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Diodes Incorporated AP1115BY15G-13
- Part No.:
- AP1115BY15G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115BY15G-13.pdf
- Description:
- IC REG LINEAR 1.5V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
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Product details
Overview
AP1115BY15G-13 from Diodes Incorporated is a 0.6A low-dropout positive fixed-mode voltage regulator with 1.5V output, SOT89-3L package, <1.3V dropout at full load, and integrated thermal shutdown - designed for stable 1.5V supply in VGA cards and high-speed bus termination circuits.
For engineers reviewing the AP1115BY15G-13 datasheet, AP1115BY15G-13 pinout, AP1115BY15G-13 application, or AP1115BY15G-13 equivalent, key selection factors include guaranteed 1.5V ±3% output accuracy at 10mA, 1.1V typical dropout at 0.6A, 60dB ripple rejection at 120Hz, and SOT89-3L thermal resistance of 164°C/W.
Technical Context
The AP1115BY15G-13 operates in fixed-output mode (1.5V) with internal reference and error amplifier driving a PNP pass transistor. It requires no external feedback resistors and maintains regulation with input as low as VIN = VOUT + 1.3V.
Its fast transient response stems from low output impedance and optimized internal compensation. Thermal shutdown activates at TJ ≥ +150°C, and current limiting protects against short-circuit conditions without requiring external foldback circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.500V ±3% at 10mA, ensuring compatibility with 1.5V logic rails and DDR memory termination |
| Max Dropout Voltage | 1.3V at 0.6A load, enabling operation from 2.8V input to deliver regulated 1.5V output |
| Ripple Rejection | 60dB at 120Hz with 25µF tantalum output capacitor, suppressing AC noise on sensitive analog/digital supplies |
| Load Regulation | 12mV over 0–0.6A load range at VIN = 3V, minimizing voltage sag during dynamic current draw |
| Thermal Resistance θJA | 164°C/W (FR-4, 2oz Cu, recommended pad layout), defining maximum power dissipation under natural convection |
| Quiescent Current | 5–10mA minimum load requirement to maintain regulation, critical for standby-mode stability |
Pinout & Package
SOT89-3L package with exposed tab (Pin 2 = VIN, Pin 1 = Adj/GND, Pin 3 = VOUT); tab electrically connected to VIN for enhanced thermal conduction to PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Adj/GND) | Ground reference / adjust node | Internally tied to GND in fixed-mode variants; must be connected to system ground for stability and thermal shutdown reference |
| Pin 2 (VIN) | Input supply terminal | Accepts 3V to 18V DC input; requires ≥100µF low-ESR capacitor to prevent sag during 0.6A transients |
| Pin 3 (VOUT) | Regulated output terminal | Delivers 1.5V ±3%; requires ≥10µF output capacitor (0.15–20Ω ESR) for loop stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.5V output | Eliminates external resistor divider, reducing BOM count and layout sensitivity in space-constrained VGA card designs |
| Built-in thermal shutdown | Automatically disables output when junction temperature exceeds +150°C, preventing damage during sustained overload or poor heatsinking |
| Fast transient response | Stabilizes within microseconds after 0.6A load step, maintaining <±40mV deviation per typical load transient plots |
| Lead-free & halogen-free | Meets RoHS 2 (2011/65/EU) and Diodes' "Green" standard (<900ppm Br, <900ppm Cl, <1000ppm Sb), supporting environmental compliance programs |
Applications
| VGA Graphics Card Power | PCI Express Bus Termination |
|---|---|
|
Use Scenario: Providing clean 1.5V supply to GPU core logic and memory interface circuitry on discrete graphics cards. IC Role / Device Role / Timing Role: Fixed-output LDO regulator delivering stable bias for high-speed digital blocks with tight voltage tolerance. Use Value: Maintains 1.5V ±3% across 0–0.6A load while rejecting switching noise from adjacent DC-DC converters. |
Use Scenario: Supplying precise 1.5V termination voltage for PCIe Gen1/Gen2 reference clock and data lanes. IC Role / Device Role / Timing Role: Low-noise voltage source for parallel bus termination networks requiring minimal ripple-induced jitter. Use Value: 60dB ripple rejection ensures <100µV RMS noise on 1.5V rail, preserving signal integrity in high-speed serial links. |
| Low-Power Industrial I/O Module | Embedded Display Interface Supply |
|
Use Scenario: Powering 1.5V FPGA I/O banks or microcontroller peripherals in compact industrial sensor nodes. IC Role / Device Role / Timing Role: Primary local regulator converting 3.3V/5V system rail to 1.5V logic domain with minimal board area. Use Value: SOT89-3L footprint and 164°C/W θJA enable direct mounting on 2oz copper without heatsink for ≤0.5W dissipation. |
Use Scenario: Generating 1.5V supply for LVDS transmitter ICs and display timing controllers in portable HMI panels. IC Role / Device Role / Timing Role: Low-dropout source for display interface power domains where input headroom is limited by battery or single-cell supply. Use Value: 1.3V max dropout allows operation from 2.8V input (e.g., LiFePO₄), extending usable battery range before brownout. |
Availability
AP1115BY15G-13 is available at Aetrix Electronics and suitable for VGA graphics cards, PCIe bus termination circuits, and low-power industrial I/O modules requiring stable component supply with known end-of-life status and legacy design support.
Supply support for AP1115BY15G-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 consumer markets.
The AP1115 belongs to Diodes' LDO regulator product line, engineered for cost-sensitive, space-constrained applications demanding low dropout, fast transient response, and robust thermal protection - particularly in PC peripheral and graphics subsystems.
FAQ
What is the correct pin configuration for AP1115BY15G-13?
The AP1115BY15G-13 uses the 'B' pin version: Pin 1 = Adj/GND, Pin 2 = VIN, Pin 3 = VOUT. The metal tab is electrically connected to Pin 2 (VIN), not ground - this must be routed to the input plane for thermal performance and electrical safety.
Can AP1115BY15G-13 be used in adjustable mode?
No. The 'Y15' suffix denotes fixed 1.5V output; internal feedback resistors are trimmed and non-accessible. Only AP1115A or AP1115B variants with 'ADJ' marking support external resistor adjustment - this part is factory-configured for 1.5V only.
What is the minimum input voltage required for regulation?
Minimum input is VOUT + dropout voltage = 1.5V + 1.3V = 2.8V at full 0.6A load. At lighter loads, dropout decreases (e.g., 1.1V typical at 0.6A), allowing reliable regulation down to ~2.6V input under nominal conditions.
Is AP1115BY15G-13 still in active production?
No. Per Diodes' DS31026 Rev. 6-4 (April 2016), AP1115 is marked OBSOLETE – PART DISCONTINUED with no alternate part offered. Aetrix Electronics provides last-time-buy inventory and traceable legacy stock for ongoing maintenance and repair programs.
AP1115BY15G-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
AP1115BY15G-13 FAQ
1.How can I place an order for AP1115BY15G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115BY15G-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 AP1115BY15G-13 reliable?
The price and inventory of AP1115BY15G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115BY15G-13 is usually 5 days.
3.What payment methods are accepted for AP1115BY15G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115BY15G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115BY15G-13?
AP1115BY15G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115BY15G-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 AP1115BY15G-13?
For technical support, including AP1115BY15G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115BY15G-13 requirements.
6.How does Aetrix verify that AP1115BY15G-13 is sourced from the original manufacturer or authorized distributors?
All AP1115BY15G-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 AP1115BY15G-13 meets industry standards.
7.What is the process for return or replacement of AP1115BY15G-13?
All AP1115BY15G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115BY15G-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 AP1115BY15G-13 part is unused and in its original packaging.
Return procedure for AP1115BY15G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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