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Diodes Incorporated AZ1086D-ADJTRE1
- Part No.:
- AZ1086D-ADJTRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1086D-ADJTRE1.pdf
- Description:
- IC REG LIN POS ADJ 1.5A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,655
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Product details
Overview
AZ1086D-ADJTRE1 from BCD Semiconductor Manufacturing Limited is an adjustable 1.5A low-dropout linear regulator with 1.3V typical dropout at full load, integrated thermal shutdown and current limiting, designed for post-regulation in switching power supplies and microprocessor core voltage delivery in motherboard and telecom equipment.
For engineers reviewing the AZ1086D-ADJTRE1 datasheet, AZ1086D-ADJTRE1 pinout, AZ1086D-ADJTRE1 application, or AZ1086D-ADJTRE1 equivalent, this part supports precise output voltage setting via two external resistors, delivers stable regulation under 1.5A load with ≤0.1% load regulation, and operates across 0°C to 125°C junction temperature range in TO-252-2 (1/3/4) packages.
Technical Context
The AZ1086D-ADJTRE1 implements a bandgap-referenced error amplifier driving a PNP pass transistor, enabling low dropout operation while maintaining tight line (0.015% typ) and load (0.1% typ) regulation. Its internal current limit (2.3A) and thermal shutdown (165°C trip, 30°C hysteresis) protect against overload and fault conditions without external components.
As an adjustable LDO, it uses the ADJ pin to sense feedback from a resistor divider, allowing output voltages from 1.225V to 12V (with VIN ≤15V). The 120μA typical adjust pin current and ±0.5% reference voltage stability over temperature ensure predictable setpoint accuracy in precision analog and digital supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous - supports high-current logic and interface ICs without derating at 25°C ambient |
| Dropout Voltage | 1.3V typical at 1.5A - enables operation with only 1.3V headroom above output, critical for battery-powered systems |
| Reference Voltage | 1.225V to 1.270V - sets minimum output voltage floor and defines accuracy of externally adjusted outputs |
| Line Regulation | 0.015% typical - ensures <±0.5mV output shift per 1V input change, vital for noise-sensitive analog circuits |
| Load Regulation | 0.1% typical - guarantees ≤±3.3mV variation from 10mA to 1.5A load, suitable for FPGA core rail stability |
| Thermal Shutdown | 165°C junction trip with 30°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
| Quiescent Current | 5–10mA - balances low-noise performance with standby power efficiency in always-on subsystems |
Pinout & Package
AZ1086D-ADJTRE1 is packaged in TO-252-2 (1), TO-252-2 (3), or TO-252-2 (4) - surface-mount DPAK variants with exposed thermal pad for enhanced heat dissipation. All variants share identical pinout and electrical behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: INPUT | Input voltage supply connection | Accepts 2.7V to 15V DC; must be decoupled with ≥10μF ceramic/tantalum capacitor near pin |
| 2: OUTPUT | Regulated output voltage node | Delivers adjustable output (1.225V–12V); requires ≥22μF output capacitance for stability |
| 3: ADJ/GND | Feedback reference and ground return | Sets output via R1–R2 divider; connects to system ground; carries 60–120μA bias current |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout architecture | 1.3V max at 1.5A enables use with Li-ion (3.0–4.2V) or 5V bus inputs for 3.3V/2.5V rails |
| Integrated protection | Current limit (2.3A) + thermal shutdown (165°C) eliminate need for external foldback or thermal sensors |
| Precision reference | 1.225–1.270V bandgap reference with ±0.5% temp stability ensures ±1% output accuracy over 0–125°C |
| Adjustable output | Two-resistor configuration supports custom voltages (e.g., 1.8V for DDR memory, 1.2V for CPU cores) |
| Ripple rejection | 60–75dB at 120Hz allows clean post-regulation of noisy switcher outputs in telecom and set-top boxes |
Applications
| Microprocessor Core Supply | Battery Charger Management |
|---|---|
Use Scenario: Providing clean, tightly regulated 1.2V or 1.8V to ARM Cortex-A series CPUs in embedded gateways. IC Role / Device Role / Timing Role: Primary core voltage regulator delivering 1.5A peak current with <10mV load transient deviation. Use Value: Maintains CPU stability during burst-mode execution; eliminates need for external sequencing ICs due to built-in soft-start behavior. |
Use Scenario: Generating precise 4.2V charging voltage for single-cell Li-ion batteries in portable medical devices. IC Role / Device Role / Timing Role: Adjustable LDO configured as constant-voltage charger stage following buck converter pre-regulation. Use Value: Achieves ±0.5% output accuracy over temperature, meeting USB PD and Qi-compliant charging tolerances without trimming. |
| Post-Regulation for Switching Supplies | Telecom Line Card Power |
Use Scenario: Filtering ripple from 5V/3.3V DC-DC converters on industrial PLC backplanes. IC Role / Device Role / Timing Role: Final-stage linear regulator suppressing 50–100kHz switching noise before analog sensor interfaces. Use Value: 75dB ripple rejection at 120Hz reduces conducted EMI, eliminating need for additional LC filters in space-constrained modules. |
Use Scenario: Powering DSPs and PHY transceivers on VoIP line cards requiring low-noise 3.3V and 1.5V rails. IC Role / Device Role / Timing Role: Dual-rail LDO solution using parallel AZ1086D-ADJTRE1 (for 1.5V) and AZ1086D-3.3TRE1 (for 3.3V). Use Value: Thermal shutdown and current limit prevent field failures during short-circuit events on Ethernet PHY ports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC29152-ADJ | Higher dropout (0.6V @ 1.5A), lower quiescent current (120μA), no thermal hysteresis | Less robust thermal recovery in sustained overload; requires external thermal pad layout | Prefer when ultra-low IQ dominates over thermal resilience |
| LT1964EDD-ADJ | Lower output current (0.2A), superior PSRR (70dB @ 1MHz), higher cost | Not suitable for >500mA loads; used only in RF/analog signal chains where noise matters most | Choose only for low-noise analog front-ends, not power delivery |
Compared with MIC29152-ADJ and LT1964EDD-ADJ, AZ1086D-ADJTRE1 uniquely balances 1.5A output, 1.3V dropout, and integrated thermal hysteresis-making it optimal for cost-sensitive, thermally demanding embedded power rails where reliability trumps ultra-low IQ or GHz-range noise suppression.
Availability
AZ1086D-ADJTRE1 is available at Aetrix Electronics and suitable for motherboard power supply, telecom line card, and battery charger applications requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for AZ1086D-ADJTRE1 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 IC foundry and fabless designer specializing in high-voltage, high-current power management solutions for industrial and consumer markets.
The AZ1086 series belongs to BCD's low-dropout linear regulator product line, engineered specifically for post-regulation and point-of-load applications in telecom infrastructure, computing, and battery-powered equipment where thermal robustness and load transient response are critical.
FAQ
What is the minimum input-to-output voltage differential required for regulation?
The AZ1086D-ADJTRE1 maintains regulation with a minimum dropout voltage of 1.3V typical at 1.5A load, rising to 1.5V maximum under worst-case conditions (high temperature, low VIN). For reliable operation, maintain ≥1.8V headroom at full load to accommodate tolerance and thermal drift.
Can this device be used in parallel for higher current capability?
No-AZ1086D-ADJTRE1 lacks current-sharing circuitry or master-slave synchronization. Parallel connection risks thermal runaway due to mismatched dropout voltages and reference tolerances. Use a single higher-current LDO or switcher instead.
What output capacitor types and values are recommended?
BCD specifies ≥22μF tantalum or low-ESR aluminum electrolytic capacitors at the output. Ceramic capacitors ≥10μF may be used if ESR is ≥30mΩ; otherwise, add a 1–2Ω damping resistor in series to ensure loop stability per Figure 12 in the datasheet.
Is the ADJ pin internally connected to GND in fixed-output versions?
No-the ADJ pin is unconnected (NC) in fixed-output variants like AZ1086D-3.3TRE1. In AZ1086D-ADJTRE1, ADJ is an active feedback node requiring external resistor divider; leaving it floating causes undefined output voltage and potential instability.
AZ1086D-ADJTRE1 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 13.5V
- 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-ADJTRE1 FAQ
1.How can I place an order for AZ1086D-ADJTRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1086D-ADJTRE1 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-ADJTRE1 reliable?
The price and inventory of AZ1086D-ADJTRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1086D-ADJTRE1 is usually 5 days.
3.What payment methods are accepted for AZ1086D-ADJTRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1086D-ADJTRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1086D-ADJTRE1?
AZ1086D-ADJTRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1086D-ADJTRE1 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-ADJTRE1?
For technical support, including AZ1086D-ADJTRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1086D-ADJTRE1 requirements.
6.How does Aetrix verify that AZ1086D-ADJTRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1086D-ADJTRE1 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-ADJTRE1 meets industry standards.
7.What is the process for return or replacement of AZ1086D-ADJTRE1?
All AZ1086D-ADJTRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1086D-ADJTRE1, 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-ADJTRE1 part is unused and in its original packaging.
Return procedure for AZ1086D-ADJTRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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