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Diodes Incorporated AZ1117CD-1.8TRG1
- Part No.:
- AZ1117CD-1.8TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AZ1117CD-1.8TRG1.pdf
- Description:
- IC REG LINEAR 1.8V 1A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:2,295
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Product details
Overview
AZ1117CD-1.8TRG1 from Diodes Incorporated is a fixed-output 1.8 V low-dropout linear regulator with ±1% output voltage accuracy, 1.35 A typical current limit, and thermal shutdown protection. It operates over -20°C to +125°C junction temperature and supports stable USB peripheral power delivery using ceramic output capacitors as low as 10 µF.
For engineers reviewing the AZ1117CD-1.8TRG1 datasheet, AZ1117CD-1.8TRG1 pinout, AZ1117CD-1.8TRG1 application, or AZ1117CD-1.8TRG1 equivalent, key selection criteria include dropout voltage (1.3 V typ. at 0.8 A), PSRR (70 dB at 120 Hz), RMS output noise (0.003% of VOUT), and compatibility with low-ESR ceramic capacitors (<20 Ω).
Technical Context
The AZ1117CD-1.8TRG1 integrates a trimmed bandgap reference and on-chip thermal shutdown circuitry, enabling precise 1.8 V regulation under transient load conditions. Its architecture supports fast line and load transient response without external compensation.
Designed for fixed-output operation, it eliminates external feedback resistors and uses internal trimming to maintain ±1% output accuracy across temperature and load. The TO252-2 (3) package provides low thermal resistance (θJC = 10 °C/W) for high-current DC/DC post-regulation in space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8 V ±1% - ensures stable core voltage for 1.8 V logic ICs and memory interfaces |
| Dropout Voltage | 1.3 V typ. at 0.8 A - enables operation from 3.1 V input, supporting single-cell Li-ion or 3.3 V rail post-regulation |
| Current Limit | 1.35 A typ. - protects downstream circuits during short-circuit or overload events |
| PSRR | 70 dB at 120 Hz - suppresses ripple from switching supply inputs, critical for noise-sensitive analog subsystems |
| RMS Output Noise | 0.003% of VOUT (10 Hz–10 kHz) - delivers clean power to RF transceivers and precision ADCs |
| Quiescent Current | 6 mA max - minimizes standby power loss in always-on embedded systems |
| Operating Junction Temp | -20°C to +125°C - supports industrial and automotive under-hood applications without derating |
Pinout & Package
Package: TO252-2 (3), surface-mount, thermally enhanced DPAK variant with exposed drain pad for improved heat dissipation (θJC = 10 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Regulator Input | Accepts unregulated DC input up to 15 V; requires ≥10 µF low-ESR ceramic capacitor |
| 2 (OUTPUT) | Regulated Output | Delivers stable 1.8 V; connects directly to load and output capacitor |
| 3 (GND) | Ground Reference | Common return path for input/output capacitors and load; must be low-impedance PCB plane |
Key Features
| Feature | Design Value |
|---|---|
| Thermal Shutdown Protection | Activates at +160°C junction temperature with +16°C hysteresis to prevent latch-up during sustained overload |
| Ceramic Capacitor Compatibility | Stable with ESR < 20 Ω - eliminates need for tantalum or electrolytic capacitors, reducing board area and cost |
| Line Regulation | ≤6 mV over 1.5 V ≤ VIN−VOUT ≤ 10 V - maintains tight output under varying input conditions (e.g., battery discharge) |
| Load Regulation | ≤15 mV from 10 mA to 800 mA - ensures consistent voltage across dynamic processor or FPGA core loads |
| Lead-Free & RoHS Compliance | Fully compliant per EU Directive 2015/863/EU - meets environmental requirements for global electronics manufacturing |
Applications
| USB Peripheral Power | Add-on Card Regulation |
|---|---|
Use Scenario: Powering USB 2.0 hubs, flash drives, and HID devices from 5 V bus or 3.3 V system rail. IC Role / Device Role / Timing Role: Primary LDO providing clean, regulated 1.8 V for USB PHY and controller I/O banks. Use Value: Low noise and high PSRR prevent data corruption during high-speed packet transmission. |
Use Scenario: Regulating 1.8 V supply for PCIe add-in cards, FPGA mezzanine modules, or memory expansion boards. IC Role / Device Role / Timing Role: Post-regulator delivering low-noise core voltage to high-speed interface logic. Use Value: Fast transient response maintains voltage stability during burst data transfers and link training. |
| DVD Player Logic Supply | PC Motherboard I/O Hub |
Use Scenario: Supplying 1.8 V to DVD drive controller ASICs, servo motor drivers, and optical pickup ICs. IC Role / Device Role / Timing Role: Dedicated LDO for digital signal processing and communication blocks within optical storage subsystems. Use Value: Thermal shutdown prevents damage during prolonged disc spin-up or mechanical stall conditions. |
Use Scenario: Providing 1.8 V bias to southbridge I/O interfaces, SMBus controllers, and embedded controller peripherals. IC Role / Device Role / Timing Role: Local regulation for low-voltage I/O domains requiring tight tolerance and low quiescent current. Use Value: ±1% output accuracy ensures reliable communication timing margins across temperature and aging. |
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/TT (Microchip) | 250 mA max output, 6 µA IQ, SOT23-5 package - lower current, ultra-low quiescent power | Suitable for battery-powered sensors or always-on wake-up circuits, not high-current loads | Select when standby current dominates design priority and load current stays below 250 mA |
| TLV70018QDDCR (TI) | 200 mA max, 30 µA IQ, 0.175 V dropout at 200 mA - lower dropout but limited current and thermal capability | Better for low-input-voltage scenarios (e.g., 2.0 V input), unsuitable for >300 mA continuous loads | Choose only for compact, low-power applications where 1.35 A capability is unnecessary |
Compared with MCP1700T-1802E/TT and TLV70018QDDCR, the AZ1117CD-1.8TRG1 uniquely balances high output current (1.35 A), robust thermal performance (TO252-2), and industrial-grade temperature range (-20°C to +125°C), making it optimal for sustained-load embedded power rails.
Availability
AZ1117CD-1.8TRG1 is available at Aetrix Electronics and suitable for USB peripheral power, PC motherboard I/O regulation, DVD player logic supply, and add-on card voltage conditioning requiring stable component supply across production lifecycles.
Supply support for AZ1117CD-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 and signal integrity solutions for industrial, computing, and consumer markets.
The AZ1117C series targets cost-sensitive, high-volume LDO applications demanding precision, thermal resilience, and ceramic capacitor compatibility - particularly in computing peripherals and embedded control systems.
FAQ
What is the minimum required output capacitance for stable operation?
The AZ1117CD-1.8TRG1 requires a minimum 10 µF ceramic output capacitor with ESR less than 20 Ω. This value ensures phase margin and transient stability across the full operating temperature and load range. Using smaller or higher-ESR capacitors may cause oscillation or excessive overshoot during load steps.
Can this device be used with an input voltage of 2.5 V?
No - the absolute minimum input voltage is determined by dropout: VIN ≥ VOUT + VDROP. With a typical dropout of 1.3 V at 0.8 A, 2.5 V input is insufficient to sustain 1.8 V output under load. Minimum recommended input is 3.1 V for full-rated current operation.
Does the TO252-2 (3) package require a heatsink for 1 A continuous operation?
At 1 A and ambient 25°C, the TO252-2 (3) package dissipates ~1.3 W (1 A × 1.3 V dropout). With θJA = 100 °C/W (no heatsink), junction rise is ~130°C - exceeding the +125°C max operating limit. A small copper pour (≥100 mm²) with 8 vias is required to meet thermal limits.
Is the AZ1117CD-1.8TRG1 qualified for automotive applications?
This specific part is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade variants (e.g., AZ1117CQ series) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening. For automotive use, contact Diodes directly for qualified alternatives.
AZ1117CD-1.8TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117C
- 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:
- -20°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
AZ1117CD-1.8TRG1 FAQ
1.How can I place an order for AZ1117CD-1.8TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117CD-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 AZ1117CD-1.8TRG1 reliable?
The price and inventory of AZ1117CD-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 AZ1117CD-1.8TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1117CD-1.8TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117CD-1.8TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117CD-1.8TRG1?
AZ1117CD-1.8TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117CD-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 AZ1117CD-1.8TRG1?
For technical support, including AZ1117CD-1.8TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117CD-1.8TRG1 requirements.
6.How does Aetrix verify that AZ1117CD-1.8TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1117CD-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 AZ1117CD-1.8TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1117CD-1.8TRG1?
All AZ1117CD-1.8TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117CD-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 AZ1117CD-1.8TRG1 part is unused and in its original packaging.
Return procedure for AZ1117CD-1.8TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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