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Diodes Incorporated AP1115AY50L-13
- Part No.:
- AP1115AY50L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115AY50L-13.pdf
- Description:
- IC REG LINEAR 5V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,916
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Product details
Overview
AP1115AY50L-13 from Diodes Incorporated is a 0.6A low-dropout positive fixed-mode voltage regulator with 5.0V output, SOT89-3L package, and guaranteed ≤1.3V dropout at full load. It delivers stable 5V supply for low-voltage ICs in high-speed bus termination, 3.3V logic rails, and VGA card power domains.
For engineers reviewing the AP1115AY50L-13 datasheet, AP1115AY50L-13 pinout, AP1115AY50L-13 application, or AP1115AY50L-13 equivalent, key selection criteria include dropout voltage at 0.6A, thermal shutdown behavior, output voltage accuracy (±1%), ripple rejection (60–70dB), and SOT89-3L thermal resistance (θJA = 164°C/W).
Technical Context
The AP1115AY50L-13 operates as a fixed-output linear regulator with internal reference (1.25V typ), error amplifier, and PNP pass transistor. Its architecture enables fast transient response and maintains regulation down to 1.3V input-to-output differential at 0.6A load.
It integrates current limiting and thermal shutdown protection, with guaranteed operation across 0°C to +125°C junction temperature. Input voltage range spans 6.5V to 18V for 5.0V output, and minimum load current is 5mA to sustain regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±2% (4.90–5.10V) at 10mA, ensuring compatibility with 5V TTL/CMOS logic interfaces |
| Dropout Voltage | 1.1V typ / 1.3V max at 0.6A, enabling use with 6.5V input while maintaining 5V output under full load |
| Load Regulation | ±40mV max (0–0.6A), limiting output deviation in dynamic current applications like VGA memory buffers |
| Ripple Rejection | 60–70dB at 120Hz with 25µF tantalum output capacitor, suppressing switching noise from upstream DC/DC stages |
| Thermal Resistance | θJA = 164°C/W (FR-4, 2oz Cu, recommended pad layout), defining maximum power dissipation without heatsink |
| Quiescent Current | 5–10mA minimum load required to maintain regulation, critical for standby power budgeting |
| Current Limit | 0.7A min (at VIN–VOUT = 5V), providing short-circuit protection without external foldback circuitry |
Pinout & Package
SOT89-3L package with exposed tab (Pin 3) electrically connected to VIN; thermally optimized for PCB copper pour attachment. Pin 1 = Adj (GND), Pin 2 = VOUT, Pin 3 = VIN - matching AP1115A variant configuration per datasheet marking code "A".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Adj/GND) | Ground reference terminal | Internal ground node for error amplifier; tied directly to system GND in fixed-mode operation |
| Pin 2 (VOUT) | Regulated output terminal | Delivers 5.0V output; requires ≥10µF capacitor (ESR 0.15–20Ω) for stability and transient response |
| Pin 3 (VIN) | Input supply terminal | Accepts 6.5–18V input; tab connection provides primary thermal path to PCB copper area |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V output | Eliminates external resistor divider, reducing BOM count and layout sensitivity in space-constrained VGA modules |
| Fast transient response | Sub-100µs recovery from 100mA–600mA load steps, preserving signal integrity in burst-mode graphics memory access |
| Built-in thermal shutdown | Activates at TJ = +150°C, preventing catastrophic failure during sustained overload or poor heatsinking |
| Lead-free & Halogen-free | RoHS 2 compliant (2011/65/EU); Br/Cl <900ppm each, Sb <1000ppm - meets IPC-1752A environmental reporting requirements |
| Low-noise regulation | 0.6% temperature stability and 60–70dB ripple rejection enable clean power for analog video DACs and PLLs |
Applications
| VGA Graphics Card Power | PCI Express Peripheral Supply |
|---|---|
Use Scenario: Providing stable 5V rail to analog video DACs and timing controllers on discrete GPU add-in cards. IC Role / Device Role / Timing Role: Fixed-output LDO delivering low-noise 5V bias for analog front-end circuits and clock buffers. Use Value: Maintains <±2% output accuracy across –25°C to +125°C, ensuring consistent color fidelity and sync stability. |
Use Scenario: Powering 5V auxiliary rails on PCIe x16 expansion cards including network adapters and capture devices. IC Role / Device Role / Timing Role: Local point-of-load regulator for 5V I/O logic and management controllers. Use Value: Withstands 120Hz ripple from upstream AC/DC supplies and rejects >60dB of switching noise from adjacent DC/DC converters. |
| Industrial Control I/O Module | Legacy ISA Bus Interface Card |
Use Scenario: Generating regulated 5V for opto-isolated digital input/output banks in programmable logic controllers. IC Role / Device Role / Timing Role: Primary 5V supply for level-shifting buffers and isolated gate drivers. Use Value: Dropout ≤1.3V allows operation from 6.5V industrial 24V-derived intermediate rail, improving system efficiency. |
Use Scenario: Replacing aging 7805 regulators on retro-computing ISA cards requiring legacy 5V TTL compatibility. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete TO-220 5V linear regulators in space-limited designs. Use Value: SOT89-3L footprint reduces board area by 75% vs TO-220 while maintaining identical 5V output specification. |
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-5002E/MB | 0.25A output, 175mV dropout at 250mA, SOT23-3 package, higher PSRR (70dB @ 1kHz) | Limited to low-power microcontroller peripherals; insufficient for 0.6A VGA loads | Select only for sub-250mA applications where ultra-low quiescent current (1.6µA) is prioritized over output current |
| SPX3819M5-L-5-0 | 0.5A output, 340mV dropout at 500mA, SOT23-5 package, integrated enable pin | Requires external enable control; lacks thermal shutdown flag output | Prefer when system-level power sequencing or remote ON/OFF is required, but verify thermal margin at 0.6A continuous load |
Compared with MCP1700T-5002E/MB and SPX3819M5-L-5-0, AP1115AY50L-13 uniquely supports 0.6A continuous output with ≤1.3V dropout and integrated thermal shutdown - making it the only viable option among the three for VGA card 5V analog rail applications demanding both current and ruggedness.
Availability
AP1115AY50L-13 is available at Aetrix Electronics and suitable for VGA graphics card power, PCI Express peripheral supply, and industrial I/O module designs requiring stable component supply amid obsolescence challenges.
Supply support for AP1115AY50L-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 centers across Asia and manufacturing in China, Taiwan, and Malaysia.
The AP1115 belongs to Diodes' precision LDO regulator product line, engineered specifically for low-noise, medium-current power delivery in graphics, communications, and computing infrastructure where thermal robustness and fixed-output simplicity are critical.
FAQ
Is AP1115AY50L-13 still in active production?
No - Diodes Incorporated officially discontinued AP1115AY50L-13 as of April 2016 (DS31026 Rev. 6-4). It is marked "OBSOLETE – PART DISCONTINUED" in all official documentation. Aetrix Electronics maintains limited legacy inventory with full traceability and offers engineering support for last-time buy and redesign transition planning.
What is the correct pinout configuration for AP1115AY50L-13?
AP1115AY50L-13 uses the AP1115A pinout: Pin 1 = Adj (GND), Pin 2 = VOUT, Pin 3 = VIN. The exposed tab is electrically connected to Pin 3 (VIN), not GND - confirmed by Diodes' ordering information table and top-view diagrams in DS31026.
Can AP1115AY50L-13 replace a standard 7805 in existing designs?
Yes, but with critical layout adjustments: AP1115AY50L-13 requires ≥10µF output capacitance (ESR 0.15–20Ω), has lower thermal mass than TO-220 7805, and needs proper SOT89-3L copper pour for θJA = 164°C/W. Input voltage must be ≥6.5V (not 7V minimum), and dropout behavior differs significantly under transient loads.
Does AP1115AY50L-13 support adjustable output via external resistors?
No - the "Y50" suffix denotes fixed 5.0V output. Only AP1115-ADJ variants (e.g., AP1115A-ADJL-13) support adjustable operation using external R1/R2 feedback resistors. The Y50 version internally connects the adjustment node to GND and sets VOUT = 5.0V permanently.
AP1115AY50L-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):
- 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
AP1115AY50L-13 FAQ
1.How can I place an order for AP1115AY50L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115AY50L-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 AP1115AY50L-13 reliable?
The price and inventory of AP1115AY50L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115AY50L-13 is usually 5 days.
3.What payment methods are accepted for AP1115AY50L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115AY50L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115AY50L-13?
AP1115AY50L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115AY50L-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 AP1115AY50L-13?
For technical support, including AP1115AY50L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115AY50L-13 requirements.
6.How does Aetrix verify that AP1115AY50L-13 is sourced from the original manufacturer or authorized distributors?
All AP1115AY50L-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 AP1115AY50L-13 meets industry standards.
7.What is the process for return or replacement of AP1115AY50L-13?
All AP1115AY50L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115AY50L-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 AP1115AY50L-13 part is unused and in its original packaging.
Return procedure for AP1115AY50L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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