AZ1117H-1.5TRG1

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

The AZ1117H-1.5TRG1 is a positive fixed-output linear regulator from the AZ1117 series, manufactured by Diodes Incorporated (originally BCD Semiconductor). It provides a stable 1.5V output with a maximum continuous current of 1A. The device operates within an input voltage range up to 15V and features a typical dropout voltage of 1.15V at full load. It includes integrated thermal shutdown and trimmed current limiting for protection. The component is housed in a surface-mount SOT-223 package and supports an operating junction temperature range from -40°C to +125°C.

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

• Low dropout voltage capability of 1.15V at 1A output current
• Integrated on-chip thermal shutdown protection against excessive junction temperatures
• Trimmed current limit ensuring specified output current and controlled short-circuit conditions

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

• PC Motherboard power regulation
• LCD Monitor supply circuits
• Graphic Card voltage stabilization
• DVD-video Player power management
• Telecom Equipment and ADSL Modems

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

Verify that the ordering suffix TRG1 corresponds to the tape and reel packaging format and green compliant status as defined in the manufacturer's ordering information table. Confirm the H package designation matches the required SOT-223 footprint for your PCB layout. Ensure the specific part number aligns with the 1.5V fixed output variant rather than adjustable or other voltage versions.

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

Select this component when a fixed 1.5V rail is required with up to 1A load capacity. The SOT-223 package offers a balance between thermal dissipation and board space efficiency compared to smaller packages. Consider the 1.15V dropout requirement to ensure sufficient input-to-output voltage differential under all operating conditions. Verify compatibility with the target application's thermal environment given the 120°C/W thermal resistance characteristic of this package.

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

This device belongs to the AZ1117 family of low dropout linear regulators. The series encompasses various fixed voltage options including 1.2V, 1.8V, 2.5V, 3.3V, and 5.0V, alongside an adjustable version. While originally documented by BCD Semiconductor Manufacturing Limited, the product line is now associated with Diodes Incorporated. The H suffix specifically denotes the SOT-223 surface mount package configuration.

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

AZ1117H-1.5TRE1

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

What is the output voltage accuracy for the 1.5V fixed version?

The circuit includes a trimmed bandgap reference to assure output voltage accuracy within 1% for the 1.5V fixed version.

How does the device protect against overload conditions?

The AZ1117H-1.5TRG1 provides protection through on-chip thermal shutdown to prevent excessive junction temperature and a trimmed current limit to manage short-circuit currents.