AZ1117H-1.2TRG1

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

The AZ1117H-1.2TRG1 is a positive fixed-output linear regulator from the AZ1117 series, manufactured by Diodes Incorporated (originally BCD Semiconductor). It provides a fixed output voltage of 1.2V with a maximum continuous output current of 1A. The device operates within an input voltage range up to 15V and features a typical dropout voltage of 1.1V at 0.1A load. It includes on-chip thermal shutdown and trimmed current limiting for protection. The component is housed in a SOT-223 package and supports an operating junction temperature range of -40°C to 125°C.

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

• Integrated thermal shutdown protects against excessive junction temperatures caused by overload or ambient heat.
• Trimmed current limit ensures specified output current capability and controlled short-circuit behavior.
• Utilizes a precision trimmed bandgap reference to maintain tight output voltage accuracy.

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

• PC Motherboard power distribution
• LCD Monitor voltage regulation
• Graphic Card auxiliary power supplies
• DVD-video Player circuitry
• Telecom Equipment power management

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

Verify that the ordering suffix TRG1 corresponds to the Green RoHS-compliant tape and reel packaging variant. Confirm the manufacturer source, as the datasheet indicates BCD Semiconductor Manufacturing Limited as the original publisher, while Diodes Incorporated is the current distributor/brand holder. Ensure the specific lot matches the required lead-free specifications.

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

Select this part when a stable 1.2V rail is required for digital logic or memory components drawing up to 1A. The SOT-223 package offers a balance between thermal dissipation and board space compared to smaller packages. Consider the 1.1V dropout characteristic relative to the available input voltage headroom to ensure regulation under maximum load conditions.

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

This component belongs to the AZ1117 family of low dropout three-terminal regulators. The 'H' designation specifically identifies the SOT-223 surface-mount package configuration. The '1.2' indicates the fixed 1.2V output version, distinct from adjustable or other voltage variants within the same series.

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

AZ1117H-1.2TRE1

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

What is the output voltage accuracy for the 1.2V version?

The output voltage accuracy for the 1.2V version is guaranteed within 2%, whereas other fixed versions like 1.5V through 5.0V are accurate within 1%.

How does the device handle short-circuit conditions?

The current limit is trimmed to ensure controlled short-circuit current, preventing damage during fault conditions while maintaining specified output current capabilities.