AZ1117EH-1.2TRG1

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The AZ1117EH-1.2TRG1 is a discontinued low-dropout three-terminal linear regulator from the AZ1117E series, manufactured by Diodes Incorporated. It provides a fixed 1.2V output with a maximum current capability of 1.0A and a typical dropout voltage of 1.1V at full load. The device operates within a supply voltage range up to 13V and features an operating junction temperature range of -40°C to +125°C. It incorporates a trimmed bandgap reference for ±1% output accuracy, thermal shutdown protection, and current limiting. The component is housed in an industry-standard SOT-223 package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Optimized for low-voltage applications requiring stable transient response and minimal input voltage headroom.
• Integrated thermal shutdown circuitry protects against excessive junction temperatures caused by high current or ambient heat.
• Compatible with low ESR multilayer ceramic capacitors (MLCC) for stable operation without additional bulk capacitance.
• Includes internal current limiting to manage short-circuit conditions and protect the regulator.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Televisions
• LCD Monitors
• Set-top boxes (STB)
• Notebook computers
• Motherboards

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

This specific part number is officially marked as obsolete and discontinued by the manufacturer. Procurement must focus on verifying the authenticity of remaining stock from authorized distributors or secondary markets. Ensure that any available units match the original specifications and packaging requirements, as replacement sourcing may require evaluating alternative compatible components.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Designers should consider the AZ1117C series as a functional successor within the same product family. While the AZ1117E offers specific performance characteristics such as a 1.1V typical dropout, the AZ1117C provides similar regulation capabilities in comparable packages. Verify that the pinout and electrical parameters of the replacement align with the existing design constraints before implementation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The AZ1117E series represents a line of low-dropout regulators designed for cost-sensitive consumer electronics. This specific model delivers a fixed 1.2V output, catering to digital logic power supplies. The series emphasizes stability with ceramic capacitors and includes robust protection features like thermal shutdown. Although discontinued, it remains a documented example of standard LDO architecture used in portable and display devices.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The datasheet explicitly recommends using the AZ1117C series as a substitute for the discontinued AZ1117E parts.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the typical dropout voltage for this regulator?

The typical dropout voltage is specified as 1.1V when the output current is 1.0A.

Is the AZ1117EH-1.2TRG1 currently in production?

No, the component is officially listed as obsolete and discontinued by Diodes Incorporated.

What type of output capacitors are recommended for stability?

The regulator is stable with low ESR multilayer ceramic capacitors (MLCC), requiring a minimum of 1.0µF on both input and output.