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Diodes Incorporated AZ1117EH-1.2TRG1
- Part No.:
- AZ1117EH-1.2TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AZ1117EH-1.2TRG1.pdf
- Description:
- IC REG LINEAR 1.2V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:2,746
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Product details
Overview
AZ1117EH-1.2TRG1 from Diodes Incorporated is a 1.2V fixed-output, 1.0A low-dropout linear regulator in SOT-223 package, featuring ±1% output voltage accuracy (96–104% of nominal), 1.1V typical dropout at 1A, and integrated thermal shutdown and current limit protection. It delivers stable local regulation for low-voltage logic rails in space-constrained consumer electronics.
For engineers reviewing the AZ1117EH-1.2TRG1 datasheet, AZ1117EH-1.2TRG1 pinout, AZ1117EH-1.2TRG1 application, or AZ1117EH-1.2TRG1 equivalent, key selection criteria include dropout voltage under full load, output accuracy across temperature, stability with low-ESR ceramic capacitors, and thermal performance in SOT-223 PCB layouts.
Technical Context
The AZ1117EH-1.2TRG1 uses an internal trimmed bandgap reference to maintain output voltage accuracy within ±1% over -40°C to +125°C junction temperature. Its quiescent current remains stable at 3.5mA (typ.) across load and input conditions, enabling predictable power budgeting in always-on subsystems.
Designed for transient-sensitive low-voltage systems, it achieves 0.001%/V line regulation (typ.) and 0.2%/A load regulation (typ.), and supports stable operation with 1.0µF ceramic input/output capacitors having ESR <1.5Ω - eliminating need for electrolytic or tantalum alternatives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.2V fixed, ±1% tolerance (96–104% of nominal) ensures reliable core voltage for 1.2V I/O or logic rails |
| Max Output Current | 1.0A continuous, with 1.3A typical current limit enables robust supply for FPGA I/O banks or microcontroller peripherals |
| Dropout Voltage | 1.1V typical at 1A load allows operation from 2.3V input - critical for single-cell Li-ion or 3.3V rail derivation |
| PSRR | 70dB at 1kHz suppresses switching noise from upstream DC/DC converters feeding sensitive analog or RF sections |
| Thermal Shutdown | Activates at +170°C with +20°C hysteresis prevents latch-up during sustained overload or poor heatsinking |
| Quiescent Current | 3.5mA typical enables low-power standby modes without compromising regulation integrity |
| Operating Junction Temp | -40°C to +125°C supports deployment in industrial enclosures and automotive cabin environments |
Pinout & Package
Supplied in industry-standard SOT-223 package with exposed thermal pad (pin 2 connected to die attach paddle). Thermal resistance θJA = 65°C/W on 2-layer FR-4 PCB with 8×0.5mm vias to inner ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | ADJ/GND | Ground return path for regulator feedback loop; must be low-impedance connection to minimize noise coupling into reference node |
| 2 | OUTPUT | Main regulated output terminal; connects directly to load and output capacitor; requires shortest possible trace to reduce inductance |
| 3 | INPUT | Unregulated input supply; must be decoupled with ≥1.0µF ceramic capacitor placed within 3mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Stable with Low-ESR MLCC | Guaranteed stability using 1.0µF ceramic capacitors (ESR <1.5Ω), eliminating bulkier, less reliable alternatives |
| Trimmed Bandgap Reference | Ensures ±1% output accuracy across temperature and load - critical for precision analog sensor interfaces |
| Integrated Protection | Combines current limit (1.3A typ.) and thermal shutdown (+170°C) to prevent damage during fault conditions |
| Low Output Noise | 0.003V RMS (10Hz–100kHz) minimizes interference in audio codec or ADC reference supplies |
| Green Compliance | Fully RoHS 3 compliant, halogen- and antimony-free per Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| TV Power Management | LCD Monitor Logic Rails |
|---|---|
|
Use Scenario: Local 1.2V supply for HDMI receiver ICs and display controller I/O buffers in flat-panel TVs. IC Role / Device Role / Timing Role: Primary low-noise LDO delivering clean core voltage to high-speed serial interface circuitry. Use Value: 70dB PSRR rejects noise from main 12V-to-3.3V DC/DC converter, preventing bit errors in TMDS lanes. |
Use Scenario: Regulated 1.2V rail for LVDS transmitter ASICs and timing controller logic in LCD monitor mainboards. IC Role / Device Role / Timing Role: Fixed-output LDO providing stable voltage to timing-critical digital blocks with tight VDD tolerance. Use Value: ±1% output accuracy ensures consistent setup/hold margins across operating temperature range (-20°C to +70°C). |
| Notebook System Agent | STB SoC I/O Supply |
|
Use Scenario: Dedicated 1.2V supply for Intel Platform Controller Hub (PCH) or AMD FCH system agent logic. IC Role / Device Role / Timing Role: Secondary LDO supporting low-power always-on domains requiring fast transient response. Use Value: 0.2%/A load regulation maintains voltage within 2.4mV deviation during CPU wake/sleep transitions. |
Use Scenario: 1.2V rail for set-top box SoC I/O pads interfacing with HDMI, USB, and PCIe peripherals. IC Role / Device Role / Timing Role: Local point-of-load regulator isolating SoC I/O from noisy shared 3.3V system rail. Use Value: 1.1V dropout enables direct derivation from 2.5V intermediate rail, reducing thermal stress vs. higher-dropout alternatives. |
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 |
|---|---|---|---|
| AP1117E12G-13 | Same 1.2V fixed output, but ±2% accuracy (vs. ±1%) and 1.2V dropout at 1A (vs. 1.1V) | Lacks guaranteed stability with 1.0µF ceramic output cap; requires ≥10µF tantalum for stability | Acceptable where cost sensitivity outweighs precision and capacitor footprint constraints |
| TLV1117-12CDCYR | 1.2V fixed, ±1% accuracy, but 1.2V dropout at 800mA (not rated at 1A); IQ = 5mA (vs. 3.5mA) | Specified only up to +125°C ambient (not junction); no thermal hysteresis spec | Suitable for lower-current applications (<800mA) where TI's qualification pedigree is required |
Compared with AP1117E12G-13 and TLV1117-12CDCYR, the AZ1117EH-1.2TRG1 offers tighter output accuracy, lower dropout at full load, and verified ceramic-capacitor stability - making it optimal for compact, thermally constrained 1.2V point-of-load designs.
Availability
AZ1117EH-1.2TRG1 is available at Aetrix Electronics and suitable for TV power management, LCD monitor logic rails, notebook system agent supplies, and STB SoC I/O requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for AZ1117EH-1.2TRG1 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 consumer, industrial, and computing markets.
The AZ1117E series targets cost-sensitive, space-constrained applications needing precise, low-noise local regulation - particularly in displays, computing peripherals, and digital entertainment equipment.
FAQ
What is the minimum input voltage required for stable 1.2V output at 1A load?
The AZ1117EH-1.2TRG1 requires VIN ≥ VOUT + VDROP = 1.2V + 1.1V = 2.3V minimum for stable 1A operation. At lower loads, dropout decreases - e.g., ~0.9V at 500mA - allowing marginally lower input voltages in partial-load scenarios.
Can this LDO operate with only ceramic capacitors, and what ESR limits apply?
Yes - it is explicitly characterized for stability with 1.0µF ceramic input and output capacitors. The output capacitor ESR must be below 1.5Ω; values near 0Ω (typical for X5R/X7R MLCCs) are acceptable and recommended for lowest noise and best transient response.
Does the 1.2V version include internal feedback resistors, or is external adjustment needed?
The AZ1117EH-1.2TRG1 is a fixed-output variant with internal resistor divider - no external components are required for regulation. Pin 1 (ADJ/GND) serves solely as ground return; it is not adjustable and must be connected directly to system ground.
How does thermal shutdown behave during sustained overload, and is hysteresis specified?
Thermal shutdown activates at +170°C junction temperature and includes +20°C hysteresis, meaning the device resumes regulation only after cooling to ≤+150°C. This prevents rapid cycling during marginal thermal conditions and ensures safe cooldown before restart.
AZ1117EH-1.2TRG1 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):
- 1.2V
- 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-1.2TRG1 FAQ
1.How can I place an order for AZ1117EH-1.2TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117EH-1.2TRG1 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-1.2TRG1 reliable?
The price and inventory of AZ1117EH-1.2TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1117EH-1.2TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1117EH-1.2TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117EH-1.2TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117EH-1.2TRG1?
AZ1117EH-1.2TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117EH-1.2TRG1 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-1.2TRG1?
For technical support, including AZ1117EH-1.2TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117EH-1.2TRG1 requirements.
6.How does Aetrix verify that AZ1117EH-1.2TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1117EH-1.2TRG1 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-1.2TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1117EH-1.2TRG1?
All AZ1117EH-1.2TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117EH-1.2TRG1, 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-1.2TRG1 part is unused and in its original packaging.
Return procedure for AZ1117EH-1.2TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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