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Diodes Incorporated AZ1117CH-1.5TRG1
- Part No.:
- AZ1117CH-1.5TRG1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AZ1117CH-1.5TRG1.pdf
- Description:
- IC REG LINEAR 1.5V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:3,694
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Product details
Overview
AZ1117CH-1.5TRG1 from Diodes Incorporated is a fixed-output 1.5V low-dropout linear regulator with ±1% output voltage accuracy, 1.35A typical current limit, and thermal shutdown protection. It operates across -20°C to +125°C junction temperature, supports ceramic output capacitors down to 10µF/ESR <20Ω, and delivers 70dB PSRR at 120Hz for noise-sensitive USB and motherboard power rails.
For engineers reviewing the AZ1117CH-1.5TRG1 datasheet, AZ1117CH-1.5TRG1 pinout, AZ1117CH-1.5TRG1 application, or AZ1117CH-1.5TRG1 equivalent, key selection criteria include dropout voltage (1.3V typ @ 0.8A in TO252), quiescent current (≤6mA), RMS output noise (0.003% of VOUT), and compatibility with low-ESR ceramic capacitors in SOT223 packaging.
Technical Context
The AZ1117CH-1.5TRG1 integrates a trimmed bandgap reference for ±1% output accuracy and on-chip thermal shutdown triggered at +160°C with +16°C hysteresis. Its architecture uses internal current limiting (1.35A typ) and dropout optimization for minimal VIN–VOUT differential under load.
It requires no external components for fixed 1.5V operation, supports input voltages up to 15V, and maintains stable regulation with output capacitance as low as 10µF (ceramic, ESR <20Ω). The device is specified for operation across -20°C to +125°C junction temperature with θJC = 15°C/W in SOT223 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% (1.485–1.515V min/max), enabling precise core logic rail generation |
| Dropout Voltage | 1.3V typical at 0.8A load (SOT223), allowing operation with only 2.8V input for 1.5V output |
| Current Limit | 1.35A typical, providing short-circuit protection without external foldback circuitry |
| PSRR | 70dB at 120Hz, suppressing ripple from upstream switching converters in mixed-signal systems |
| Output Noise | 0.003% of VOUT (10Hz–10kHz), critical for analog sensor and ADC reference supplies |
| Quiescent Current | Max 6mA, minimizing standby power loss in always-on embedded subsystems |
| Thermal Shutdown | Activates at +160°C junction temperature with +16°C hysteresis, preventing permanent damage during overload |
Pinout & Package
The AZ1117CH-1.5TRG1 is packaged in SOT223 (H package), a surface-mount 4-pin thermally enhanced outline with exposed thermal pad. Pin 1 is INPUT, Pin 2 is OUTPUT, Pin 3 is GND, and Pin 4 is the exposed thermal tab (electrically connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (INPUT) | Regulator input supply connection | Accepts 2.8V–15V DC; must be decoupled with ≥10µF ceramic capacitor near pin |
| Pin 2 (OUTPUT) | Stabilized 1.5V output node | Drives load up to 1.35A; requires ≥10µF low-ESR ceramic capacitor for stability |
| Pin 3 (GND) | Reference and return path for internal circuitry | Low-impedance ground connection essential for noise rejection and thermal performance |
| Pin 4 (Thermal Tab) | Exposed copper pad (GND-connected) | Serves as primary heat dissipation path; must be soldered to ≥100mm² PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| ±1% output voltage accuracy | Ensures reliable operation of 1.5V I/O interfaces and low-voltage logic without calibration |
| Compatible with low-ESR ceramic capacitors | Eliminates need for electrolytic or tantalum capacitors, reducing board area and improving reliability |
| On-chip thermal shutdown with hysteresis | Prevents thermal runaway during sustained overload while enabling automatic recovery after cooldown |
| 70dB PSRR at 120Hz | Enables clean 1.5V supply directly downstream of noisy AC/DC or DC/DC converters |
| 1.35A current limit | Provides robust short-circuit protection without requiring external current-sense resistors |
Applications
| USB Peripheral Power | PC Motherboard I/O Rail |
|---|---|
Use Scenario: Powering USB 2.0 hub controllers and PHY transceivers requiring stable 1.5V auxiliary supply. IC Role / Device Role / Timing Role: Primary LDO supplying VDDIO for USB interface ICs with tight noise and transient response requirements. Use Value: 0.003% RMS output noise and 70dB PSRR prevent bit errors and signal integrity degradation in high-speed data links. | Use Scenario: Generating 1.5V termination voltage for DDR memory interfaces on desktop and server motherboards. IC Role / Device Role / Timing Role: Fixed-output LDO delivering low-noise, thermally robust bias for memory bus termination networks. Use Value: ±1% accuracy and -20°C to +125°C operation ensure consistent impedance matching across environmental extremes. |
| Add-on Card Core Logic | DVD Player System-on-Chip Supply |
Use Scenario: Providing regulated 1.5V to FPGA configuration logic, PCIe endpoint buffers, and management controllers on expansion cards. IC Role / Device Role / Timing Role: Local point-of-load regulator replacing higher-cost switching solutions where EMI constraints prohibit inductors. Use Value: 1.3V dropout enables use with 2.8V intermediate bus, reducing system-level conversion stages and BOM count. | Use Scenario: Supplying 1.5V core voltage to MPEG decoder SoCs and audio DSPs in consumer DVD playback units. IC Role / Device Role / Timing Role: Main LDO for digital baseband processing blocks requiring low quiescent current and thermal resilience. Use Value: Max 6mA IQ and +125°C rated operation support fanless thermal design and extended product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC29150-1.5WT | Higher dropout (1.5V @ 1.5A), 1.5A guaranteed current limit, TO220 package | Better thermal performance at >1A continuous load but larger footprint and higher minimum input voltage | Select when >1A sustained current or heatsink mounting is required; not suitable for space-constrained SMT designs |
| AP1117-1.5L-13 | Same 1.5V output, ±2% accuracy, 1.2A current limit, SOT223 package | Lower cost but reduced output precision and current capability; no thermal hysteresis spec | Acceptable for non-critical 1.5V rails where ±2% tolerance and 1.2A peak are sufficient |
Compared with MIC29150-1.5WT and AP1117-1.5L-13, the AZ1117CH-1.5TRG1 offers superior output accuracy (±1% vs. ±2%), lower dropout (1.3V vs. 1.5V), and verified thermal hysteresis-making it optimal for compact, noise-sensitive, and thermally demanding 1.5V applications.
Availability
AZ1117CH-1.5TRG1 is available at Aetrix Electronics and suitable for USB peripheral power, PC motherboard I/O rails, add-on card core logic, and DVD player SoC supplies requiring stable component supply and long-term manufacturability.
Supply support for AZ1117CH-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 manufacturer specializing in discrete, analog, and mixed-signal devices, with emphasis on power management, signal integrity, and connectivity solutions.
The AZ1117C series is part of Diodes' precision linear regulator product line, designed specifically for low-noise, low-dropout power delivery in space-constrained and thermally demanding applications such as computing, consumer electronics, and industrial control.
FAQ
What is the minimum input voltage required for stable 1.5V output?
The AZ1117CH-1.5TRG1 requires a minimum input voltage of 2.8V to maintain regulation at full load (0.8A), based on its 1.3V typical dropout voltage. At light loads (<10mA), input can be as low as 1.6V, but system design must ensure worst-case dropout margin across temperature and process variation.
Can this regulator operate with a 4.7µF ceramic output capacitor?
No. The datasheet mandates a minimum 10µF ceramic output capacitor with ESR <20Ω for stability. Using 4.7µF risks oscillation and degraded transient response, especially under load steps. A 10µF X5R/X7R 0805 or 1206 ceramic capacitor is the validated minimum.
Is the thermal pad (Pin 4) electrically isolated or grounded?
The thermal pad (Pin 4) is internally connected to GND and must be soldered to a PCB copper pour tied to the system ground plane. It is not electrically isolated-using it as a floating thermal slug will compromise both thermal performance and electrical noise immunity.
Does this part support automotive qualification?
The AZ1117CH-1.5TRG1 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AZ1117CH-1.5TRG1-A) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening-but this standard part is intended for commercial/industrial use only.
AZ1117CH-1.5TRG1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117C
- 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 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:
- SOT-223-3
AZ1117CH-1.5TRG1 FAQ
1.How can I place an order for AZ1117CH-1.5TRG1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117CH-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 AZ1117CH-1.5TRG1 reliable?
The price and inventory of AZ1117CH-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 AZ1117CH-1.5TRG1 is usually 5 days.
3.What payment methods are accepted for AZ1117CH-1.5TRG1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117CH-1.5TRG1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117CH-1.5TRG1?
AZ1117CH-1.5TRG1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117CH-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 AZ1117CH-1.5TRG1?
For technical support, including AZ1117CH-1.5TRG1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117CH-1.5TRG1 requirements.
6.How does Aetrix verify that AZ1117CH-1.5TRG1 is sourced from the original manufacturer or authorized distributors?
All AZ1117CH-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 AZ1117CH-1.5TRG1 meets industry standards.
7.What is the process for return or replacement of AZ1117CH-1.5TRG1?
All AZ1117CH-1.5TRG1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117CH-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 AZ1117CH-1.5TRG1 part is unused and in its original packaging.
Return procedure for AZ1117CH-1.5TRG1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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