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Diodes Incorporated AP1115AYL-13
- Part No.:
- AP1115AYL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115AYL-13.pdf
- Description:
- IC REG LIN POS ADJ 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,893
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Product details
Overview
AP1115AYL-13 from Diodes Incorporated is a 0.6A low-dropout positive voltage regulator in fixed 3.3V 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 targets low-voltage IC supply applications including high-speed bus termination and VGA card power rails.
For engineers reviewing the AP1115AYL-13 datasheet, AP1115AYL-13 pinout, AP1115AYL-13 application, or AP1115AYL-13 equivalent, key selection factors include guaranteed 3.3V ±1% output accuracy at 10mA–600mA, thermal shutdown protection, fast transient response for logic supply stability, and compatibility with 100µF tantalum/low-ESR output capacitors.
Technical Context
The AP1115AYL-13 operates as a fixed-output linear regulator with internal reference (1.25V) and error amplifier driving a PNP pass transistor. Its architecture enables <1.3V dropout across the full 0–600mA load range while maintaining ±1% load regulation and 60–70dB ripple rejection at 120Hz.
It integrates current limiting and thermal shutdown circuitry, with junction-to-ambient thermal resistance of 164°C/W on standard FR-4 PCB layout. The device requires no external compensation and stabilizes with ≥10µF output capacitance (0.15–20Ω ESR).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300V ±1% at 10mA–600mA, ensuring logic-level compliance for 3.3V systems |
| Dropout Voltage | 1.1V typical / 1.3V max at 600mA, enabling operation with only 4.6V input for 3.3V output |
| Load Regulation | ≤33mV over 0–600mA, minimizing voltage sag during dynamic current steps |
| Ripple Rejection | 60–70dB at 120Hz, suppressing input supply noise from switching converters |
| Thermal Resistance θJA | 164°C/W (no heatsink, FR-4, 2oz Cu), defining maximum power dissipation before thermal shutdown |
| Quiescent Current | 5–10mA minimum load required for regulation, compatible with standby modes |
| Operating Junction Temp | 0°C to +125°C, supporting industrial ambient temperature requirements |
Pinout & Package
SOT89-3L package: 3-pin surface-mount outline with exposed tab (Pin 3), footprint per AP02001, RoHS-compliant and halogen-free "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: Adj (GND) | Ground reference / adjust node | Internally connected to GND in fixed-mode; used for resistor divider feedback in adjustable variants |
| Pin 2: VOUT | Regulated output | Delivers 3.3V output; requires ≥10µF capacitor (0.15–20Ω ESR) to ground for stability |
| Pin 3: VIN | Unregulated input | Accepts 4.8–18V DC; must remain ≥1.3V above VOUT to maintain regulation |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.3V output | Eliminates external feedback resistors, reducing BOM count and layout area |
| Fast transient response | Stabilizes within microseconds during load steps-critical for bus termination and logic supply integrity |
| Built-in thermal shutdown | Activates at +150°C junction temperature, preventing damage during overload or poor heatsinking |
| Output current limiting | Clamps output at ~0.7A, protecting both regulator and downstream circuitry during short-circuit events |
| Low-noise regulation | 60–70dB ripple rejection enables clean power delivery without additional LC filtering |
Applications
| PC Peripheral Power | VGA Card Logic Supply |
|---|---|
|
Use Scenario: Providing stable 3.3V rail to USB controllers, PCIe endpoint logic, and SMBus interfaces in desktop/laptop peripherals. IC Role / Device Role / Timing Role: Primary low-noise linear regulator supplying core logic voltage for communication interface ICs. Use Value: Maintains signal integrity by rejecting switching noise from upstream DC/DC converters and meeting ±1% tolerance for I/O voltage compliance. |
Use Scenario: Delivering regulated 3.3V to GPU memory buffers, display timing controllers, and DDC/CI circuitry on discrete graphics cards. IC Role / Device Role / Timing Role: Dedicated post-regulator for analog/digital hybrid sections requiring low ripple and fast transient recovery. Use Value: Enables reliable hot-plug detection and EDID communication by sustaining voltage during GPU clock gating and memory burst loads. |
| High-Speed Bus Termination | Industrial I/O Module Supply |
|
Use Scenario: Biasing parallel termination networks on LVDS, RSDS, or mini-SAS backplanes where precise voltage matching minimizes reflection. IC Role / Device Role / Timing Role: Precision voltage source setting termination reference level for differential signaling standards. Use Value: Achieves <±1% output accuracy and <33mV load regulation-ensuring impedance matching within 2% across full current range. |
Use Scenario: Powering isolated digital I/O ASICs and level translators in programmable logic controllers (PLCs) operating in 0–70°C ambient. IC Role / Device Role / Timing Role: Local point-of-load regulator for field-side logic, decoupled from noisy 24V system rails. Use Value: Withstands 18V input transients and maintains regulation down to 0°C, supporting extended industrial temperature operation without derating. |
Availability
AP1115AYL-13 is available at Aetrix Electronics and suitable for PC peripheral design, VGA card development, high-speed bus termination circuits, and industrial I/O module production requiring stable component supply despite end-of-life status.
Supply support for AP1115AYL-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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and communications markets.
The AP1115 belongs to Diodes' LDO regulator product line, engineered specifically for low-voltage, medium-current applications demanding tight output tolerance, low dropout, and robust thermal behavior in compact SMT packages.
FAQ
Is AP1115AYL-13 still in active production?
No-AP1115AYL-13 is officially obsolete and discontinued by Diodes Incorporated as of April 2016. Aetrix Electronics holds remaining authorized inventory with full traceability, but no new manufacturing or second-source options exist. Customers are advised to evaluate long-term design alternatives early.
What is the difference between AP1115A and AP1115B pinouts?
AP1115A uses Pin 1 = VOUT, Pin 2 = Adj(GND), Pin 3 = VIN; AP1115B swaps Pins 1 and 2: Pin 1 = Adj(GND), Pin 2 = VIN, Pin 3 = VOUT. AP1115AYL-13 is an AP1115A variant, confirmed by its marking code "JM" (3.3V fixed) and ordering suffix "A" in Diodes' documentation.
Can AP1115AYL-13 replace AP1117-3.3?
No-AP1115AYL-13 and AP1117-3.3 differ in dropout (1.3V vs 1.2V), thermal resistance (164°C/W vs 120°C/W), and pinout (SOT89-3 vs SOT223). AP1117-3.3 has higher current capability (1A) and different thermal pad connection. Direct replacement requires PCB redesign and validation.
What output capacitor is required for stability?
A minimum 10µF output capacitor with ESR between 0.15Ω and 20Ω is mandatory. Diodes recommends 100µF tantalum (as shown in typical application circuits) or low-ESR aluminum polymer capacitors. Ceramic capacitors alone are insufficient due to excessively low ESR causing instability.
AP1115AYL-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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 5V
- 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
AP1115AYL-13 FAQ
1.How can I place an order for AP1115AYL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115AYL-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 AP1115AYL-13 reliable?
The price and inventory of AP1115AYL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115AYL-13 is usually 5 days.
3.What payment methods are accepted for AP1115AYL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115AYL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115AYL-13?
AP1115AYL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115AYL-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 AP1115AYL-13?
For technical support, including AP1115AYL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115AYL-13 requirements.
6.How does Aetrix verify that AP1115AYL-13 is sourced from the original manufacturer or authorized distributors?
All AP1115AYL-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 AP1115AYL-13 meets industry standards.
7.What is the process for return or replacement of AP1115AYL-13?
All AP1115AYL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115AYL-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 AP1115AYL-13 part is unused and in its original packaging.
Return procedure for AP1115AYL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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