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Description
The AMS1117 series of fixed/adjustable voltage regulators are designed by Advanced Monolithic Systems which can function efficiently at a temperature vary from -40℃~125℃. The dropout-voltage of the component is also low, which is calculated at 1.3V when operating at the maximum current.
The current limit is set to decrease the stress under overcharge conditions on both power source circuitry and the regulator.
It contains 3 pins and is widely used in all kinds of models that require voltage regulations. (summarized by Easybom)
Hints for Using
Due to the design of the circuit, AMS1117 requires the implementation of an output capacitor, which guarantees stability for all kinds of operating situations.
There’s no need for protection diodes to be deployed even the AMS1117 operates with a capacitor. However, it is recommended to apply a diode from output to input in the case that a crowbar circuit is used at the input of the AMS1117.
As is depicted in the table above, when AMS1117 is continually operating, considerations should be given on the junction temperature which should be held under no higher than 125°C.
In terms of resistance regulations, the ideal module of the effective resistance concerning the resistor divider R1 would be delivered in the formula below:
Main Illustration
Pin Assignment (crowbar circuits)
Part Symbol (SOT-223)
Footprint (SOT-223)
3D Model (SOT-223)
Features
- Adjustable of fixed linear voltage regulator
- 1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V for fixed voltage range
- Output Current of 1000mA • 5V to 3.3V Linear Regulator
- Operates Down to 1V Dropout
- Line Regulation: 0.2% Max.
- Load Regulation: 0.4% Max.
- SOT-223, TO-252 and SO-8 package are offered
Advantages
- RoHS Compliant
- High efficiency
- Higher current than Arduino’s output
- Minimal output 5V/1A
About the Manufacturer
Advanced Monolithic Systems (AMS) is a company based on “a complete customer satisfaction” standpoint, looking forward to building a sustainable strategic relationship with its customers.
To meet the most demanding needs of customers, AMS has established a customer alliance that is cooperative and responds quickly, which enhance AMS the capability to upgrading their market tactics to better serve the customers.
Datasheets Download
Alternates
| Part Number | Description | Manufacturer |
| LM1117MPX-3.3/NOPB | LDO Voltage Regulator, 0°C ~ 125°C , 2.6V to 15V in, 4-PIN, 1.2V drop, 1.25V to 13.8V/800mA out, Surface Mount, SOT-223-4, RoHS Compliant | TEXAS INSTRUMENTS |
| LM1117IMP-ADJ/NOPB | LDO Voltage Regulator,-40°C ~ 125°C, 2.6V to 15V in, 4-PIN, 1.2V drop, 1.25V to 13.8V/800mA out, Surface Mount, SOT-223-4, RoHS Compliant | TEXAS INSTRUMENTS |
| FAN1117ASX | LDO Voltage Regulator, 0°C ~ 125°C , 5V to 18V in, 3-PIN, 1.1V drop, 1.2V to 13.8V/1000mA out, SOT-223, RoHS Compliant | ONSEMI |
| NCP1117STAT3G | LDO Voltage Regulator, 0°C ~ 125°C, 3.5V to 20V in, 4-PIN, 1.07V drop, 1.25V to 18.8V/1A out, Surface Mount, SOT-223-3, , RoHS Compliant | ONSEMI |
Applications
- High-Efficiency Linear Regulators
- Post Regulators for Switching Supplies
- 5V to 3.3V Linear Regulator
- Active SCSI Terminators
- Power Management for Notebook
- Battery Powered Instrumentations
Advanced Monolithic Systems (AMS) is a company based on “a complete customer satisfaction” standpoint, looking forward to building a sustainable strategic relationship with its customers.
To meet the most demanding needs of customers, AMS has established a customer alliance that is cooperative and responds quickly, which enhance AMS the capability to upgrading their market tactics to better serve the customers.