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Diodes Incorporated AP1115BY50G-13
- Part No.:
- AP1115BY50G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115BY50G-13.pdf
- Description:
- IC REG LINEAR 5V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,036
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Product details
Overview
AP1115BY50G-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 VGA cards and high-speed bus termination, supporting input up to 18V.
For engineers reviewing the AP1115BY50G-13 datasheet, AP1115BY50G-13 pinout, AP1115BY50G-13 application, or AP1115BY50G-13 equivalent, key selection criteria include dropout voltage at 600mA, thermal shutdown behavior, output voltage accuracy over temperature, and SOT89-3 terminal configuration (Pin 1 = Adj/GND, Pin 2 = VIN, Pin 3 = VOUT).
Technical Context
The AP1115BY50G-13 operates in fixed-output mode with nominal 5.0V regulation, specified for 6.5V ≤ VIN ≤ 12V at 10mA load and maintaining stability with 100µF output capacitance (ESR 0.15–20Ω). Its internal bandgap reference ensures ±2.5% output tolerance over operating temperature (0°C to +125°C junction).
It integrates current limiting and thermal shutdown protection, with fast transient response optimized for dynamic loads typical in PC peripheral power rails. Dropout voltage remains ≤1.3V across full 0–600mA load range at TJ ≤ 125°C, enabling efficient operation from 6.5V input to deliver regulated 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±2% at 10mA, 6.5V ≤ VIN ≤ 12V - ensures compatibility with 5V logic and interface ICs requiring tight tolerance. |
| Max Dropout Voltage | 1.3V at 600mA - enables use with 6.5V minimum input while sustaining regulation under full load. |
| Output Current | 600mA continuous - sufficient for powering multiple low-power ICs on VGA or peripheral boards. |
| Ripple Rejection | 60–70dB at 120Hz - suppresses AC ripple from upstream switching supplies or noisy DC sources. |
| Thermal Resistance θJA | 164°C/W (no heatsink, FR-4, 2oz Cu) - defines maximum power dissipation limit (~5W at ΔT = 125°C) for board-level thermal design. |
| Load Regulation | 40–50mV (0–600mA) - maintains output stability during step-load transients in bus termination applications. |
| Quiescent Current | 5–10mA minimum load required - dictates minimum parallel leakage or bias current needed to sustain regulation. |
Pinout & Package
SOT89-3L package: thermally enhanced 3-pin surface-mount outline with exposed tab (VIN-connected per AP1115B variant), RoHS-compliant and halogen-free "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Adj/GND) | Ground reference / adjustment node | Internally tied to GND in fixed-mode; must be connected to system ground for proper regulation and thermal path conduction. |
| Pin 2 (VIN) | Input supply | Accepts 6.5–18V DC input; requires ≥100µF bulk capacitor with ESR 0.15–20Ω to prevent sag below dropout during transients. |
| Pin 3 (VOUT) | Regulated output | Delivers 5.0V ±2%; requires ≥100µF output capacitor (same ESR range) for loop stability and transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V output | Eliminates external resistor divider, reducing BOM count and layout area for dedicated 5V rail generation. |
| Built-in thermal shutdown | Activates at TJ ≥ 150°C to prevent permanent damage during sustained overload or poor heatsinking. |
| Current limiting | Clamps output at ~0.7A (typical) to protect internal pass transistor and upstream source during short-circuit events. |
| Fast transient response | Stabilizes within microseconds after load steps - critical for bus termination where signal integrity depends on clean, fast-rising VCC. |
| Lead-free & Green packaging | SOT89-3L meets RoHS 2 and halogen/antimony-free standards (<900ppm Br/Cl, <1000ppm Sb), supporting eco-compliant manufacturing. |
Applications
| VGA Graphics Card Power | PCI/PCIe Peripheral Supply |
|---|---|
|
Use Scenario: Providing clean 5V rail to analog front-end and memory buffers on discrete VGA cards. IC Role / Device Role / Timing Role: Primary post-regulator delivering stable 5V from intermediate 12V or 5.5V supply, replacing less efficient linear regulators with higher dropout. Use Value: 1.3V dropout enables >90% efficiency at 6.5V input, reducing heat buildup in compact graphics card PCBs. |
Use Scenario: Powering I/O buffers and configuration logic on add-in cards compliant with PCI/PCIe mechanical and electrical specs. IC Role / Device Role / Timing Role: Fixed-output LDO supplying 5V to legacy PCI signaling circuits and EEPROM configuration storage. Use Value: 60–70dB ripple rejection ensures noise immunity for sensitive configuration reads and hot-plug detection signals. |
| High-Speed Bus Termination | Low-Power Embedded Controller Rail |
|
Use Scenario: Generating precise 5V termination voltage for SCSI, RapidIO, or proprietary high-speed differential buses. IC Role / Device Role / Timing Role: Low-noise, fast-response regulator stabilizing termination voltage during rapid data bursts and protocol handshakes. Use Value: Fast transient response minimizes voltage droop during 100+ mA load steps, preserving signal eye margin and timing margins. |
Use Scenario: Supplying 5V to microcontrollers, UARTs, and sensor interfaces in space-constrained industrial control modules. IC Role / Device Role / Timing Role: Compact, thermally robust LDO delivering regulated 5V where switching noise is unacceptable near analog sensors or clock circuitry. Use Value: SOT89-3L's 164°C/W θJA allows direct PCB copper pour heatsinking without external components, saving board area. |
Availability
AP1115BY50G-13 is available at Aetrix Electronics and suitable for VGA graphics card power, PCI peripheral supply, and high-speed bus termination requiring stable component supply despite end-of-life status.
Supply support for AP1115BY50G-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 communications markets.
The AP1115 belongs to Diodes' LDO voltage regulator product line, designed specifically for low-noise, low-dropout power delivery in space-constrained and thermally demanding applications such as PC peripherals and graphics subsystems.
FAQ
Is AP1115BY50G-13 still in active production?
No - Diodes Incorporated officially discontinued the AP1115 family as of April 2016, marking it obsolete with no replacement part offered. Aetrix Electronics maintains limited legacy stock for continuity support, but no new production runs are planned or available.
What is the correct pin configuration for AP1115BY50G-13?
AP1115BY50G-13 follows the AP1115B pinout: Pin 1 = Adj/GND (grounded internally in fixed mode), Pin 2 = VIN, Pin 3 = VOUT. The exposed tab is electrically connected to VIN, not GND - critical for thermal and electrical layout verification.
Can AP1115BY50G-13 be used with input voltages above 12V?
Yes - absolute maximum VIN is +18V, and the device is characterized for dropout performance up to that level. However, output voltage accuracy and thermal limits must be verified: at 18V input and 600mA load, power dissipation exceeds 7.8W, requiring aggressive heatsinking beyond standard SOT89-3L layout.
Does AP1115BY50G-13 require an external capacitor on the ADJ pin?
No - the "B" suffix denotes fixed-output mode, where the ADJ pin is internally connected to GND. No external resistors or capacitors are needed on Pin 1; it must be connected directly to system ground for reference stability and thermal conduction.
AP1115BY50G-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
AP1115BY50G-13 FAQ
1.How can I place an order for AP1115BY50G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115BY50G-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 AP1115BY50G-13 reliable?
The price and inventory of AP1115BY50G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115BY50G-13 is usually 5 days.
3.What payment methods are accepted for AP1115BY50G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115BY50G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115BY50G-13?
AP1115BY50G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115BY50G-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 AP1115BY50G-13?
For technical support, including AP1115BY50G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115BY50G-13 requirements.
6.How does Aetrix verify that AP1115BY50G-13 is sourced from the original manufacturer or authorized distributors?
All AP1115BY50G-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 AP1115BY50G-13 meets industry standards.
7.What is the process for return or replacement of AP1115BY50G-13?
All AP1115BY50G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115BY50G-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 AP1115BY50G-13 part is unused and in its original packaging.
Return procedure for AP1115BY50G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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