AMS1117-3.3

The AMS1117-3.3 from HGSEMI is a low-dropout (LDO) voltage regulator designed to provide a stable output voltage of 3.3 volts. This component is widely used in various electronic applications, including microcontrollers, sensors, and other digital circuits that require a reliable power supply.

Key Features:

1. Output Voltage: The AMS1117-3.3 specifically outputs a regulated voltage of 3.3V, making it suitable for powering devices that operate at this voltage level.

2. Input Voltage Range: It typically accepts a wide input voltage range, usually from 4.75V to 12V, allowing it to be used in various power supply configurations.

3. Dropout Voltage: The LDO features a low dropout voltage, typically around 1.1V at full load, which means it can maintain regulation even when the input voltage is only slightly above the output voltage. This is particularly useful in battery-powered applications where maximizing battery life is essential.

4. Output Current: The AMS1117-3.3 can deliver a maximum output current of up to 1A, making it suitable for powering a range of devices without overheating or shutting down.

5. Thermal Protection: The device includes built-in thermal shutdown protection, which prevents damage due to overheating. This feature is crucial for maintaining reliability in various operating conditions.

6. Short-Circuit Protection: It also has short-circuit protection, ensuring that the regulator can withstand fault conditions without sustaining damage.

7. Package Type: The AMS1117-3.3 is typically available in a compact SOT-223 or TO-220 package, which makes it easy to integrate into circuit boards with limited space.

8. Performance Characteristics: The regulator exhibits good transient response and low output noise, which is essential for sensitive electronic applications.

9. Application Areas: Common applications include power supplies for microcontrollers, portable devices, and other electronic circuits that require a stable 3.3V supply.

Pin Configuration:

The AMS1117-3.3 usually features three pins:

• Input (Vin): The pin where the input voltage is applied.
• Output (Vout): The pin that provides the regulated output voltage of 3.3V.
• Ground (GND): The pin connected to the ground of the circuit.

Conclusion:

The AMS1117-3.3 from HGSEMI is a versatile and reliable voltage regulator that is ideal for applications requiring a stable 3.3V output. Its low dropout voltage, thermal and short-circuit protection, and ability to deliver up to 1A of current make it a popular choice among engineers and designers in the electronics industry.