AZ1117T-3.3E1

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

The AZ1117T-3.3E1 is a positive fixed-output linear regulator from the AZ1117 series, manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.3V 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 1.15V at full load. It incorporates a trimmed bandgap reference for high accuracy and includes on-chip thermal shutdown and current limiting protection. The component is housed in a TO220-3 through-hole package and supports an operating junction temperature range from -40°C to +125°C.

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

• Integrated thermal shutdown circuitry protects against excessive junction temperatures caused by overload or ambient heat.
• Trimmed current limit ensures specified output current capability and controlled short-circuit behavior.
• Fixed output versions utilize an internal resistor network to maintain precise voltage regulation without external components.

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 specific part number matches the required package style and output voltage configuration before procurement. Confirm RoHS compliance status as indicated in the ordering information section of the datasheet. Ensure the supplier documentation references the correct manufacturer specifications for the AZ1117 series to avoid counterfeit or obsolete stock issues.

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

Select this component when a robust through-hole solution is required for power management applications. The TO220-3 package offers superior thermal dissipation compared to surface-mount options, making it suitable for higher power densities. Consider the 1A current rating and 15V input limit to ensure compatibility with the system's power supply architecture.

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

This device belongs to the AZ1117 family of low dropout linear regulators produced by Diodes Incorporated. The series is available in multiple packages including SOT223, SOT89, and various TO styles. The AZ1117T variant specifically denotes the TO220-3 through-hole packaging option within this broader product line.

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

The datasheet explicitly states that the original AZ1117 series is not recommended for new designs and advises using the AZ1117C or AZ1117I series instead. These updated variants serve as the direct functional replacements for legacy AZ1117 parts.

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

What is the maximum input voltage allowed for the AZ1117T-3.3E1?

The maximum recommended operating input voltage is 15V, although absolute maximum ratings list 20V.

Does the AZ1117T-3.3E1 require external capacitors for stability?

Yes, typical application circuits recommend input and output capacitors, such as 10µF or 22µF, to ensure stable operation and transient response.