AP2138N-3.3TRG1

The AP2138N-3.3TRG1 is a low-dropout (LDO) voltage regulator manufactured by Diodes Incorporated. It is designed to provide a stable output voltage of 3.3V, making it suitable for various applications in consumer electronics, telecommunications, and industrial devices.

Key Features:

1. Output Voltage: The AP2138N-3.3TRG1 delivers a fixed output voltage of 3.3V, which is ideal for powering microcontrollers, sensors, and other low-voltage devices.

2. Input Voltage Range: The device can accept a wide input voltage range, typically from 2.5V to 5.5V, allowing it to be used in various power supply configurations.

3. Low Dropout Voltage: With a low dropout voltage of around 200mV at a 500mA load, the AP2138N-3.3TRG1 can maintain regulation even when the input voltage is close to the output voltage, which is particularly useful in battery-powered applications.

4. Output Current: The regulator can provide up to 800mA of output current, making it suitable for powering devices that require moderate current levels.

5. Thermal Protection: The device includes built-in thermal shutdown protection, which helps prevent damage due to overheating by shutting down the regulator if the junction temperature exceeds a certain threshold.

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

7. Low Quiescent Current: The AP2138N-3.3TRG1 has a low quiescent current, typically around 30µA, which enhances efficiency, especially in battery-operated devices.

8. Package Type: The regulator is available in a compact SOT-23-5 package, which is suitable for space-constrained applications. This package type also aids in thermal dissipation.

9. Stability: The device is designed to be stable with a wide range of output capacitors, including ceramic capacitors, which are commonly used in modern electronic designs.

10. Applications: Typical applications for the AP2138N-3.3TRG1 include portable devices, battery management systems, and any application requiring a reliable 3.3V power supply.

Electrical Characteristics:

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage: 3.3V
• Maximum Output Current: 800mA
• Dropout Voltage: 200mV (at 500mA)
• Quiescent Current: 30µA (typical)
• Thermal Shutdown: Yes
• Short-Circuit Protection: Yes

Conclusion:

The AP2138N-3.3TRG1 from Diodes Incorporated is a versatile and efficient LDO voltage regulator that provides a reliable 3.3V output with a range of protective features. Its low dropout voltage, low quiescent current, and compact package make it an excellent choice for a variety of electronic applications, particularly where space and power efficiency are critical.