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Diodes Incorporated AP1084D50G-13
- Part No.:
- AP1084D50G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AP1084D50G-13.pdf
- Description:
- IC REG LINEAR 5V 5A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
AP1084D50G-13 from Diodes Incorporated is a 5A low-dropout positive fixed-mode voltage regulator delivering a precise 5.0V output with ≤1.4V dropout at full load, thermal shutdown protection, and ±1% load regulation (40–50mV) across 0–5A. It uses TO252-3L surface-mount packaging and supports high-speed bus termination and 3.3V/5V logic supply in VGA cards and embedded power rails.
For engineers reviewing the AP1084D50G-13 datasheet, AP1084D50G-13 pinout, AP1084D50G-13 application, or AP1084D50G-13 equivalent, key selection criteria include dropout voltage under 5A load, thermal resistance (θJA = 73°C/W), fixed 5.0V output tolerance (±2%), minimum 10µF output capacitance requirement, and compatibility with aluminum/tantalum capacitors having 0.15–20Ω ESR.
Technical Context
The AP1084D50G-13 integrates a precision 1.25V bandgap reference, current-limiting circuitry, and thermal shutdown into a monolithic PMOS pass transistor architecture. Its fixed-output configuration eliminates external feedback resistors, simplifying layout for stable 5.0V generation from 6.5–12V inputs.
It achieves fast transient response via internal compensation optimized for ≥10µF output capacitance with ESR between 0.15Ω and 20Ω. The device regulates only when VIN exceeds VOUT by ≥1.4V and maintains output stability over junction temperatures from 0°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00V ±2% (4.90–5.10V) at 10mA, 25°C - ensures compliance with 5V TTL/CMOS logic supply tolerances. |
| Dropout Voltage | 1.4V max at 5.0A load - enables regulation from 6.5V input down to 5V output without dropout failure. |
| Output Current | 5.0A continuous - supports high-current FPGA I/O banks, GPU memory interfaces, and multi-rail board supplies. |
| Thermal Shutdown | Activates at 150°C junction temperature - prevents permanent damage during sustained overload or poor heatsinking. |
| Load Regulation | 40–50mV (0–5A, 25°C) - limits output deviation to <1% across full load range, critical for noise-sensitive analog subsystems. |
| Line Regulation | 0.2% (VIN = VOUT+1.5V to 12V) - minimizes output drift due to input rail variation in unregulated DC-DC front-ends. |
| Reference Voltage | 1.250V typical (1.225–1.275V) - defines accuracy baseline for fixed-output trimming and internal error amplifier operation. |
Pinout & Package
AP1084D50G-13 uses the TO252-3L (DPAK) thermally enhanced surface-mount package with exposed thermal pad (Tab = VOUT). Pin 1 is Adj/GND (grounded internally for fixed mode), Pin 2 is VOUT, and Pin 3 is VIN. The tab must be soldered to a large copper pour for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Adj/GND) | Ground reference (fixed mode) | Internally connected to ground; no external connection required - eliminates feedback network complexity vs adjustable variants. |
| Pin 2 (VOUT) | Regulated output terminal | Delivers 5.0V to load; tab is electrically tied to this pin - requires direct thermal coupling to PCB copper for θJA = 73°C/W performance. |
| Pin 3 (VIN) | Input supply terminal | Accepts 6.5–12V DC input; must remain ≥1.4V above VOUT to sustain regulation - mandates proper input bulk capacitance placement. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 1.4V max dropout enables efficient 5V generation from 7–12V intermediate rails, reducing power loss vs legacy linear regulators. |
| Integrated thermal protection | 150°C shutdown threshold prevents catastrophic failure during short-circuit or inadequate heatsinking - eliminates need for external thermal sensors. |
| Stable with standard capacitors | Compatible with 10µF aluminum/tantalum caps (0.15–20Ω ESR) - avoids costly low-ESR ceramics while ensuring transient stability. |
| Fast transient response | Sub-100µs recovery from 0→5A load steps - maintains voltage within ±50mV for DDR memory termination and high-speed logic rails. |
| Lead-free & RoHS compliant | Green molding compound (no Br/Sb) and lead-free finish - meets EU Directive 2002/95/EC for environmentally constrained designs. |
Applications
| VGA Graphics Card Power | FPGA I/O Bank Supply |
|---|---|
|
Use Scenario: Providing clean 5V power to analog video DACs and digital timing circuits on discrete graphics cards. IC Role / Device Role / Timing Role: Primary 5V LDO regulator sourcing up to 5A for pixel clock drivers and RAMDAC circuitry. Use Value: 1.4V dropout allows use of 7V–9V board-level DC-DC outputs, while ±50mV load regulation prevents color banding or sync jitter. |
Use Scenario: Delivering stable 5V to FPGA I/O banks interfacing with legacy parallel buses or LVDS transceivers. IC Role / Device Role / Timing Role: Fixed-output LDO supplying configurable I/O voltage for mixed-voltage FPGA designs. Use Value: Fast transient response (<100µs) suppresses ground bounce during simultaneous switching output (SSO) events, preserving signal integrity. |
| Industrial PLC Backplane | Embedded Media Processor Core |
|
Use Scenario: Generating 5V for isolated CAN/RS-485 transceivers and sensor interface ICs on modular control backplanes. IC Role / Device Role / Timing Role: Centralized low-noise 5V rail generator with thermal fault containment for field-deployed equipment. Use Value: Thermal shutdown and current limiting prevent cascade failures in dusty, high-temperature enclosures where airflow is restricted. |
Use Scenario: Powering video decode accelerators and HDMI PHY circuitry in set-top boxes and IP cameras. IC Role / Device Role / Timing Role: Secondary 5V regulator downstream of primary DC-DC, filtering switching noise for analog video paths. Use Value: Good noise rejection (>60dB at 1kHz) and tight line regulation (0.2%) eliminate visible artifacts in decoded video streams. |
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 |
|---|---|---|---|
| AP1084K50G-13 | Same electrical specs, but TO263-3L (D2PAK) package with lower θJA (60°C/W) and larger thermal pad. | Better suited for higher ambient temperatures or higher continuous power dissipation (>3W). | Select when board space allows larger footprint and thermal performance >73°C/W is required. |
| LD1085V50TR | STMicroelectronics 5A LDO; 1.5V dropout (vs 1.4V), ±2% VOUT tolerance, TO220 package (θJA = 78°C/W). | Requires heatsink for >2.5A loads; less efficient at low VIN–VOUT differentials. | Choose if TO220 through-hole mounting is mandated or if ST's qualification pedigree is required for industrial certification. |
Compared with AP1084K50G-13 and LD1085V50TR, AP1084D50G-13 offers the best balance of compact surface-mount form factor, lowest thermal resistance among DPAK-packaged 5A LDOs, and tightest dropout specification - making it optimal for space-constrained, convection-cooled embedded systems.
Availability
AP1084D50G-13 is available at Aetrix Electronics and suitable for VGA graphics card power, FPGA I/O bank supply, and industrial PLC backplane applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AP1084D50G-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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP1084 series belongs to Diodes' high-current LDO regulator product line, engineered specifically for low-voltage IC supply in high-speed bus termination, logic rails, and graphics subsystems where dropout, thermal robustness, and transient response are critical.
FAQ
What is the minimum input voltage required for AP1084D50G-13 to regulate at 5.0V?
The AP1084D50G-13 requires VIN ≥ 6.5V to maintain regulation at full 5A load, based on its maximum 1.4V dropout specification. At lighter loads, regulation begins at VIN = VOUT + 1.3V (6.3V), but 6.5V ensures margin across temperature and process variation per datasheet conditions.
Can AP1084D50G-13 be used without an output capacitor?
No. A minimum 10µF output capacitor with ESR between 0.15Ω and 20Ω is mandatory for stability and transient response. Omitting it causes oscillation, excessive output ripple, and potential thermal runaway - the device will not function reliably without this capacitor.
Is AP1084D50G-13 pin-compatible with adjustable AP1084 variants?
Yes, all AP1084 variants share identical TO252-3L pinout: Pin 1 = Adj/GND, Pin 2 = VOUT, Pin 3 = VIN. However, fixed versions internally ground Pin 1, so external resistor networks must be omitted - no hardware change is needed beyond removing R1/R2.
Does AP1084D50G-13 support reverse polarity protection?
No. The device lacks integrated reverse-voltage protection. If input polarity reversal is possible in the system, an external series Schottky diode (e.g., 1N5822) must be added at VIN to prevent latch-up or permanent damage to the internal pass transistor.
AP1084D50G-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
AP1084D50G-13 FAQ
1.How can I place an order for AP1084D50G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1084D50G-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 AP1084D50G-13 reliable?
The price and inventory of AP1084D50G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1084D50G-13 is usually 5 days.
3.What payment methods are accepted for AP1084D50G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1084D50G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1084D50G-13?
AP1084D50G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1084D50G-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 AP1084D50G-13?
For technical support, including AP1084D50G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1084D50G-13 requirements.
6.How does Aetrix verify that AP1084D50G-13 is sourced from the original manufacturer or authorized distributors?
All AP1084D50G-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 AP1084D50G-13 meets industry standards.
7.What is the process for return or replacement of AP1084D50G-13?
All AP1084D50G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1084D50G-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 AP1084D50G-13 part is unused and in its original packaging.
Return procedure for AP1084D50G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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