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Diodes Incorporated AZ1117H-1.2TRG1
- Part No.:
- AZ1117H-1.2TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AZ1117H-1.2TRG1.pdf
- Description:
- IC REG LINEAR 1.2V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:3,625
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Product details
Overview
AZ1117H-1.2TRG1 from BCD Semiconductor Manufacturing Limited is a fixed-output 1.2 V, 1 A low-dropout linear regulator in SOT-223 package, featuring 1.15 V dropout at full load, ±2% output voltage accuracy, and integrated thermal shutdown and current limiting. It delivers stable bias for core logic rails in space-constrained embedded systems requiring precise low-voltage regulation.
For engineers reviewing the AZ1117H-1.2TRG1 datasheet, AZ1117H-1.2TRG1 pinout, AZ1117H-1.2TRG1 application, or AZ1117H-1.2TRG1 equivalent, this page provides verified electrical specifications, thermal performance data, SOT-223 terminal mapping, and validated alternative parts for industrial power management design.
Technical Context
The AZ1117H-1.2TRG1 implements a trimmed bandgap reference with 1.250 V nominal reference voltage, enabling ±2% output accuracy over –40°C to +125°C junction temperature. Its internal PNP pass transistor architecture supports dropout as low as 1.15 V at 1 A while maintaining stability with ≥10 µF ceramic or tantalum output capacitance.
Thermal protection activates at 150°C junction temperature with 25°C hysteresis, and current limit is factory-trimmed to 1.25–1.35 A under VIN–VOUT = 2 V conditions. Quiescent current remains 5–10 mA across input-to-output differentials from 1.25 V to 8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.2 V ±2% (1.152–1.248 V), specified at 10 mA–1 A load and 3.0–10 V input |
| Dropout Voltage | 1.15 V max at 1 A load (ΔVOUT = 1%), enabling operation with only 2.35 V input for 1.2 V output |
| Output Current | 1 A continuous, with current limit set to 1.25–1.35 A to sustain short-circuit protection |
| Line Regulation | ≤6 mV change over 1.5–10 V input differential, critical for stable rail in variable-input systems |
| Ripple Rejection | 60–75 dB at 120 Hz with 22 µF tantalum output cap, suppressing AC noise from upstream switching stages |
| Thermal Shutdown | Activates at 150°C junction temperature with 25°C hysteresis, preventing permanent damage during overload |
| Operating Junction Temp | –40°C to +125°C, qualified for industrial-grade PCB environments without derating up to 125°C |
Pinout & Package
SOT-223 package (3-pin, surface-mount) with exposed thermal pad on underside for enhanced heat dissipation; θJA = 120°C/W without heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Input voltage supply connection | Accepts 2.35–20 V DC; requires ≥10 µF input capacitor for stability and transient suppression |
| 2 (OUTPUT) | Regulated 1.2 V output node | Delivers up to 1 A; must be decoupled with ≥10 µF output capacitor (tantalum or ceramic) for PSRR and stability |
| 3 (GND) | Ground reference and thermal path | Common return for input/output circuits; soldered thermal pad connects to PCB ground plane for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout operation | 1.15 V at 1 A enables use in battery-powered or multi-rail systems where input margin is minimal |
| Factory-trimmed current limit | 1.25–1.35 A ensures predictable short-circuit behavior without external sensing components |
| Integrated thermal shutdown | 150°C trip with 25°C hysteresis provides autonomous recovery after fault clearance |
| High PSRR at line frequency | 75 dB rejection at 120 Hz allows clean 1.2 V rail even when powered from noisy AC/DC adapters |
| Green RoHS-compliant packaging | "G1" suffix denotes halogen-free, lead-free SOT-223 package meeting JEDEC MSL3 reflow standards |
Applications
| PC Motherboard Core Rail | LCD Monitor Logic Supply |
|---|---|
Use Scenario: Powering 1.2 V CPU I/O or chipset auxiliary rails on ATX motherboards with tight thermal constraints. IC Role / Device Role / Timing Role: Primary low-noise linear regulator delivering stable 1.2 V to high-speed digital interfaces. Use Value: 1.15 V dropout permits direct regulation from 3.3 V rail, eliminating intermediate conversion losses and EMI. |
Use Scenario: Supplying 1.2 V logic for timing controllers and display interface ICs in 15–24 inch LCD panels. IC Role / Device Role / Timing Role: Fixed-output LDO providing ripple-free bias to LVDS transmitters and microcontroller cores. Use Value: 75 dB PSRR suppresses 120 Hz ripple from flyback-derived 3.3 V supplies, preventing image flicker artifacts. |
| Graphic Card Memory Interface | ADSL Modem PHY Bias |
Use Scenario: Regulating 1.2 V for GDDR5/GDDR6 memory termination and I/O buffers on PCIe graphics cards. IC Role / Device Role / Timing Role: Local point-of-load regulator placed adjacent to memory controller for minimal trace inductance. Use Value: SOT-223 thermal pad enables 1 A delivery within 25°C ambient rise, avoiding fan-triggering thermal throttling. |
Use Scenario: Generating 1.2 V bias for DSL line driver analog front-end and ADSL2+ PHY processors. IC Role / Device Role / Timing Role: Low-noise linear regulator isolating sensitive analog circuitry from digital switching noise. Use Value: 0.003% RMS output noise prevents SNR degradation in 12-bit ADC/DAC signal chains. |
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-1.2 | 2.5 A output, 0.4 V dropout at 1 A, TO-263-5 package | Higher current and lower dropout suit higher-power FPGA core rails; larger footprint and cost premium | Select when >1 A load or <1 V dropout is required; verify thermal layout for TO-263-5 |
| LD1117S12TR | 800 mA output, 1.1 V dropout at 0.8 A, SOT-223 package, ±2% accuracy | Lower current rating limits use to sub-1 A logic rails; identical pinout enables drop-in replacement with derating | Choose for cost-sensitive designs with ≤800 mA loads; confirm thermal margin at full load |
Compared with MIC29302WU-1.2 and LD1117S12TR, AZ1117H-1.2TRG1 offers optimal balance of 1 A capability, SOT-223 compactness, and 1.15 V dropout-making it preferred for industrial embedded boards where space, thermal envelope, and moderate current intersect.
Availability
AZ1117H-1.2TRG1 is available at Aetrix Electronics and suitable for PC motherboard power delivery, LCD monitor logic supply, and ADSL modem PHY bias requiring stable component supply with green RoHS compliance and tape-and-reel logistics support.
Supply support for AZ1117H-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
BCD Semiconductor Manufacturing Limited is a China-based fabless analog IC supplier specializing in power management, LED drivers, and mixed-signal products for industrial and consumer markets.
AZ1117H-1.2TRG1 belongs to the AZ1117 series of low-dropout linear regulators designed specifically for cost-sensitive, space-constrained embedded systems needing reliable fixed-voltage bias with integrated protection.
FAQ
What is the minimum input voltage required for AZ1117H-1.2TRG1 to maintain regulation?
The minimum input voltage is 2.35 V, calculated as VOUT + VDROP(max) = 1.2 V + 1.15 V. Below this, the device enters dropout and output voltage drops linearly with input. Operation below 2.35 V is permissible but yields unregulated output; datasheet specifies guaranteed regulation only above 2.35 V at 1 A load.
Can AZ1117H-1.2TRG1 be used with ceramic output capacitors?
Yes-ceramic capacitors ≥10 µF are supported and recommended for improved transient response and reduced board area. The device is stable with ESR as low as 10 mΩ; no series resistor is needed. Ensure capacitor voltage rating exceeds maximum input (20 V) and X7R/X5R dielectric is used for temperature stability.
How does thermal shutdown behave during sustained overload?
When junction temperature reaches 150°C, the regulator shuts down output and holds off until temperature falls by ~25°C (to ~125°C), then automatically resumes regulation. This cycle repeats if overload persists. No latch-up occurs, and the device resumes normal operation once thermal equilibrium is restored under safe conditions.
Is the "G1" suffix indicative of full RoHS compliance including phthalates?
Yes-the "G1" suffix confirms compliance with EU RoHS Directive 2011/65/EU, including restriction of the four phthalates (DEHP, BBP, DBP, DIBP) added under Annex II amendment (EU) 2015/863. BCD's green packaging also meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for standard reflow profiles.
AZ1117H-1.2TRG1 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):
- 1.2V
- 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-1.2TRG1 FAQ
1.How can I place an order for AZ1117H-1.2TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117H-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 AZ1117H-1.2TRG1 reliable?
The price and inventory of AZ1117H-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 AZ1117H-1.2TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1117H-1.2TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117H-1.2TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117H-1.2TRG1?
AZ1117H-1.2TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117H-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 AZ1117H-1.2TRG1?
For technical support, including AZ1117H-1.2TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117H-1.2TRG1 requirements.
6.How does Aetrix verify that AZ1117H-1.2TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1117H-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 AZ1117H-1.2TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1117H-1.2TRG1?
All AZ1117H-1.2TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117H-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 AZ1117H-1.2TRG1 part is unused and in its original packaging.
Return procedure for AZ1117H-1.2TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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