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Diodes Incorporated AP1086D15L-U
- Part No.:
- AP1086D15L-U
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AP1086D15L-U.pdf
- Description:
- IC REG LINEAR 1.5V 1.5A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,697
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Product details
Overview
AP1086D15L-U from Diodes Incorporated is a 1.5A low-dropout linear regulator in TO252-3L package, fixed at 1.5V output, with maximum 1.4V dropout at full load, ±1% load regulation (1.5A), and 60dB ripple rejection at 120Hz. It delivers stable power for high-speed bus termination and 3.3V logic supply rails in VGA cards and embedded systems.
For engineers reviewing the AP1086D15L-U datasheet, AP1086D15L-U pinout, AP1086D15L-U application, or AP1086D15L-U equivalent, key selection criteria include dropout voltage under 1.4V at 1.5A, thermal shutdown protection, minimum 10µF output capacitance requirement, and TO252-3L thermal resistance of 101°C/W (no heatsink).
Technical Context
The AP1086D15L-U implements a PNP-based LDO architecture with internal 1.25V reference and feedback loop compensation requiring ≥10µF output capacitor for stability. Its fast transient response supports dynamic load steps from 0 to 1.5A within ±33mV deviation.
Thermal shutdown activates at 150°C junction temperature, and current limiting holds output at ~1.6A during overload. Input must exceed VOUT by ≥1.4V; operation is guaranteed from 0°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1.5% (1.47–1.53V) at 10mA, ensuring compatibility with 1.5V logic families |
| Dropout Voltage | Max 1.4V at 1.5A load, enabling regulation from 2.9V input (e.g., LiFePO₄ battery) |
| Load Regulation | ±15mV over 0–1.5A (at VIN=3V), minimizing voltage sag during CPU core switching |
| Ripple Rejection | 60–70dB at 120Hz with 25µF tantalum output cap, suppressing switching noise from upstream DC/DC stages |
| Thermal Resistance θJA | 101°C/W (TO252-3L, no heatsink), requiring PCB copper area ≥7.2×2.29mm² for 1.5A continuous operation |
| Quiescent Current | 5–10mA minimum load required to maintain regulation, critical for standby power budgeting |
| Reference Voltage | 1.25V ±2%, used internally for feedback accuracy and determining external resistor tolerance needs |
Pinout & Package
AP1086D15L-U uses the TO252-3L (DPAK) surface-mount package with exposed thermal pad connected to VOUT. The tab is electrically tied to Pin 2 (VOUT), enhancing thermal dissipation when soldered to PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Adj/GND) | Adjust/Ground terminal | Ground connection in fixed-mode variants; unused (bypassed) for AP1086D15L-U; must be connected to system GND |
| Pin 2 (VOUT) | Regulated output | Delivers 1.5V; requires ≥10µF aluminum/tantalum capacitor to ground for loop stability and transient response |
| Pin 3 (VIN) | Input supply | Accepts 2.9–12V input; must remain ≥1.4V above VOUT; large bulk capacitor recommended to prevent sag during load transients |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.5V output | Eliminates external resistor network, reducing BOM count and layout sensitivity for dedicated 1.5V rail generation |
| 1.4V max dropout at 1.5A | Enables efficient operation from single-cell LiFePO₄ (2.8–3.6V) or 3.3V pre-regulated supplies without cascaded conversion loss |
| Built-in thermal shutdown | Protects against sustained overload or insufficient PCB copper; auto-recovery after cooldown prevents latch-up failure mode |
| Current limiting at ~1.6A | Prevents catastrophic failure during short-circuit events while allowing safe fault detection via current-sense resistor |
| Lead-free & RoHS-compliant | Meets EU Directive 2002/95/EC with green molding compound (Br/Sb-free), supporting environmental compliance in industrial and consumer designs |
Applications
| VGA Graphics Card Power | Industrial I/O Module Supply |
|---|---|
Use Scenario: Providing clean 1.5V bias for DDR memory interface on discrete graphics cards. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable voltage to memory termination resistors and buffer ICs. Use Value: 1.4V dropout enables direct regulation from 3.3V plane, avoiding extra DC/DC stage and reducing board area by 25%. | Use Scenario: Powering isolated analog front-end circuitry in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Low-noise local regulator for precision ADC reference and op-amp bias rails. Use Value: 0.003% RMS noise and 60dB ripple rejection ensure <100µV output ripple, preserving 16-bit ADC effective resolution. |
| Embedded FPGA Core Rail | Automotive Infotainment Display Interface |
Use Scenario: Supplying configurable logic core voltage (1.5V) in Xilinx Spartan-6 or Intel MAX 10 FPGA-based edge controllers. IC Role / Device Role / Timing Role: Primary core regulator handling dynamic current bursts up to 1.5A during configuration or DSP acceleration. Use Value: Fast transient response limits voltage dip to ±26mV during 0→1.5A load step, preventing FPGA configuration lockup. | Use Scenario: Generating 1.5V supply for LVDS transmitter ICs driving TFT-LCD panels in automotive head units. IC Role / Device Role / Timing Role: Stable voltage source for high-speed differential signaling with tight common-mode control. Use Value: ±1% load regulation ensures LVDS common-mode voltage stays within 1.485–1.515V, maintaining signal integrity across temperature. |
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 |
|---|---|---|---|
| AP1086D15G-13 | Same electrical specs; TO252-3L package in tape-and-reel (2500 pcs), green compound | Identical performance; preferred for automated SMT production vs. tube packaging | Select for high-volume assembly where reel feeding is required |
| TLV1117-15CDCYR | 1A output, 1.2V dropout at full load, SOT-223 package, 80°C/W θJA | Limited to 1A loads; higher thermal resistance requires larger PCB copper for same power dissipation | Choose only if 1A max load and space-constrained SOT-223 footprint are acceptable |
Compared with AP1086D15L-U, AP1086D15G-13 offers identical performance in reel format for volume manufacturing, while TLV1117-15CDCYR trades 0.5A current capacity and higher thermal resistance for smaller footprint-making it suitable only for lower-power, space-limited designs.
Availability
AP1086D15L-U is available at Aetrix Electronics and suitable for VGA graphics card power delivery, industrial I/O module supply, and embedded FPGA core rail applications requiring stable component supply with lead-free compliance and TO252-3L thermal performance.
Supply support for AP1086D15L-U 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 automotive markets.
The AP1086 product line delivers cost-optimized, thermally robust LDO regulators targeting high-current, low-noise local power in graphics, embedded, and industrial control systems where dropout voltage and transient response are critical.
FAQ
What is the minimum input voltage required for AP1086D15L-U to regulate at 1.5V?
The AP1086D15L-U requires VIN ≥ VOUT + 1.4V = 2.9V to maintain regulation at full 1.5A load. At lighter loads, dropout decreases; at 10mA, typical dropout is ~1.3V. Operation below 2.9V results in unregulated output tracking VIN minus dropout, verified per DS31028 Rev.6 Section 3 absolute maximum ratings.
Can AP1086D15L-U be used without an output capacitor?
No. A minimum 10µF aluminum or tantalum capacitor is mandatory between VOUT and GND for loop stability and transient response, as confirmed in the Functional Description section (page 4) and Typical Application Circuit (page 2). Omitting it causes oscillation and potential device failure under load.
Is the thermal pad (tab) on AP1086D15L-U electrically connected?
Yes. The exposed tab in the TO252-3L package is internally connected to Pin 2 (VOUT), as stated in the Pin Assignments diagram (page 2) and Package Outline Dimensions (page 8). It must be soldered to a VOUT-copper pour for optimal thermal performance and electrical safety.
Does AP1086D15L-U support adjustable output configurations?
No. AP1086D15L-U is a fixed 1.5V variant. Adjustable versions use "Adj" suffix (e.g., AP1086DADJ-U) and require external resistor divider on the Adj pin. The D15 designation confirms factory-masked 1.5V output, with Adj pin internally tied to GND and not functional for voltage programming.
AP1086D15L-U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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-252-3
AP1086D15L-U FAQ
1.How can I place an order for AP1086D15L-U through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1086D15L-U 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 AP1086D15L-U reliable?
The price and inventory of AP1086D15L-U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1086D15L-U is usually 5 days.
3.What payment methods are accepted for AP1086D15L-U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1086D15L-U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1086D15L-U?
AP1086D15L-U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1086D15L-U 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 AP1086D15L-U?
For technical support, including AP1086D15L-U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1086D15L-U requirements.
6.How does Aetrix verify that AP1086D15L-U is sourced from the original manufacturer or authorized distributors?
All AP1086D15L-U 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 AP1086D15L-U meets industry standards.
7.What is the process for return or replacement of AP1086D15L-U?
All AP1086D15L-U units undergo pre-shipment inspection (PSI). If there is an issue with AP1086D15L-U, 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 AP1086D15L-U part is unused and in its original packaging.
Return procedure for AP1086D15L-U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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