My Inquiry
My Account
Diodes Incorporated AZ1117H-3.3TRE1
- Part No.:
- AZ1117H-3.3TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AZ1117H-3.3TRE1.pdf
- Description:
- IC REG LINEAR 3.3V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:8,935
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AZ1117H-3.3TRE1 from Diodes Incorporated is a fixed-output 3.3V, 1A low-dropout linear regulator in SOT223 package, featuring 1.15V dropout at full load, ±1% output voltage accuracy over temperature, and integrated thermal shutdown and current limiting. It delivers stable power to microcontroller cores, DDR memory termination, and USB peripheral circuitry in space-constrained embedded systems.
For engineers reviewing the AZ1117H-3.3TRE1 datasheet, AZ1117H-3.3TRE1 pinout, AZ1117H-3.3TRE1 application, or AZ1117H-3.3TRE1 equivalent, key selection criteria include dropout voltage at 1A, thermal resistance (θJA = 120°C/W), output accuracy across –40°C to +125°C, and SOT223 lead-free package compatibility with reflow soldering profiles.
Technical Context
The AZ1117H-3.3TRE1 uses a trimmed bandgap reference and PNP pass transistor architecture to achieve tight output regulation without external compensation. Its internal current limit is factory-trimmed to 1.25–1.35A, and thermal shutdown activates at +150°C with +25°C hysteresis.
It operates across input voltages up to 15V and maintains ≤6 mV load regulation (10mA–1A) and ≤6 mV line regulation (1.5V ≤ VIN–VOUT ≤ 10V), supporting stable 3.3V rail generation from noisy or variable sources like switched-mode supply outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±1% (10mA–1A, –40°C to +125°C); ensures reliable logic-level compliance for 3.3V I/O interfaces. |
| Dropout Voltage | 1.15V at 1A; enables operation from 4.45V input, suitable for single-cell Li-ion or 5V SMPS post-regulation. |
| Current Limit | 1.25–1.35A; provides controlled short-circuit current and prevents damage during output faults. |
| Thermal Shutdown | Activates at +150°C junction temperature with +25°C hysteresis; protects die during sustained overload or poor heatsinking. |
| Ripple Rejection | 60–75dB at 120Hz; suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Quiescent Current | 5–10mA; minimizes no-load power loss in always-on subsystems such as real-time clock or standby logic rails. |
| Operating Temperature | –40°C to +125°C junction range; supports industrial and automotive under-hood applications without derating. |
Pinout & Package
SOT223 package: 4-pin thermally enhanced plastic surface-mount package with exposed thermal pad (pin 2 connected to GND). Pin 1 = OUTPUT, Pin 2 = GND, Pin 3 = INPUT, Pin 4 = GND (thermal tab).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (OUTPUT) | Regulated 3.3V output node | Delivers filtered, low-noise 3.3V to load; requires ≥10µF ceramic or tantalum output capacitor for stability. |
| Pin 2 (GND) | Ground reference and thermal path | Primary ground return and thermal conduction path to PCB copper; must be connected to large copper pour. |
| Pin 3 (INPUT) | Unregulated input supply connection | Accepts 4.45–15V input; requires ≥1µF ceramic input capacitor placed within 5mm of pin for transient immunity. |
| Pin 4 (GND / Thermal Tab) | Secondary ground and thermal interface | Exposed metal tab electrically tied to GND; critical for achieving θJA = 120°C/W; must be soldered to PCB thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 1.15V @ 1A enables use with marginal input margins-e.g., 5V rail with 5% tolerance still yields regulated 3.3V. |
| Factory-trimmed output accuracy | ±1% over temperature eliminates need for external calibration in precision 3.3V logic supply applications. |
| Integrated protection | Thermal shutdown + current limiting provide autonomous fault response without external circuitry. |
| Lead-free & RoHS-compliant | SOT223 package meets EU RoHS 2015/863/EU; compatible with Pb-free reflow profiles (peak 260°C). |
| High ripple rejection | ≥60dB at 120Hz allows clean 3.3V rail even when powered from noisy switcher outputs. |
Applications
| PC Motherboard Power | LCD Monitor Logic Supply |
|---|---|
Use Scenario: Providing clean 3.3V to PCIe slot logic, SMBus controllers, and BIOS flash memory on ATX motherboards. IC Role / Device Role / Timing Role: Primary 3.3V LDO for digital subsystems requiring low-noise, tightly regulated voltage independent of main VRM load transients. Use Value: Maintains <±1% output accuracy across –40°C to +125°C ambient, ensuring reliable boot and communication integrity during thermal cycling. |
Use Scenario: Powering timing controllers, LVDS transmitters, and display interface ICs in 24-bit RGB LCD panels. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering stable 3.3V to high-speed video interface circuitry sensitive to supply ripple. Use Value: 75dB PSRR at 120Hz suppresses switching artifacts from backlight inverters and DC/DC converters, preventing image noise. |
| Graphic Card GPU Auxiliary Rail | Industrial PLC I/O Module |
Use Scenario: Generating auxiliary 3.3V for GPU configuration EEPROMs, fan controllers, and sensor interfaces on discrete graphics cards. IC Role / Device Role / Timing Role: Secondary LDO decoupling GPU core voltage domain from management subsystems to prevent cross-talk. Use Value: 1.15V dropout allows direct derivation from 5V PCIe slot power-even under hot-plug conditions-without additional buck stages. |
Use Scenario: Supplying isolated 3.3V to ARM Cortex-M4-based I/O processors and CAN transceiver bias rails in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Industrial-grade LDO supporting extended temperature operation and long-term stability (0.3% drift over 1000hrs at 125°C). Use Value: Guaranteed operation from –40°C to +125°C junction temperature enables deployment in uncooled control cabinets near motors or drives. |
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 |
|---|---|---|---|
| MIC29302WU-3.3 | Higher dropout (0.4V typical at 3A), TO263-5 package, 0.5% initial accuracy | Better suited for high-current (>1.5A), low-dropout industrial supplies where thermal mass permits larger package | Select when >1A continuous load or tighter initial accuracy is required; not drop-in due to different pinout and higher quiescent current (15mA) |
| AP2202K-3.3 | Lower current rating (300mA), SOT23-5 package, no thermal shutdown, 2% accuracy | Targeted at ultra-low-power, cost-sensitive consumer devices-not rated for industrial temperature range | Choose only for battery-powered accessories with light loads; unsuitable for 1A or –40°C operation |
Compared with MIC29302WU-3.3 and AP2202K-3.3, the AZ1117H-3.3TRE1 uniquely balances 1A capability, ±1% accuracy over full temperature range, SOT223 thermal performance, and integrated protection-making it optimal for mainstream industrial and computing point-of-load designs where reliability and manufacturability are prioritized over ultra-low IQ or sub-0.5V dropout.
Availability
AZ1117H-3.3TRE1 is available at Aetrix Electronics and suitable for PC motherboard power delivery, LCD monitor logic supplies, and industrial PLC I/O modules requiring stable component supply with full industrial temperature support and RoHS compliance.
Supply support for AZ1117H-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 solutions for power management, signal integrity, and connectivity applications.
The AZ1117 series belongs to Diodes' precision linear regulator product line, designed specifically for cost-effective, thermally robust 3.3V/5V/adjustable power delivery in computing, display, and industrial control systems where simplicity and reliability outweigh ultra-low quiescent current requirements.
FAQ
What is the maximum input voltage for AZ1117H-3.3TRE1?
The absolute maximum input voltage is 20V, but the recommended operating condition limits VIN to ≤15V. Exceeding 15V risks exceeding the maximum power dissipation limit, especially at high ambient temperatures or without adequate PCB copper area for heat spreading. The device's thermal shutdown activates at +150°C junction temperature, providing protection against sustained overvoltage stress.
Does AZ1117H-3.3TRE1 require an external capacitor for stability?
Yes-AZ1117H-3.3TRE1 requires a minimum 10µF output capacitor (tantalum or ceramic) placed directly at the OUTPUT pin to ensure loop stability and transient response. An input capacitor of ≥1µF ceramic is also mandatory within 5mm of the INPUT pin to suppress high-frequency noise and prevent oscillation during load steps. The datasheet specifies ESR ranges for optimal performance.
Can AZ1117H-3.3TRE1 be used in parallel for higher current?
No-AZ1117H-3.3TRE1 is not designed for parallel operation. Its output voltage tolerance (±1%) and load regulation (≤10mV) cause current imbalance between units, leading to thermal runaway in one device. For >1A applications, select a higher-current LDO (e.g., AZ2085 series) or use a DC/DC converter instead.
Is AZ1117H-3.3TRE1 suitable for automotive applications?
While AZ1117H-3.3TRE1 operates across –40°C to +125°C and meets AEC-Q200 stress test recommendations for temperature cycling and humidity, it is not AEC-Q100 qualified. It is approved for industrial and computing applications; for automotive ECUs or infotainment systems requiring qualification, Diodes recommends the pin-compatible AZ1117C-3.3TRE1 variant, which undergoes full AEC-Q100 testing.
AZ1117H-3.3TRE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.25V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- -
- Protection Features:
- Thermal Shutdown
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
AZ1117H-3.3TRE1 FAQ
1.How can I place an order for AZ1117H-3.3TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117H-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 AZ1117H-3.3TRE1 reliable?
The price and inventory of AZ1117H-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 AZ1117H-3.3TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1117H-3.3TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117H-3.3TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117H-3.3TRE1?
AZ1117H-3.3TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117H-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 AZ1117H-3.3TRE1?
For technical support, including AZ1117H-3.3TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117H-3.3TRE1 requirements.
6.How does Aetrix verify that AZ1117H-3.3TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1117H-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 AZ1117H-3.3TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1117H-3.3TRE1?
All AZ1117H-3.3TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117H-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 AZ1117H-3.3TRE1 part is unused and in its original packaging.
Return procedure for AZ1117H-3.3TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AZ1117H-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
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…
