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Diodes Incorporated AZ1084CS2-5.0TRE1
- Part No.:
- AZ1084CS2-5.0TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
AZ1084CS2-5.0TRE1.pdf
- Description:
- IC REG LINEAR 5V 5A TO263-2
- Quantity:
- Payment:
- Shipping:
Inventory:2,775
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Product details
Overview
AZ1084CS2-5.0TRE1 from Diodes Incorporated is a fixed-output 5.0V, 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 serves as a post-regulator for switching supplies and microprocessor core power in desktop PCs and embedded systems.
For engineers reviewing the AZ1084CS2-5.0TRE1 datasheet, AZ1084CS2-5.0TRE1 pinout, AZ1084CS2-5.0TRE1 application, or AZ1084CS2-5.0TRE1 equivalent, key selection criteria include dropout voltage at 5A, thermal shutdown behavior, compatibility with low-ESR ceramic output capacitors, and fixed 5.0V output tolerance under varying line/load conditions.
Technical Context
The AZ1084CS2-5.0TRE1 uses a trimmed bandgap reference and internal current-limiting circuit to maintain stable 5.0V output across 10mA–5A load range and input voltages up to 12V. Its thermal protection activates when junction temperature exceeds +150°C, preventing damage during overload or high ambient conditions.
It operates within 0°C to +125°C junction temperature range and achieves 72dB PSRR at 120Hz with 25µF tantalum output capacitor. The device requires no external compensation and supports fast transient response with 10µF input and 22µF output ceramic capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±1% (4.9V–5.1V), specified at IOUT = 0mA and VIN = 8V; maintains regulation across 10mA–5A load and 6.5V–10V input range |
| Dropout Voltage | 1.35V typical at 4.5A, enabling operation with only 6.35V input to sustain 5.0V output under full load |
| Output Current | 5A continuous, with 6.5A current limit protecting against short-circuit and overload conditions |
| Line Regulation | 0.5–10mV over 6.5V–10V input range, minimizing output variation due to upstream supply ripple or sag |
| Load Regulation | 5–35mV over 0–5A load step, ensuring stable voltage delivery during processor core current transients |
| Thermal Resistance θJC | 7.36°C/W junction-to-case, enabling efficient heat transfer to PCB copper pour or heatsink in TO252-2 (3) package |
| PSRR | 72dB at 120Hz, suppressing low-frequency ripple from switch-mode pre-regulators before delivering clean 5V to sensitive logic |
Pinout & Package
Package: TO252-2 (3), surface-mount, single-gauge leadframe with exposed thermal pad (pin 2). Pin 1: INPUT; Pin 2: OUTPUT; Pin 3: GND (for fixed 5.0V version). Thermal pad must be soldered to PCB copper area for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Unregulated Input Supply | Accepts 6.5V–12V DC input; requires ≥10µF low-ESR ceramic capacitor placed adjacent to pin for stability and transient response |
| 2 (OUTPUT) | Regulated 5.0V Output | Delivers up to 5A; connects directly to load; requires ≥22µF low-ESR ceramic capacitor for loop stability and noise suppression |
| 3 (GND) | Ground Reference | Common return path for input/output currents and internal bandgap reference; must be tied to low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 1.35V typical at 5A enables use with minimal input headroom-critical for battery-powered or multi-rail systems where efficiency and thermal margin matter |
| Integrated Thermal Protection | Automatic shutdown at +150°C junction temperature prevents permanent damage during sustained overload or poor PCB thermal design |
| Current Limiting | 6.5A foldback current limit protects both regulator and downstream circuitry during output shorts or excessive load transients |
| Ceramic Capacitor Compatible | Stable with ≥10µF X7R/X5R ceramic input and ≥22µF ceramic output capacitors-reducing BOM cost and board space vs. tantalum alternatives |
| High PSRR at Low Frequency | 72dB rejection at 120Hz suppresses ripple from AC/DC adapters or buck converters, preserving signal integrity in analog and digital subsystems |
Applications
| Desktop PC Core Power | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Providing clean 5V rail to CPU voltage regulator controller (VRM) input or auxiliary logic in ATX mainboards. IC Role / Device Role / Timing Role: Post-regulator stabilizing switched 12V or 5VSB rails before delivery to VRM or BIOS chip. Use Value: 5A capability and 1.35V dropout allow direct use of 6.35V intermediate bus, reducing need for additional conversion stages and improving system efficiency. |
Use Scenario: Powering isolated digital I/O drivers and communication interfaces (RS-485, CAN transceivers) in programmable logic controllers. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering stable 5V to interface ICs requiring low-noise, high-current supply. Use Value: 72dB PSRR ensures immunity to noise from motor drives and relay coils sharing same 12V/24V backplane, maintaining data integrity. |
| Embedded Microprocessor Supply | Battery Charger Management |
|
Use Scenario: Supplying 5V to ARM Cortex-A/R series SoCs and DDR memory termination in industrial gateways and edge AI devices. IC Role / Device Role / Timing Role: Primary core power regulator for SoC peripherals and memory subsystems requiring tight voltage tolerance. Use Value: ±1% output accuracy and <35mV load regulation ensure reliable operation across temperature and dynamic load changes without brownout. |
Use Scenario: Generating regulated 5V bias for charging IC control logic, LED status indicators, and USB enumeration circuits in Li-ion wall adapters. IC Role / Device Role / Timing Role: Secondary regulator deriving clean 5V from primary switching converter output during constant-voltage charge phase. Use Value: Thermal shutdown and current limit protect against fault conditions during battery insertion or cell mismatch, enhancing safety certification compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 5V, 5A LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APL5315-50BI-TRG1 | Higher dropout (1.6V typ at 5A), lower PSRR (65dB), same TO252-2 (3) package | Limited suitability for low-headroom designs; less effective ripple suppression in noisy SMPS environments | Prefer when cost sensitivity outweighs dropout and PSRR requirements |
| TLV1117-50CDR | Lower current rating (800mA), higher dropout (1.2V min), SO-8 package, no thermal shutdown | Not viable for 5A loads; unsuitable for high-power embedded or industrial applications | Only consider for low-power auxiliary rails where footprint and cost dominate |
Compared with APL5315-50BI-TRG1 and TLV1117-50CDR, AZ1084CS2-5.0TRE1 delivers superior thermal robustness, tighter output tolerance, and higher PSRR-making it the only option among the three capable of sustaining 5A continuous load with safe thermal margin and clean 5V output in demanding industrial and computing applications.
Availability
AZ1084CS2-5.0TRE1 is available at Aetrix Electronics and suitable for desktop PC power delivery, industrial PLC I/O modules, and embedded microprocessor supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AZ1084CS2-5.0TRE1 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 for power management, signal integrity, and connectivity applications.
The AZ1084C series targets high-current linear regulation in space-constrained, thermally demanding environments-designed specifically for post-regulation, microprocessor core power, and battery charger bias rails where precision, reliability, and thermal resilience are critical.
FAQ
What is the minimum input voltage required for AZ1084CS2-5.0TRE1 to regulate 5.0V at 5A?
The minimum input voltage is 6.35V, calculated from the typical 1.35V dropout voltage plus the 5.0V output. At 4.5A load, the datasheet specifies VDROP = 1.35V typical; derating to 1.5V maximum ensures regulation across temperature and process variation. Input below 6.5V risks dropout and unregulated output.
Can AZ1084CS2-5.0TRE1 be used with ceramic output capacitors?
Yes-it is explicitly designed for low-ESR ceramic capacitors. The datasheet recommends ≥22µF X7R/X5R ceramic at the output and ≥10µF at the input. Unlike older LDOs, it does not require ESR-based stabilization, eliminating need for tantalum or aluminum electrolytic capacitors.
Does AZ1084CS2-5.0TRE1 include reverse polarity protection?
No. The device lacks integrated reverse-input protection. If reverse voltage exposure is possible in the application, an external series Schottky diode (e.g., 1N5819) must be added between input and VIN pin to prevent damage, as reverse bias beyond -0.3V can degrade performance or cause failure.
How does thermal shutdown behave during sustained overload?
When junction temperature reaches +150°C, the device enters thermal shutdown-halting output conduction until die cools to ~135°C hysteresis threshold. During shutdown, quiescent current drops to ~5mA, minimizing self-heating. Recovery is automatic and does not require power cycle or reset signal.
AZ1084CS2-5.0TRE1 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):
- 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
AZ1084CS2-5.0TRE1 FAQ
1.How can I place an order for AZ1084CS2-5.0TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084CS2-5.0TRE1 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 AZ1084CS2-5.0TRE1 reliable?
The price and inventory of AZ1084CS2-5.0TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1084CS2-5.0TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1084CS2-5.0TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084CS2-5.0TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084CS2-5.0TRE1?
AZ1084CS2-5.0TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084CS2-5.0TRE1 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 AZ1084CS2-5.0TRE1?
For technical support, including AZ1084CS2-5.0TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084CS2-5.0TRE1 requirements.
6.How does Aetrix verify that AZ1084CS2-5.0TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1084CS2-5.0TRE1 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 AZ1084CS2-5.0TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1084CS2-5.0TRE1?
All AZ1084CS2-5.0TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084CS2-5.0TRE1, 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 AZ1084CS2-5.0TRE1 part is unused and in its original packaging.
Return procedure for AZ1084CS2-5.0TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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