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Diodes Incorporated AZ1084D-2.5TRG1
- Part No.:
- AZ1084D-2.5TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1084D-2.5TRG1.pdf
- Description:
- IC REG LINEAR 2.5V 5A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,704
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Product details
Overview
AZ1084D-2.5TRG1 from Diodes Incorporated is a fixed-output 2.5V, 5A low dropout linear regulator in TO-252-2 (3) package with 1.3V typical dropout at full load, on-chip thermal limiting, and ±1% output voltage accuracy over 0°C to +125°C junction temperature. It delivers stable microprocessor supply rails in embedded systems where post-regulation of switching supplies demands high current and low noise.
For engineers reviewing the AZ1084D-2.5TRG1 datasheet, AZ1084D-2.5TRG1 pinout, AZ1084D-2.5TRG1 application, or AZ1084D-2.5TRG1 equivalent, key selection criteria include dropout voltage at 5A, thermal resistance (θJA = 100°C/W), load regulation (≤15 mV), PSRR (72 dB at 120 Hz), and compatibility with standard TO-252 footprint layouts.
Technical Context
The AZ1084D-2.5TRG1 integrates a trimmed band-gap reference and current-limiting circuit to maintain precise 2.5V output under varying line and load conditions. Its internal thermal shutdown activates when junction temperature exceeds +150°C, protecting against sustained overload or ambient overheating.
Designed for fixed-output operation, it eliminates external feedback resistors-unlike the adjustable AZ1084-ADJ variant-and achieves 0.1% typical load regulation and 0.5 mV typical line regulation across its 4.0–7.0V input range. The device operates without minimum load requirement in most configurations but specifies 3 mA minimum load current at 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±1% (guaranteed over 0–125°C TJ, enabling direct replacement of legacy 2.5V LDOs) |
| Output Current | 5A continuous (supports high-current FPGA core rails or SoC power domains) |
| Dropout Voltage | 1.3V typical at 5A (allows operation from 3.8V input, critical for battery-powered 5V-to-2.5V conversion) |
| Load Regulation | ≤15 mV (0–5A load step, ensures <0.6% output deviation during processor burst loads) |
| PSRR | 72 dB at 120 Hz (suppresses ripple from upstream buck converters feeding this LDO) |
| Thermal Resistance θJA | 100°C/W (TO-252-2 (3), dictates heatsink-free operation up to ~2.5W dissipation at 25°C ambient) |
| Operating Junction Temp | 0°C to +125°C (validated for industrial-grade embedded controllers and RISC processor supplies) |
Pinout & Package
Package: TO-252-2 (3), surface-mount, lead-free, RoHS-compliant, with exposed thermal pad (pin 2 functions as output and thermal tab).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated input supply connection; requires ≥10 µF ceramic input capacitor for stability |
| 2 | OUTPUT | Regulated 2.5V output and thermal pad; must be soldered to large copper pour for thermal performance |
| 3 | ADJ/GND | Ground reference terminal; ties internal band-gap and error amplifier to system ground |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Voltage | 1.3V typical at 5A enables use with narrow input margins (e.g., 3.3V rail post-buck conversion) |
| Integrated Thermal Protection | Automatic shutdown at +150°C junction temperature prevents permanent damage during sustained overload |
| Fixed 2.5V Output | No external resistors required-reduces BOM count and layout area versus adjustable regulators |
| Lead-Free & Green Packaging | TO-252-2 (3) meets RoHS 2 and halogen/antimony-free "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb) |
| High Ripple Rejection | 72 dB PSRR at 120 Hz suppresses switching noise from upstream DC/DC converters |
Applications
| Microprocessor Core Supply | Battery Charger Post-Regulation |
|---|---|
|
Use Scenario: Powering ARM Cortex-A series SoCs requiring clean, stable 2.5V core voltage with fast transient response. IC Role / Device Role / Timing Role: Primary low-noise, high-current linear regulator delivering regulated core power independent of switching supply ripple. Use Value: Maintains <±15 mV output deviation during 0–5A load transients, preventing CPU throttling or reset events. |
Use Scenario: Final-stage regulation after a 5V switching charger IC to deliver precise 2.5V to Li-ion battery management ICs. IC Role / Device Role / Timing Role: Precision voltage clamp ensuring accurate reference for battery cell voltage monitoring circuits. Use Value: ±1% output tolerance guarantees <±25 mV absolute error in battery voltage sensing path. |
| Desktop PC VRM Auxiliary Rail | RISC Processor I/O Supply |
|
Use Scenario: Generating auxiliary 2.5V rail for DDR memory termination or PCIe slot logic in compact desktop motherboards. IC Role / Device Role / Timing Role: Low-dropout post-regulator stabilizing noisy 3.3V motherboard rail for noise-sensitive interface logic. Use Value: 72 dB PSRR attenuates 120 Hz ripple from bulk capacitors, reducing signal integrity risk on high-speed buses. |
Use Scenario: Supplying I/O banks of RISC-V microcontrollers operating in industrial temperature environments (−40°C to +85°C ambient). IC Role / Device Role / Timing Role: Fixed-output LDO providing robust, thermally protected 2.5V to GPIO and peripheral interfaces. Use Value: Guaranteed operation to +125°C junction temperature supports extended life in sealed enclosures without forced air cooling. |
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 |
|---|---|---|---|
| AP2112K-2.5TRG1 | 2.5V, 600mA max, 300mV dropout at 600mA, SOT-23-5 package | Lower current capacity limits use to low-power MCU I/O rails-not suitable for 5A loads | Select only for space-constrained, sub-1A applications where thermal mass is limited |
| TLV1117-25CDCYR | 2.5V, 800mA max, 1.2V dropout at 800mA, SOT-223 package | Lacks integrated thermal shutdown latch; relies on foldback current limiting only | Prefer where cost sensitivity outweighs need for robust thermal protection in ≤800mA designs |
Compared with AP2112K-2.5TRG1 and TLV1117-25CDCYR, AZ1084D-2.5TRG1 uniquely supports 5A continuous output with guaranteed thermal shutdown and TO-252 thermal performance-making it irreplaceable for high-current, safety-critical linear regulation where alternatives require parallel devices or active cooling.
Availability
AZ1084D-2.5TRG1 is available at Aetrix Electronics and suitable for microprocessor core supply, battery charger post-regulation, and RISC processor I/O supply requiring stable component supply across industrial and embedded production cycles.
Supply support for AZ1084D-2.5TRG1 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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AZ1084 series belongs to Diodes' high-current LDO portfolio, engineered specifically for post-regulation in power-dense embedded systems where thermal reliability and precision voltage stability supersede efficiency concerns.
FAQ
Is AZ1084D-2.5TRG1 still in active production?
No-AZ1084D-2.5TRG1 is officially obsolete per Diodes' DS36598 Rev. 4 (November 2021), marked "PART DISCONTINUED" with migration guidance to AZ1084C variants. Aetrix Electronics maintains limited legacy stock for design continuity and last-time buy support, but no new manufacturing commitments exist.
What is the maximum allowable input voltage for AZ1084D-2.5TRG1?
The absolute maximum input voltage is 12V per Absolute Maximum Ratings. However, recommended operation limits input to 7.0V for the 2.5V version to ensure safe power dissipation and thermal margin-exceeding this risks exceeding 100°C/W θJA limits and triggering thermal shutdown under full 5A load.
Can AZ1084D-2.5TRG1 be used without an input capacitor?
No-datasheet Figure 10 specifies a minimum 10 µF ceramic input capacitor (X5R/X7R) placed within 5 mm of pins 1 and 3. Omission causes instability, oscillation, or failure to regulate due to insufficient high-frequency bypassing of input ripple and trace inductance.
How does the ADJ/GND pin function in the fixed-output AZ1084D-2.5TRG1?
In fixed-output versions like AZ1084D-2.5TRG1, pin 3 (ADJ/GND) serves solely as the ground reference for the internal band-gap and error amplifier-it is not adjustable. It must be connected directly to system ground with low-impedance routing; floating or RC-filtering this pin degrades regulation accuracy and transient response.
AZ1084D-2.5TRG1 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):
- 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-252-3
AZ1084D-2.5TRG1 FAQ
1.How can I place an order for AZ1084D-2.5TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084D-2.5TRG1 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 AZ1084D-2.5TRG1 reliable?
The price and inventory of AZ1084D-2.5TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1084D-2.5TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1084D-2.5TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084D-2.5TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084D-2.5TRG1?
AZ1084D-2.5TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084D-2.5TRG1 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 AZ1084D-2.5TRG1?
For technical support, including AZ1084D-2.5TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084D-2.5TRG1 requirements.
6.How does Aetrix verify that AZ1084D-2.5TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1084D-2.5TRG1 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 AZ1084D-2.5TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1084D-2.5TRG1?
All AZ1084D-2.5TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084D-2.5TRG1, 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 AZ1084D-2.5TRG1 part is unused and in its original packaging.
Return procedure for AZ1084D-2.5TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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