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Diodes Incorporated AZ1084CS2-2.5TRE1
- Part No.:
- AZ1084CS2-2.5TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
AZ1084CS2-2.5TRE1.pdf
- Description:
- IC REG LINEAR 2.5V 5A TO263-2
- Quantity:
- Payment:
- Shipping:
Inventory:1,320
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Product details
Overview
AZ1084CS2-2.5TRE1 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 temperature and load. It supports post-regulation for switching supplies and microprocessor core supplies requiring stable low-noise DC power.
For engineers reviewing the AZ1084CS2-2.5TRE1 datasheet, AZ1084CS2-2.5TRE1 pinout, AZ1084CS2-2.5TRE1 application, or AZ1084CS2-2.5TRE1 equivalent, key selection criteria include dropout voltage at 5A, thermal shutdown behavior, compatibility with ceramic output capacitors, and fixed 2.5V output tolerance across 0°C to +125°C junction range.
Technical Context
The AZ1084CS2-2.5TRE1 integrates a trimmed bandgap reference and current-limiting circuit, delivering regulated 2.5V output with 0.5% typical line regulation and 7mV typical load regulation. Its internal thermal protection activates at +150°C junction temperature, and it operates with input voltages up to 12V.
Designed for high-current linear regulation, it features 7.36°C/W junction-to-case thermal resistance and supports stable operation with ≥10µF ceramic output capacitance. The device maintains 0.003% RMS output noise (10Hz–10kHz) and 72dB PSRR at 120Hz under 5A load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% (min/max over 0°C to +125°C, 10mA–5A load) |
| Dropout Voltage | 1.35V typical at 4.5A; enables regulation with VIN as low as 3.85V |
| Output Current | 5A continuous; supports high-power FPGA or SoC core rails |
| Current Limit | 6.5A typical; provides short-circuit protection without external circuitry |
| Thermal Shutdown | Activates at +150°C junction; recovers automatically after cooldown |
| PSRR | 72dB at 120Hz; suppresses ripple from upstream switching converters |
| RMS Noise | 0.003% of VOUT (10Hz–10kHz); suitable for noise-sensitive analog subsystems |
Pinout & Package
Package: TO252-2 (3), surface-mount, thermally enhanced DPAK variant with exposed drain pad (pin 2) for PCB heat sinking. Pin 1 = INPUT, Pin 2 = OUTPUT, Pin 3 = GND (fixed-output version).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input | Unregulated DC input (max 12V); requires ≥10µF ceramic bypass capacitor |
| 2 | Output | Regulated 2.5V supply; connects directly to load and output capacitor |
| 3 | GND | Power ground reference; must be low-impedance connection to minimize noise |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR capacitor compatibility | Stable with ≥10µF ceramic output capacitors-reduces board space vs. tantalum |
| Thermal limiting | On-die protection prevents permanent damage during overload or poor heatsinking |
| Lead-free & RoHS 3 compliant | Fully compliant per EU Directive 2015/863/EU; <900ppm Br/Cl, <1000ppm Sb |
| High PSRR at low frequency | 72dB rejection at 120Hz enables clean post-regulation after AC/DC or DC/DC stages |
| Trimmed bandgap reference | 1.225V–1.270V reference ensures tight 2.5V output tolerance without external trimming |
Applications
| Microprocessor Core Supply | Battery Charger Post-Regulator |
|---|---|
Use Scenario: Powering ARM Cortex-A series SoCs requiring tightly regulated 2.5V I/O or auxiliary rail. IC Role / Device Role / Timing Role: Primary linear regulator delivering low-noise, low-ripple 2.5V from intermediate 5V or 12V bus. Use Value: Maintains 0.5% load regulation and 72dB ripple rejection to prevent digital logic errors during burst current transients. | Use Scenario: Final-stage regulation in multi-cell Li-ion charger systems where precision voltage is critical for cell balancing. IC Role / Device Role / Timing Role: Fixed-output LDO ensuring accurate 2.5V reference or bias voltage for charge controller ICs. Use Value: ±1% output accuracy over temperature guarantees consistent charging thresholds and avoids overvoltage stress on battery management ICs. |
| Desktop PC VRM Auxiliary Rail | Industrial PLC I/O Module Supply |
Use Scenario: Providing stable 2.5V for DDR memory termination or PCIe slot auxiliary power in embedded desktop platforms. IC Role / Device Role / Timing Role: Secondary LDO supplying low-noise power to high-speed interface circuitry. Use Value: 0.003% RMS noise and 100°C/W θJA enable reliable operation without active cooling in compact chassis designs. | Use Scenario: Powering isolated analog input/output signal conditioning circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Local regulation for precision ADC drivers and DAC reference buffers. Use Value: Thermal shutdown at +150°C and operation down to 0°C ensure robustness in uncontrolled industrial ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2112K-2.5TRG1 | Lower current (600mA), smaller SOT-23-5 package, higher dropout (300mV @ 300mA) | Suitable only for low-power sensor nodes-not for 5A loads | Select only when board space is critical and load current ≤600mA |
| TLV1117-25CDCYR | 1A output, SOT-223 package, 1.2V dropout @ 800mA, wider input range (up to 15V) | Limited to sub-1A applications; lacks thermal robustness for sustained 5A operation | Use where cost is primary constraint and thermal margin allows derating |
Compared with AP2112K-2.5TRG1 and TLV1117-25CDCYR, the AZ1084CS2-2.5TRE1 uniquely delivers 5A continuous output in TO252 with 1.35V dropout and integrated thermal protection-making it the only viable choice for high-current, thermally constrained linear regulation where alternatives require parallel devices or forced-air cooling.
Availability
AZ1084CS2-2.5TRE1 is available at Aetrix Electronics and suitable for microprocessor core supplies, battery charger post-regulators, and industrial PLC I/O modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AZ1084CS2-2.5TRE1 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 AZ1084C series belongs to Diodes' high-current LDO portfolio, engineered specifically for post-regulation in power-constrained systems where low dropout, thermal resilience, and ceramic capacitor compatibility are mandatory.
FAQ
What is the maximum input voltage rating for AZ1084CS2-2.5TRE1?
The absolute maximum input voltage is 13.2V, but the recommended operating range is 4.0V to 12V for the 2.5V fixed version. Exceeding 12V risks exceeding thermal limits under full 5A load due to increased power dissipation (PD = (VIN − 2.5V) × IOUT), especially without adequate heatsinking.
Can AZ1084CS2-2.5TRE1 operate with a 10µF ceramic output capacitor?
Yes-this device is explicitly characterized and stable with ≥10µF ceramic output capacitors, unlike older LDOs requiring tantalum or electrolytic types. The datasheet confirms stability with 10µF X5R/X7R ceramics and specifies ESR < 10mΩ, enabling smaller footprint and longer lifetime.
Does AZ1084CS2-2.5TRE1 include reverse polarity protection?
No-AZ1084CS2-2.5TRE1 lacks internal reverse-voltage protection. If input polarity reversal is possible in the system, an external series Schottky diode (e.g., 1N5819) or PMOS-based protection circuit must be added to prevent damage to the regulator and downstream circuitry.
How does thermal shutdown behave during sustained overload?
When junction temperature reaches +150°C, the device enters thermal shutdown-halting output conduction until die temperature falls below ~140°C hysteresis. Recovery is automatic and does not require power cycle; however, repeated cycling indicates insufficient PCB copper area or heatsinking, requiring layout revision per the recommended TO252-2 (3) pad layout (11.6mm × 7.0mm thermal pad).
AZ1084CS2-2.5TRE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- 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
AZ1084CS2-2.5TRE1 FAQ
1.How can I place an order for AZ1084CS2-2.5TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084CS2-2.5TRE1 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 AZ1084CS2-2.5TRE1 reliable?
The price and inventory of AZ1084CS2-2.5TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1084CS2-2.5TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1084CS2-2.5TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084CS2-2.5TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084CS2-2.5TRE1?
AZ1084CS2-2.5TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084CS2-2.5TRE1 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 AZ1084CS2-2.5TRE1?
For technical support, including AZ1084CS2-2.5TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084CS2-2.5TRE1 requirements.
6.How does Aetrix verify that AZ1084CS2-2.5TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1084CS2-2.5TRE1 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 AZ1084CS2-2.5TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1084CS2-2.5TRE1?
All AZ1084CS2-2.5TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084CS2-2.5TRE1, 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 AZ1084CS2-2.5TRE1 part is unused and in its original packaging.
Return procedure for AZ1084CS2-2.5TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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