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Diodes Incorporated AP1084D50L-13
- Part No.:
- AP1084D50L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AP1084D50L-13.pdf
- Description:
- IC REG LINEAR 5V 5A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,473
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Product details
Overview
AP1084D50L-13 from Diodes Incorporated is a 5.0A fixed-output low-dropout linear regulator in TO252-3L package, delivering precisely regulated 5.0V ±2% output with ≤1.4V dropout at full load. It integrates thermal shutdown and current limiting, and is optimized for high-speed bus termination and 3.3V/5V logic supply in VGA cards and embedded power rails.
For engineers reviewing the AP1084D50L-13 datasheet, AP1084D50L-13 pinout, AP1084D50L-13 application, or AP1084D50L-13 equivalent, key selection criteria include dropout voltage under 5A load, thermal resistance (θJA = 73°C/W), output stability with ≥10µF capacitor (ESR 0.15–20Ω), and fixed-mode operation without external resistors.
Technical Context
The AP1084D50L-13 operates as a fixed-output LDO with internal 1.25V reference and precision trimming to deliver 5.00V ±2% at 10mA–5A load. Its control loop maintains regulation with only 1.4V headroom between VIN and VOUT, enabling efficient conversion from 6.5–12V inputs to stable 5V outputs.
It features built-in current limiting (5.1A typical) and thermal shutdown at 150°C, with fast transient response validated for 0–5A load steps. Stability relies on a minimum 10µF output capacitor with specified ESR range, and layout requires direct VOUT-to-capacitor routing to suppress high-frequency oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.00V ±2% (guaranteed across 0–5A load and 25°C junction temperature) |
| Dropout Voltage | 1.4V max at 5.0A load (enables 5V output from ≥6.5V input) |
| Output Current | 5.0A continuous (limited to 5.1A internally to prevent damage) |
| Line Regulation | 0.2% (input variation from VOUT+1.5V to 12V causes ≤10mV output shift) |
| Load Regulation | 40–50mV over 0–5A (measured at output lead, 1/18″ from package) |
| Thermal Shutdown | Activates at 150°C junction temperature (protects during sustained overload or poor heatsinking) |
| Package Thermal Resistance | θJA = 73°C/W (TO252-3L on FR-4, 2oz copper, no airflow) |
Pinout & Package
AP1084D50L-13 uses the TO252-3L (DPAK) surface-mount package with exposed thermal tab electrically connected to VOUT. The tab must be soldered to a large copper pour for thermal performance and electrical connection to the output rail.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Adj/GND) | Adjust/Ground terminal | Internally tied to ground in fixed-mode (5.0V); no external connection required |
| 2 (VOUT) | Regulated output | Delivers 5.0V; must connect ≥10µF capacitor (0.15–20Ω ESR) directly to this pin |
| 3 (VIN) | Input supply | Accepts 6.5–12V DC; requires bulk capacitance to prevent sag during 5A transients |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 5.0V output | No external resistor network needed - simplifies BOM and layout for dedicated 5V rails |
| 1.4V dropout @ 5A | Enables high-efficiency regulation from low-headroom supplies (e.g., 7V automotive or 8V intermediate bus) |
| Integrated protection | Thermal shutdown + current limiting eliminate need for external fault management circuitry |
| Fast transient response | Validated for 0→5A load steps with <±50mV deviation - reduces required output capacitance |
| Lead-free & RoHS compliant | Meets EU Directive 2002/95/EC with green molding compound (no Br/Sb) |
Applications
| VGA Graphics Card Power | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Providing clean 5V supply to GPU memory interfaces and display controller logic on discrete graphics cards. IC Role / Device Role / Timing Role: Primary 5V LDO regulator delivering stable voltage to high-speed parallel buses and DDR memory buffers. Use Value: 1.4V dropout enables use of compact 7V intermediate rail; fast transient response prevents data corruption during GPU burst loads. |
Use Scenario: Powering isolated digital I/O circuits in programmable logic controllers operating in harsh industrial environments. IC Role / Device Role / Timing Role: Local 5V regulator for optocoupler drivers, level shifters, and microcontroller peripherals. Use Value: Integrated thermal shutdown ensures safe operation during ambient temperatures up to 125°C; TO252-3L allows direct PCB copper heatsinking. |
| Embedded Network Switch ASIC Supply | Medical Diagnostic Imaging Interface |
|
Use Scenario: Generating 5V for Ethernet PHYs and packet buffer memory in compact managed switches. IC Role / Device Role / Timing Role: Fixed-output LDO supplying noise-sensitive analog front-end and SerDes circuitry. Use Value: 0.2% line regulation minimizes voltage drift across varying PoE input; low EMI design avoids interference with Gigabit Ethernet signals. |
Use Scenario: Powering FPGA configuration logic and sensor interface ICs in portable ultrasound or X-ray detector modules. IC Role / Device Role / Timing Role: Secondary 5V regulator downstream of isolated DC-DC converter, ensuring clean supply for timing-critical ADC clocks. Use Value: Tight 5.00V ±2% tolerance supports accurate sensor biasing; RoHS/green compliance meets medical device material restrictions. |
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 |
|---|---|---|---|
| AP1084K50L-13 | Same electrical specs, but TO263-3L (D2PAK) package with θJA = 60°C/W | Better thermal performance for higher ambient or sustained 5A loads; requires larger PCB footprint | Select when thermal margin is critical and board space permits D2PAK mounting |
| TLV1117-50CDCYR | Lower 800mA output, 1.2V dropout @ 800mA, SOT-223 package, no current limit | Suitable only for light-load 5V rails; lacks protection and current capability for VGA/PLC use | Use only in cost-sensitive, low-power applications where 5A capability is unnecessary |
Compared with AP1084K50L-13, the D50L-13 offers lower manufacturing cost and smaller footprint but higher thermal resistance; versus TLV1117-50CDCYR, it delivers 6.25× more current with integrated fault protection-making it irreplaceable in high-power fixed-rail designs.
Availability
AP1084D50L-13 is available at Aetrix Electronics and suitable for VGA graphics card power, industrial PLC I/O modules, and embedded network switch ASIC supply requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP1084D50L-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 semiconductor company specializing in discrete, analog, and mixed-signal devices for power management, signal integrity, and connectivity applications.
The AP1084 series belongs to Diodes' high-current LDO regulator product line, engineered specifically for low-voltage IC power delivery-including high-speed bus termination, logic supply, and VGA card applications-where dropout voltage and transient response are critical.
FAQ
Is AP1084D50L-13 adjustable or fixed-output?
AP1084D50L-13 is a fixed-output variant delivering 5.0V. The "50" in the part number denotes 5.0V; the "D" indicates TO252-3L package; and "L" confirms lead-free construction. Unlike the adjustable AP1084-ADJ version, it requires no external resistors and ties Pin 1 (Adj) internally to GND.
What is the minimum input voltage required for regulation?
The minimum input voltage is VOUT + dropout voltage = 5.0V + 1.4V = 6.4V. Per datasheet specifications, regulation is guaranteed for VIN ≥ 6.5V at 5A load and 25°C. Below this, output voltage drops linearly with input; operation below 6.5V is not recommended for stable 5V delivery.
Can AP1084D50L-13 be used without an output capacitor?
No. A minimum 10µF aluminum or tantalum capacitor (ESR 0.15–20Ω) is mandatory between VOUT and GND for stability and transient response. Omitting it causes oscillation, excessive noise, and potential thermal runaway due to loop instability - confirmed by Diodes' functional description and stability section.
Does AP1084D50L-13 support reverse polarity or backfeed protection?
No. AP1084D50L-13 lacks reverse-voltage or reverse-current protection. If VIN falls below VOUT (e.g., during power-down), current can flow backward from VOUT to VIN through the internal pass transistor, potentially damaging upstream circuitry. External diode protection is required in such scenarios.
AP1084D50L-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:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 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
AP1084D50L-13 FAQ
1.How can I place an order for AP1084D50L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1084D50L-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 AP1084D50L-13 reliable?
The price and inventory of AP1084D50L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1084D50L-13 is usually 5 days.
3.What payment methods are accepted for AP1084D50L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1084D50L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1084D50L-13?
AP1084D50L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1084D50L-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 AP1084D50L-13?
For technical support, including AP1084D50L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1084D50L-13 requirements.
6.How does Aetrix verify that AP1084D50L-13 is sourced from the original manufacturer or authorized distributors?
All AP1084D50L-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 AP1084D50L-13 meets industry standards.
7.What is the process for return or replacement of AP1084D50L-13?
All AP1084D50L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1084D50L-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 AP1084D50L-13 part is unused and in its original packaging.
Return procedure for AP1084D50L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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