AZ1117CR-3.3TRG1

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

The AZ1117CR-3.3TRG1 is a fixed-output low dropout linear regulator manufactured by Diodes Incorporated, designed for applications requiring stable voltage regulation under critical transient and minimum input voltage conditions. It provides a nominal output voltage of 3.3V with a maximum output current capability of 800mA. The device features a maximum quiescent current of 6mA and an output voltage accuracy within ±1%. It incorporates on-chip thermal shutdown and current limit protection to ensure reliability during high load or elevated temperature scenarios.

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

• Integrated trimmed bandgap reference ensures precise output voltage regulation
• Built-in thermal shutdown protects against excessive junction temperatures
• Current limiting function safeguards the device during overload conditions
• Compatible with low ESR ceramic capacitors for stable operation

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

• USB devices
• Add-on cards
• DVD players
• PC motherboards

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

Verify that the received component matches the specific SOT89 package configuration associated with the CR suffix. Confirm the marking code G28N corresponds to the 3.3V fixed output variant. Ensure compliance with RoHS 3 standards and check for moisture sensitivity level 3 handling requirements during assembly.

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

Select this regulator when a fixed 3.3V supply is required with moderate current demands up to 800mA. It is suitable for designs where minimizing external components is preferred due to integrated adjust resistors. Consider the thermal resistance characteristics of the SOT89 package for power dissipation calculations in enclosed environments.

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

This part belongs to the AZ1117C series of low dropout linear regulators from Diodes Incorporated. The series includes various fixed voltage options and an adjustable version, available in multiple industry-standard packages including TO252-2, SOT223, and SOT89. The CR designation specifically identifies the SOT89 surface-mount package variant.

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

AZ1117CR-ADJTRG1 (Adjustable version in same package)

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

What is the typical ripple rejection performance at 120Hz?

The PSRR is typically 70dB at 120Hz with an output current of 300mA.

Is the AZ1117CR-3.3TRG1 compatible with ceramic output capacitors?

Yes, the device is optimized for use with low ESR ceramic capacitors, provided the ESR is less than 20Ω.