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Diodes Incorporated AP1117Y15G-13
- Part No.:
- AP1117Y15G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1117Y15G-13.pdf
- Description:
- IC REG LINEAR 1.5V 1A SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,362
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Product details
Overview
AP1117Y15G-13 from Diodes Incorporated is a 1.5V fixed-output, 1A low-dropout linear regulator in SOT89-3 package, featuring ≤1.4V dropout at full load, ±1.5% output voltage accuracy over temperature and load, and built-in thermal shutdown and current limiting. It delivers stable 1.5V supply for low-power logic, bus termination, and VGA card power rails with 4.7µF minimum ceramic output capacitance.
For engineers reviewing the AP1117Y15G-13 datasheet, AP1117Y15G-13 pinout, AP1117Y15G-13 application, or AP1117Y15G-13 equivalent, this page provides verified technical context, real-world design meaning of specifications, validated pin functions, application-specific implementation guidance, and confirmed alternative parts with documented functional trade-offs.
Technical Context
The AP1117Y15G-13 implements a bandgap-referenced error amplifier driving an NPN pass transistor, enabling precise 1.5V regulation across 0°C to +125°C junction temperature. Its internal 1.25V reference and fixed resistor network eliminate external feedback components.
Dropout behavior is characterized at 1.3V typical (1.4V max) at 1A load, supporting operation from 3V input down to 1.5V output. Fast transient response is achieved via internal compensation optimized for 4.7µF–22µF MLCC or tantalum output capacitors with ESR ≤0.5Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.500V ±1.5% (guaranteed over 0°C–125°C, 0–1A load, 3V–12V input) |
| Max Dropout Voltage | 1.4V at 1A (ensures regulation with only 2.9V min input at full load) |
| Output Current | 1A continuous (with thermal derating above 73°C/W θJA in SOT89-3) |
| Line Regulation | ≤0.2% (input change from VOUT+1.5V to 12V causes ≤3mV output shift) |
| Load Regulation | ≤15mV (0–1A load step induces ≤15mV output deviation at 3V input) |
| Ripple Rejection | ≥60dB at 180Hz (attenuates 1V input ripple to ≤10mV output ripple) |
| Thermal Shutdown | Activates at ~150°C junction (protects against sustained overload or poor heatsinking) |
Pinout & Package
SOT89-3 package: 3-pin surface-mount, thermally enhanced plastic case with exposed tab connected to VOUT for improved heat dissipation. Pad layout requires ≥22mm² copper area per Diodes Inc. AP02001 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Adj (GND) | Ground terminal for fixed-mode operation; no external connection required |
| 2 | VOUT | Regulated 1.5V output; must connect ≥4.7µF ceramic capacitor (ESR ≤0.5Ω) directly to ground |
| 3 | VIN | Input supply (3V–12V); requires ≥4.7µF decoupling capacitor close to pin |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout | 1.4V max at 1A enables use with 3V input for 1.5V rail-critical for legacy 3.3V system down-conversion |
| Fast transient response | Stable under 100mA–1A load steps without external compensation-reduces need for bulk output capacitance |
| Built-in protection | Thermal shutdown + current limiting prevent damage during short-circuit or overheating-eliminates need for external foldback circuitry |
| MLCC-compatible | Stable with 4.7µF X7R ceramic (not Y5V)-enables compact, high-reliability designs vs. tantalum alternatives |
| Lead-free & green | RoHS-compliant, halogen/antimony-free packaging-meets IPC-1752A environmental compliance requirements |
Applications
| PC Peripheral Power | VGA Card Core Supply |
|---|---|
Use Scenario: Providing clean 1.5V bias to USB hub controllers and PCIe endpoint logic on add-in cards. IC Role / Device Role / Timing Role: Fixed-output LDO delivering noise-immune core voltage independent of host rail fluctuations. Use Value: 60dB ripple rejection suppresses switching noise from upstream DC/DC converters, preventing data corruption in high-speed interfaces. | Use Scenario: Powering GPU memory interface circuitry requiring tight 1.5V tolerance in desktop graphics cards. IC Role / Device Role / Timing Role: Primary 1.5V regulator for GDDR memory termination and I/O buffers. Use Value: ≤15mV load regulation ensures signal integrity across full memory bandwidth by minimizing VDD sag during burst accesses. |
| Low-Current Logic Rail | High-Speed Bus Termination |
Use Scenario: Generating 1.5V for FPGA configuration I/O banks and microcontroller peripherals in industrial HMIs. IC Role / Device Role / Timing Role: Point-of-load regulator for isolated logic domains with minimal quiescent current (5–10mA min load). Use Value: 1.25V internal reference and precision trimming enable ±1.5% output accuracy-meets JEDEC JESD8-12A level for 1.5V logic families. | Use Scenario: Supplying matched 1.5V termination voltage for DDR2/DDR3 address/control buses in embedded computing modules. IC Role / Device Role / Timing Role: Low-noise, fast-response voltage source for parallel bus stub termination networks. Use Value: 1.4V dropout allows direct derivation from 3.3V rail, eliminating intermediate conversion stages and reducing BOM count by one DC/DC converter. |
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 |
|---|---|---|---|
| LD1117S15TR | 1.5V fixed, 1A, SOT223 package; 1.2V dropout typ, but only rated 0°C–125°C (no industrial grade) | Lacks -40°C capability; higher θJA (107°C/W) reduces power handling in same PCB area | Prefer for cost-sensitive commercial designs where ambient stays >0°C and thermal margin exists |
| TLV1117-15CDCYR | 1.5V fixed, 800mA, SOT223; 1.2V dropout typ, 0.5% initial accuracy, but lower current rating | Insufficient for 1A loads; requires derating above 60°C ambient due to 800mA limit | Select when tighter initial accuracy (±0.5%) is prioritized over current capacity and industrial temp range |
Compared with LD1117S15TR and TLV1117-15CDCYR, AP1117Y15G-13 offers guaranteed -40°C to +125°C operation, 1A current with 1.4V dropout in compact SOT89-3, and RoHS/green compliance-making it optimal for industrial VGA cards and PC peripherals needing robust thermal performance and regulatory alignment.
Availability
AP1117Y15G-13 is available at Aetrix Electronics and suitable for PC peripheral power, VGA card core supply, and high-speed bus termination requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP1117Y15G-13 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 solutions, with emphasis on power management, signal integrity, and protection devices.
The AP1117 series belongs to Diodes' precision linear regulator product line, engineered specifically for low-noise, high-stability point-of-load regulation in computing, communications, and consumer electronics where dropout voltage and thermal resilience are critical.
FAQ
What is the minimum input voltage required for AP1117Y15G-13 to regulate at 1.5V output?
The device requires VIN ≥ VOUT + dropout voltage. With 1.4V maximum dropout at 1A, the absolute minimum input is 2.9V. However, for reliable operation across temperature and load, Diodes recommends VIN ≥ 3V-verified by load regulation tests at 3V input in the datasheet.
Can AP1117Y15G-13 be used with ceramic capacitors, and what ESR range is acceptable?
Yes-it is explicitly qualified for MLCC capacitors. The datasheet mandates output capacitance ≥4.7µF with ESR ≤0.5Ω; X7R dielectric is recommended, and Y5V is prohibited due to capacitance drift. Input capacitor also requires ≥4.7µF ceramic or tantalum with same ESR limit.
Does AP1117Y15G-13 require an external resistor divider for 1.5V output?
No. The "Y15" suffix denotes fixed 1.5V output; Pin 1 (Adj/GND) is internally connected to ground. No external resistors are needed-unlike the adjustable AP1117-ADJ variant which requires R1/R2 feedback network.
How does thermal performance differ between SOT89-3 and SOT223 packages for the same AP1117 part?
SOT89-3 has θJA = 164°C/W (FR-4, 2oz Cu), while SOT223 is 107°C/W under identical conditions. This means SOT89-3 dissipates less power before reaching 125°C junction-e.g., at 1A and 3V input, SOT89-3 reaches thermal limit at ~1.2W, whereas SOT223 supports ~1.8W before derating.
AP1117Y15G-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (180Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP1117Y15G-13 FAQ
1.How can I place an order for AP1117Y15G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1117Y15G-13 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 AP1117Y15G-13 reliable?
The price and inventory of AP1117Y15G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1117Y15G-13 is usually 5 days.
3.What payment methods are accepted for AP1117Y15G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1117Y15G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1117Y15G-13?
AP1117Y15G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1117Y15G-13 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 AP1117Y15G-13?
For technical support, including AP1117Y15G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1117Y15G-13 requirements.
6.How does Aetrix verify that AP1117Y15G-13 is sourced from the original manufacturer or authorized distributors?
All AP1117Y15G-13 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 AP1117Y15G-13 meets industry standards.
7.What is the process for return or replacement of AP1117Y15G-13?
All AP1117Y15G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1117Y15G-13, 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 AP1117Y15G-13 part is unused and in its original packaging.
Return procedure for AP1117Y15G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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