AZ1085CS-1.8TRE1

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

The AZ1085CS-1.8TRE1 is a discontinued low dropout positive linear regulator manufactured by Diodes Incorporated, delivering a fixed 1.8V output at up to 3A load current. It features a maximum dropout voltage of 1.5V at full load and operates with an input voltage range up to 12V. The device includes integrated thermal shutdown and current limiting protection circuits. It is housed in a TO-263 surface-mount package and supports operation within a junction temperature range of 0°C to +125°C.

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

• Integrated on-chip thermal shutdown and current limiting circuitry for robust protection
• Compatible with low ESR ceramic capacitors for stable operation
• Fixed internal adjust resistors eliminate external component requirements
• Fully lead-free and RoHS compliant construction

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

• Post regulation for switching supplies
• Microprocessor power supply rails
• Motherboard power distribution networks
• Battery charger systems
• Telecom equipment power management

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

This specific part number is officially obsolete and discontinued by the manufacturer. Verify end-of-life status through official Diodes Incorporated channels before design finalization. Confirm availability of alternative packages or updated series components that maintain equivalent electrical specifications and pinout compatibility for existing hardware designs.

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

Select this component only if legacy system compatibility requires the exact AZ1085C series characteristics. Evaluate thermal resistance parameters against PCB copper area constraints to ensure junction temperatures remain within safe operating limits during continuous 3A operation. Consider line and load regulation tolerances relative to downstream circuit sensitivity requirements.

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

The AZ1085C series represents a family of high-current LDO regulators designed for applications requiring efficient linear regulation from higher voltage sources. This specific variant belongs to the fixed-output subset, distinguishing it from adjustable versions that utilize external resistor networks. The series utilizes BJT technology to achieve high current handling capabilities within standard industrial temperature ranges.

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

Official documentation indicates the AZ1084C series as a functional substitute. Verify pinout alignment and electrical parameter equivalence between the AZ1085C and AZ1084C families before implementing any cross-series replacement strategies.

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

What is the typical dropout voltage for this regulator at full load?

The typical dropout voltage is 1.3V when operating at a 3A load current.

Does this device require external feedback resistors?

No, the fixed output version integrates the necessary adjust resistors internally.

What protection mechanisms are included on the chip?

The device includes on-chip thermal shutdown and current limiting circuits to protect against overload conditions.