The AZ1117IH-ADJTRG1 is a low dropout (LDO) voltage regulator manufactured by Diodes Incorporated. It is designed to provide a stable output voltage with a low dropout voltage, making it suitable for various applications where space and efficiency are critical. Below is a detailed overview of its specifications, features, and applications.

## Overview

The AZ1117IH-ADJTRG1 is an adjustable LDO regulator that can output a voltage ranging from 1.25V to 12V, depending on the external resistor configuration. It is particularly useful in battery-powered devices and other applications where power efficiency is essential.

## Key Features

1. Adjustable Output Voltage: The output voltage can be set using two external resistors, allowing for flexibility in design.
2. Low Dropout Voltage: The device features a low dropout voltage of typically 1.1V at full load, which helps maintain regulation even when the input voltage is close to the output voltage.
3. High Output Current: The AZ1117 can deliver up to 1A of output current, making it suitable for a variety of load requirements.
4. Wide Input Voltage Range: The input voltage range is from 1.25V to 15V, providing versatility for different applications.
5. Thermal Protection: The device includes thermal shutdown protection to prevent damage from overheating.
6. Short-Circuit Protection: It features current limiting to protect against short circuits.
7. Low Quiescent Current: The quiescent current is low, which is beneficial for battery-operated devices.
8. Compact Package: The AZ1117IH-ADJTRG1 is available in a small SOT-223 package, which is ideal for space-constrained applications.

## Electrical Specifications

- Output Voltage Range: 1.25V to 12V (adjustable)
- Input Voltage Range: 1.25V to 15V
- Output Current: Up to 1A
- Dropout Voltage: Typically 1.1V at 1A load
- Quiescent Current: Approximately 5mA
- Temperature Range: -40°C to +125°C
- Line Regulation: 0.2% (typical)
- Load Regulation: 0.5% (typical)
- Ripple Rejection: 70dB (typical at 1kHz)

## Applications

The AZ1117IH-ADJTRG1 is suitable for a wide range of applications, including:

- Power Management: Used in power supply circuits for microcontrollers, DSPs, and other digital devices.
- Battery-Powered Devices: Ideal for portable electronics where low dropout and low quiescent current are essential.
- Consumer Electronics: Commonly found in devices such as smartphones, tablets, and other handheld devices.
- Communication Equipment: Used in RF and communication devices requiring stable voltage regulation.
- Automotive Applications: Suitable for automotive electronics that require reliable voltage regulation under varying conditions.

## Conclusion

The AZ1117IH-ADJTRG1 from Diodes Incorporated is a versatile and efficient adjustable LDO voltage regulator that meets the demands of modern electronic applications. Its combination of low dropout voltage, adjustable output, and robust protection features make it an excellent choice for designers looking to optimize power management in their circuits. Whether in consumer electronics, automotive applications, or battery-powered devices, the AZ1117IH-ADJTRG1 provides reliable performance and flexibility.