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Diodes Incorporated AZ1117CR-1.5TRG1
- Part No.:
- AZ1117CR-1.5TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AZ1117CR-1.5TRG1.pdf
- Description:
- IC REG LINEAR 1.5V 1A SOT89
- Quantity:
- Payment:
- Shipping:
Inventory:4,644
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Product details
Overview
AZ1117CR-1.5TRG1 from Diodes Incorporated is a fixed-output 1.5V low-dropout linear regulator in SOT89 package, delivering up to 1.35A output current with ±1% output voltage accuracy, 1.3V typical dropout at 0.8A, and 70dB PSRR at 120Hz - used for stable local regulation in USB peripherals and PC add-on cards.
For engineers reviewing the AZ1117CR-1.5TRG1 datasheet, AZ1117CR-1.5TRG1 pinout, AZ1117CR-1.5TRG1 application, or AZ1117CR-1.5TRG1 equivalent, key selection criteria include dropout voltage at 800mA load, thermal shutdown threshold (+160°C), compatibility with low-ESR ceramic capacitors (<20Ω), minimum 10µF output capacitance requirement, and quiescent current ≤6mA under no-load conditions.
Technical Context
The AZ1117CR-1.5TRG1 integrates a trimmed bandgap reference and on-chip thermal shutdown circuitry, ensuring ±1% output accuracy over -20°C to +125°C junction temperature range and protection against excessive power dissipation. Its internal current-limit function caps output at 1.35A typical.
Designed for low-noise, high-transient-response applications, it achieves 0.003% RMS output noise (10Hz–10kHz) and maintains stable regulation with ceramic output capacitors as low as 10µF and ESR <20Ω - eliminating need for electrolytic or tantalum alternatives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% (1.470V to 1.530V), guaranteed across full -20°C to +125°C operating junction temperature range. |
| Dropout Voltage | 1.3V typical at IOUT = 0.8A (SOT89 package), enabling regulation from VIN ≥ 2.8V while maintaining output stability. |
| Output Current | 1.35A typical current limit, protecting downstream circuitry during short-circuit or overload events. |
| PSRR | 70dB at 120Hz with 22µF output capacitor, suppressing ripple from noisy DC-DC pre-regulators or shared supply rails. |
| Quiescent Current | Max 6mA at zero load, minimizing standby power loss in battery-backed or always-on subsystems. |
| RMS Output Noise | 0.003% of VOUT (i.e., 45µV RMS for 1.5V output) over 10Hz–10kHz bandwidth, critical for analog sensor or ADC reference supplies. |
| Thermal Shutdown | Activates at +160°C junction temperature with +16°C hysteresis, allowing safe recovery without external thermal management. |
Pinout & Package
Package: SOT89 (3-pin, single-gauge leadframe, standard JEDEC TO-243AA outline; 4.4mm × 2.9mm × 1.5mm body height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Tab) | Input (VIN) | Primary DC input connection; tab is electrically connected to Pin 1 and serves as thermal path to PCB copper pour. |
| 2 | Output (VOUT) | Regulated 1.5V output node; requires ≥10µF low-ESR ceramic capacitor to ground for stability. |
| 3 | Ground (GND) | Reference return for internal bandgap and error amplifier; must be low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout operation | 1.3V typical at 0.8A enables use with 3.3V or 5V rails where headroom is constrained. |
| Ceramic capacitor compatible | Stable with 10µF/ESR <20Ω output cap - eliminates cost, size, and reliability penalties of tantalum or aluminum electrolytics. |
| High PSRR at line frequency | 70dB rejection at 120Hz allows clean 1.5V rail generation directly from rectified AC or switching converter outputs. |
| Trimmed bandgap reference | ±1% output accuracy maintained over full -20°C to +125°C range without external calibration. |
| Integrated thermal protection | Auto-recovery shutdown at +160°C junction temperature prevents permanent damage during sustained overload or poor heatsinking. |
Applications
| USB Devices | Add-on Cards |
|---|---|
|
Use Scenario: Powering USB 2.0 hub controller ICs and associated level shifters from a 5V bus-derived supply. IC Role / Device Role / Timing Role: Local LDO providing clean, regulated 1.5V for USB PHY reference and core logic. Use Value: 0.003% RMS noise ensures jitter-free USB packet timing; 1.3V dropout permits direct regulation from 3.3V auxiliary rail. |
Use Scenario: Supplying FPGA I/O banks or PCIe endpoint logic requiring precise 1.5V termination voltage. IC Role / Device Role / Timing Role: Point-of-load regulator delivering stable 1.5V to high-speed interface circuitry. Use Value: 70dB PSRR suppresses switching noise from upstream DC-DC converters; ±1% accuracy meets PCIe 1.5V VTT tolerance. |
| DVD Players | PC Motherboards |
|
Use Scenario: Biasing laser diode driver and servo control ICs in optical pickup units. IC Role / Device Role / Timing Role: Low-noise 1.5V source for analog front-end amplifiers and DACs. Use Value: 45µV RMS noise prevents audible hiss or video artifacts; thermal shutdown protects against enclosure overheating. |
Use Scenario: Generating DDR memory VPP or chipset auxiliary rails on ATX mainboards. IC Role / Device Role / Timing Role: Secondary LDO supplying 1.5V to memory controller I/O buffers. Use Value: 1.35A current limit supports burst-mode memory access; SOT89 footprint enables compact layout near BGA packages. |
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-1502E/MB | 1.5V fixed, 250mA max output, 6µA quiescent current, SOT23-3 package. | Lower current capability and smaller thermal mass - suitable only for ultra-low-power microcontrollers, not USB or FPGA loads. | Select when system load <200mA and standby current is critical; not drop-in for AZ1117CR-1.5TRG1's 1.35A requirement. |
| TLV1117-15CDCYR | 1.5V fixed, 800mA max output, 1.2V dropout at 800mA, SOIC-8 package with thermal pad. | Higher thermal resistance (θJA = 125°C/W unmounted) vs. SOT89 (170°C/W); requires larger PCB copper area for same power dissipation. | Choose for legacy SOIC-compatible designs needing moderate current; verify thermal margin at 800mA continuous load. |
Compared with MCP1700T-1502E/MB and TLV1117-15CDCYR, the AZ1117CR-1.5TRG1 uniquely balances 1.35A output, SOT89 thermal performance, and 1.3V dropout - making it optimal for space-constrained, medium-current applications where ceramic capacitor compatibility and ±1% accuracy are mandatory.
Availability
AZ1117CR-1.5TRG1 is available at Aetrix Electronics and suitable for USB devices, PC add-on cards, and DVD player subsystems requiring stable component supply with full RoHS compliance and automotive-grade change control readiness.
Supply support for AZ1117CR-1.5TRG1 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 company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q200 standards.
The AZ1117C series targets cost-sensitive, high-volume power management applications in computing, consumer, and industrial systems - emphasizing low dropout, ceramic-capacitor compatibility, and robust thermal protection without external components.
FAQ
What is the minimum input voltage required for stable 1.5V output at 1A load?
The AZ1117CR-1.5TRG1 requires VIN ≥ VOUT + VDROP. At 1A load, typical dropout is 1.4V (per TO252 data; SOT89 is slightly higher), so minimum VIN is 2.9V. For guaranteed operation across temperature and process variation, design for VIN ≥ 3.0V to maintain regulation margin.
Can this device replace the LM1117-1.5 in existing designs?
Yes - AZ1117CR-1.5TRG1 shares identical pinout (SOT89), output voltage, and functional behavior with LM1117-1.5. Key improvements include tighter ±1% output tolerance (vs. ±2%), lower 0.003% RMS noise, and enhanced thermal shutdown hysteresis (+16°C), requiring no layout changes.
Is an input capacitor required, and what value is recommended?
An input capacitor is strongly recommended to suppress source impedance spikes. Diodes specifies 10µF tantalum or aluminum electrolytic; however, 4.7µF–10µF X5R/X7R ceramic with ≤100mΩ ESR is acceptable and improves transient response. Place within 5mm of Pin 1.
Does this part support adjustable output via external resistors?
No - AZ1117CR-1.5TRG1 is a fixed-output variant with internal resistor divider. For adjustable operation, use AZ1117CR-ADJTRG1 (SOT89) or AZ1117CH-ADJTRG1 (SOT223), which expose the ADJ pin and require two external resistors to set VOUT per VREF × (1 + R2/R1) + IADJ × R2.
AZ1117CR-1.5TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117C
- Package/Case:
- TO-243AA
- 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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:
- SOT-89-3
AZ1117CR-1.5TRG1 FAQ
1.How can I place an order for AZ1117CR-1.5TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117CR-1.5TRG1 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 AZ1117CR-1.5TRG1 reliable?
The price and inventory of AZ1117CR-1.5TRG1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1117CR-1.5TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1117CR-1.5TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117CR-1.5TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117CR-1.5TRG1?
AZ1117CR-1.5TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117CR-1.5TRG1 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 AZ1117CR-1.5TRG1?
For technical support, including AZ1117CR-1.5TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117CR-1.5TRG1 requirements.
6.How does Aetrix verify that AZ1117CR-1.5TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1117CR-1.5TRG1 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 AZ1117CR-1.5TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1117CR-1.5TRG1?
All AZ1117CR-1.5TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117CR-1.5TRG1, 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 AZ1117CR-1.5TRG1 part is unused and in its original packaging.
Return procedure for AZ1117CR-1.5TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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