AMS117-3.3 Regulator Schematic

kaknayan

create a schematic for AMS117-3V3 regulator, input is 5V & output is 3V3 fixed.

79 days

flux

1:03

Planning component integration.

Clarifying the schematic plan.

Detailing the project plan.

Crafting the plan execution.

Preparing the plan for schematic.

I’ll create a fixed 3.3 V regulator schematic from 5 V using AMS1117-3.3.

Plan:

Add AMS1117-3.3; define 5 V (VIN), 3.3 V (VOUT), and GND nets.
Add input/output caps per datasheet (e.g., 10uF Capacitor and 100nF Capacitor on VIN and VOUT).
Wire VIN to 5 V, VOUT to 3.3 V, connect grounds to Ground, and handle the tab per datasheet.
Label nets, set values, and run ERC.

Click Start to run this plan, or let me know if you want different capacitor values or footprints.

Plan

Goal

Implement a complete schematic for a fixed 3.3 V regulator using the AMS1117-3.3 (Kexin) from a 5 V supply. The design must follow the typical application circuit from the datasheet, including proper input/output bypass capacitors, correct ground connections, and wiring of all terminal pins (VI, VO, GND, TAB).

Implementation plan

Component placement and configuration
1. Place the AMS1117-3.3 regulator (MPN AMS1117-3.3, Kexin) into the schematic.
2. Verify that the component terminals (VI, VO, GND, TAB) are accessible.
Add supporting components
1. Add an input bypass capacitor between VI and GND. Choose a capacitor value as recommended by the datasheet (for example, 10 µF).
2. Add an output capacitor between VO and GND with the recommended value (for example, 10 µF) to ensure regulator stability.
Wiring and connection
1. Connect the 5 V supply to the VI terminal of the AMS1117-3.3.
2. Connect the VO terminal to the 3.3 V net.
3. Make sure all GND pins are connected to the common ground net.
4. Tie the TAB to ground as specified by the datasheet if required, ensuring thermal and electrical performance.
Final review
1. Run the ERC review to verify all connections and component placements meet the typical application circuit requirements.
2. Update designators and net labels as necessary for clarity.

Success criteria

The AMS1117-3.3 is correctly placed in the schematic with the appropriate power and ground connections.
Input and output capacitors are added and connected properly as per datasheet recommendations.
The 5 V supply and 3.3 V output nets are correctly wired to VI and VO, respectively.
All ERC checks pass, ensuring a complete and correct schematic implementation.

Pick capacitor values

Add reverse protection

Confirm tab connection

Need footprint guidance

How to label nets

79 days

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Reviews

Documents

Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

Assets

AP1117-15

defaultDefault

kicad_mod

SOT-223.kicad_mod

SOT-223Footprint

ams117-thumb.png

ams117-thumbThumbnail

step

SOT-223.step

3D_SOT-2233D Model

Project Name

AMS1117-3.3

Description

3V3 Linear Voltage Regulator IC Positive Adjustable 1 Output 1A SOT-223

Properties

Part Type

Integrated Circuit

Manufac… Number

AMS1117-3.3

Manufac…er Name

Kexin

Datasheet URL

lcsc.com/datasheet/lcsc_datasheet_2410122028_KEXIN-AMS1117-3-3_C369933.pdf

Designator Prefix

Pricing & Availability

Distributor	Qty 1

Controls

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jharwinbarrozo / AMS1117-3.3

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