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Diodes Incorporated AZ1086S-1.8TRE1
- Part No.:
- AZ1086S-1.8TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
AZ1086S-1.8TRE1.pdf
- Description:
- IC REG LINEAR 1.8V 1.5A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:2,367
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Product details
Overview
AZ1086S-1.8TRE1 from BCD Semiconductor Manufacturing Limited is a fixed-output 1.8 V, 1.5 A low dropout linear regulator in TO-263-3 package with 1.3 V typical dropout at full load, on-chip thermal shutdown, and ±1% output voltage accuracy over temperature and load. It delivers stable power to microprocessor cores and motherboard VRMs where tight regulation and high current capability are required.
For engineers reviewing the AZ1086S-1.8TRE1 datasheet, AZ1086S-1.8TRE1 pinout, AZ1086S-1.8TRE1 application, or AZ1086S-1.8TRE1 equivalent, this part supports post-regulation of switching supplies, battery-powered telecom modules, and DVD player power rails requiring <20 mV load regulation and 75 dB ripple rejection at 120 Hz.
Technical Context
The AZ1086S-1.8TRE1 integrates a precision bandgap reference (1.225–1.270 V), current-limit circuit (2.3 A typical), and thermal protection with 165 °C shutdown threshold and 30 °C hysteresis. Its internal architecture uses a PNP pass transistor for low dropout and high PSRR performance.
It operates across 0–125 °C junction temperature range with input voltage up to 15 V and requires only 10 μF input and 22 μF output tantalum capacitors for stability. Load regulation remains within ±12 mV from 10 mA to 1.5 A at fixed 1.8 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.5% (1.746–1.854 V) ensures compatibility with 1.8 V logic and memory I/O rails. |
| Dropout Voltage | 1.3 V typical at 1.5 A enables operation with VIN as low as 3.1 V, critical for battery-backed systems. |
| Output Current | 1.5 A continuous delivery supports high-current digital loads like SoC core supplies. |
| Line Regulation | 0.6 mV typical (0.3–6 mV max) maintains output stability despite input rail fluctuations. |
| Load Regulation | 6 mV typical (3–20 mV max) guarantees <±0.33% output deviation across full load range. |
| Ripple Rejection | 75 dB at 120 Hz suppresses switching noise from upstream DC/DC converters. |
| Thermal Shutdown | 165 °C activation with 30 °C hysteresis prevents latch-up during sustained overload. |
Pinout & Package
Package: TO-263-3 (D²PAK), surface-mount, thermally enhanced with exposed tab connected to output (pin 2). Pin 1 = INPUT, Pin 2 = OUTPUT, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input (up to 15 V); requires ≥10 μF ceramic/tantalum bypass near pin. |
| Pin 2 | Output | Regulated 1.8 V supply; connects to exposed thermal pad for heatsinking and current return path. |
| Pin 3 | GND | Reference ground for feedback and thermal sensor; must be low-impedance connection to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout | 1.3 V at 1.5 A enables use in 3.3 V → 1.8 V post-regulation without excessive power loss. |
| Integrated Protection | Current limit (2.3 A) + thermal shutdown (165 °C) eliminate need for external fault management circuitry. |
| High Accuracy Output | ±1% initial tolerance and <0.5% temperature drift ensure reliable operation across industrial temperature range. |
| Stable with Low-ESR Caps | Compatible with 10 μF input / 22 μF output tantalum capacitors-no external compensation required. |
| Lead-Free & Green | E1 suffix indicates RoHS-compliant, halogen-free packaging per JEDEC J-STD-020 reflow profile. |
Applications
| Microprocessor Core Supply | Motherboard VRM Post-Regulation |
|---|---|
Use Scenario: Powering ARM Cortex-A series CPU cores requiring clean, tightly regulated 1.8 V supply under dynamic load. IC Role / Device Role / Timing Role: Final-stage linear regulator delivering low-noise bias to processor I/O and cache domains. Use Value: 75 dB ripple rejection eliminates switching artifacts that cause timing jitter in high-speed interfaces. |
Use Scenario: Secondary regulation after buck converter on ATX motherboard to meet DDR3/DDR4 VDDQ spec. IC Role / Device Role / Timing Role: Precision voltage clamp ensuring <±12 mV load regulation across 0–1.5 A transitions. Use Value: 0.6 mV line regulation prevents voltage droop during PCIe slot hot-plug events. |
| Battery-Powered Telecom Module | DVD-Video Player Power Rail |
Use Scenario: Powering LTE modem baseband ICs in portable hotspot devices operating from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: LDO maintaining 1.8 V for RF transceiver I/O and PMU control logic. Use Value: 1.3 V dropout allows >90% efficiency at end-of-discharge (3.1 V input), extending runtime. |
Use Scenario: Supplying video DAC and MPEG decoder ASICs in consumer DVD players with variable AC adapter input. IC Role / Device Role / Timing Role: Noise-sensitive analog rail regulator decoupling switching supply ripple from video signal path. Use Value: RMS noise <0.003% of VOUT prevents visible horizontal banding in composite video output. |
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 |
|---|---|---|---|
| MIC29152-1.8WU | 1.5 A, 1.8 V fixed, 0.6 V dropout (lower), but requires minimum 100 μF output capacitor. | Better efficiency in low-VIN scenarios; less suitable for space-constrained layouts due to larger cap requirement. | Select when input voltage is ≤3.0 V and board area permits bulk capacitance. |
| TLV1117-18CDCY | 800 mA max output, 1.2 V dropout, SOT-223 package, no integrated thermal hysteresis. | Limited to lower-current peripherals; lacks robust thermal recovery behavior for intermittent overload. | Choose only for cost-sensitive, sub-1 A applications where thermal margin is guaranteed. |
Compared with MIC29152-1.8WU and TLV1117-18CDCY, AZ1086S-1.8TRE1 offers higher current headroom (1.5 A), tighter output tolerance (±1%), and built-in thermal hysteresis-making it optimal for industrial-grade motherboard and telecom modules demanding reliability under transient load stress.
Availability
AZ1086S-1.8TRE1 is available at Aetrix Electronics and suitable for microprocessor core supply, motherboard VRM post-regulation, and battery-powered telecom modules requiring stable component supply across extended temperature and volume production cycles.
Supply support for AZ1086S-1.8TRE1 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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-reliability, cost-optimized linear regulators, MOSFETs, and mixed-signal solutions for industrial and consumer markets.
The AZ1086 series was developed specifically for high-current, low-noise post-regulation in computing and telecom infrastructure-emphasizing dropout minimization, thermal robustness, and compatibility with standard PCB assembly processes.
FAQ
What is the maximum input voltage rating for AZ1086S-1.8TRE1?
The absolute maximum input voltage is 15 V, as specified in the datasheet's Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable long-term use, the recommended maximum is 10 V under all conditions, especially at elevated junction temperatures where power dissipation increases significantly.
Does AZ1086S-1.8TRE1 require an external capacitor on the ADJ/GND pin?
No-AZ1086S-1.8TRE1 is a fixed-output variant; the ADJ/GND pin is internally connected to ground and does not require external components. Unlike the adjustable AZ1086-ADJ version, no resistor divider or compensation network is needed, simplifying layout and reducing BOM count.
Can AZ1086S-1.8TRE1 be paralleled for higher current output?
Paralleling is not recommended. The device lacks built-in current-sharing circuitry, and mismatched dropout voltages between units will cause uneven load distribution-potentially overloading one regulator while underutilizing others. For >1.5 A requirements, select a higher-current LDO or redesign with a switching solution.
What thermal resistance values apply to the TO-263-3 package of AZ1086S-1.8TRE1?
The junction-to-case thermal resistance (θJC) is 7.22 °C/W, and junction-to-ambient (θJA) is 60 °C/W with standard 1-inch² 2-oz copper pad. Effective heatsinking requires soldering the exposed output pad directly to a large copper pour; adding thermal vias improves θJA by up to 20 °C/W in multilayer boards.
AZ1086S-1.8TRE1 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):
- 15V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.5V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (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
AZ1086S-1.8TRE1 FAQ
1.How can I place an order for AZ1086S-1.8TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1086S-1.8TRE1 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 AZ1086S-1.8TRE1 reliable?
The price and inventory of AZ1086S-1.8TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1086S-1.8TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1086S-1.8TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1086S-1.8TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1086S-1.8TRE1?
AZ1086S-1.8TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1086S-1.8TRE1 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 AZ1086S-1.8TRE1?
For technical support, including AZ1086S-1.8TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1086S-1.8TRE1 requirements.
6.How does Aetrix verify that AZ1086S-1.8TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1086S-1.8TRE1 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 AZ1086S-1.8TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1086S-1.8TRE1?
All AZ1086S-1.8TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1086S-1.8TRE1, 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 AZ1086S-1.8TRE1 part is unused and in its original packaging.
Return procedure for AZ1086S-1.8TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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