Diodes Incorporated AZ1086T-5.0E1

Overview

AZ1086T-5.0E1 from BCD Semiconductor Manufacturing Limited is a fixed-output 5.0V, 1.5A low dropout linear regulator in TO-220-3 package, featuring 1.3V typical dropout at full load, on-chip thermal shutdown, and ±1% output voltage accuracy over temperature and load. It delivers stable post-regulation for switching power supplies and powers microprocessor core logic in motherboard and telecom equipment.

For engineers reviewing the AZ1086T-5.0E1 datasheet, AZ1086T-5.0E1 pinout, AZ1086T-5.0E1 application, or AZ1086T-5.0E1 equivalent, this part supports high-current analog and digital rail generation where input-to-output differential is constrained, thermal robustness is required, and fixed 5.0V output simplifies design versus adjustable LDOs.

Technical Context

The AZ1086T-5.0E1 integrates a precision bandgap reference, current-limit circuit (2.3A), and thermal protection with 165°C shutdown threshold and 30°C hysteresis. Its internal architecture uses a PNP pass transistor to achieve low dropout while maintaining stability with ≥10μF output capacitance.

It operates across 0–125°C junction temperature range with 0.1% typical load regulation and 0.015% typical line regulation, enabling use in battery charger feedback paths and noise-sensitive analog subsystems where ripple rejection exceeds 60dB at 120Hz.

Key Specifications

Pinout & Package

Package: TO-220-3 (3-pin, through-hole, vertical mount, tab-connected to output). Thermal resistance θ_JA = 60°C/W, θ_JC = 7.22°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output LDO applications.

Compared with LM2940CT-5.0/NOPB and TLV1117-50CDCYR, AZ1086T-5.0E1 uniquely balances 1.5A output, TO-220 thermal performance, and 1.3V dropout-making it optimal for industrial-grade 5V rail generation where reliability under sustained load is critical.

Availability

AZ1086T-5.0E1 is available at Aetrix Electronics and suitable for motherboard power delivery, telecom equipment power, cable modem subsystems, and industrial embedded control requiring stable component supply and long-term manufacturability.

Supply support for AZ1086T-5.0E1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-reliability linear regulators, MOSFETs, and mixed-signal solutions for industrial and communications markets.

The AZ1086 series was developed for high-current, low-dropout regulation in infrastructure equipment where thermal resilience, output accuracy, and long-lifecycle support are mandatory design requirements.

FAQ

What is the minimum input voltage required for AZ1086T-5.0E1 to maintain regulation?

The minimum input voltage is 6.5V, derived from the 5.0V output plus 1.5V maximum dropout (per datasheet Absolute Maximum Ratings). At 1.5A load, typical dropout is 1.3V, so 6.3V input sustains regulation-but 6.5V ensures margin across temperature and process variation.

Can AZ1086T-5.0E1 be used without an input capacitor?

No. A minimum 10μF tantalum or aluminum electrolytic capacitor is required at the input to prevent oscillation and ensure stability under fast load transients. Ceramic capacitors alone are insufficient due to ESR requirements specified in the datasheet.

Is the TO-220-3 package electrically isolated?

No. In the AZ1086T-5.0E1 TO-220-3 package, the metal tab is internally connected to Pin 2 (VOUT). Electrical isolation requires insulating hardware (e.g., shoulder washer, mica pad) and non-conductive heatsink mounting.

Does AZ1086T-5.0E1 require an external resistor divider for 5.0V output?

No. The "5.0" in the part number indicates a fixed-output version with internal resistor network. Unlike the ADJ variant, no external resistors are needed-only input and output capacitors per the Typical Application schematic on page 12 of the datasheet.