AZ1117R-1.8TRE1

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

The AZ1117R-1.8TRE1 is a fixed-output positive linear regulator from the AZ1117 series, manufactured by Diodes Incorporated. It provides a nominal output voltage of 1.8V with a maximum continuous output current of 1A. The device features a low dropout voltage of 1.15V at full load and supports an input voltage range up to 15V. It operates within a junction temperature range of -40°C to +125°C and includes on-chip thermal shutdown and trimmed current limiting for protection.

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

• Low dropout voltage of 1.15V at 1A output current
• On-chip thermal shutdown protection against excessive junction temperatures
• Trimmed current limit ensuring specified output current and controlled short-circuit current
• Fixed 1.8V output with 1% accuracy ensured by a trimmed bandgap reference

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

• PC Motherboard
• LCD Monitor
• Graphic Card
• DVD-video Player
• NIC/Switch

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

Verify that the component matches the specific SOT-89 package and RoHS-compliant tape & reel packaging indicated by the suffix. Confirm the manufacturer is Diodes Incorporated and check for any 'Not Recommended for New Design' notices associated with this legacy part number in official documentation before finalizing procurement plans.

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

Select this component when a fixed 1.8V supply is required with up to 1A load capability. Ensure the input voltage remains within the 15V maximum rating and consider the 1.15V dropout requirement for headroom calculations. Verify that the SOT-89 package thermal resistance is sufficient for the expected ambient temperature and power dissipation conditions.

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

This part belongs to the AZ1117 series of 1A low dropout linear regulators. The series offers various fixed output voltages and an adjustable version across multiple industry-standard packages including SOT-223, SOT-89, TO-220-3, TO-252, and TO-263. It is designed for general-purpose voltage regulation in consumer and industrial electronics.

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

Official datasheets recommend using AZ1117C or AZ1117I series parts instead of this model.

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

What is the typical ripple rejection performance?

The ripple rejection (PSRR) is typically 75dB at 120Hz with a 22µF tantalum output capacitor.

How is the output voltage accuracy defined?

The circuit includes a trimmed bandgap reference to assure output voltage accuracy within 1% for the 1.8V version.