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Diodes Incorporated AP1084D15L-13
- Part No.:
- AP1084D15L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AP1084D15L-13.pdf
- Description:
- IC REG LINEAR 1.5V 5A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
AP1084D15L-13 from Diodes Incorporated is a 5A low-dropout linear regulator with fixed 1.5V output, TO252-3L package, 1.4V max dropout at full load, thermal shutdown, and current limiting. It delivers stable 1.5V supply for high-speed bus termination and low-current logic in VGA cards and embedded systems.
For engineers reviewing the AP1084D15L-13 datasheet, AP1084D15L-13 pinout, AP1084D15L-13 application, or AP1084D15L-13 equivalent, key selection criteria include dropout voltage under 5A load, thermal resistance (θJA = 73°C/W), output voltage tolerance (±2%), minimum load current (10mA), and stability with 10µF output capacitor (ESR 0.15–20Ω).
Technical Context
The AP1084D15L-13 operates as a fixed-output LDO using an internal 1.25V reference and precision error amplifier to maintain regulation across input voltages from 3.0V to 12V. Its dropout behavior is specified at ΔVOUT = 1% of nominal output, ensuring tight regulation down to VIN = VOUT + 1.4V.
It integrates overcurrent protection with 5.1A current limit and thermal shutdown triggered at 150°C junction temperature. The device requires no external compensation and achieves fast transient response via internal frequency compensation optimized for 10µF aluminum electrolytic output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.500V ±2% at 10mA, 25°C - ensures compatibility with 1.5V DDR memory I/O and core logic rails. |
| Max Dropout Voltage | 1.4V at 5A load - enables regulation from 2.9V input, supporting wide-input industrial supplies. |
| Output Current | 5.0A continuous - sufficient for multi-rail FPGA I/O banks or GPU auxiliary power domains. |
| Line Regulation | 0.2% over VIN = VOUT+1.5V to 12V - minimizes output drift during input rail fluctuations. |
| Load Regulation | 12–15mV over 0–5A - maintains voltage accuracy across dynamic CPU/GPU load steps. |
| Thermal Resistance θJA | 73°C/W (TO252-3L) - defines heatsink requirement: ≤25°C rise at 5A with 1W dissipation per °C rise. |
| Reference Voltage | 1.250V ±2% - sets baseline accuracy for fixed and adjustable configurations. |
Pinout & Package
AP1084D15L-13 uses the TO252-3L (DPAK) surface-mount package with exposed thermal tab connected to VOUT for enhanced heat dissipation. Pad layout follows Diodes Inc. AP02001 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Adj/GND) | Adjust/ground terminal | Internally tied to ground in fixed-mode; must be shorted to VOUT for 1.5V operation - no external resistor required. |
| Pin 2 (VOUT) | Regulated output | Primary power output; thermal tab is electrically connected to this pin - requires low-inductance PCB copper pour for thermal and electrical performance. |
| Pin 3 (VIN) | Input supply | Accepts 3.0–12V DC; must remain ≥1.4V above VOUT to sustain regulation - decoupling capacitor required within 5mm. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.5V output configuration | Eliminates external feedback resistors - reduces BOM count and layout area for DDR1/DDR2 memory termination. |
| 1.4V dropout at 5A | Enables efficient conversion from 3.3V intermediate rails - avoids need for cascaded buck-LDO stages. |
| Integrated thermal shutdown | Protects against sustained overload or inadequate heatsinking - latches off until junction cools below 135°C hysteresis. |
| Stable with 10µF output capacitor | Supports low-cost aluminum electrolytic caps (0.15–20Ω ESR) - simplifies sourcing and lowers system cost vs. ceramic-only solutions. |
| Fast transient response | Delivers <±40mV deviation during 0→5A load step - meets Intel VRE spec without additional bulk capacitance. |
Applications
| VGA Graphics Card Power | DDR Memory Termination |
|---|---|
Use Scenario: Providing clean 1.5V supply to analog front-end and DAC circuitry on discrete graphics cards. IC Role / Device Role / Timing Role: Primary 1.5V LDO for video signal chain biasing and clock buffer powering. Use Value: Low noise and fast transient response prevent image artifacts during rapid pixel rate changes. | Use Scenario: Supplying VTT termination voltage for DDR1/DDR2 memory buses operating at 1.5V. IC Role / Device Role / Timing Role: Precision 1.5V source tracking VDDQ with tight load regulation. Use Value: ±15mV load regulation ensures signal integrity across full memory bandwidth without added decoupling. |
| Industrial PLC I/O Module | FPGA Core Logic Supply |
Use Scenario: Delivering regulated 1.5V to isolated digital I/O drivers in programmable logic controllers. IC Role / Device Role / Timing Role: Local point-of-load regulator for 1.5V logic interface ICs. Use Value: Thermal shutdown and current limiting protect against field wiring faults and short-circuit events. | Use Scenario: Powering 1.5V core rails of Spartan-3 or Virtex-4 FPGAs in reconfigurable computing modules. IC Role / Device Role / Timing Role: High-current LDO for FPGA core voltage with minimal board space. Use Value: TO252-3L package allows direct thermal coupling to inner-layer copper planes - sustains 5A continuous without external heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP1084K15L-13 | Same electrical specs, TO263-3L package (θJA = 60°C/W) | Better thermal performance for high-ambient or sealed enclosures | Select when board space permits larger footprint and thermal management is critical. |
| LD1085V15 | STMicroelectronics part; 1.5V fixed, 5A, TO220 package (θJA = 78°C/W), higher dropout (1.5V typ) | Through-hole mounting; slightly lower efficiency at light loads | Choose for legacy through-hole designs or where TO220 mechanical robustness is required. |
Compared with AP1084K15L-13, the D-package version offers lower cost and smaller footprint but higher thermal resistance; versus LD1085V15, it provides superior dropout and surface-mount compatibility while maintaining identical output accuracy and protection features.
Availability
AP1084D15L-13 is available at Aetrix Electronics and suitable for VGA graphics card power, DDR memory termination, industrial PLC I/O modules, and FPGA core logic supply requiring stable component supply and long-term manufacturability.
Supply support for AP1084D15L-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, manufacturing, and sales operations across Asia, Europe, and the Americas.
The AP1084 series belongs to Diodes' high-current LDO product line, engineered specifically for low-voltage, high-current point-of-load regulation in computing, graphics, and industrial control systems where thermal efficiency and transient response are critical.
FAQ
What is the minimum input voltage required for AP1084D15L-13 to regulate at full 5A load?
The AP1084D15L-13 requires VIN ≥ VOUT + 1.4V = 2.9V to maintain regulation at 5A. Below this, dropout occurs and output voltage drops linearly with input. Operation at 3.0V input is recommended to ensure margin across temperature and tolerance.
Can AP1084D15L-13 be used in adjustable mode despite its fixed 1.5V marking?
No - AP1084D15L-13 is factory-configured for fixed 1.5V output. The "D" prefix indicates TO252-3L package and "15" denotes fixed 1.5V; the adjust pin is internally grounded. For adjustable operation, use AP1084DxxL-13 with "blank" suffix (e.g., AP1084DL-13).
What output capacitor ESR range is required for stability with AP1084D15L-13?
A minimum 10µF aluminum electrolytic capacitor with ESR between 0.15Ω and 20Ω is required for guaranteed stability. Tantalum or polymer capacitors within this ESR range are also acceptable; ceramic-only solutions require careful impedance tuning and are not recommended without validation.
Is AP1084D15L-13 RoHS compliant and lead-free?
Yes - the "L" suffix explicitly denotes lead-free finish and RoHS compliance per EU Directive 2002/95/EC. The device uses green molding compound (Br/Sb-free) and conforms to Diodes Incorporated's lead-free manufacturing standards.
AP1084D15L-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 1.4V @ 5A
- Current - Output:
- 5A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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
AP1084D15L-13 FAQ
1.How can I place an order for AP1084D15L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1084D15L-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 AP1084D15L-13 reliable?
The price and inventory of AP1084D15L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1084D15L-13 is usually 5 days.
3.What payment methods are accepted for AP1084D15L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1084D15L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1084D15L-13?
AP1084D15L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1084D15L-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 AP1084D15L-13?
For technical support, including AP1084D15L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1084D15L-13 requirements.
6.How does Aetrix verify that AP1084D15L-13 is sourced from the original manufacturer or authorized distributors?
All AP1084D15L-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 AP1084D15L-13 meets industry standards.
7.What is the process for return or replacement of AP1084D15L-13?
All AP1084D15L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1084D15L-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 AP1084D15L-13 part is unused and in its original packaging.
Return procedure for AP1084D15L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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