AZ1117H-1.8TRE1

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

The AZ1117H-1.8TRE1 is a fixed positive linear regulator from Diodes Incorporated, delivering a stable 1.8V output at up to 1A current in an SOT-223 package. It features a maximum dropout voltage of 1.25V at full load and supports input voltages up to 15V. The device includes integrated thermal shutdown and trimmed current limiting for protection. Quiescent current is typically 5mA with a maximum of 10mA. Ripple rejection measures 75dB at 120Hz. It operates within a junction temperature range of -40°C to +125°C.

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

• Provides a fixed 1.8V output with high accuracy using a trimmed bandgap reference.
• Includes on-chip thermal shutdown to prevent damage during overload or excessive ambient temperatures.
• Features current limiting that ensures controlled short-circuit current behavior.

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

• PC Motherboard
• LCD Monitor
• Graphic Card
• DVD-video Player
• Telecom Equipment

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

Verify the component matches the specific SOT-223-3 package configuration and the 1.8V fixed output variant. Confirm the marking ID EH13A corresponds to the intended revision. Ensure the RoHS compliance status aligns with project requirements, as the datasheet indicates lead-free packaging. Cross-reference the ordering suffix TRE1 for tape and reel specifications.

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

Select this part when a fixed 1.8V rail is required with up to 1A capacity in a compact surface-mount footprint. Consider the 1.25V maximum dropout voltage relative to the minimum input supply voltage. Evaluate thermal dissipation capabilities based on the SOT-223 package thermal resistance if operating near maximum current limits.

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

This component belongs to the AZ1117 series of low dropout three-terminal regulators manufactured by Diodes Incorporated. The series offers various fixed voltage options and an adjustable version across multiple industry-standard packages including SOT89, TO220-3, and TO263. The H suffix specifically denotes the SOT-223 package option within this family.

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

The datasheet explicitly recommends using AZ1117C or AZ1117I variants instead of the standard AZ1117 series for new designs.

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

What is the typical ripple rejection performance?

The ripple rejection is typically 75dB at a frequency of 120Hz with a 22µF tantalum output capacitor.

How does the device handle overtemperature conditions?

On-chip thermal shutdown activates when the junction temperature reaches approximately 150°C, protecting the device from excessive heat.