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Diodes Incorporated AP1115AY15G-13
- Part No.:
- AP1115AY15G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115AY15G-13.pdf
- Description:
- IC REG LINEAR 1.5V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,317
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Product details
Overview
AP1115AY15G-13 from Diodes Incorporated is a 0.6A low-dropout positive fixed-mode voltage regulator with 1.5V output, SOT89-3L package, and guaranteed ≤1.3V dropout at full load. It delivers stable 1.5V supply for low-voltage ICs in high-speed bus termination and PC peripheral logic rails, supporting input up to 18V.
For engineers reviewing the AP1115AY15G-13 datasheet, AP1115AY15G-13 pinout, AP1115AY15G-13 application, or AP1115AY15G-13 equivalent, key selection criteria include dropout voltage at 600mA, thermal shutdown behavior, output voltage accuracy over temperature, and SOT89-3L thermal resistance (θJA = 164°C/W).
Technical Context
The AP1115AY15G-13 operates in fixed-output mode (1.5V), with internal reference voltage of 1.25V ±2.5% and feedback network integrated. Its control loop ensures fast transient response and maintains regulation when VIN ≥ VOUT + 1.3V across 0–125°C junction range.
It integrates current limiting (0.7A min), thermal shutdown (TMJ = +150°C), and ripple rejection of 60–70dB at 120Hz. Output stability requires 10µF capacitor (ESR 0.15–20Ω) between VOUT and GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.500V ±2% at 10mA, 3V ≤ VIN ≤ 12V - ensures compatibility with 1.5V logic families and DDR termination. |
| Dropout Voltage | 1.1V typical / 1.3V max at 0.6A - enables regulation from 2.8V input, critical for multi-rail systems with tight headroom. |
| Load Regulation | 12–15mV over 0–0.6A load - minimizes voltage sag during dynamic current steps in bus drivers. |
| Ripple Rejection | 60–70dB 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, recommended pad layout) - defines maximum power dissipation (≈5W) without heatsink. |
| Quiescent Current | 5–10mA minimum load required - sets lower bound for standby operation in always-on peripheral circuits. |
Pinout & Package
SOT89-3L package with exposed tab (pin 3) electrically connected to VIN; thermally optimized for PCB copper pour attachment. Pin 1 = VOUT, Pin 2 = Adj/GND, Pin 3 = VIN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (VOUT) | Regulated output node | Delivers 1.5V to load; requires ≥10µF capacitor (0.15–20Ω ESR) to ground for loop stability. |
| Pin 2 (Adj/GND) | Ground reference terminal | Internal connection to GND in fixed-mode variants; not adjustable - ties feedback divider internally. |
| Pin 3 (VIN) | Input supply terminal | Accepts 3–18V input; must remain ≥1.3V above VOUT; connects to large storage capacitor for transient hold-up. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 1.3V max dropout at 0.6A enables use with 2.8V input for 1.5V rail - reduces heat generation vs. higher-VDO LDOs. |
| Integrated thermal shutdown | Triggers at TJ = +150°C and auto-recovers on cooldown - protects against sustained overload in compact enclosures. |
| Fast transient response | Sub-10µs recovery from 100mA→600mA load step - maintains voltage within ±1% for high-speed bus signaling. |
| Lead-free & halogen-free | SOT89-3L meets RoHS 2 and "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb) - supports environmental compliance programs. |
Applications
| PC Peripheral Power | VGA Card Logic Supply |
|---|---|
|
Use Scenario: Providing clean 1.5V bias to USB controller PHYs and PCIe endpoint buffers on add-in cards. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable core voltage independent of upstream DC/DC ripple. Use Value: Maintains signal integrity by limiting output deviation to ±15mV under full 600mA load step - prevents bit errors in high-speed serial links. |
Use Scenario: Powering 1.5V I/O banks on VGA graphics card memory interface and display controller ASICs. IC Role / Device Role / Timing Role: Low-noise local regulator decoupling high-frequency switching noise from GPU memory subsystems. Use Value: 60–70dB ripple rejection suppresses 120Hz artifacts from AC-DC adapters - eliminates visible screen flicker. |
| High-Speed Bus Termination | Low-Power Embedded Logic Rail |
|
Use Scenario: Supplying termination voltage for DDR2/DDR3 address/command buses requiring precise 1.5V reference. IC Role / Device Role / Timing Role: Precision voltage source maintaining VTT tracking within ±1% of VDDQ for impedance matching. Use Value: 1.500V ±2% output tolerance ensures consistent bus termination impedance - reduces timing skew and reflection. |
Use Scenario: Generating 1.5V supply for microcontroller I/O peripherals in industrial sensor nodes with battery backup. IC Role / Device Role / Timing Role: Efficient linear regulator operating from wide-input 3–12V sources with minimal quiescent current overhead. Use Value: 5–10mA minimum load requirement allows direct connection to low-leakage MCU GPIOs - simplifies enable sequencing. |
Availability
AP1115AY15G-13 is available at Aetrix Electronics and suitable for PC peripheral power, VGA card logic supply, and high-speed bus termination requiring stable component supply despite end-of-life status.
Supply support for AP1115AY15G-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 series belongs to Diodes' precision LDO portfolio, designed specifically for low-voltage, high-current applications where dropout voltage, thermal robustness, and noise immunity are critical - such as bus termination and logic supply in space-constrained PC peripherals.
FAQ
Is AP1115AY15G-13 still in active production?
No - Diodes Incorporated officially discontinued the AP1115 series as of April 2016 (DS31026 Rev. 6-4). AP1115AY15G-13 is obsolete with no direct replacement offered by the manufacturer. Aetrix Electronics maintains limited legacy stock with full traceability and documentation for design continuity support.
What is the correct pin configuration for AP1115AY15G-13?
AP1115AY15G-13 uses the AP1115A pinout: Pin 1 = VOUT (1.5V), Pin 2 = Adj/GND (internally grounded for fixed mode), Pin 3 = VIN. The metal tab (exposed pad) is electrically connected to VIN per Diodes' SOT89-3A mechanical drawing and pin assignment diagrams.
Can AP1115AY15G-13 be used with ceramic output capacitors?
Yes, but only if ESR is ≥0.15Ω - standard X7R/X5R ceramics typically fall below this threshold and may cause instability. Diodes specifies 10µF tantalum or aluminum electrolytic (0.15–20Ω ESR) for guaranteed stability; ceramic use requires external ESR addition or careful selection of high-ESR specialty types.
What is the maximum allowable input voltage for AP1115AY15G-13?
The absolute maximum DC input voltage is +18V, but recommended operating range is 3V to 12V for 1.5V output. At 18V input with 0.6A load, power dissipation exceeds 7.8W - exceeding the 5W thermal limit even with ideal heatsinking; practical max VIN is 8–10V depending on ambient and PCB copper area.
AP1115AY15G-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):
- 1.3V @ 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
AP1115AY15G-13 FAQ
1.How can I place an order for AP1115AY15G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115AY15G-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 AP1115AY15G-13 reliable?
The price and inventory of AP1115AY15G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115AY15G-13 is usually 5 days.
3.What payment methods are accepted for AP1115AY15G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115AY15G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115AY15G-13?
AP1115AY15G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115AY15G-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 AP1115AY15G-13?
For technical support, including AP1115AY15G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115AY15G-13 requirements.
6.How does Aetrix verify that AP1115AY15G-13 is sourced from the original manufacturer or authorized distributors?
All AP1115AY15G-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 AP1115AY15G-13 meets industry standards.
7.What is the process for return or replacement of AP1115AY15G-13?
All AP1115AY15G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115AY15G-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 AP1115AY15G-13 part is unused and in its original packaging.
Return procedure for AP1115AY15G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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