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Diodes Incorporated AZ1084CS-2.5TRE1
- Part No.:
- AZ1084CS-2.5TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
AZ1084CS-2.5TRE1.pdf
- Description:
- IC REG LINEAR 2.5V 5A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:4,551
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Product details
Overview
AZ1084CS-2.5TRE1 from Diodes Incorporated is a fixed-output 2.5V, 5A low-dropout linear regulator in TO252-2 (3) package with 1.35V typical dropout at full load, on-chip thermal limiting, and ±1% output voltage accuracy over 0°C to +125°C junction temperature. It supports post-regulation for switching supplies and microprocessor core power in desktop PCs and embedded systems.
For engineers reviewing the AZ1084CS-2.5TRE1 datasheet, AZ1084CS-2.5TRE1 pinout, AZ1084CS-2.5TRE1 application, or AZ1084CS-2.5TRE1 equivalent, key selection criteria include dropout voltage at 5A, thermal shutdown behavior, compatibility with low-ESR ceramic capacitors, and fixed 2.5V output tolerance under varying load and line conditions.
Technical Context
The AZ1084CS-2.5TRE1 uses a trimmed bandgap reference and internal current-limiting circuit to maintain stable 2.5V output across 10mA–5A load range. Its dropout voltage remains ≤1.5V up to 5A, enabling operation with minimal input–output differential.
Thermal protection activates when junction temperature exceeds +150°C, and the device operates within 0°C to +125°C junction range. It requires no external components for fixed-output configuration and supports ceramic output capacitors ≥10µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±1% (2.475V–2.525V) at 10mA–5A load, ensuring stable core supply for 2.5V logic and processors |
| Dropout Voltage | 1.35V typical at 4.5A; max 1.5V at 5A - enables use with 4.0V–7.0V input rails |
| Output Current | 5A continuous - sufficient for high-current FPGA I/O banks or ASIC core domains |
| Current Limit | 6.5A typical - provides short-circuit protection without latch-up |
| Line Regulation | 0.5mV typical (6mV max) over 4.0V–10V input - minimizes output drift during input ripple |
| Load Regulation | 3mV typical (15mV max) from 0–5A - maintains tight voltage control across dynamic CPU loads |
| Thermal Resistance θJA | 100°C/W - requires adequate PCB copper area for thermal management at full load |
| Junction Temp Range | 0°C to +125°C - validated for industrial and embedded processor supply applications |
Pinout & Package
Package: TO252-2 (3), surface-mount, thermally enhanced DPAK variant with exposed drain pad (pin 2) for heatsinking. Dimensions: 6.5mm × 10.4mm × 2.38mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated input supply (4.0V–7.0V); connects to upstream DC/DC or bulk capacitor |
| 2 | OUTPUT | Regulated 2.5V output; electrically and thermally connected to exposed metal tab for PCB heat dissipation |
| 3 | GND | Ground reference for internal bandgap and error amplifier; must be low-impedance path to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR capacitor support | Stable with ≥10µF ceramic output capacitor - eliminates need for bulky tantalum or electrolytic types |
| Integrated thermal limiting | Automatic shutdown above +150°C junction temperature - prevents permanent damage during overload or poor heatsinking |
| Trimmed bandgap reference | 1.225V–1.270V reference voltage - enables ±1% output accuracy without external trimming |
| Lead-free & RoHS compliant | Fully EU RoHS 3 (2015/863/EU) compliant with <900ppm Br+Cl and <1000ppm Sb - suitable for green industrial designs |
| High PSRR | 72dB at 120Hz - suppresses ripple from upstream switching converters feeding the LDO input |
Applications
| Desktop PC Microprocessor Core Supply | Battery Charger Post-Regulation |
|---|---|
|
Use Scenario: Providing clean 2.5V bias to CPU I/O buffers and memory interface circuits in x86-based desktop motherboards. IC Role / Device Role / Timing Role: Final-stage linear regulator delivering low-noise, tightly regulated voltage after primary buck conversion. Use Value: Maintains 2.5V ±1% under 0–5A transient load steps, preventing signal integrity loss in high-speed DDR interfaces. |
Use Scenario: Regulating output of a 3.3V/5V switching charger IC to deliver precise 2.5V for Li-ion battery fuel gauge or charging controller ICs. IC Role / Device Role / Timing Role: Precision post-regulator ensuring accurate reference voltage for ADC-based battery voltage monitoring. Use Value: 0.1% load regulation and 0.015% line regulation preserve measurement accuracy across battery charge cycles. |
| Industrial Embedded Controller Power | RISC Processor Domain Supply |
|
Use Scenario: Powering ARM Cortex-M7/M4-based PLC controllers operating in ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: Primary 2.5V domain regulator for MCU core, peripherals, and analog subsystems. Use Value: Thermal shutdown at +150°C and 0°C to +125°C operating range ensure reliability in uncooled enclosures. |
Use Scenario: Supplying 2.5V to RISC-V SoC I/O banks requiring stable voltage during burst-mode processing. IC Role / Device Role / Timing Role: Low-noise, fast-transient-response LDO decoupling critical digital supply domains. Use Value: 100mV output deviation during 2.5A/100µs load step enables timing margin preservation in high-frequency data paths. |
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 output, SOT-23-5 package, 350mV dropout at 600mA | Lower current capacity; unsuitable for >1A loads | Select only for space-constrained, sub-1A applications where thermal budget permits smaller package |
| TPS7A4701RGWR | 2.5V/1A, WQFN-20 package, 307µV RMS noise, ±0.5% accuracy | Higher precision and lower noise but limited to 1A; requires external compensation | Prefer for ultra-low-noise analog subsystems where 5A capability is unnecessary |
Compared with AP2112K-2.5TRG1 and TPS7A4701RGWR, the AZ1084CS-2.5TRE1 uniquely delivers 5A output in a thermally robust TO252-2 (3) package with integrated thermal protection-making it the only viable choice for high-current, industrial-grade 2.5V linear regulation where board-level heatsinking is feasible.
Availability
AZ1084CS-2.5TRE1 is available at Aetrix Electronics and suitable for desktop PC power delivery, industrial embedded controller design, and RISC processor domain regulation requiring stable component supply and long-term manufacturability.
Supply support for AZ1084CS-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 manufacturer specializing in discrete, analog, and mixed-signal solutions, with emphasis on power management, signal integrity, and protection devices.
The AZ1084C series belongs to Diodes' high-current LDO portfolio, engineered specifically for post-regulation in computing, industrial, and battery-powered systems demanding robust thermal performance and ±1% output accuracy.
FAQ
What is the minimum input voltage required for stable 2.5V output at 5A?
The AZ1084CS-2.5TRE1 requires a minimum input voltage of 4.0V to maintain regulation at 5A, based on its 1.5V maximum dropout specification. At typical 1.35V dropout, 3.85V input sustains 2.5V output - however, 4.0V is the recommended minimum per datasheet operating conditions to ensure margin across temperature and process variation.
Can this regulator operate with a 10µF ceramic output capacitor?
Yes. The AZ1084CS-2.5TRE1 is explicitly characterized for stability with ≥10µF ceramic capacitors, including the 10µF/22µF combinations shown in the Typical Applications Circuit. No ESR requirements or damping resistors are needed, unlike older LDO architectures.
Does the GND pin require a dedicated thermal pad connection on the PCB?
No. Pin 3 (GND) is the signal ground reference only. Thermal dissipation occurs through the exposed metal tab connected to pin 2 (OUTPUT). The PCB layout must provide a large copper pour tied to pin 2 for effective heat transfer; GND should connect to the system ground plane via standard trace routing.
Is AZ1084CS-2.5TRE1 qualified for automotive applications?
No. This part is rated for 0°C to +125°C junction temperature and is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AZ1084CD-2.5TRG1 with PPAP support) - but AZ1084CS-2.5TRE1 is intended for industrial and commercial applications only.
AZ1084CS-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 @ 4.5A
- 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
AZ1084CS-2.5TRE1 FAQ
1.How can I place an order for AZ1084CS-2.5TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084CS-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 AZ1084CS-2.5TRE1 reliable?
The price and inventory of AZ1084CS-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 AZ1084CS-2.5TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1084CS-2.5TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084CS-2.5TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084CS-2.5TRE1?
AZ1084CS-2.5TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084CS-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 AZ1084CS-2.5TRE1?
For technical support, including AZ1084CS-2.5TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084CS-2.5TRE1 requirements.
6.How does Aetrix verify that AZ1084CS-2.5TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1084CS-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 AZ1084CS-2.5TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1084CS-2.5TRE1?
All AZ1084CS-2.5TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084CS-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 AZ1084CS-2.5TRE1 part is unused and in its original packaging.
Return procedure for AZ1084CS-2.5TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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