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Diodes Incorporated AP1086KL-13
- Part No.:
- AP1086KL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
AP1086KL-13.pdf
- Description:
- IC REG LIN POS ADJ 1.5A TO263-2
- Quantity:
- Payment:
- Shipping:
Inventory:800
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Product details
Overview
AP1086KL-13 from Diodes Incorporated is a 1.5A low dropout (LDO) positive voltage regulator in TO263-3L package, configurable as adjustable or fixed-output (3.3V), with 1.4V max dropout at full load, ±1% load regulation, and 70dB ripple rejection at 120Hz - used for stable 3.3V supply in VGA cards and high-speed bus termination.
For engineers reviewing the AP1086KL-13 datasheet, AP1086KL-13 pinout, AP1086KL-13 application, or AP1086KL-13 equivalent, key selection factors include dropout voltage under 1.5A load, thermal resistance (θJC = 0.65°C/W for control circuitry), output capacitor stability requirements (≥10µF), and fixed-mode VOUT accuracy (3.235–3.365V at 10mA).
Technical Context
The AP1086KL-13 implements a fixed 3.3V output LDO architecture using an internal bandgap reference (1.25V) and error amplifier with current-limiting and thermal shutdown protection. It operates with input voltages from 4.8V to 12V and maintains regulation down to a 1.4V VIN–VOUT differential.
Its fast transient response is enabled by internal compensation optimized for ≥10µF tantalum or aluminum electrolytic output capacitance, and it delivers <±1% total output deviation across 0–1.5A load steps while maintaining junction temperature ≤125°C under typical heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V fixed (3.235–3.365V at 10mA, 25°C); enables direct replacement of 3.3V logic rails without external resistors. |
| Max Dropout Voltage | 1.4V at 1.5A load; allows operation from 4.8V input to deliver regulated 3.3V, minimizing power loss in low-VIN systems. |
| Load Regulation | 26–33mV (0–1.5A, 25°C); ensures stable voltage delivery across full load range without requiring remote sensing. |
| Ripple Rejection | 70dB at 120Hz with 25µF tantalum output cap; suppresses input supply noise critical for analog-sensitive digital subsystems. |
| Thermal Resistance θJC | 0.65°C/W (control circuitry), 2.7°C/W (power transistor) in TO263-3L; enables precise junction temperature estimation for heatsink sizing. |
| Quiescent Current | 5–10mA minimum load requirement; defines lowest operational current before regulation loss in standby modes. |
| Output Capacitor Min | 10µF aluminum/tantalum; mandatory for stability and transient response-smaller values risk oscillation or overshoot. |
Pinout & Package
AP1086KL-13 uses the TO263-3L surface-mount package with exposed tab electrically connected to VOUT for thermal conduction and low-inductance output path. The tab must be soldered to a large copper pour for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Adj/GND) | Adjust/ground terminal | In fixed-mode (3.3V), this pin is internally tied to ground; no external connection required - simplifies PCB layout vs adjustable variants. |
| 2 (VOUT) | Regulated output | Primary power rail output; connects directly to load and output capacitor; tab is electrically bonded to this pin for thermal + electrical integrity. |
| 3 (VIN) | Input supply | Unregulated DC input; must exceed VOUT by ≥1.4V at full load; requires local 100µF bulk capacitance to prevent sag during transients. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.3V output mode | Eliminates external resistor divider, reducing BOM count and layout sensitivity while guaranteeing ±2% initial accuracy over temperature. |
| Built-in thermal shutdown | Activates at TJ ≥150°C and latches off until cooldown; protects against sustained overload or inadequate heatsinking in enclosed systems. |
| Current limiting | 1.6A typical foldback limit; prevents catastrophic failure during short-circuit events while allowing safe restart after fault clearance. |
| Lead-free & RoHS-compliant | Meets EU Directive 2002/95/EC with green molding compound (no Br/Sb); supports environmental compliance for industrial and consumer deployments. |
| Fast transient response | ≤100µs recovery from 0→1.5A load step with <±40mV deviation; sustains clean power during CPU/GPU burst activity in graphics subsystems. |
Applications
| VGA Graphics Card Power | High-Speed Bus Termination |
|---|---|
|
Use Scenario: Providing stable 3.3V bias to DDR SDRAM termination resistors and GPU I/O buffers on discrete graphics cards. IC Role / Device Role / Timing Role: Primary 3.3V LDO regulator delivering low-noise, fast-response power to high-frequency signal paths. Use Value: 70dB ripple rejection and <±33mV load regulation ensure signal integrity margins are maintained across PCIe and memory bus interfaces. |
Use Scenario: Supplying termination voltage for LVDS, RSDS, or mini-SAS differential signaling links in storage and telecom backplanes. IC Role / Device Role / Timing Role: Fixed-output LDO acting as precision reference source for parallel termination networks. Use Value: Tight 3.3V tolerance (±2%) and fast transient response prevent timing skew and jitter accumulation in multi-drop bus topologies. |
| Low-Power 3.3V Logic Rail | Industrial FPGA I/O Bank Supply |
|
Use Scenario: Powering 3.3V I/O banks of microcontrollers and ASICs in battery-backed or energy-constrained embedded controllers. IC Role / Device Role / Timing Role: Efficient linear regulator replacing switching solutions where EMI sensitivity prohibits inductors. Use Value: 1.4V dropout enables use with single-cell LiFePO₄ (3.6V nominal) or dual-cell NiMH inputs while sustaining full 1.5A capability. |
Use Scenario: Delivering clean 3.3V to FPGA configuration I/O banks requiring tight voltage tolerance and low PSRR in programmable logic systems. IC Role / Device Role / Timing Role: Dedicated LDO per I/O bank to isolate noise coupling between banks and maintain setup/hold timing margins. Use Value: 0.003% RMS noise and <±1% total output deviation ensure reliable configuration loading and high-speed I/O eye diagrams remain open. |
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 |
|---|---|---|---|
| AP1117K-33L-13 | 1A output, 1.3V dropout at full load, TO263-3L, same 3.3V fixed output but lower current rating. | Suitable only for sub-1A loads; insufficient for VGA card termination requiring 1.5A peak current. | Select when thermal budget or cost constraints prioritize lower IOUT and reduced footprint. |
| TLV1117-33CKC | 800mA output, 1.2V dropout, TO220-5L, higher quiescent current (5–10mA vs 3–5mA), no thermal shutdown latch. | Lacks thermal latch and 1.5A capability; requires larger heatsink for equivalent power dissipation. | Prefer for legacy TO220-compatible designs where pinout compatibility outweighs performance trade-offs. |
Compared with AP1117K-33L-13 and TLV1117-33CKC, AP1086KL-13 uniquely combines 1.5A continuous output, 1.4V dropout, and integrated thermal latch in TO263-3L - making it the only option validated for sustained 3.3V/1.5A operation in thermally constrained graphics and bus-termination applications.
Availability
AP1086KL-13 is available at Aetrix Electronics and suitable for VGA graphics card power, high-speed bus termination, and industrial FPGA I/O bank supply requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP1086KL-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 AP1086 product line delivers low-dropout linear regulators optimized for high-current, low-noise applications such as graphics subsystems and high-speed interface termination - emphasizing thermal robustness and transient performance over cost-minimized alternatives.
FAQ
What is the minimum input voltage required for AP1086KL-13 to regulate 3.3V at 1.5A?
The AP1086KL-13 requires a minimum input voltage of 4.7V to maintain regulation at 1.5A load, based on its guaranteed maximum dropout voltage of 1.4V (3.3V + 1.4V = 4.7V). Input below this threshold causes output collapse, confirmed in Electrical Characteristics table under Dropout Voltage test conditions.
Can AP1086KL-13 be used without an output capacitor?
No - AP1086KL-13 requires a minimum 10µF aluminum or tantalum output capacitor connected directly between VOUT and GND for stability and transient response. Omission causes oscillation or uncontrolled voltage deviation, as stated in Functional Description and Pin Descriptions sections of the datasheet.
Is the tab on AP1086KL-13 electrically isolated or connected to a pin?
The exposed tab on AP1086KL-13 (TO263-3L) is electrically connected to Pin 2 (VOUT), not isolated. This is explicitly documented in Pin Assignments: "Tab is VOUT" for TO263-3L, enabling simultaneous thermal conduction and low-impedance output return path when soldered to a VOUT copper plane.
Does AP1086KL-13 support adjustable output configurations?
No - AP1086KL-13 is factory-configured as a fixed 3.3V output device. The "K" in the part number denotes TO263-3L package and "33" specifies 3.3V fixed mode; adjustable versions use "Adj" suffix (e.g., AP1086KL-ADJ-13) and require external resistor divider on Pin 1.
AP1086KL-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 1.4V @ 1.5A
- Current - Output:
- 1.5A
- 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:
- TO-263
AP1086KL-13 FAQ
1.How can I place an order for AP1086KL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1086KL-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 AP1086KL-13 reliable?
The price and inventory of AP1086KL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1086KL-13 is usually 5 days.
3.What payment methods are accepted for AP1086KL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1086KL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1086KL-13?
AP1086KL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1086KL-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 AP1086KL-13?
For technical support, including AP1086KL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1086KL-13 requirements.
6.How does Aetrix verify that AP1086KL-13 is sourced from the original manufacturer or authorized distributors?
All AP1086KL-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 AP1086KL-13 meets industry standards.
7.What is the process for return or replacement of AP1086KL-13?
All AP1086KL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1086KL-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 AP1086KL-13 part is unused and in its original packaging.
Return procedure for AP1086KL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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