My Inquiry
My Account
Diodes Incorporated AZ1084CS-3.3TRE1
- Part No.:
- AZ1084CS-3.3TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
AZ1084CS-3.3TRE1.pdf
- Description:
- IC REG LINEAR 3.3V 5A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:119
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AZ1084CS-3.3TRE1 from Diodes Incorporated is a fixed-output 3.3V, 5A low-dropout linear regulator in TO252-2 (3) package with 1.35V typical dropout at full load, thermal shutdown and current limiting, designed for post-regulation after switching supplies and microprocessor core power delivery.
For engineers reviewing the AZ1084CS-3.3TRE1 datasheet, AZ1084CS-3.3TRE1 pinout, AZ1084CS-3.3TRE1 application, or AZ1084CS-3.3TRE1 equivalent, key selection criteria include dropout voltage at 5A, thermal resistance (θJC = 7.36°C/W), load regulation (±7mV), compatibility with low-ESR ceramic output capacitors, and fixed 3.3V output tolerance (±1% over temperature and load).
Technical Context
The AZ1084CS-3.3TRE1 integrates a trimmed bandgap reference and on-chip thermal limiting to protect against junction overheating under overload or high ambient conditions. Its internal current-limit circuit sets a 6.5A peak limit independent of input voltage.
It operates across 0°C to +125°C junction temperature range with input voltage up to 12V, supports stable regulation with ≥10µF ceramic output capacitance, and delivers ±0.1% typical load regulation and 0.5mV typical line regulation over its operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% (3.234V–3.366V) across 0–5A load and 0°C–125°C TJ |
| Dropout Voltage | 1.35V typical at 4.5A; enables operation with VIN as low as 4.65V for 3.3V output |
| Output Current | Continuous 5A DC output; supports transient loads up to 6.5A before current limiting engages |
| Thermal Resistance | θJC = 7.36°C/W; enables efficient heat transfer from die to PCB copper pad in TO252-2 (3) |
| Load Regulation | ±7mV (0–5A); ensures stable 3.3V supply under dynamic CPU/core load changes |
| Line Regulation | ±0.5mV (4.8–10V VIN); maintains tight output despite upstream converter ripple or sag |
| PSRR | 72dB at 120Hz; suppresses low-frequency switching noise from preceding DC/DC stage |
Pinout & Package
Package: TO252-2 (3), surface-mount, thermally enhanced DPAK variant with exposed drain pad (Pin 2) for direct PCB thermal conduction. Dimensions: 6.7mm × 10.4mm × 2.38mm (L×W×H), 0.312g mass, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INPUT | Unregulated input supply connection; requires ≥10µF low-ESR ceramic capacitor placed near pin |
| 2 | OUTPUT | Regulated 3.3V output; connects directly to load and output capacitor; also serves as thermal pad |
| 3 | GND | Ground reference for internal bandgap and error amplifier; must be low-impedance connection to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR capacitor support | Stable with ≥10µF ceramic output cap-reduces board area and eliminates tantalum reliability risks |
| Integrated thermal protection | Automatic shutdown at TJ > +150°C; resumes operation after cooldown-no external thermal sensor needed |
| Trimmed bandgap reference | 1.225–1.270V reference with <0.5% drift over temperature-ensures output accuracy without calibration |
| Lead-free & green compliance | Fully RoHS 3 compliant (<900ppm Br/Cl, <1000ppm Sb); suitable for automotive and industrial environmental requirements |
| High PSRR at low frequency | 72dB @ 120Hz-effectively filters ripple from AC/DC adapters or buck converter switching artifacts |
Applications
| Microprocessor Core Supply | Battery Charger Post-Regulation |
|---|---|
Use Scenario: Providing clean, low-noise 3.3V power to ARM Cortex-A/RISC-V SoC cores during burst-mode execution. IC Role / Device Role / Timing Role: Final-stage linear regulator delivering tightly regulated voltage after primary buck converter. Use Value: 1.35V dropout allows use with 5V intermediate bus; ±7mV load regulation prevents core voltage droop during 0→5A transients. | Use Scenario: Refining output of switch-mode battery charger IC to meet Li-ion cell charging voltage tolerance. IC Role / Device Role / Timing Role: Precision post-regulator ensuring stable 3.3V bias for charger management MCU and sensing circuitry. Use Value: 0.5mV line regulation rejects input ripple from charger IC; thermal shutdown protects during fault conditions. |
| Desktop PC I/O Rail | Industrial PLC Logic Power |
Use Scenario: Generating isolated 3.3V for PCIe slot auxiliary power or USB controller logic in desktop motherboards. IC Role / Device Role / Timing Role: High-current LDO supplying multiple digital I/O banks with minimal cross-talk. Use Value: 72dB PSRR suppresses noise coupling from adjacent high-speed data lanes; TO252 thermal pad simplifies heatsinking. | Use Scenario: Powering programmable logic controllers' FPGA configuration memory and interface peripherals in harsh environments. IC Role / Device Role / Timing Role: Robust local regulator tolerant of wide input variation and ambient temperature swings (0°C–125°C). Use Value: Guaranteed operation to +125°C junction; ±1% output accuracy ensures reliable SPI/I²C communication timing margins. |
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 |
|---|---|---|---|
| AP1117-3.3RT | 1A output, 1.3V dropout at 1A; smaller SOT-223 package; no thermal shutdown latch | Not suitable for >2A loads; limited thermal performance in high-ambient enclosures | Select only for space-constrained, low-current designs where 5A capability is unnecessary |
| TLV1117-33CDCY | 800mA output, 1.2V dropout at 800mA; SO-8 package; 0.2% initial accuracy | Lacks current/thermal robustness for industrial motor control or computing loads | Prefer for precision analog rails where ultra-low quiescent current (6mA) matters more than current capacity |
Compared with AP1117-3.3RT and TLV1117-33CDCY, the AZ1084CS-3.3TRE1 delivers 6.25× and 6.25× higher continuous current respectively, with integrated thermal shutdown and 5A-rated package-making it uniquely suited for high-power embedded computing and industrial power rail consolidation.
Availability
AZ1084CS-3.3TRE1 is available at Aetrix Electronics and suitable for microprocessor core supplies, battery charger post-regulation, and industrial PLC logic power requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AZ1084CS-3.3TRE1 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 company specializing in discrete, analog, and mixed-signal devices, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The AZ1084C series belongs to Diodes' high-current LDO portfolio, engineered specifically for post-regulation in power systems where low dropout, thermal resilience, and compatibility with ceramic capacitors are critical-targeting computing, industrial, and battery-powered applications.
FAQ
What is the minimum input voltage required for stable 3.3V output at 5A?
The AZ1084CS-3.3TRE1 requires a minimum input voltage of 4.65V at 5A load, based on its 1.35V typical dropout voltage. At worst-case 1.5V dropout (per datasheet limit), VIN must be ≥4.8V. Input must also remain within the 4.8V–8V recommended range for specified output accuracy.
Can this regulator operate without an output capacitor?
No. The AZ1084CS-3.3TRE1 requires a minimum 10µF ceramic output capacitor for stability, as confirmed in the Typical Applications Circuit and Electrical Characteristics table. Omitting it causes oscillation and loss of regulation; tantalum or aluminum electrolytic caps are not recommended due to ESR-related instability.
Is the TO252-2 (3) package thermally compatible with standard PCB layout practices?
Yes. The TO252-2 (3) package uses Pin 2 as an exposed thermal pad. Diodes specifies a 7.0mm × 2.5mm copper pad (X1/Y1 per DS36545 Rev.5 p.13) with ≥2.1mm solder mask opening and thermal vias to inner ground planes-enabling θJA ≤ 100°C/W in standard 4-layer boards.
Does AZ1084CS-3.3TRE1 support reverse polarity or reverse current protection?
No. The AZ1084CS-3.3TRE1 lacks internal reverse-voltage or reverse-current blocking. If input can fall below output (e.g., during hot-swap or backup battery scenarios), an external Schottky diode in series with the input is required to prevent backfeed and potential damage.
AZ1084CS-3.3TRE1 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):
- 3.3V
- 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-3.3TRE1 FAQ
1.How can I place an order for AZ1084CS-3.3TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084CS-3.3TRE1 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-3.3TRE1 reliable?
The price and inventory of AZ1084CS-3.3TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1084CS-3.3TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1084CS-3.3TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084CS-3.3TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084CS-3.3TRE1?
AZ1084CS-3.3TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084CS-3.3TRE1 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-3.3TRE1?
For technical support, including AZ1084CS-3.3TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084CS-3.3TRE1 requirements.
6.How does Aetrix verify that AZ1084CS-3.3TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1084CS-3.3TRE1 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-3.3TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1084CS-3.3TRE1?
All AZ1084CS-3.3TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084CS-3.3TRE1, 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-3.3TRE1 part is unused and in its original packaging.
Return procedure for AZ1084CS-3.3TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AZ1084CS-3.3TRE1 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
