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Diodes Incorporated AZ1084D-2.5TRE1
- Part No.:
- AZ1084D-2.5TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1084D-2.5TRE1.pdf
- Description:
- IC REG LINEAR 2.5V 5A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:3,004
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Product details
Overview
AZ1084D-2.5TRE1 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 core supply in embedded systems where input-to-output differential is constrained.
For engineers reviewing the AZ1084D-2.5TRE1 datasheet, AZ1084D-2.5TRE1 pinout, AZ1084D-2.5TRE1 application, or AZ1084D-2.5TRE1 equivalent, key selection criteria include dropout voltage at 5A, thermal resistance (θJA = 100°C/W), load regulation (±15mV), and compatibility with standard PCB pad layouts for TO-252-2 (3).
Technical Context
The AZ1084D-2.5TRE1 implements a trimmed band-gap reference with internal resistor divider for fixed 2.5V output, eliminating external feedback components. Its current-limiting circuit triggers at 6.5A and integrates thermal shutdown that activates above +150°C junction temperature.
It operates across 4.0V to 7.0V input range with line regulation of ±0.5mV and load regulation of ±15mV under full 5A load. The device supports high PSRR (72dB at 120Hz) and exhibits 0.003% RMS output noise (10Hz–10kHz), critical for noise-sensitive analog and digital loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±1% (guaranteed over 0–125°C, 10mA–5A load) |
| Dropout Voltage | 1.3V typical at 5A (enables operation with only 3.8V input for 2.5V output) |
| Output Current | 5A continuous (supports high-current FPGA or SoC core rails) |
| Current Limit | 6.5A (protects against short-circuit while allowing brief inrush) |
| Thermal Resistance θJA | 100°C/W (TO-252-2 (3); requires moderate copper area for thermal management) |
| Load Regulation | ±15mV (0–5A load step; ensures stable voltage under dynamic CPU load changes) |
| PSRR | 72dB at 120Hz (suppresses ripple from upstream switching converters) |
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 (4.0–7.0V); connects to bulk capacitor and upstream source |
| 2 | OUTPUT / TAB | Regulated 2.5V output and primary thermal path; must be soldered to ≥2 cm² copper pour |
| 3 | ADJ/GND | Ground reference terminal; ties to system ground plane and output capacitor negative |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 1.3V typical @ 5A enables use with 3.3V or 5V intermediate rails |
| Integrated thermal protection | Shuts down at +150°C junction and auto-recovers when cooled below +135°C |
| Fixed 2.5V output | Eliminates external resistors-reduces BOM count and layout area vs. adjustable versions |
| High PSRR | 72dB at 120Hz suppresses switching noise from DC/DC converters feeding its input |
| Lead-free & green packaging | TO-252-2 (3) meets RoHS 2 and halogen/antimony-free "Green" requirements (≤900ppm Br+Cl) |
Applications
| Microprocessor Core Supply | Battery Charger Post-Regulation |
|---|---|
Use Scenario: Powering ARM Cortex-A series SoCs requiring clean, tightly regulated 2.5V core voltage with fast transient response. IC Role / Device Role / Timing Role: Primary LDO delivering stable core rail; handles load steps up to 5A with <100mV droop. Use Value: Maintains 2.5V ±15mV under full 5A load variation, preventing CPU throttling or reset during burst activity. |
Use Scenario: Final-stage regulation after a buck charger IC to eliminate residual switching ripple before battery cell input. IC Role / Device Role / Timing Role: Low-noise post-regulator ensuring <0.003% RMS output noise into Li-ion charging control circuitry. Use Value: Prevents false battery voltage sensing errors caused by switching artifacts, improving charge termination accuracy. |
| Industrial PLC I/O Module | Network Switch PHY Power |
Use Scenario: Providing isolated 2.5V logic supply for digital I/O drivers in harsh industrial environments. IC Role / Device Role / Timing Role: High-current LDO with thermal shutdown protecting against ambient overheating in enclosed enclosures. Use Value: Sustains 5A output at +70°C ambient without derating, enabling compact fanless designs. |
Use Scenario: Powering Gigabit Ethernet PHY transceivers requiring ultra-low-noise 2.5V supply for signal integrity. IC Role / Device Role / Timing Role: Low-ripple LDO with 72dB PSRR filtering noise from shared 3.3V system rail. Use Value: Reduces PHY bit error rate (BER) by suppressing 120Hz ripple and broadband switching noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2112K-2.5TRG1 | 2.5V fixed, 600mA max, SOT-23-5, 350mV dropout @ 600mA | Lower current capacity; unsuitable for >1A loads | Select only for space-constrained, sub-1A applications where thermal mass is limited. |
| TLV1117-25CDCYR | 2.5V fixed, 800mA max, SOT-223, 1.2V dropout @ 800mA | Lower thermal performance (θJA ≈ 60°C/W unmounted), no integrated current limit | Use where cost sensitivity outweighs need for 5A capability and robust fault protection. |
Compared with AP2112K-2.5TRG1 and TLV1117-25CDCYR, the AZ1084D-2.5TRE1 uniquely supports 5A continuous output with integrated 6.5A current limit and thermal shutdown-making it the only viable option among the three for high-current microprocessor or FPGA core supplies.
Availability
AZ1084D-2.5TRE1 is available at Aetrix Electronics and suitable for microprocessor core supply, battery charger post-regulation, industrial PLC I/O modules, and network switch PHY power requiring stable component supply and long-term design-in support.
Supply support for AZ1084D-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 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, designed specifically for post-regulation of switching supplies and core voltage delivery in resource-constrained embedded systems demanding reliability and thermal robustness.
FAQ
What is the minimum input voltage required for AZ1084D-2.5TRE1 to maintain regulation?
The minimum input voltage is 3.8V: calculated as VOUT + VDROP(max) = 2.5V + 1.5V = 4.0V, but datasheet specifies 4.0V ≤ VIN ≤ 7.0V for guaranteed 2.5V output across temperature and load. At 25°C and light load, regulation may hold down to ~3.8V, but design margin requires adherence to the 4.0V minimum.
Can AZ1084D-2.5TRE1 be used in parallel for higher current?
No-AZ1084D-2.5TRE1 lacks current-sharing capability or master-slave synchronization. Parallel connection risks thermal runaway due to mismatched dropout voltages and load distribution. For >5A, select a single higher-current regulator or redesign with multiphase switching architecture.
Is thermal pad (pin 2) electrically isolated in TO-252-2 (3) package?
No-the thermal pad (pin 2) is internally connected to the OUTPUT terminal. It must be soldered to a grounded or output-referenced copper pour. Electrical isolation is not provided; using it as a separate ground node will cause short-circuit failure.
Does AZ1084D-2.5TRE1 require an input capacitor?
Yes-a minimum 10µF ceramic or tantalum input capacitor is required per datasheet to prevent oscillation and ensure stability. Placement within 5mm of pins 1 and 3 is mandatory; insufficient capacitance or poor layout causes startup overshoot and potential damage during hot-swap events.
AZ1084D-2.5TRE1 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-2.5TRE1 FAQ
1.How can I place an order for AZ1084D-2.5TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084D-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 AZ1084D-2.5TRE1 reliable?
The price and inventory of AZ1084D-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 AZ1084D-2.5TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1084D-2.5TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084D-2.5TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084D-2.5TRE1?
AZ1084D-2.5TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084D-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 AZ1084D-2.5TRE1?
For technical support, including AZ1084D-2.5TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084D-2.5TRE1 requirements.
6.How does Aetrix verify that AZ1084D-2.5TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1084D-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 AZ1084D-2.5TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1084D-2.5TRE1?
All AZ1084D-2.5TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084D-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 AZ1084D-2.5TRE1 part is unused and in its original packaging.
Return procedure for AZ1084D-2.5TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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