My Inquiry
My Account
Diodes Incorporated AP1115BY18L-13
- Part No.:
- AP1115BY18L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115BY18L-13.pdf
- Description:
- IC REG LINEAR 1.8V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,374
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP1115BY18L-13 from Diodes Incorporated is a 0.6A low-dropout positive fixed-mode voltage regulator with 1.8V output, SOT89-3L package, <1.3V dropout at full load, and integrated thermal shutdown-designed for stable 3.3V logic supply and VGA card power rails.
For engineers reviewing the AP1115BY18L-13 datasheet, AP1115BY18L-13 pinout, AP1115BY18L-13 application, or AP1115BY18L-13 equivalent, this page delivers verified electrical specs, terminal roles, fixed-output use cases, and supply-chain context for legacy design continuity and obsolescence-aware sourcing.
Technical Context
The AP1115BY18L-13 operates in fixed-output mode (1.8V), with internal reference trimmed to ±1.2% over temperature and load. Its control architecture uses a PNP pass transistor enabling fast transient response and low quiescent current (5–10mA minimum load).
Dropout is guaranteed ≤1.3V at 0.6A output across 0°C to +125°C junction range; input voltage must exceed VOUT by ≥1.3V for regulation. Ripple rejection is 60–70dB at 120Hz with 25µF tantalum output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.800V ±1.2% (guaranteed at 10mA, 4.3V ≤ VIN ≤ 12V) |
| Max Output Current | 0.6A continuous (limited by thermal resistance θJA = 164°C/W) |
| Dropout Voltage | 1.1V typical / 1.3V max at 0.6A (enables 1.8V output from 3.3V rail) |
| Ripple Rejection | 60–70dB at 120Hz (ensures clean supply for noise-sensitive logic) |
| Thermal Shutdown | Active at TJ ≥ +150°C (prevents damage during overload or poor heatsinking) |
| Load Regulation | 15–18mV over 0–0.6A (±0.9% deviation at 1.8V nominal) |
| Line Regulation | 0.2% max (output drift <3.6mV per 1V input change) |
Pinout & Package
SOT89-3L package: 3-pin surface-mount, lead-free, halogen-free "Green" molding compound; tab is VIN (Pin 2) per AP1115B configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: Adj (GND) | Ground reference / adjust node | Connected directly to system ground in fixed-mode; no external resistor divider required |
| Pin 2: VIN | Input supply | Accepts 4.3V–18V DC; must be ≥1.3V above VOUT to maintain regulation |
| Pin 3: VOUT | Regulated output | Delivers stable 1.8V; requires ≥10µF capacitor (ESR 0.15–20Ω) to ground for stability |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.8V output | Eliminates external feedback resistors-reduces BOM count and layout area for dedicated 1.8V rails |
| Fast transient response | Stabilizes within microseconds under step-load changes (e.g., FPGA I/O switching), minimizing undershoot/overshoot |
| Built-in current limiting | Prevents catastrophic failure during short-circuit events without external foldback circuitry |
| Thermal shutdown protection | Automatically disables output above +150°C junction temperature, enabling safe recovery after cooling |
| Low-noise operation | 60–70dB ripple rejection supports clean power for analog interfaces and high-speed digital I/O |
Applications
| VGA Card Power Rail | PCI Express Peripheral Supply |
|---|---|
Use Scenario: Provides dedicated 1.8V supply to GPU memory interface and display controller I/O banks on discrete graphics cards. IC Role / Device Role / Timing Role: Fixed-output LDO regulator delivering stable voltage independent of upstream DC/DC converter ripple. Use Value: Maintains signal integrity on high-speed video buses by suppressing input ripple and load-induced noise. |
Use Scenario: Powers 1.8V auxiliary logic (e.g., hot-plug controllers, link training state machines) on PCIe add-in cards. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling PCIe slot Vaux from main 3.3V rail. Use Value: Ensures reliable enumeration and link training by meeting PCIe specification's 1.8V ±3% tolerance under dynamic load. |
| Embedded Display Interface | Industrial Camera Sensor Bias |
Use Scenario: Supplies 1.8V to LVDS transmitter ICs and timing controller logic in embedded LCD modules. IC Role / Device Role / Timing Role: Low-noise voltage source for display timing circuits requiring sub-10mV output deviation. Use Value: Prevents visible artifacts (e.g., flicker, ghosting) caused by supply-induced jitter in pixel clock paths. |
Use Scenario: Powers analog front-end bias circuits and column driver logic in monochrome industrial CMOS image sensors. IC Role / Device Role / Timing Role: Precision local regulator stabilizing sensor analog core voltage during exposure readout cycles. Use Value: Reduces dark current variation and fixed-pattern noise by maintaining <±0.5% output drift over temperature. |
Availability
AP1115BY18L-13 is available at Aetrix Electronics and suitable for VGA card power rails, PCIe peripheral supplies, embedded display interfaces, and industrial camera sensor bias requiring stable component supply despite end-of-life status.
Supply support for AP1115BY18L-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.
The AP1115 series belongs to Diodes' LDO regulator product line, engineered for cost-sensitive, space-constrained applications demanding low dropout, fast transient response, and robust thermal protection in computing and peripheral subsystems.
FAQ
Is AP1115BY18L-13 still in production?
No-AP1115BY18L-13 is officially obsolete and discontinued by Diodes Incorporated as of April 2016. Aetrix Electronics maintains limited legacy stock with full traceability and provides engineering support for last-time buy and redesign transition planning.
What is the correct pinout configuration for AP1115BY18L-13?
AP1115BY18L-13 uses the AP1115B pinout: Pin 1 = Adj (GND), Pin 2 = VIN (tab-connected), Pin 3 = VOUT. This differs from AP1115A where the tab is GND and Pin 2 is VOUT.
Can AP1115BY18L-13 replace adjustable AP1115-ADJ variants?
No-it is a fixed 1.8V variant with internal feedback; replacing an adjustable version requires redesigning the output network and verifying stability with the new 1.8V setpoint and associated load characteristics.
What thermal derating applies to AP1115BY18L-13 at 0.6A?
At 0.6A and 1.3V dropout, power dissipation is ~0.78W. With θJA = 164°C/W, junction rise is ~128°C above ambient-requiring PCB copper area or airflow to keep TJ ≤ +125°C for continuous operation.
AP1115BY18L-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):
- 1.8V
- 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
AP1115BY18L-13 FAQ
1.How can I place an order for AP1115BY18L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115BY18L-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 AP1115BY18L-13 reliable?
The price and inventory of AP1115BY18L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115BY18L-13 is usually 5 days.
3.What payment methods are accepted for AP1115BY18L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115BY18L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115BY18L-13?
AP1115BY18L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115BY18L-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 AP1115BY18L-13?
For technical support, including AP1115BY18L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115BY18L-13 requirements.
6.How does Aetrix verify that AP1115BY18L-13 is sourced from the original manufacturer or authorized distributors?
All AP1115BY18L-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 AP1115BY18L-13 meets industry standards.
7.What is the process for return or replacement of AP1115BY18L-13?
All AP1115BY18L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115BY18L-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 AP1115BY18L-13 part is unused and in its original packaging.
Return procedure for AP1115BY18L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1115BY18L-13 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
