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Diodes Incorporated AZ1086D-3.3TRE1
- Part No.:
- AZ1086D-3.3TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1086D-3.3TRE1.pdf
- Description:
- IC REG LINEAR 3.3V 1.5A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:2,809
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Product details
Overview
AZ1086D-3.3TRE1 from BCD Semiconductor Manufacturing Limited is a fixed-output 3.3V, 1.5A low dropout linear regulator in TO-252-2 (1) package with 1.3V typical dropout at full load, integrated thermal shutdown and current limiting, and ±1% output voltage accuracy over temperature and load - deployed in motherboard power supplies and telecom equipment where stable post-regulation is required.
For engineers reviewing the AZ1086D-3.3TRE1 datasheet, AZ1086D-3.3TRE1 pinout, AZ1086D-3.3TRE1 application, or AZ1086D-3.3TRE1 equivalent, this page delivers verified electrical specs, validated package mapping to TO-252-2 (1), confirmed thermal protection behavior, and real-world use cases for high-current LDO selection in industrial and communications systems.
Technical Context
The AZ1086D-3.3TRE1 implements a bandgap-referenced error amplifier driving a PNP pass transistor, enabling low dropout operation with minimal headroom. Its internal current limit circuit triggers at 2.3A and thermal shutdown activates at 165°C junction temperature with 30°C hysteresis.
It operates across 0–125°C junction temperature range with input voltage up to 15V and requires only 10μF input and 22μF output capacitance for stability. Load regulation is 7mV max over 10mA–1.5A, and line regulation is 1mV max across 4.75–10V input for the 3.3V variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±1% (3.235–3.365V) at 10mA–1.5A load and 4.75–10V input - ensures compatibility with 3.3V logic rails under worst-case thermal and line conditions. |
| Dropout Voltage | 1.3V typical at 1.5A (max 1.5V) - enables operation from 4.6V input while sustaining full-rated output current. |
| Output Current | 1.5A continuous - supports high-current digital subsystems such as microprocessor core supplies and FPGA I/O banks. |
| Thermal Shutdown | 165°C activation with 30°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Line Regulation | 1mV max over 4.75–10V input - minimizes output variation when upstream switching supply ripple or sag occurs. |
| Load Regulation | 7mV max over 10mA–1.5A load - maintains tight voltage control across dynamic current demands in modem or set-top box applications. |
| Quiescent Current | 5–10mA - balances low-noise performance with standby power efficiency in always-on telecom modules. |
Pinout & Package
AZ1086D-3.3TRE1 is packaged in TO-252-2 (1), a surface-mount DPAK variant with exposed thermal pad, rated for 100°C/W junction-to-ambient thermal resistance and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Input voltage supply connection | Accepts 4.75–15V DC; must be decoupled with ≥10μF tantalum or ceramic capacitor close to pin. |
| 2 (OUTPUT) | Regulated 3.3V output node | Delivers up to 1.5A; requires ≥22μF output capacitance for stability and transient response. |
| 3 (GND) | Ground reference and thermal path | Connected to PCB ground plane and thermal pad; critical for thermal performance and noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout operation | 1.3V typical at 1.5A enables use with minimal input–output differential, reducing power loss and heat generation. |
| Integrated protection | Current limit (2.3A) and thermal shutdown (165°C) eliminate need for external fault management circuitry. |
| Fixed 3.3V output | No external resistors required - simplifies layout, improves accuracy vs. adjustable variants, and reduces BOM count. |
| High PSRR | 60–75dB ripple rejection at 120Hz - suppresses switching noise from upstream DC/DC converters in hybrid power architectures. |
| RMS output noise | 0.003% of VOUT (≈100μV RMS) - suitable for noise-sensitive analog sections and ADC reference domains. |
Applications
| Microprocessor Core Supply | Motherboard Power Delivery |
|---|---|
Use Scenario: Providing clean 3.3V rail to ARM Cortex-A series SoCs in embedded computing platforms. IC Role / Device Role / Timing Role: Primary post-regulator after buck converter, delivering low-noise, tightly regulated voltage to CPU I/O and memory interfaces. Use Value: Maintains 3.3V ±1% under 0–1.5A dynamic load steps, preventing logic errors and ensuring reliable boot and runtime operation. |
Use Scenario: Powering PCIe slot auxiliary rails and chipset management controllers on ATX motherboards. IC Role / Device Role / Timing Role: Fixed-voltage LDO supplying stable 3.3V to SMBus controllers and fan PWM drivers. Use Value: Delivers 1.5A with 7mV load regulation, eliminating need for additional filtering stages in space-constrained board layouts. |
| Telecom Line Card | Cable Modem Power Subsystem |
Use Scenario: Generating 3.3V for Ethernet PHYs and packet processors in carrier-grade access equipment. IC Role / Device Role / Timing Role: Secondary regulator isolating sensitive data-path ICs from noisy backplane power. Use Value: 75dB PSRR at 120Hz rejects switcher ripple from shared 5V/12V rails, preserving signal integrity in 1Gbps links. |
Use Scenario: Supplying 3.3V to DOCSIS 3.1 QAM modulators and upstream burst receivers in residential cable gateways. IC Role / Device Role / Timing Role: Low-noise local regulator for RF front-end biasing and analog-to-digital conversion stages. Use Value: 0.003% RMS noise ensures <65dB SNR in 12-bit ADCs used for upstream channel monitoring and diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC29302WU-3.3 | 3A output rating, higher quiescent current (35mA), TO-263-3 package | Better suited for higher-current loads but dissipates more idle power and requires larger PCB area | Select when >1.5A peak current is needed and thermal margin allows higher IQ penalty |
| TLV1117-33CDCY | 800mA output, SOT-223 package, lower dropout (1.2V typ), no thermal hysteresis | Limited to lower-power applications; lacks thermal recovery margin in sustained overload | Select for cost-sensitive, space-constrained designs with ≤800mA load and moderate ambient temperature |
Compared with MIC29302WU-3.3 and TLV1117-33CDCY, AZ1086D-3.3TRE1 uniquely balances 1.5A capability, 1.3V dropout, and integrated thermal hysteresis in a compact TO-252-2 (1) footprint - making it optimal for telecom and embedded systems requiring robust, medium-current regulation without excessive board area or quiescent loss.
Availability
AZ1086D-3.3TRE1 is available at Aetrix Electronics and suitable for motherboard power delivery, telecom line cards, and cable modem subsystems requiring stable component supply with RoHS-compliant, lead-free packaging and tape-and-reel logistics support.
Supply support for AZ1086D-3.3TRE1 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, cost-optimized regulators, MOSFETs, and mixed-signal products for industrial and communications markets.
The AZ1086 series was developed to deliver high-current, low-dropout regulation in standard surface-mount packages for post-regulation in telecom infrastructure, consumer broadband, and embedded computing - emphasizing thermal robustness and ease of integration.
FAQ
What is the minimum input voltage required for AZ1086D-3.3TRE1 to maintain regulation at 1.5A?
The minimum input voltage is 4.6V, calculated as VOUT + VDROP(max) = 3.3V + 1.5V. At 1.3V typical dropout, 4.6V ensures full 1.5A output with margin; operation below this causes foldback current limiting. Input must also exceed 4.75V per datasheet's recommended operating condition.
Can AZ1086D-3.3TRE1 be used without an output capacitor?
No. The device requires ≥22μF output capacitance (tantalum or low-ESR ceramic) for loop stability and transient response. Omitting it risks oscillation, overshoot, or thermal shutdown during load steps. The datasheet specifies this as mandatory for all operating conditions.
How does the thermal shutdown hysteresis affect system recovery?
After triggering at 165°C, the device remains off until junction temperature falls to ~135°C (165°C – 30°C hysteresis). This prevents rapid cycling during overload and allows passive cooling before resuming regulation - critical for reliability in sealed telecom enclosures.
Is AZ1086D-3.3TRE1 compatible with lead-free reflow soldering processes?
Yes. The "E1" suffix denotes RoHS-compliant, lead-free termination, qualified for standard Pb-free reflow profiles with peak temperature up to 260°C (10-second duration). The TO-252-2 (1) package's thermal mass and pad layout support uniform heating and void-free solder joints.
AZ1086D-3.3TRE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.5V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
AZ1086D-3.3TRE1 FAQ
1.How can I place an order for AZ1086D-3.3TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1086D-3.3TRE1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AZ1086D-3.3TRE1 reliable?
The price and inventory of AZ1086D-3.3TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1086D-3.3TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1086D-3.3TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1086D-3.3TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1086D-3.3TRE1?
AZ1086D-3.3TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1086D-3.3TRE1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AZ1086D-3.3TRE1?
For technical support, including AZ1086D-3.3TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1086D-3.3TRE1 requirements.
6.How does Aetrix verify that AZ1086D-3.3TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1086D-3.3TRE1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AZ1086D-3.3TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1086D-3.3TRE1?
All AZ1086D-3.3TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1086D-3.3TRE1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AZ1086D-3.3TRE1 part is unused and in its original packaging.
Return procedure for AZ1086D-3.3TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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