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Diodes Incorporated AZ1117ID-1.8TRG1
- Part No.:
- AZ1117ID-1.8TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1117ID-1.8TRG1.pdf
- Description:
- IC REG LINEAR 1.8V 1A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,582
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Product details
Overview
AZ1117ID-1.8TRG1 from Diodes Incorporated is a fixed-output 1.8 V low-dropout linear regulator in TO252-2 package, delivering up to 1.35 A with ±1% output voltage accuracy, 1.3 V typical dropout at 0.8 A, and integrated thermal shutdown. It serves as a primary post-regulator for FPGA core supplies, USB peripheral power rails, and industrial microcontroller I/O domains requiring stable low-voltage bias under transient load.
For engineers reviewing the AZ1117ID-1.8TRG1 datasheet, AZ1117ID-1.8TRG1 pinout, AZ1117ID-1.8TRG1 application, or AZ1117ID-1.8TRG1 equivalent, key selection criteria include dropout voltage at 1 A, PSRR at 120 Hz, thermal resistance (θJA = 100 °C/W), RMS output noise (0.003% of VOUT), and compatibility with ceramic capacitors down to 10 µF.
Technical Context
The AZ1117ID-1.8TRG1 uses an internal trimmed bandgap reference and PNP pass transistor architecture to maintain regulation across -40°C to +125°C junction temperature. Its current-limit circuit triggers at 1.35 A (typ), and thermal shutdown activates at +160°C with +16°C hysteresis.
It operates with input voltages up to 15 V and requires only a 10 µF low-ESR ceramic capacitor on the output. The device achieves 70 dB PSRR at 120 Hz with 22 µF output capacitance and exhibits 0.5% temperature stability over full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V ±1% - ensures stable core logic supply for 1.8 V I/O standards without external feedback network |
| Dropout Voltage | 1.3 V (max) at 0.8 A - enables operation from 3.1 V input, critical for battery-powered systems with aging cells |
| PSRR | 70 dB at 120 Hz - suppresses ripple from upstream switching converters feeding sensitive analog or RF subsystems |
| RMS Output Noise | 0.003% of VOUT (10 Hz–10 kHz) - delivers clean bias for precision ADC references and PLL VCO supplies |
| Thermal Shutdown | +160°C activation with +16°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking |
| Quiescent Current | 6 mA (max) - minimizes standby power loss in always-on industrial control modules |
| Operating Junction Temp | -40°C to +125°C - supports deployment in automotive engine compartments and industrial motor drives |
Pinout & Package
TO252-2 (Type CJ) package with exposed thermal pad for enhanced heat dissipation; θJA = 100 °C/W (no heatsink), θJC = 10 °C/W; RoHS-compliant matte tin plating; moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Unregulated input supply connection | Accepts 3.1 V to 15 V; must be decoupled with ≥10 µF ceramic capacitor near pin |
| 2 (OUTPUT) | Regulated 1.8 V output node | Drives load up to 1.35 A; requires ≥10 µF low-ESR ceramic output capacitor (ESR < 20 Ω) |
| 3 (GND) | Ground reference and thermal path | Connected to PCB ground plane and thermal pad; critical for thermal performance and noise rejection |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.8 V output | Eliminates external resistor divider, reducing BOM count and layout area for space-constrained PCBs |
| Low-noise regulation | 0.003% RMS output noise enables direct powering of high-resolution SAR ADCs without additional LDO filtering |
| Ceramic capacitor compatible | Stable with 10 µF X5R/X7R ceramics - avoids costly tantalum or electrolytic capacitors and improves reliability |
| Industrial temperature range | -40°C to +125°C operation supports deployment in DIN-rail PLCs, outdoor telecom equipment, and factory automation nodes |
| Thermal protection | Integrated shutdown + hysteresis prevents thermal runaway during short-circuit or ambient temperature excursions |
Applications
| USB Peripheral Power | FPGA Core Supply |
|---|---|
|
Use Scenario: Powering USB 2.0 hub controllers and PHY transceivers on add-on cards. IC Role / Device Role / Timing Role: Primary 1.8 V rail generator for USB interface logic and serializer/deserializer blocks. Use Value: 70 dB PSRR rejects switching noise from upstream DC/DC converters, preventing bit errors in high-speed data links. |
Use Scenario: Delivering clean 1.8 V to FPGA I/O banks interfacing with DDR3 memory subsystems. IC Role / Device Role / Timing Role: Low-noise post-regulator stabilizing I/O voltage for timing-critical parallel bus interfaces. Use Value: 0.003% RMS noise ensures <1 ps jitter contribution to clock distribution networks tied to I/O banks. |
| Industrial Sensor Node | PCB-Mounted MCU Domain |
|
Use Scenario: Biasing 1.8 V analog front-end amplifiers and sigma-delta ADCs in wireless sensor transmitters. IC Role / Device Role / Timing Role: Precision voltage source for signal conditioning chain requiring minimal offset drift. Use Value: ±1% output accuracy and 0.5% temperature stability maintain measurement linearity across -40°C to +85°C ambient. |
Use Scenario: Supplying 1.8 V to ARM Cortex-M4 microcontrollers and associated flash memory in embedded control modules. IC Role / Device Role / Timing Role: Main system regulator enabling low-power sleep modes with 6 mA quiescent current. Use Value: Thermal shutdown and current limit protect against latch-up events during firmware update or ESD transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/MB | 250 mA max output, 6 µA quiescent current, SOT23-5 package | Targeted at ultra-low-power sensor nodes, not suitable for >500 mA loads | Select when standby current dominates design priority and load current ≤ 250 mA |
| TLV70118DBVR | 150 mA max output, 30 µA IQ, 1.8 V fixed, SOT23-5 | Optimized for battery longevity in wearables; lacks thermal shutdown and current limit | Choose only for sub-150 mA applications where thermal robustness is secondary to IQ |
Compared with MCP1700T-1802E/MB and TLV70118DBVR, the AZ1117ID-1.8TRG1 provides 5.4× higher output current, integrated thermal protection, and 1.3 V dropout-making it the sole viable option for industrial 1.8 V rails demanding >1 A continuous delivery and fault resilience.
Availability
AZ1117ID-1.8TRG1 is available at Aetrix Electronics and suitable for USB peripheral power, FPGA I/O domain regulation, and industrial sensor node biasing requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AZ1117ID-1.8TRG1 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 automotive markets.
The AZ1117I series targets cost-sensitive, thermally demanding applications requiring robust LDO performance across -40°C to +125°C-designed specifically for PC motherboards, add-on cards, and industrial control boards needing fixed-output simplicity and thermal resilience.
FAQ
What is the minimum input voltage required for stable 1.8 V output at 1 A load?
The AZ1117ID-1.8TRG1 requires VIN ≥ VOUT + VDROP. At 1 A, maximum dropout is 1.4 V (per datasheet, TO252-2). Thus, minimum input is 3.2 V. For reliable margin, use ≥3.5 V input to accommodate line tolerance and PCB drop.
Can this device replace the AZ1117IH-1.8TRG1 in existing SOT223 designs?
No-AZ1117ID-1.8TRG1 uses TO252-2 package (θJA = 100 °C/W), while AZ1117IH-1.8TRG1 uses SOT223 (θJA = 125 °C/W). Pinout is identical, but thermal pad layout, solder stencil, and PCB footprint differ. Direct replacement requires board revision.
Is an input capacitor mandatory, and what value is recommended?
Yes-an input capacitor is mandatory for stability and transient response. Diodes recommends ≥10 µF low-ESR ceramic (X5R/X7R) placed within 5 mm of INPUT and GND pins. Larger values (e.g., 22 µF) improve ripple rejection at low frequencies.
Does the device require a minimum load current to maintain regulation?
Yes-the AZ1117ID-1.8TRG1 specifies a minimum load current of 1.7 mA (typ) at +25°C. Below this, output voltage may rise slightly above nominal. For zero-load applications, add a 1 kΩ bleed resistor (1.8 mA) from OUTPUT to GND.
AZ1117ID-1.8TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117I
- 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (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
AZ1117ID-1.8TRG1 FAQ
1.How can I place an order for AZ1117ID-1.8TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117ID-1.8TRG1 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 AZ1117ID-1.8TRG1 reliable?
The price and inventory of AZ1117ID-1.8TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1117ID-1.8TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1117ID-1.8TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117ID-1.8TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117ID-1.8TRG1?
AZ1117ID-1.8TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117ID-1.8TRG1 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 AZ1117ID-1.8TRG1?
For technical support, including AZ1117ID-1.8TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117ID-1.8TRG1 requirements.
6.How does Aetrix verify that AZ1117ID-1.8TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1117ID-1.8TRG1 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 AZ1117ID-1.8TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1117ID-1.8TRG1?
All AZ1117ID-1.8TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117ID-1.8TRG1, 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 AZ1117ID-1.8TRG1 part is unused and in its original packaging.
Return procedure for AZ1117ID-1.8TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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