and an adjustable variant referenced to 1.25 V, making it a common choice for post-regulation and 5 V-to-3.3 V conversion.
Newfly supplies verified, RoHS-compliant AMS1117-class regulator ICs with cross-reference and BOM-matching support for production sourcing.
Key Features
- – 1 A output current
- – Low dropout (1.3 V max at full load)
- – Fixed outputs 1.2–5.0 V; adjustable variant
- – ±1% initial accuracy (adjustable reference 1.25 V)
- – Thermal shutdown and current limiting
- – SOT-223 / TO-252 / SO-8 packages
- – RoHS-compliant
Technical Specifications
| Parameter | Specification |
|---|---|
| Topology | Low-dropout (LDO) linear |
| Output Current | 1 A |
| Dropout Voltage | 1.3 V max @ 1 A (verify with manufacturer datasheet) |
| Output Voltage | Fixed 1.2–5.0 V; Adjustable 1.25 V reference |
| Input Voltage | Up to 15 V (verify with manufacturer datasheet) |
| Accuracy | ±1% (fixed) |
| Package | SOT-223, TO-252, SO-8 (verify variant) |
| Compliance | RoHS |
Applications
– Embedded systems
– Consumer electronics
– Industrial control boards
– Post-regulator for switch-mode power supplies
– 5 V-to-3.3 V conversion
– Battery chargers
Why Choose Newfly Electronics
– Verified sourcing from ISO9001-certified manufacturers
– MOQ flexibility with small-quantity and prototype sourcing support
– Alternative-part and cross-reference service for LDO voltage regulators
– Full-board BOM sourcing to consolidate your component purchasing
– RoHS / REACH documentation support for compliance filing
FAQ
Q: What is the dropout voltage of the AMS1117?
A: Up to 1.3 V at 1 A load; it decreases at lighter loads.
Q: Which packages are available?
A: Common packages include SOT-223, TO-252, and SO-8 — confirm the variant with the datasheet.
Q: Can you provide a cross-reference?
A: Yes. Share your BOM and Newfly will suggest compatible LDO regulator ICs.
