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Diodes Incorporated AZ1117D-1.2TRE1
- Part No.:
- AZ1117D-1.2TRE1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1117D-1.2TRE1.pdf
- Description:
- IC REG LINEAR 1.2V 1A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:7,391
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Product details
Overview
AZ1117D-1.2TRE1 from Diodes Incorporated is a fixed-output 1.2 V, 1 A low-dropout linear regulator in TO252-2 (3) 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 in PC motherboards, LCD monitors, and telecom equipment where input-to-output differential is constrained.
For engineers reviewing the AZ1117D-1.2TRE1 datasheet, AZ1117D-1.2TRE1 pinout, AZ1117D-1.2TRE1 application, or AZ1117D-1.2TRE1 equivalent, key selection criteria include dropout voltage at 1 A, thermal resistance (θJA = 100°C/W), load regulation (≤10 mV), quiescent current (5–10 mA), and RoHS-compliant lead-free packaging.
Technical Context
The AZ1117D-1.2TRE1 uses a trimmed bandgap reference to maintain 1.2 V output within ±2% tolerance across –40°C to +125°C junction temperature. Its internal current limit is factory-trimmed to 1.25–1.35 A, ensuring predictable short-circuit behavior without external components.
Thermal shutdown activates at +150°C with +25°C hysteresis, and the device operates with input voltages up to 15 V. Dropout voltage remains ≤1.25 V across 0.1–1.0 A output current, enabling use in 3.3 V or 5 V rail post-regulation where headroom is limited.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.2 V ±2% - ensures stable core supply for low-voltage ASICs and FPGAs requiring tight initial accuracy |
| Max Output Current | 1 A - supports single-rail power delivery for mid-power digital subsystems |
| Dropout Voltage | 1.15 V at 1 A - enables operation from 3.3 V input down to 2.35 V output, critical for battery-backed or margin-constrained rails |
| Line Regulation | ≤6 mV - limits output variation when input fluctuates, e.g., due to upstream switching noise or ripple |
| Load Regulation | ≤10 mV - maintains voltage stability across 10 mA to 1 A load steps, essential for dynamic digital loads |
| Quiescent Current | 5–10 mA - balances low-noise LDO performance with standby power efficiency |
| Ripple Rejection | 60–75 dB at 120 Hz - suppresses low-frequency switching artifacts from DC/DC converters feeding the LDO input |
Pinout & Package
TO252-2 (3) surface-mount package with exposed thermal pad (pin 2), optimized for PCB heat dissipation without heatsink. Pin 1: INPUT; Pin 2: OUTPUT; Pin 3: GND (case-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | INPUT | Unregulated input supply connection; must be decoupled with ≥10 µF ceramic/tantalum capacitor |
| Pin 2 | OUTPUT | Regulated 1.2 V output; connects directly to load and requires ≥22 µF output capacitance for stability |
| Pin 3 | GND | Power ground and thermal reference; tied to large copper pour for θJA = 100°C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 1.15 V at 1 A enables use with minimal input–output differential, reducing power loss and heat generation |
| Factory-trimmed current limit | 1.25–1.35 A provides consistent short-circuit protection without external sensing resistors |
| On-chip thermal shutdown | +150°C trip with +25°C hysteresis prevents permanent damage during sustained overload or high ambient conditions |
| RoHS-compliant lead-free construction | Meets EU Directive 2015/863/EU; no intentionally added lead, halogen- and antimony-free per Diodes Inc. Green standard |
| Stable with ceramic output capacitors | Compatible with low-ESR ceramics (≥22 µF), eliminating need for tantalum and reducing BOM cost and footprint |
Applications
| PC Motherboard Power | LCD Monitor Bias |
|---|---|
Use Scenario: Supplies 1.2 V core voltage to CPU I/O or chipset logic on ATX mainboards with 3.3 V auxiliary rail. IC Role / Device Role / Timing Role: Post-regulator converting noisy or marginally regulated 3.3 V to clean, low-noise 1.2 V for sensitive digital interfaces. Use Value: 75 dB ripple rejection suppresses switching noise from upstream buck converters, preventing timing jitter in PCIe or DDR clock domains. | Use Scenario: Powers TCON (timing controller) and panel driver ICs in 24-bit RGB LCD modules. IC Role / Device Role / Timing Role: Primary 1.2 V bias source for display interface logic requiring stable voltage under variable backlight load. Use Value: ≤10 mV load regulation ensures consistent gamma correction and color fidelity during rapid brightness transitions. |
| Telecom Line Card | ADSL Modem PHY |
Use Scenario: Delivers 1.2 V to FPGA configuration logic and SerDes transceivers on carrier-grade line cards. IC Role / Device Role / Timing Role: Local point-of-load regulator isolated from shared 3.3 V backplane, minimizing cross-talk between data and control planes. Use Value: Thermal shutdown + hysteresis prevents latch-up during hot-swap events or transient overloads in NEBS-compliant systems. | Use Scenario: Provides 1.2 V supply to ADSL2+ analog front-end (AFE) and DSP cores in residential gateways. IC Role / Device Role / Timing Role: Low-noise analog-domain regulator decoupling mixed-signal sections from digital switching noise. Use Value: 0.003% RMS output noise preserves SNR in 12-bit ADCs and high-fidelity line drivers. |
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 |
|---|---|---|---|
| MCP1700T-1202E/TT | 250 mA max output, 6 µA quiescent current, SOT23-3 package | Lower current capacity; suited for ultra-low-power microcontrollers, not 1 A loads | Select only for space-constrained, low-IQ designs where 1 A capability is unnecessary |
| TLV1117-12CDCYR | 1 A output, 1.2 V fixed, but 1.2 V accuracy ±1% and higher PSRR (80 dB) | Superior noise rejection and tighter tolerance; requires larger 100 µF output cap for stability | Prefer for high-precision analog or RF subsystems where 0.5% output drift is unacceptable |
Compared with MCP1700T-1202E/TT and TLV1117-12CDCYR, the AZ1117D-1.2TRE1 offers balanced 1 A capability, proven thermal robustness in TO252, and cost-effective compatibility with standard 22 µF ceramic output caps-making it optimal for mainstream digital power delivery where reliability and manufacturability outweigh ultra-low IQ or sub-1% tolerance needs.
Availability
AZ1117D-1.2TRE1 is available at Aetrix Electronics and suitable for PC motherboard power, LCD monitor bias, and telecom line card applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AZ1117D-1.2TRE1 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 manufacturer specializing in discrete, analog, and mixed-signal devices, with emphasis on power management, signal integrity, and protection solutions.
The AZ1117 series targets cost-sensitive, high-volume linear regulation applications in computing, consumer, and communications infrastructure-designed for ease of use, thermal resilience, and broad package compatibility.
FAQ
What is the minimum input voltage required for AZ1117D-1.2TRE1 to regulate at full 1 A?
The minimum input voltage is 2.35 V, calculated as VOUT + VDROP(MAX) = 1.2 V + 1.15 V. At 1 A load and 25°C, regulation is guaranteed down to this level; derating is required above 85°C ambient due to thermal resistance limitations in the TO252-2 (3) package.
Can AZ1117D-1.2TRE1 be used with ceramic output capacitors?
Yes-unlike older LDOs, the AZ1117D-1.2TRE1 is stable with low-ESR ceramic capacitors ≥22 µF. The datasheet explicitly validates stability with 22 µF tantalum and equivalent ceramics, eliminating need for series ESR resistors or tantalum-only designs.
Does AZ1117D-1.2TRE1 require an external bypass capacitor on the adjust pin?
No-the AZ1117D-1.2TRE1 is a fixed-output variant with internal voltage divider; it has no ADJ pin. Only the AZ1117-ADJ version requires external resistors and optional bypass capacitors on the adjust terminal.
Is AZ1117D-1.2TRE1 suitable for automotive applications?
No-it is rated for –40°C to +125°C operating junction temperature but lacks AEC-Q100 qualification, automotive-specific reliability testing, or PPAP documentation. For automotive use, Diodes recommends the pin-compatible AZ1117C or AZ1117I series, explicitly qualified to AEC-Q100 Grade 2.
AZ1117D-1.2TRE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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:
- TO-252-3
AZ1117D-1.2TRE1 FAQ
1.How can I place an order for AZ1117D-1.2TRE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117D-1.2TRE1 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 AZ1117D-1.2TRE1 reliable?
The price and inventory of AZ1117D-1.2TRE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1117D-1.2TRE1 is usually 5 days.
3.What payment methods are accepted for AZ1117D-1.2TRE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117D-1.2TRE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117D-1.2TRE1?
AZ1117D-1.2TRE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117D-1.2TRE1 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 AZ1117D-1.2TRE1?
For technical support, including AZ1117D-1.2TRE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117D-1.2TRE1 requirements.
6.How does Aetrix verify that AZ1117D-1.2TRE1 is sourced from the original manufacturer or authorized distributors?
All AZ1117D-1.2TRE1 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 AZ1117D-1.2TRE1 meets industry standards.
7.What is the process for return or replacement of AZ1117D-1.2TRE1?
All AZ1117D-1.2TRE1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117D-1.2TRE1, 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 AZ1117D-1.2TRE1 part is unused and in its original packaging.
Return procedure for AZ1117D-1.2TRE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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