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Diodes Incorporated AP1115AY30G-13
- Part No.:
- AP1115AY30G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115AY30G-13.pdf
- Description:
- IC REG LINEAR 3V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,985
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Product details
Overview
AP1115AY30G-13 from Diodes Incorporated is a 0.6A low-dropout positive voltage regulator in fixed 3.3V output mode, housed in a SOT89-3L package. It delivers stable regulation with ≤1.3V dropout at full load, supports input up to 18V, and targets low-voltage IC supply applications including high-speed bus termination and VGA card power rails.
For engineers reviewing the AP1115AY30G-13 datasheet, AP1115AY30G-13 pinout, AP1115AY30G-13 application, or AP1115AY30G-13 equivalent, this page provides verified electrical parameters, thermal behavior, fixed-output configuration details, and design-critical stability requirements for 3.3V/0.6A systems operating under transient load conditions.
Technical Context
The AP1115AY30G-13 operates as a fixed-output linear regulator with internal reference (1.25V nominal), error amplifier, and PNP pass transistor. Its dropout voltage remains ≤1.3V across 0–0.6A load at TJ = +25°C, enabling 3.3V output from as low as 4.6V input while maintaining regulation.
It integrates thermal shutdown and current limiting, uses external 100µF output capacitance (ESR 0.15–20Ω) for stability, and achieves 70dB ripple rejection at 120Hz - critical for noise-sensitive logic supplies in PC peripherals and communication interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.300V ±1% at 10mA, 4.8–12V input range - ensures compatibility with standard 3.3V logic families. |
| Max Dropout Voltage | 1.3V at 0.6A load - allows operation from 4.6V minimum input while sustaining full-rated output. |
| Load Regulation | ≤33mV over 0–0.6A - maintains tight output tolerance during dynamic current steps in bus termination. |
| Ripple Rejection | 70dB at 120Hz with 25µF tantalum output cap - suppresses switching noise from upstream DC/DC converters. |
| Thermal Resistance θJA | 164°C/W (FR-4, 2oz Cu, no heatsink) - requires derating above ~0.3A at ambient >70°C for safe continuous operation. |
| Quiescent Current | 5–10mA minimum load required - defines lowest operational current before regulation loss in standby modes. |
| ESR Range (COUT) | 0.15–20Ω - constrains capacitor selection to ensure phase margin and prevent oscillation. |
Pinout & Package
SOT89-3L package with exposed tab acting as VIN terminal (Pin 2), per AP1115B configuration. Compact 4.5×2.5mm footprint optimized for space-constrained PCB layouts in peripheral modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: Adj (GND) | Ground reference / adjust node | Internally tied to GND in fixed-mode variants; serves as feedback reference point for output voltage setting. |
| Pin 2: VIN | Input supply | Main power input; tab connected internally - requires thermal pad connection to PCB copper for heat dissipation. |
| Pin 3: VOUT | Regulated output | Delivers 3.3V; must connect ≥100µF capacitor (0.15–20Ω ESR) directly to ground for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | ±40mV output deviation under 100mA–600mA step load (20µs recovery) - minimizes voltage droop during burst-mode data transfers. |
| Built-in thermal shutdown | Activates at TJ ≥ +150°C - protects device during sustained overload or inadequate PCB copper area. |
| Output current limiting | Guaranteed ≥0.7A foldback limit - prevents damage during short-circuit events without external protection. |
| Lead-free & Halogen-free | RoHS-compliant SOT89-3L with <900ppm Br/Cl and <1000ppm Sb - meets IPC-1752A environmental compliance for industrial shipments. |
| Low-noise regulation | 0.6% temperature stability and 0.04%/W thermal regulation - reduces drift-induced timing jitter in clock-synchronized logic. |
Applications
| PC Peripheral Power | VGA Card Core Supply |
|---|---|
|
Use Scenario: Providing clean 3.3V rail to USB controller ICs and PCIe endpoint logic on add-in cards. IC Role / Device Role / Timing Role: Primary low-noise LDO supplying I/O buffers and configuration registers. Use Value: 70dB ripple rejection prevents coupling of switching noise into high-speed data lanes, reducing bit error rates. |
Use Scenario: Delivering stable 3.3V to GPU memory interface circuitry and display controller logic. IC Role / Device Role / Timing Role: Fixed-output regulator powering DDR memory termination and pixel clock drivers. Use Value: ≤33mV load regulation ensures consistent signal integrity across varying graphics workloads and frame rates. |
| High-Speed Bus Termination | Low-Power Communication Module |
|
Use Scenario: Biasing parallel termination resistors on LVDS or RSDS video buses in embedded displays. IC Role / Device Role / Timing Role: Precision voltage source establishing reference level for differential receivers. Use Value: 1.25V internal reference and 0.6% temp stability maintain accurate termination voltage across –25°C to +125°C junction range. |
Use Scenario: Powering UART-to-USB bridge ICs and RS-485 transceivers in industrial gateways. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling noisy system rails. Use Value: Fast transient response limits voltage sag during packet transmission bursts, preventing UART framing errors. |
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 |
|---|---|---|---|
| MCP1700T-3302E/TT | 0.25A max output, 6µA quiescent current, 170mV dropout at 250mA - lower current, ultra-low IQ. | Targeted at battery-powered sensors; insufficient for 0.6A VGA loads. | Select only for <250mA, low-IQ portable designs where dropout <200mV is prioritized over current capacity. |
| TPS79933DRVR | 0.2A output, 1.5% accuracy, 0.175V dropout at 200mA - higher precision, lower dropout, lower current. | Designed for RF and analog signal chains requiring tighter voltage tolerance and lower noise. | Choose when output accuracy (±1.5%) and sub-200mV dropout outweigh 0.6A capability - not suitable for bus termination loads. |
Compared with MCP1700T-3302E/TT and TPS79933DRVR, the AP1115AY30G-13 uniquely balances 0.6A delivery, 1.3V dropout headroom, and robust thermal protection - making it irreplaceable in legacy PC peripheral and VGA card designs where sustained current and ruggedness are primary constraints.
Availability
AP1115AY30G-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 amid end-of-life sourcing challenges.
Supply support for AP1115AY30G-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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP1115 belongs to Diodes' legacy LDO regulator product line, engineered specifically for cost-sensitive, medium-current applications demanding reliability in PC peripheral and graphics subsystem power delivery.
FAQ
Is AP1115AY30G-13 still in production?
No - Diodes Incorporated officially discontinued the AP1115 family in April 2016, marking it obsolete with no direct replacement. Aetrix Electronics maintains limited legacy stock with full traceability and offers engineering support for last-time buys and obsolescence mitigation strategies.
What is the correct output capacitor for stability?
A minimum 100µF aluminum or tantalum capacitor with ESR between 0.15Ω and 20Ω must be placed directly between VOUT and GND. Ceramic capacitors alone are insufficient due to near-zero ESR; a 100µF/2.5V tantalum or 100µF/6.3V low-ESR aluminum part meets the specification.
Can AP1115AY30G-13 be used with 12V input?
Yes - the device supports input voltages up to 18V. At 12V input and 3.3V/0.6A output, power dissipation is (12 − 3.3) × 0.6 = 5.22W, exceeding the 5W thermal limit. Derating to ≤0.5A or adding ≥4cm² copper pour is required for reliable operation.
How does the SOT89-3L pinout differ between AP1115A and AP1115B versions?
AP1115AY30G-13 uses the AP1115B pinout: Pin 1 = Adj/GND, Pin 2 = VIN (tab-connected), Pin 3 = VOUT. This differs from AP1115A (Pin 1 = VOUT, Pin 2 = Adj/GND, Pin 3 = VIN), and incorrect PCB layout will cause functional failure or thermal runaway.
AP1115AY30G-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):
- 3V
- 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
AP1115AY30G-13 FAQ
1.How can I place an order for AP1115AY30G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115AY30G-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 AP1115AY30G-13 reliable?
The price and inventory of AP1115AY30G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115AY30G-13 is usually 5 days.
3.What payment methods are accepted for AP1115AY30G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115AY30G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115AY30G-13?
AP1115AY30G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115AY30G-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 AP1115AY30G-13?
For technical support, including AP1115AY30G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115AY30G-13 requirements.
6.How does Aetrix verify that AP1115AY30G-13 is sourced from the original manufacturer or authorized distributors?
All AP1115AY30G-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 AP1115AY30G-13 meets industry standards.
7.What is the process for return or replacement of AP1115AY30G-13?
All AP1115AY30G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115AY30G-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 AP1115AY30G-13 part is unused and in its original packaging.
Return procedure for AP1115AY30G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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