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Diodes Incorporated AZ1117EH-1.5TRG1
- Part No.:
- AZ1117EH-1.5TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AZ1117EH-1.5TRG1.pdf
- Description:
- IC REG LINEAR 1.5V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:4,786
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Product details
Overview
AZ1117EH-1.5TRG1 from Diodes Incorporated is a 1.5V fixed-output, 1.0A low-dropout linear regulator in SOT-223 package, featuring ±1% output voltage accuracy, 1.1V typical dropout at 1A, and integrated thermal shutdown and current limit protection. It delivers stable local regulation for power-sensitive circuits in LCD monitors, notebook motherboards, and set-top boxes.
For engineers reviewing the AZ1117EH-1.5TRG1 datasheet, AZ1117EH-1.5TRG1 pinout, AZ1117EH-1.5TRG1 application, or AZ1117EH-1.5TRG1 equivalent, key selection criteria include dropout voltage at full load, output accuracy over temperature, stability with low-ESR ceramic capacitors, and thermal performance in constrained PCB layouts.
Technical Context
The AZ1117EH-1.5TRG1 uses an internal trimmed bandgap reference to maintain 1.5V output within ±1% across -40°C to +125°C junction temperature. Its PNP pass transistor architecture enables low dropout while supporting fast transient response under dynamic load changes.
It operates with input voltages up to 13V and requires only 1.0µF ceramic input/output capacitors with ESR <1.5Ω. The device integrates overtemperature shutdown (trip at +170°C, 20°C hysteresis) and current limiting (~1.3A typical), eliminating external protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% (99–101% tolerance range at 10mA, -40°C to +125°C) |
| Max Output Current | 1.0A continuous; current limit activates at ~1.3A to prevent damage during overload |
| Dropout Voltage | 1.1V typical at 1.0A load; enables operation from 2.6V input for 1.5V rail generation |
| Line Regulation | 0.001%/V typical at 30mA; ensures <1.5mV output shift per volt input change |
| Load Regulation | 0.2%/A typical; maintains output within ±2mV across full 1mA–1A load range |
| Quiescent Current | 3.5mA typical; minimizes no-load power loss in always-on subsystems |
| PSRR | 70dB at 1kHz; suppresses ripple from upstream switching regulators feeding this LDO |
Pinout & Package
Supplied in the industry-standard SOT-223 package with exposed thermal pad (pin 2 connected to die attach paddle). Thermal resistance θJA = 65°C/W on 2oz FR-4 PCB with 8×0.5mm vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | ADJ/GND | Ground return path for fixed-output version; connects internally to output resistor divider |
| 2 | OUTPUT | Main regulated 1.5V output node; must connect to low-ESR ceramic capacitor (≥1.0µF) within 5mm |
| 3 | INPUT | Unregulated input supply (up to 13V); requires ≥1.0µF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Stable with low-ESR MLCCs | Guaranteed stability using ≥1.0µF ceramic capacitors with ESR <1.5Ω - eliminates need for tantalum or aluminum electrolytics |
| Thermal shutdown with hysteresis | Triggers at +170°C junction temperature and resets at +150°C, preventing thermal cycling in sustained overload |
| Low output noise | 3mVRMS (10Hz–100kHz); suitable for noise-sensitive analog rails like ADC references or RF bias supplies |
| High PSRR at low frequency | 70dB rejection of 1kHz ripple - critical when LDO follows buck converter with residual switching noise |
| RoHS/Green compliance | Fully lead-free, halogen- and antimony-free per EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition |
Applications
| TV & LCD Monitor Power Rails | Notebook Motherboard Core Logic |
|---|---|
|
Use Scenario: Providing clean 1.5V supply to DDR memory termination or panel timing controller ICs. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering stable voltage despite input ripple from main DC/DC converter. Use Value: ±1% accuracy and 0.2%/A load regulation ensure signal integrity and timing margin compliance across operating temperature. |
Use Scenario: Generating 1.5V for chipset I/O or PCIe interface logic on compact motherboard layouts. IC Role / Device Role / Timing Role: Low-noise, thermally robust LDO placed near high-speed logic to minimize voltage droop during burst activity. Use Value: 1.1V dropout allows use of 2.6V intermediate rail, reducing heat dissipation versus higher-input alternatives. |
| Set-Top Box SoC Peripherals | Industrial Display Controller |
|
Use Scenario: Powering HDMI PHY, USB transceivers, or audio codec interfaces requiring tightly regulated 1.5V. IC Role / Device Role / Timing Role: Final-stage regulator isolating sensitive peripherals from noisy system power domains. Use Value: 70dB PSRR attenuates switching noise from shared 3.3V rail, preventing bit errors or audio artifacts. |
Use Scenario: Supplying 1.5V to FPGA configuration I/O banks or industrial touchscreen controller ASICs. IC Role / Device Role / Timing Role: Industrial-grade LDO rated for -40°C to +125°C operation with overtemperature protection. Use Value: Integrated thermal shutdown and 1.3A current limit enable reliable operation in sealed enclosures without forced airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP1117E1521G-13 | Same 1.5V fixed output, ±2% accuracy (vs. ±1%), higher quiescent current (6mA vs. 3.5mA) | Limited to commercial temp range (-20°C to +85°C) vs. automotive-grade -40°C to +125°C | Acceptable for cost-sensitive consumer designs where tighter accuracy and extended temperature are not required |
| TLV1117-15CDCYR | 1.5V fixed, ±1% accuracy, but lower max current (800mA vs. 1.0A) and higher dropout (1.2V @ 800mA) | Smaller SOT-223 variant with reduced thermal mass; less suitable for sustained 1A loads in ambient >60°C | Preferred for space-constrained boards where peak current rarely exceeds 800mA and thermal headroom is adequate |
Compared with AP1117E1521G-13 and TLV1117-15CDCYR, the AZ1117EH-1.5TRG1 offers superior accuracy, wider temperature range, and higher current capability - making it optimal for industrial and embedded systems demanding long-term stability under thermal stress.
Availability
AZ1117EH-1.5TRG1 is available at Aetrix Electronics and suitable for TV power management, notebook motherboard design, and set-top box peripheral regulation requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for AZ1117EH-1.5TRG1 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.
The AZ1117E series was designed as a drop-in replacement for legacy low-dropout regulators, emphasizing precision output, thermal resilience, and compatibility with modern ceramic capacitors in space-constrained applications.
FAQ
What is the minimum input voltage required for stable 1.5V output at 1A load?
The AZ1117EH-1.5TRG1 requires VIN ≥ VOUT + VDROP = 1.5V + 1.1V = 2.6V minimum for full 1A operation. At lighter loads, dropout decreases - e.g., ~0.9V at 500mA - allowing lower input voltages while maintaining regulation.
Can this LDO be used with 0.68µF ceramic output capacitors?
No. The datasheet mandates ≥1.0µF output capacitance with ESR <1.5Ω. Using 0.68µF violates stability requirements and may cause oscillation; a 1.0µF X5R/X7R ceramic capacitor placed within 5mm of the OUTPUT pin is mandatory.
Does the AZ1117EH-1.5TRG1 require an external bypass capacitor on the ADJ/GND pin?
No. In fixed-output versions like the AZ1117EH-1.5TRG1, the ADJ/GND pin is internally connected to the feedback divider and serves solely as ground return. No external components are needed - it must be tied directly to the local ground plane.
How does thermal shutdown behave during continuous overload?
When junction temperature reaches +170°C, the device shuts down output and holds off until temperature drops by ~20°C (to ~+150°C) due to built-in hysteresis. This prevents rapid on/off cycling and allows safe cooldown before automatic recovery.
AZ1117EH-1.5TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117E
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 13V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (120Hz ~ 1kHz)
- 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
AZ1117EH-1.5TRG1 FAQ
1.How can I place an order for AZ1117EH-1.5TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117EH-1.5TRG1 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 AZ1117EH-1.5TRG1 reliable?
The price and inventory of AZ1117EH-1.5TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1117EH-1.5TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1117EH-1.5TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117EH-1.5TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117EH-1.5TRG1?
AZ1117EH-1.5TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117EH-1.5TRG1 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 AZ1117EH-1.5TRG1?
For technical support, including AZ1117EH-1.5TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117EH-1.5TRG1 requirements.
6.How does Aetrix verify that AZ1117EH-1.5TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1117EH-1.5TRG1 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 AZ1117EH-1.5TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1117EH-1.5TRG1?
All AZ1117EH-1.5TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117EH-1.5TRG1, 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 AZ1117EH-1.5TRG1 part is unused and in its original packaging.
Return procedure for AZ1117EH-1.5TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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