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Diodes Incorporated AZ1084S-1.5TRE1
- Part No.:
- AZ1084S-1.5TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
AZ1084S-1.5TRE1.pdf
- Description:
- IC REG LINEAR 1.5V 5A TO263-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,344
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Product details
Overview
AZ1084S-1.5TRE1 from Diodes Incorporated is a fixed-output 1.5V, 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 junction temperature. It delivers stable microprocessor core power with 60°C/W junction-to-ambient thermal resistance and supports post-regulation after switching supplies.
For engineers reviewing the AZ1084S-1.5TRE1 datasheet, AZ1084S-1.5TRE1 pinout, AZ1084S-1.5TRE1 application, or AZ1084S-1.5TRE1 equivalent, key selection criteria include dropout voltage at 5A, thermal shutdown behavior, load regulation (±15mV), and compatibility with TO-263 PCB layout and heatsinking requirements.
Technical Context
The AZ1084S-1.5TRE1 implements a trimmed band-gap reference with internal resistor divider for fixed 1.5V output, eliminating external feedback components. Its current-limiting circuit activates at 6.5A and integrates thermal foldback to protect against sustained overload or high ambient temperatures.
Designed for high-current linear regulation, it operates with input voltages up to 12V and maintains ≤0.1% load regulation across 0–5A output current when VIN–VOUT ≥ 3V. The device relies on external input/output capacitors (≥10µF each) for stability and ripple rejection of 72dB at 120Hz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% (1.485–1.515V) at 10mA–5A load ensures compatibility with 1.5V logic and low-voltage processor cores. |
| Dropout Voltage | 1.3V typical at 5A load - enables operation with only 2.8V input, critical for battery-backed or multi-rail systems. |
| Output Current | 5A continuous - supports high-power FPGA I/O banks or multi-core SoC VDDIO rails without external pass devices. |
| Current Limit | 6.5A minimum - provides robust short-circuit protection while allowing brief inrush during system startup. |
| Thermal Shutdown | Activates at +150°C junction temperature - prevents permanent damage during sustained overload or inadequate heatsinking. |
| PSRR | 72dB at 120Hz - suppresses ripple from upstream switching converters, reducing need for additional filtering stages. |
| Load Regulation | ±15mV (0–5A) - maintains tight voltage tolerance under dynamic CPU/GPU load transients. |
Pinout & Package
Package: TO-263 (D²PAK), surface-mount, thermally enhanced with exposed tab connected to output. Requires minimum 16.76mm × 8.56mm copper pad (per datasheet Z/X2/Y2 dimensions) for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Input voltage supply connection | Accepts 3.0–12V DC; must be decoupled with ≥10µF low-ESR capacitor within 5mm of pin. |
| 2 (OUTPUT) | Regulated 1.5V output and thermal tab | Delivers 5A; tab is electrically tied to OUTPUT - requires isolation from ground plane unless output is referenced to system ground. |
| 3 (ADJ/GND) | Reference/ground node for internal band-gap | Must be connected directly to low-impedance ground plane; routing inductance here degrades load regulation and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout operation | 1.3V typical at 5A enables use in 3.3V or 5V intermediate bus architectures without excessive power loss. |
| Integrated thermal protection | Automatic foldback at +150°C junction temperature eliminates need for external thermal sensors or shutdown logic. |
| Fixed 1.5V output | No external resistors required - reduces BOM count and layout area versus adjustable LDOs in space-constrained designs. |
| Lead-free & RoHS-compliant | TO-263 package meets EU Directive 2011/65/EU and contains <900ppm Br+Cl - suitable for green manufacturing programs. |
Applications
| Microprocessor Core Supply | Battery Charger Post-Regulation |
|---|---|
Use Scenario: Powering ARM Cortex-A series or RISC-V SoC core rails requiring clean, low-noise 1.5V at up to 5A. IC Role / Device Role / Timing Role: Primary voltage regulator delivering stable VDD_CORE with fast transient response to CPU DVFS events. Use Value: Maintains ±15mV load regulation during 0→5A steps, preventing logic errors or clock instability in high-performance embedded processors. | Use Scenario: Final-stage regulation after a buck charger IC (e.g., BQ246xx) to deliver precise 1.5V to Li-ion charging management circuitry. IC Role / Device Role / Timing Role: Precision post-regulator ensuring accurate reference voltage for battery voltage sensing and charge termination comparators. Use Value: 0.5% temperature stability over 0–125°C minimizes drift in battery voltage measurement, improving charge cycle accuracy. |
| Desktop PC VRM Auxiliary Rail | Industrial PLC I/O Module Supply |
Use Scenario: Generating auxiliary 1.5V rail for DDR memory termination (VTT) or PCIe slot reference in compact desktop motherboards. IC Role / Device Role / Timing Role: High-current LDO supplying low-noise bias to memory interface components synchronized to 100MHz+ clocks. Use Value: 72dB PSRR at 120Hz attenuates switching noise from main VRM, reducing jitter on memory timing signals. | Use Scenario: Providing isolated 1.5V power to analog sensor signal conditioning circuits in programmable logic controller modules. IC Role / Device Role / Timing Role: Low-drift, thermally robust regulator powering precision op-amps and ADC references in harsh industrial environments. Use Value: Operation up to +125°C junction temperature and ±0.5% long-term stability ensure reliable sensor calibration over 1000+ hours of continuous operation. |
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 |
|---|---|---|---|
| AP1117E15G-13 | 1A output, 1.2V dropout at 1A, SOT-223 package | Lower current capacity limits use to sub-2A loads; smaller footprint but higher thermal resistance (120°C/W). | Select only for space-constrained, low-power applications where 5A capability is unnecessary. |
| LT1963AES8-1.5#TRPBF | 1.5A output, 340mV dropout at 1.5A, SO-8 package, 70dB PSRR | Cannot support >2A loads; superior noise performance but lacks thermal robustness for continuous 5A operation. | Prefer for noise-sensitive analog subsystems where current demand is ≤1.5A and board area is premium. |
Compared with AP1117E15G-13 and LT1963AES8-1.5#TRPBF, AZ1084S-1.5TRE1 uniquely combines 5A output, TO-263 thermal performance, and fixed 1.5V accuracy - making it irreplaceable for high-current digital core or industrial power applications demanding both current and thermal margin.
Availability
AZ1084S-1.5TRE1 is available at Aetrix Electronics and suitable for microprocessor core supply, battery charger post-regulation, and industrial PLC I/O module supply requiring stable component supply and long-term design continuity.
Supply support for AZ1084S-1.5TRE1 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, microprocessor supply, and battery charging applications where low dropout, thermal resilience, and fixed-output simplicity are critical.
FAQ
What is the minimum input voltage required for AZ1084S-1.5TRE1 to maintain regulation at 5A?
The minimum input voltage is 2.8V, calculated as VOUT + VDROP = 1.5V + 1.3V (typical dropout at 5A). At 125°C junction temperature, dropout may rise to 1.5V, requiring ≥3.0V input for guaranteed regulation across full temperature range.
Can AZ1084S-1.5TRE1 be used without an input capacitor?
No. A minimum 10µF low-ESR input capacitor placed within 5mm of the INPUT pin is mandatory for stability and to limit peak input current during load transients. Omission risks oscillation, excessive voltage drop, or thermal shutdown under dynamic load.
Is the exposed thermal tab on the TO-263 package electrically isolated?
No. The exposed tab is internally connected to the OUTPUT pin. When mounting to a heatsink or PCB copper pour, ensure electrical isolation unless the output rail is referenced to the same potential as the heatsink or ground plane.
Does AZ1084S-1.5TRE1 support reverse polarity protection?
No. The device lacks integrated reverse-voltage protection. Applying reverse input voltage (>−0.3V) can cause latch-up or permanent damage. An external series Schottky diode (e.g., 1N5819) is required if reverse input conditions are possible in the system.
AZ1084S-1.5TRE1 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):
- 1.5V
- 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-1.5TRE1 FAQ
1.How can I place an order for AZ1084S-1.5TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084S-1.5TRE1 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-1.5TRE1 reliable?
The price and inventory of AZ1084S-1.5TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1084S-1.5TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1084S-1.5TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084S-1.5TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084S-1.5TRE1?
AZ1084S-1.5TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084S-1.5TRE1 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-1.5TRE1?
For technical support, including AZ1084S-1.5TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084S-1.5TRE1 requirements.
6.How does Aetrix verify that AZ1084S-1.5TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1084S-1.5TRE1 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-1.5TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1084S-1.5TRE1?
All AZ1084S-1.5TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084S-1.5TRE1, 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-1.5TRE1 part is unused and in its original packaging.
Return procedure for AZ1084S-1.5TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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