My Inquiry
My Account
Diodes Incorporated AZ1084CD-ADJTRG1
- Part No.:
- AZ1084CD-ADJTRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1084CD-ADJTRG1.pdf
- Description:
- IC REG LINEAR POS ADJ 5A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,487
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AZ1084CD-ADJTRG1 from Diodes Incorporated is an adjustable 5A low-dropout linear regulator with 1.35V typical dropout at full load, integrated thermal limiting and current limiting (6.5A), and ±1% output voltage accuracy over 0°C to +125°C junction temperature range. It supports post-regulation of switching supplies and microprocessor core power in desktop PCs and embedded systems using ceramic output capacitors.
For engineers reviewing the AZ1084CD-ADJTRG1 datasheet, AZ1084CD-ADJTRG1 pinout, AZ1084CD-ADJTRG1 application, or AZ1084CD-ADJTRG1 equivalent, key selection criteria include dropout voltage at 5A, adjust-pin current stability (55–120 µA), load regulation (0.1% typ), compatibility with low-ESR ceramics, and TO252-2 (3)/(4)/(5) package thermal performance (θJC = 7.36°C/W).
Technical Context
The AZ1084CD-ADJTRG1 implements a trimmed bandgap reference (1.225–1.270 V) with external resistor feedback for programmable output voltage (VOUT = VREF × (1 + R2/R1) + IADJ × R2). Its internal current-limiting circuit activates at 5.5–6.5A and works in tandem with on-chip thermal shutdown to protect against overload and ambient-induced junction overheating.
It operates across 2.85–12V input range with stable regulation under 0–5A load, achieving 0.015% line regulation and 0.1% load regulation (typ) in adjustable configuration. The device maintains RMS output noise below 0.003% of VOUT (10Hz–10kHz) and delivers 72dB PSRR at 120Hz with 25µF tantalum output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 5A continuous - supports high-current microprocessor core rails and battery charger post-regulation stages. |
| Dropout Voltage | 1.35V typical at 5A - enables operation with minimal VIN–VOUT headroom, critical for 3.3V/2.5V systems powered from 5V rails. |
| Reference Voltage | 1.225–1.270V - sets precision output via external resistors; tolerance directly impacts final VOUT accuracy. |
| Adjust Pin Current | 55–120 µA - determines R1/R2 sizing impact on load regulation and thermal drift in adjustable configurations. |
| Thermal Resistance θJC | 7.36°C/W - enables efficient heat transfer to PCB copper pour or heatsink, supporting >4W dissipation before thermal shutdown. |
| PSRR @ 120Hz | 72dB - suppresses ripple from upstream switching converters, reducing need for additional filtering stages. |
| Operating Junction Temp | 0°C to +125°C - qualified for industrial and embedded applications without derating up to maximum ambient. |
Pinout & Package
AZ1084CD-ADJTRG1 is packaged in TO252-2 (3), TO252-2 (4), TO252-2 (5), or TO252 (Type CJ) surface-mount packages. All variants feature identical pin functional mapping and share a common thermal pad (Pin 2) for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (INPUT) | Input voltage supply connection | Accepts 2.85–12V DC; requires local 10µF ceramic bypass capacitor to minimize high-frequency impedance. |
| Pin 2 (OUTPUT) | Regulated output voltage node | Delivers up to 5A; connects to 22µF ceramic output capacitor and load; serves as thermal conduction path to PCB. |
| Pin 3 (ADJ/GND) | Feedback reference and ground return | In adjustable mode: connects R1–R2 divider to set VOUT; in fixed versions: tied internally to GND; must be low-impedance ground path. |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR ceramic capacitor support | Stable with ≥10µF X5R/X7R ceramics - eliminates need for bulk tantalum/electrolytic, reducing board area and improving reliability. |
| Integrated thermal protection | Automatic shutdown at TJ ≥ +150°C - prevents permanent damage during sustained overload or poor heatsinking. |
| Current limiting | 6.5A foldback limit - protects downstream circuitry and upstream source during short-circuit or startup surge events. |
| Lead-free & RoHS 3 compliant | Fully compliant per EU Directive 2015/863/EU - meets global environmental requirements for industrial and commercial end equipment. |
| High PSRR at low frequency | 72dB @ 120Hz - effectively attenuates switching converter ripple without requiring large LC filters or ferrite beads. |
Applications
| Microprocessor Core Supply | Battery Charger Post-Regulation |
|---|---|
|
Use Scenario: Providing clean, low-noise 1.2–3.3V power to ARM Cortex-A/RISC-V SoCs in industrial gateways. IC Role / Device Role / Timing Role: Primary LDO delivering stable core voltage with fast transient response to dynamic CPU load changes. Use Value: 0.1% load regulation and 100µs load transient recovery ensure logic integrity during burst-mode execution without brownout. |
Use Scenario: Final-stage regulation after buck converter in 5V-input Li-ion battery chargers for portable medical devices. IC Role / Device Role / Timing Role: Precision post-regulator setting exact charge termination voltage (e.g., 4.20V ±10mV) via resistor divider. Use Value: 1.225–1.270V reference tolerance and <0.003% RMS noise prevent false full-charge detection and extend battery cycle life. |
| Desktop PC VRM Auxiliary Rail | Industrial FPGA I/O Bank Supply |
|
Use Scenario: Generating 2.5V or 3.3V auxiliary rails for DDR memory termination or PCIe slot power in compact desktop motherboards. IC Role / Device Role / Timing Role: Secondary LDO supplying low-noise bias to memory interface components synchronized to system clock domains. Use Value: 72dB PSRR suppresses 100–500kHz switching noise from main VRM, preventing timing jitter in high-speed data lanes. |
Use Scenario: Powering configurable I/O banks on Xilinx Artix-7 or Intel MAX 10 FPGAs in factory automation controllers. IC Role / Device Role / Timing Role: Adjustable rail generator enabling field-programmable VCCIO (1.2–3.3V) per board revision or customer requirement. Use Value: External resistor programming allows single BOM to support multiple I/O standards (LVCMOS, SSTL, HSTL) without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable 5A LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1963AEST-ADJ#TRPBF | Lower dropout (340mV @ 1.5A), but rated only to 1.5A; higher cost; requires larger output cap (≥47µF) for stability. | Not suitable for 5A loads; limited to low-power FPGA I/O or sensor signal chains. | Select only when <2A current and ultra-low dropout (<0.5V) are mandatory; verify thermal design for 1.5A max. |
| TPS75733KTTT | Fixed 3.3V output only; 5A rating; 1.15V dropout @ 5A; no adjust pin; higher quiescent current (12mA vs. 5–10mA). | Cannot replace adjustable function; lacks resistor-based VOUT tuning needed for multi-voltage systems. | Choose only for dedicated 3.3V rails where flexibility is unnecessary and lowest possible dropout is prioritized. |
Compared with LT1963AEST-ADJ#TRPBF and TPS75733KTTT, AZ1084CD-ADJTRG1 uniquely balances 5A capability, adjustability, 1.35V dropout, and TO252 thermal performance-making it optimal for industrial and computing applications requiring both high current and voltage flexibility.
Availability
AZ1084CD-ADJTRG1 is available at Aetrix Electronics and suitable for microprocessor core supplies, battery charger post-regulation, and industrial FPGA I/O bank power requiring stable component supply, long-term lifecycle assurance, and RoHS 3 compliance.
Supply support for AZ1084CD-ADJTRG1 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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
AZ1084CD-ADJTRG1 belongs to Diodes' AZ1084C series of high-current LDOs designed specifically for post-regulation in power-constrained embedded systems where thermal efficiency, ceramic capacitor compatibility, and wide input range are essential.
FAQ
What is the minimum load current required for stable operation of AZ1084CD-ADJTRG1?
The AZ1084CD-ADJTRG1 requires a minimum load current of 3 mA at TA = +25°C, increasing to 10 mA at TJ = +125°C. This ensures proper biasing of internal circuitry and prevents output voltage overshoot during light-load transients. External pull-down resistors may be added if the application load drops below this threshold.
Can AZ1084CD-ADJTRG1 be used with ceramic output capacitors smaller than 22µF?
Yes - the device is stable with ≥10µF X5R/X7R ceramic capacitors, as confirmed in the datasheet's "Compatible with Low ESR Ceramic Capacitor" feature. Using 10µF reduces board space and improves reliability versus tantalum, but 22µF is recommended for optimal transient response and PSRR above 10kHz.
How does the adjust pin current (IADJ) affect output voltage accuracy?
IADJ (55–120 µA) flows through R2 in the feedback divider, contributing an error term (IADJ × R2) to VOUT. For example, with R2 = 150Ω, this adds 8–18 mV offset. To minimize impact, keep R1 + R2 ≤ 20kΩ while maintaining ≥3 mA divider current - balancing accuracy, power loss, and noise sensitivity.
Is AZ1084CD-ADJTRG1 qualified for automotive applications?
No - AZ1084CD-ADJTRG1 is specified for 0°C to +125°C operating junction temperature and is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AZ1084CQ series) with PPAP documentation, IATF 16949 manufacturing, and extended qualification testing; contact Diodes directly for those part numbers.
AZ1084CD-ADJTRG1 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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 10.5V
- 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-252-3
AZ1084CD-ADJTRG1 FAQ
1.How can I place an order for AZ1084CD-ADJTRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1084CD-ADJTRG1 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 AZ1084CD-ADJTRG1 reliable?
The price and inventory of AZ1084CD-ADJTRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1084CD-ADJTRG1 is usually 5 days.
3.What payment methods are accepted for AZ1084CD-ADJTRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1084CD-ADJTRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1084CD-ADJTRG1?
AZ1084CD-ADJTRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1084CD-ADJTRG1 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 AZ1084CD-ADJTRG1?
For technical support, including AZ1084CD-ADJTRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1084CD-ADJTRG1 requirements.
6.How does Aetrix verify that AZ1084CD-ADJTRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1084CD-ADJTRG1 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 AZ1084CD-ADJTRG1 meets industry standards.
7.What is the process for return or replacement of AZ1084CD-ADJTRG1?
All AZ1084CD-ADJTRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1084CD-ADJTRG1, 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 AZ1084CD-ADJTRG1 part is unused and in its original packaging.
Return procedure for AZ1084CD-ADJTRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AZ1084CD-ADJTRG1 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
