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Diodes Incorporated AZ1084S-2.5TRE1
- Part No.:
- AZ1084S-2.5TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
AZ1084S-2.5TRE1.pdf
- Description:
- IC REG LINEAR 2.5V 5A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:1,453
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Product details
Overview
AZ1084S-2.5TRE1 from Diodes Incorporated is a fixed-output 2.5V, 5A low dropout linear regulator in TO-263 (D²PAK) package, featuring 1.3V typical dropout at full load, on-chip thermal limiting, and ±1% output voltage accuracy over 0°C to +125°C. It delivers stable microprocessor supply for embedded systems requiring high-current, low-noise DC regulation with minimal input–output differential.
For engineers reviewing the AZ1084S-2.5TRE1 datasheet, AZ1084S-2.5TRE1 pinout, AZ1084S-2.5TRE1 application, or AZ1084S-2.5TRE1 equivalent, key selection criteria include dropout voltage at 5A, thermal resistance (θJA = 60°C/W), current limit (6.5A), load regulation (±7mV), and compatibility with standard TO-263 PCB footprints and heatsinking.
Technical Context
The AZ1084S-2.5TRE1 implements a trimmed band-gap reference and internal current-limiting circuitry, enabling precise 2.5V output regulation without external feedback components. Its architecture integrates thermal shutdown protection triggered by junction temperature exceeding +150°C, ensuring safe operation under overload or elevated ambient conditions.
Designed for post-regulation after switching supplies, it operates with input voltages up to 12V and maintains line regulation of ±0.5mV across 4.0V–10V input range. The device exhibits 72dB PSRR at 120Hz and RMS output noise of 0.003% of VOUT, supporting noise-sensitive analog and digital loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% (2.475V–2.525V), guaranteed across 10mA–5A load and 0°C–+125°C junction temperature. |
| Dropout Voltage | 1.3V typical at 5A load - enables operation with only 3.8V minimum input for 2.5V output. |
| Output Current | 5A continuous - supports high-power microprocessor cores and FPGA I/O banks without external pass devices. |
| Current Limit | 6.5A minimum - provides robust short-circuit protection while allowing brief inrush during power-up. |
| Thermal Resistance | θJA = 60°C/W (TO-263) - requires ≥2.5cm² copper pour for full 5A operation at +70°C ambient. |
| Load Regulation | ±7mV (0–5A) - ensures <0.3% output deviation under dynamic CPU load transients. |
| PSRR | 72dB at 120Hz - suppresses ripple from upstream buck converters feeding the LDO. |
Pinout & Package
Package: TO-263 (D²PAK), surface-mount, thermally enhanced with exposed tab connected to output (Pin 2). RoHS-compliant, lead-free, green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated input supply connection; must be decoupled with ≥10µF low-ESR capacitor near pin. |
| 2 | OUTPUT | Regulated 2.5V output; tab is electrically connected to this pin and serves as primary thermal path to PCB copper. |
| 3 | ADJ/GND | Ground reference for internal error amplifier; must be connected directly to low-impedance system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 1.3V @ 5A enables use with 3.3V or 5V intermediate rails where headroom is constrained. |
| Integrated Thermal Protection | Automatic shutdown at TJ > +150°C prevents permanent damage during sustained overload or poor heatsinking. |
| Precision Output Accuracy | ±1% over temperature and load eliminates need for post-production trimming in volume applications. |
| High Ripple Rejection | 72dB PSRR at 120Hz reduces switching noise coupling into sensitive analog subsystems. |
| Lead-Free & Green Packaging | RoHS 2 compliant, halogen- and antimony-free compound meets IPC-1752A environmental requirements. |
Applications
| Microprocessor Core Supply | Battery Charger Post-Regulator |
|---|---|
Use Scenario: Powers ARM Cortex-A series SoCs requiring clean 2.5V core voltage with fast transient response. IC Role / Device Role / Timing Role: Primary voltage regulator delivering stable 2.5V at up to 5A with <100µs recovery from 80% load step. Use Value: Maintains CPU stability during burst-mode execution without requiring external compensation or sequencing. | Use Scenario: Final-stage regulation in multi-cell Li-ion charger systems where ±1% accuracy ensures precise cell voltage control. IC Role / Device Role / Timing Role: Low-noise post-regulator following a 3.6V–4.2V switching stage, rejecting switching ripple before battery sensing circuitry. Use Value: Enables accurate battery voltage monitoring with <0.003% RMS noise contribution to ADC reference path. |
| Desktop PC VRM Auxiliary Rail | Industrial PLC I/O Module Supply |
Use Scenario: Supplies 2.5V to DDR memory termination (VTT) or auxiliary logic in compact desktop motherboards. IC Role / Device Role / Timing Role: High-current, low-thermal-resistance LDO replacing discrete MOSFET-based solutions in space-constrained layouts. Use Value: Reduces BOM count and layout area versus discrete designs while maintaining 60°C/W thermal performance with standard D²PAK footprint. | Use Scenario: Powers isolated digital I/O drivers in programmable logic controllers operating in 0°C–+70°C industrial enclosures. IC Role / Device Role / Timing Role: Robust local regulator immune to bus voltage fluctuations and EMI from relay coils or motor drives. Use Value: Delivers 5A continuous with built-in current limit and thermal shutdown, eliminating need for external fault protection circuitry. |
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 |
|---|---|---|---|
| AP1117-2.5V-SG-13 | 1A max output, 1.3V dropout at 1A, SOT-223 package, no integrated thermal shutdown. | Suitable only for sub-1A loads; lacks current limiting and thermal protection required for 5A systems. | Select only for cost-sensitive, low-current applications where board space permits larger heatsink for SOT-223. |
| LT1963AES8-2.5#TRPBF | 1.5A max output, 310mV dropout at 1.5A, SO-8 package, 70dB PSRR, ±2% initial accuracy. | Lower current capability and looser tolerance make it unsuitable as direct replacement for 5A/±1% requirements. | Consider only for noise-critical, lower-current subsystems where SO-8 footprint and higher PSRR outweigh current limitations. |
Compared with AP1117-2.5V-SG-13 and LT1963AES8-2.5#TRPBF, the AZ1084S-2.5TRE1 uniquely combines 5A output, ±1% accuracy, integrated thermal/current protection, and TO-263 thermal performance-making it irreplaceable in high-current embedded power rails where reliability and headroom are critical.
Availability
AZ1084S-2.5TRE1 is available at Aetrix Electronics and suitable for microprocessor supply, battery charger post-regulation, and industrial PLC I/O module design requiring stable component supply and long-term production continuity.
Supply support for AZ1084S-2.5TRE1 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and connectivity applications.
The AZ1084 series belongs to Diodes' high-current LDO portfolio, engineered specifically for post-regulation in power-constrained embedded systems where thermal efficiency, precision, and ruggedness are mandatory.
FAQ
What is the maximum input voltage rating for AZ1084S-2.5TRE1?
The absolute maximum input voltage is 12V, per the Recommended Operating Conditions table. Exceeding this may cause permanent damage. For reliable operation, VIN should remain ≤10V when delivering 5A, as higher input voltage increases power dissipation beyond thermal limits even with adequate heatsinking.
Does AZ1084S-2.5TRE1 require external capacitors, and what values are recommended?
Yes - a minimum 10µF low-ESR input capacitor and 22µF output capacitor are required for stability and transient response. Diodes recommends tantalum or ceramic types with ≤50mΩ ESR. The datasheet shows optimal performance with 10µF input + 22µF output, both placed within 5mm of respective pins.
Is AZ1084S-2.5TRE1 still in active production, or is it obsolete?
The AZ1084 series is marked "OBSOLETE – PART DISCONTINUED" in the official datasheet (Rev. 4-4, Nov 2021), with Diodes recommending migration to the AZ1084C family. However, AZ1084S-2.5TRE1 remains available through authorized distributors and Aetrix Electronics for legacy design support and last-time buys.
Can AZ1084S-2.5TRE1 be paralleled for higher current output?
No - the AZ1084S-2.5TRE1 is not designed for parallel operation. Its internal current-limit circuitry and lack of current-sharing control make paralleling unsafe and unstable. For >5A requirements, use a single higher-current LDO or switch to a DC-DC controller with external MOSFETs.
AZ1084S-2.5TRE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.5V @ 5A
- Current - Output:
- 5A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 72dB (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-263
AZ1084S-2.5TRE1 FAQ
1.How can I place an order for AZ1084S-2.5TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084S-2.5TRE1 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 AZ1084S-2.5TRE1 reliable?
The price and inventory of AZ1084S-2.5TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1084S-2.5TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1084S-2.5TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084S-2.5TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084S-2.5TRE1?
AZ1084S-2.5TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084S-2.5TRE1 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 AZ1084S-2.5TRE1?
For technical support, including AZ1084S-2.5TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084S-2.5TRE1 requirements.
6.How does Aetrix verify that AZ1084S-2.5TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1084S-2.5TRE1 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 AZ1084S-2.5TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1084S-2.5TRE1?
All AZ1084S-2.5TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084S-2.5TRE1, 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 AZ1084S-2.5TRE1 part is unused and in its original packaging.
Return procedure for AZ1084S-2.5TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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