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Diodes Incorporated AZ1117T-5.0E1
- Part No.:
- AZ1117T-5.0E1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-220-3
- Datasheet:
-
AZ1117T-5.0E1.pdf
- Description:
- IC REG LINEAR 5V 1.25A TO220-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
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Product details
Overview
AZ1117T-5.0E1 from Diodes Incorporated is a fixed-output 5.0V, 1A low-dropout linear regulator in TO220-3 package, featuring 1.15V dropout at full load, ±1% output voltage accuracy over temperature, and integrated thermal shutdown and current limiting. It delivers stable power for motherboard VRMs, peripheral power rails, and industrial control logic requiring precise 5V supply under variable load and input conditions.
For engineers reviewing the AZ1117T-5.0E1 datasheet, AZ1117T-5.0E1 pinout, AZ1117T-5.0E1 application, or AZ1117T-5.0E1 equivalent, key selection criteria include dropout voltage at 1A, thermal resistance (θJA = 60°C/W), output voltage tolerance (±1%), junction temperature range (–40°C to +125°C), and TO220-3 mechanical compatibility with heatsink mounting.
Technical Context
The AZ1117T-5.0E1 uses a trimmed bandgap reference and PNP pass transistor architecture to maintain regulation with minimal headroom. Its internal current limit is factory-trimmed to 1.25–1.35A, and thermal shutdown activates at +150°C with +25°C hysteresis.
It operates across –40°C to +125°C junction temperature, supports input voltages up to 15V (recommended), and achieves 60–75dB ripple rejection at 120Hz with 22µF tantalum output capacitance - critical for noise-sensitive analog and digital subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±1% (10mA–1A load, –40°C to +125°C) - ensures TTL/CMOS logic compatibility and ADC reference stability. |
| Dropout Voltage | 1.15V at 1A - enables operation from 6.5V input while sustaining full-rated output, reducing heat dissipation vs. higher-dropout regulators. |
| Current Limit | 1.25–1.35A - provides controlled short-circuit protection without latch-up, supporting safe fault recovery in embedded systems. |
| Thermal Shutdown | Activates at +150°C junction, +25°C hysteresis - prevents permanent die damage during overload or poor heatsinking. |
| Ripple Rejection | 60–75dB at 120Hz - suppresses line-frequency noise from unregulated DC supplies feeding sensitive analog circuitry. |
| Quiescent Current | 5–10mA - minimizes no-load power loss in always-on subsystems such as real-time clocks or wake-on-LAN circuits. |
| Operating Junction Temp | –40°C to +125°C - validated for industrial motor drives, telecom line cards, and automotive body-control modules. |
Pinout & Package
TO220-3 package with exposed tab (electrically connected to GND), through-hole mounting, and heatsink-compatible backside metal. Pin 1 = INPUT, Pin 2 = OUTPUT, Pin 3 = GND (tab).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Unregulated DC input | Accepts 6.5–15V input; requires ≥10µF ceramic or tantalum input capacitor for stability and transient response. |
| 2 (OUTPUT) | Regulated 5.0V output | Delivers up to 1A; requires ≥22µF low-ESR output capacitor (tantalum or aluminum polymer) for loop stability and PSRR. |
| 3 (GND) | Ground reference & thermal path | Common return for input/output; tab serves as primary thermal conduction path to heatsink (θJC = 10°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 1.15V @ 1A enables use with 6.5V input rails - reduces power loss by >30% vs. legacy 7805-style regulators. |
| Output voltage accuracy | ±1% over –40°C to +125°C ensures reliable 5V logic interface without external trimming or calibration. |
| Integrated protection | Factory-trimmed current limit + thermal shutdown eliminate need for external foldback or thermal sensors. |
| Lead-free & RoHS-compliant | Fully compliant with EU RoHS 2015/863/EU; no intentionally added lead, halogen- and antimony-free packaging. |
| Multiple package options | TO220-3 variant supports high-power dissipation (up to 1.5W with 10°C/W heatsink) and mechanical robustness in industrial PCBs. |
Applications
| PC Motherboard Power | LCD Monitor Logic Supply |
|---|---|
Use Scenario: Providing clean 5V rail to chipset I/O buffers, SMBus controllers, and fan speed regulators on ATX motherboards. IC Role / Device Role / Timing Role: Primary post-regulation LDO for low-noise digital subsystems, replacing switching converters where EMI must be minimized. Use Value: 75dB ripple rejection and <0.003% RMS output noise prevent timing jitter in PCIe clock distribution and USB PHY signaling. |
Use Scenario: Powering microcontroller, OSD processor, and LVDS transmitter ICs in 24-bit color LCD panels. IC Role / Device Role / Timing Role: Fixed-voltage local regulator delivering stable 5V to display timing controllers with tight VDD tolerance. Use Value: ±1% output accuracy over temperature maintains consistent gamma correction and avoids image banding under ambient thermal cycling. |
| Industrial PLC I/O Module | Network Interface Card (NIC) |
Use Scenario: Supplying isolated 5V logic power to digital input conditioning circuits and optocoupler drivers in DIN-rail PLCs. IC Role / Device Role / Timing Role: Robust front-end regulator handling wide-input transients (e.g., 24VDC field bus surges) with fast thermal recovery. Use Value: +150°C thermal shutdown with +25°C hysteresis prevents lockup during sustained overloads in unventilated enclosures. |
Use Scenario: Generating 5V for Ethernet PHYs, MAC controllers, and EEPROMs in enterprise-grade NICs with PoE support. IC Role / Device Role / Timing Role: Secondary LDO decoupling switch-mode supply noise before reaching high-speed SerDes interfaces. Use Value: 1.15V dropout allows direct regulation from 6.5V intermediate bus, eliminating extra buck stage and improving BOM efficiency. |
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 |
|---|---|---|---|
| MIC29302WU-5.0 | Higher dropout (0.4V typical @ 3A, but 1.3V @ 1A); wider input range (4–26V); lower quiescent current (100µA). | Better suited for battery-powered systems needing ultra-low IQ; less optimal for 6.5V input due to higher dropout at 1A. | Select when input voltage exceeds 12V or standby current is critical; verify thermal design for TO220 footprint. |
| LD1085V50 | 1.5A rating; 1.3V dropout @ 1A; ±2% output tolerance; no guaranteed 125°C operation in TO220. | Higher current headroom but looser voltage spec; not qualified for full industrial temp range per datasheet. | Choose only if 1.5A peak load is required and ±2% tolerance is acceptable; confirm thermal derating above 85°C ambient. |
Compared with MIC29302WU-5.0 and LD1085V50, the AZ1117T-5.0E1 offers tighter output accuracy (±1% vs. ±2%), guaranteed operation to +125°C, and lower dropout at 1A - making it preferred for thermally constrained industrial and telecom designs where voltage stability is non-negotiable.
Availability
AZ1117T-5.0E1 is available at Aetrix Electronics and suitable for PC motherboard power delivery, LCD monitor logic supply, and industrial PLC I/O modules requiring stable component supply with long-term lifecycle assurance.
Supply support for AZ1117T-5.0E1 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 for power management, signal integrity, and connectivity applications.
The AZ1117 series belongs to Diodes' precision linear regulator product line, designed specifically for cost-sensitive, high-reliability industrial and computing applications demanding tight voltage tolerance and robust thermal protection.
FAQ
What is the maximum input voltage for continuous operation?
The AZ1117T-5.0E1 has a recommended maximum input voltage of 15V per its operating conditions table. While absolute maximum rating is 20V, sustained operation above 15V risks exceeding thermal limits due to increased power dissipation - especially at high ambient temperatures or without adequate heatsinking.
Can this regulator be used without an output capacitor?
No. The datasheet mandates a minimum 22µF low-ESR output capacitor (tantalum or aluminum polymer) for stability. Omitting it causes oscillation and output voltage overshoot during load transients, potentially damaging downstream logic. Ceramic capacitors alone are insufficient due to insufficient ESR.
Is the TO220-3 package electrically isolated?
No. In the AZ1117T-5.0E1, the metal tab is internally connected to Pin 3 (GND). Electrical isolation requires insulating hardware (e.g., shoulder washer, mica pad) and non-conductive heatsink compound when mounting to a grounded chassis.
How does thermal shutdown behave during overload?
When junction temperature reaches +150°C, the regulator shuts down output and holds off until temperature drops by ~25°C (hysteresis). Recovery is automatic - no reset signal needed. During repeated cycling, average output current is limited to ~300mA in still air with no heatsink, per thermal resistance (θJA = 60°C/W) and ambient constraints.
AZ1117T-5.0E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AZ1117
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.25V @ 1A
- Current - Output:
- 1.25A
- 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:
- Through Hole
- Supplier Device Package:
- TO-220-3
AZ1117T-5.0E1 FAQ
1.How can I place an order for AZ1117T-5.0E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ1117T-5.0E1 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 AZ1117T-5.0E1 reliable?
The price and inventory of AZ1117T-5.0E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ1117T-5.0E1 is usually 5 days.
3.What payment methods are accepted for AZ1117T-5.0E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ1117T-5.0E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ1117T-5.0E1?
AZ1117T-5.0E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ1117T-5.0E1 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 AZ1117T-5.0E1?
For technical support, including AZ1117T-5.0E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ1117T-5.0E1 requirements.
6.How does Aetrix verify that AZ1117T-5.0E1 is sourced from the original manufacturer or authorized distributors?
All AZ1117T-5.0E1 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 AZ1117T-5.0E1 meets industry standards.
7.What is the process for return or replacement of AZ1117T-5.0E1?
All AZ1117T-5.0E1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ1117T-5.0E1, 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 AZ1117T-5.0E1 part is unused and in its original packaging.
Return procedure for AZ1117T-5.0E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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