Diodes Incorporated AZ1086S-5.0TRE1

Overview

AZ1086S-5.0TRE1 from BCD Semiconductor Manufacturing Limited is a fixed-output 5.0V, 1.5A low dropout linear regulator in TO-263-3 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 supplies and powers microprocessor core logic in embedded motherboards.

For engineers reviewing the AZ1086S-5.0TRE1 datasheet, AZ1086S-5.0TRE1 pinout, AZ1086S-5.0TRE1 application, or AZ1086S-5.0TRE1 equivalent, this device is selected for high-current LDO requirements where thermal protection, tight load regulation (±0.4%), and low quiescent current (5–10mA) are critical in space-constrained industrial and telecom power rails.

Technical Context

The AZ1086S-5.0TRE1 integrates a precision bandgap reference (1.225–1.270V), current-limit circuit (2.3A typical), and thermal shutdown (165°C trip with 30°C hysteresis). Its 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 input voltage up to 15V, supports fixed 5.0V output without external resistors, and exhibits 60–75dB ripple rejection at 120Hz - enabling clean DC supply generation downstream of noisy switchers.

Key Specifications

Pinout & Package

TO-263-3 (D²PAK) thermally enhanced surface-mount package with exposed tab for heatsinking; pin 1 = INPUT, pin 2 = OUTPUT, pin 3 = GND (fixed-output configuration).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LD1086S50TR and TLV1117-50CDCYR, AZ1086S-5.0TRE1 offers superior output accuracy (±1% vs. ±2%), higher current capacity (1.5A vs. 0.8–1.5A), and TO-263 package thermal resistance (60°C/W vs. 120°C/W in SOT-223), making it optimal for thermally demanding 5V power domains.

Availability

AZ1086S-5.0TRE1 is available at Aetrix Electronics and suitable for motherboard power distribution, telecom line card bias, and cable modem power rail applications requiring stable component supply, RoHS-compliant packaging, and tape-and-reel delivery for automated assembly.

Supply support for AZ1086S-5.0TRE1 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-performance, cost-effective linear regulators, MOSFETs, and mixed-signal solutions for industrial and communications markets.

AZ1086S-5.0TRE1 belongs to the AZ1086 series of low-dropout linear regulators engineered specifically for post-regulation in multi-rail power systems where thermal robustness, current capability, and output precision are essential.

FAQ

What is the minimum input voltage required for AZ1086S-5.0TRE1 to maintain regulation at 1.5A?

The minimum input voltage is 6.3V, calculated from the 5.0V output plus 1.3V typical dropout voltage. Absolute maximum input is 15V per datasheet; operation below 6.3V causes dropout and unregulated output. Input must remain ≥6.5V under worst-case conditions including temperature drift and tolerance stack-up.

Can AZ1086S-5.0TRE1 be used with ceramic output capacitors?

Yes - the AZ1086S-5.0TRE1 is stable with ≥22μF X5R or X7R ceramic capacitors and does not require minimum ESR. This eliminates tantalum or aluminum electrolytic dependencies, reducing size, cost, and failure risk in long-life applications like telecom infrastructure.

How does the thermal shutdown behavior affect system reliability?

Thermal shutdown activates at 165°C junction temperature with 30°C hysteresis, forcing output disable until die cools to ~135°C. This prevents permanent damage during sustained overload or poor heatsinking. Recovery is automatic and non-latching, supporting graceful degradation rather than catastrophic failure.

Is AZ1086S-5.0TRE1 pin-compatible with other AZ1086 variants?

Yes - all AZ1086 fixed-output versions (1.5V–5.0V) share identical TO-263-3 pinout (INPUT–OUTPUT–GND). Swapping between voltages requires only PCB-level changes to input/output filtering; no layout redesign is needed, simplifying voltage-scaling across product families.