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Diodes Incorporated AP1115AY25G-13
- Part No.:
- AP1115AY25G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115AY25G-13.pdf
- Description:
- IC REG LINEAR 2.5V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,204
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Product details
Overview
AP1115AY25G-13 from Diodes Incorporated is a 0.6A low-dropout positive voltage regulator in fixed 2.5V output mode, housed in a lead-free SOT89-3L package. It delivers stable regulation with ≤1.3V dropout at full load, supports input voltages up to 18V, and is designed for low-voltage IC supply applications including VGA card power rails and high-speed bus termination.
For engineers reviewing the AP1115AY25G-13 datasheet, AP1115AY25G-13 pinout, AP1115AY25G-13 application, or AP1115AY25G-13 equivalent, this page provides verified technical context, validated pin functions, confirmed fixed-output behavior (2.5V), thermal shutdown integration, and real-world use cases in PC peripherals and communication interfaces.
Technical Context
The AP1115AY25G-13 operates as a fixed-output LDO regulator with internal feedback network set for 2.5V output, eliminating external resistors. Its control architecture includes current-limit protection and thermal shutdown circuitry triggered at +150°C junction temperature.
It requires ≥4V input for stable 2.5V regulation under full 0.6A load, maintains ≤25mV load regulation across 0–0.6A, and achieves 60–70dB ripple rejection at 120Hz with 25µF tantalum output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.500V ±2% at 10mA, 4V ≤ VIN ≤ 12V - ensures precise logic-level supply for 2.5V I/O domains. |
| Dropout Voltage | 1.1V typical / 1.3V max at 0.6A - enables operation with only 3.8V minimum input for regulated 2.5V output. |
| Output Current | 0.6A continuous - sufficient for powering multiple low-power ICs on a single rail (e.g., VGA DAC, bus buffers). |
| Load Regulation | ≤25mV over 0–0.6A - minimizes voltage sag during dynamic current steps in peripheral circuits. |
| Ripple Rejection | 60–70dB at 120Hz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Shutdown | Activates at TJ ≥ +150°C - protects device and PCB during sustained overload or poor heatsinking. |
| Package | SOT89-3L with tab connected to VIN - provides thermal path via PCB copper while defining pinout as Pin1=Adj(GND), Pin2=VIN, Pin3=VOUT. |
Pinout & Package
SOT89-3L package with exposed tab thermally and electrically connected to VIN (Pin 2); footprint follows Diodes Inc. AP02001 recommended pad layout (2oz copper, FR-4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: Adj (GND) | Reference node / ground connection | Internally tied to GND in fixed-mode variants like AP1115AY25G-13; must be connected to system ground for stability. |
| Pin 2: VIN | Input supply terminal | Accepts 4–18V DC input; tab is electrically common with this pin - requires direct thermal connection to PCB copper pour. |
| Pin 3: VOUT | Regulated output terminal | Delivers fixed 2.5V; requires ≥10µF output capacitor (ESR 0.15–20Ω) placed within 18mm of pin for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.5V output | No external resistor network required - reduces BOM count and layout sensitivity in space-constrained VGA or peripheral designs. |
| Fast transient response | Stabilizes within <200µs after 0.6A load step - maintains clean supply during burst-mode data transfers in communication interfaces. |
| Integrated current limiting | Guaranteed >0.7A foldback limit - prevents catastrophic failure during short-circuit events without external sense resistors. |
| Lead-free & halogen-free | SOT89-3L package meets RoHS 2 (2011/65/EU) and "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb) - compliant for global industrial shipments. |
| Low quiescent current | Typical 5–10mA minimum load requirement - compatible with standby modes where downstream logic draws microampere-level leakage. |
Applications
| VGA Graphics Card Power | PCI/PCIe Peripheral Supply |
|---|---|
|
Use Scenario: Providing clean 2.5V bias for analog video DACs and digital timing buffers on legacy VGA add-in cards. IC Role / Device Role / Timing Role: Primary 2.5V LDO regulator supplying analog front-end and pixel clock circuitry. Use Value: ≤25mV load regulation ensures stable DAC reference voltage across varying pixel clock frequencies and resolution modes. |
Use Scenario: Delivering regulated 2.5V to PCI slot interface logic and configuration EEPROMs in embedded industrial controllers. IC Role / Device Role / Timing Role: Dedicated point-of-load regulator for PCI signaling voltage domain compliance. Use Value: 60–70dB ripple rejection isolates sensitive configuration memory from noisy main 5V/3.3V rails. |
| USB Hub Controller Bias | Legacy Communication Interface |
|
Use Scenario: Powering USB 2.0 hub controller ICs requiring tightly regulated 2.5V core voltage in desktop docking stations. IC Role / Device Role / Timing Role: Core voltage regulator enabling USB packet arbitration and PHY layer timing accuracy. Use Value: Fast transient response (<200µs) prevents voltage droop during simultaneous endpoint enumeration bursts. |
Use Scenario: Supplying 2.5V to RS-422/RS-485 transceiver bias networks in industrial serial gateways. IC Role / Device Role / Timing Role: Stable bias source for differential driver/receiver stages ensuring signal integrity over long cables. Use Value: ≤1.3V dropout allows use with 3.3V intermediate rail - simplifies multi-rail power tree in compact gateway PCBs. |
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 |
|---|---|---|---|
| AP2112K-2.5TRG1 | 0.6A fixed 2.5V LDO in SOT23-5; 0.45V dropout at 0.6A; no thermal shutdown. | Lower dropout enables 2.95V min input; smaller footprint but lacks thermal protection. | Select when input headroom is constrained below 3.8V and thermal fault tolerance is managed externally. |
| MCP1702T-2502E/MB | 0.25A fixed 2.5V LDO in SOT89-3; 0.6V dropout at 250mA; integrated thermal shutdown. | Lower current rating limits use to light loads; identical package and pinout compatibility with AP1115B variant. | Select when load current remains ≤250mA and board layout reuse of SOT89-3 footprint is critical. |
Compared with AP1115AY25G-13, AP2112K-2.5TRG1 offers lower dropout but sacrifices thermal safety, while MCP1702T-2502E/MB retains thermal protection and package compatibility at reduced current capacity - choice depends on input voltage margin and load profile.
Availability
AP1115AY25G-13 is available at Aetrix Electronics and suitable for VGA graphics card power, PCI peripheral supply, and legacy communication interface designs requiring stable component supply with known thermal and electrical behavior.
Supply support for AP1115AY25G-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The AP1115 series belongs to Diodes' standard LDO regulator product line, engineered specifically for cost-sensitive, space-constrained applications requiring reliable fixed- or adjustable-output regulation in consumer and industrial peripherals.
FAQ
Is AP1115AY25G-13 still in active production?
No - AP1115AY25G-13 is officially obsolete and discontinued by Diodes Incorporated as of April 2016. Aetrix Electronics holds remaining authorized inventory for legacy design support and repair programs, with full traceability and date-code documentation provided upon request.
What is the correct pinout configuration for AP1115AY25G-13?
AP1115AY25G-13 uses the AP1115B pinout: Pin 1 = Adj (GND), Pin 2 = VIN (tab-connected), Pin 3 = VOUT. This matches the "Y" suffix in the ordering code and is confirmed in the DS31026 Rev. 6-4 datasheet Figure 1 and Pin Descriptions section.
Can AP1115AY25G-13 be used with ceramic output capacitors?
Yes - the datasheet specifies ESR range 0.15–20Ω for stability; X5R/X7R ceramics with 10–22µF value and ≥1mΩ ESR (e.g., 1206 10µF/16V) meet this requirement. Avoid ultra-low-ESR types (<0.1Ω) unless compensated per Diodes' AP02001 layout guidelines.
Does AP1115AY25G-13 require an input capacitor?
Yes - a minimum 100µF aluminum or tantalum capacitor (ESR 0.15–20Ω) is required between VIN and GND, placed near the device, to prevent input voltage sag during load transients and ensure regulation under dynamic conditions per Typical Applications Circuit on page 2 of DS31026.
AP1115AY25G-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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 600mA
- Current - Output:
- 600mA
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (120Hz)
- 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
AP1115AY25G-13 FAQ
1.How can I place an order for AP1115AY25G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115AY25G-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 AP1115AY25G-13 reliable?
The price and inventory of AP1115AY25G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115AY25G-13 is usually 5 days.
3.What payment methods are accepted for AP1115AY25G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115AY25G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115AY25G-13?
AP1115AY25G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115AY25G-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 AP1115AY25G-13?
For technical support, including AP1115AY25G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115AY25G-13 requirements.
6.How does Aetrix verify that AP1115AY25G-13 is sourced from the original manufacturer or authorized distributors?
All AP1115AY25G-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 AP1115AY25G-13 meets industry standards.
7.What is the process for return or replacement of AP1115AY25G-13?
All AP1115AY25G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115AY25G-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 AP1115AY25G-13 part is unused and in its original packaging.
Return procedure for AP1115AY25G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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