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Diodes Incorporated AP1084D25G-13
- Part No.:
- AP1084D25G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AP1084D25G-13.pdf
- Description:
- IC REG LINEAR 2.5V 5A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
AP1084D25G-13 from Diodes Incorporated is a 5A low-dropout linear regulator in TO252-3L package, delivering fixed 2.5V output with ≤1.4V dropout at full load, ±2% output voltage tolerance at 10mA, and built-in thermal shutdown and current limiting. It supports high-speed bus termination and low-current 3.3V logic supply applications requiring stable low-voltage regulation from 4–12V input sources.
For engineers reviewing the AP1084D25G-13 datasheet, AP1084D25G-13 pinout, AP1084D25G-13 application, or AP1084D25G-13 equivalent, key selection criteria include dropout voltage under 5A load, thermal resistance (θJA = 73°C/W), output capacitor stability requirements (≥10µF, 0.15–20Ω ESR), and fixed-mode GND/Adj pin configuration.
Technical Context
The AP1084D25G-13 operates as a fixed-output LDO with internal 1.25V reference and precision resistor network setting VOUT = 2.500V (±2% at 10mA). Its control loop maintains regulation with only 1.4V VIN–VOUT differential at 5A, enabling efficient conversion from 4.8–12V inputs to 2.5V outputs.
Thermal protection activates at 150°C junction temperature, and current limiting engages at ≥5.1A. Stability relies on a minimum 10µF output capacitor with ESR between 0.15Ω and 20Ω; fast transient response is achieved without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.500V ±2% at 10mA - ensures compatibility with 2.5V logic families and DDR memory I/O rails. |
| Dropout Voltage | 1.4V max at 5A load - enables stable 2.5V output from as low as 3.9V input, reducing power loss vs. higher-dropout regulators. |
| Output Current | 5.0A continuous - supports high-current FPGA core supplies and VGA card power rails. |
| Line Regulation | 0.2% typical - minimizes output variation across 4.8–12V input range, critical for noise-sensitive analog subsystems. |
| Load Regulation | 20–25mV over 0–5A - maintains tight voltage accuracy during dynamic CPU/GPU load transients. |
| Thermal Shutdown | 150°C junction activation - prevents permanent damage during sustained overload or inadequate heatsinking. |
| Package Thermal Resistance | θJA = 73°C/W (TO252-3L) - defines required PCB copper area and airflow for safe 5A operation at ambient ≤70°C. |
Pinout & Package
AP1084D25G-13 uses the TO252-3L (DPAK) surface-mount package with exposed thermal pad (Tab = VOUT). The 3-pin configuration supports fixed-mode operation without external resistors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Adj/GND) | Ground reference (fixed mode) | Internally tied to GND for fixed 2.5V output; no external resistor needed - simplifies layout and eliminates adjustment error. |
| Pin 2 (VOUT) | Regulated output | Delivers 2.5V at up to 5A; Tab is electrically connected to this pin - requires direct thermal and electrical connection to ground plane for heat dissipation. |
| Pin 3 (VIN) | Input supply | Accepts 4.8–12V DC input; must remain ≥1.4V above VOUT to sustain regulation - dictates minimum input voltage in battery-powered systems. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout at full load | 1.4V max @ 5A - enables use with 5V input rails while delivering clean 2.5V, reducing heat generation by ~3W vs. 2V-drop alternatives. |
| Integrated protection | Thermal shutdown + current limiting - eliminates need for external fault management circuitry in space-constrained industrial controllers. |
| Stability with standard capacitors | Supports 10µF aluminum electrolytic (0.15–20Ω ESR) - avoids costly low-ESR tantalum or polymer caps in cost-sensitive consumer designs. |
| Fast transient response | ≤50µs recovery from 0→5A load step - meets Intel VRE spec for VRM applications without additional output capacitance. |
| Green, RoHS-compliant packaging | Lead-free TO252-3L with halogen-free molding compound - satisfies environmental compliance for EU and Asia-Pacific market deployments. |
Applications
| High-Speed Bus Termination | VGA Card Power Supply |
|---|---|
|
Use Scenario: Termination of PCI Express or DDR2/3 data lines requiring precise 2.5V bias voltage under dynamic switching loads. IC Role / Device Role / Timing Role: Provides low-noise, low-drift 2.5V reference rail directly adjacent to termination resistors to minimize signal reflection and jitter. Use Value: 20–25mV load regulation ensures <±1% voltage deviation during 0–5A transient steps, preserving signal integrity at >800MT/s data rates. |
Use Scenario: Primary 2.5V power rail for GPU memory interface and display controller ICs on discrete graphics cards. IC Role / Device Role / Timing Role: Delivers stable 2.5V at up to 5A to support burst-mode memory access with sub-100ns load transitions. Use Value: 1.4V dropout allows direct derivation from 5V auxiliary rail, eliminating intermediate conversion stages and reducing BOM count by one DC-DC stage. |
| Low-Current 3.3V Logic Support | FPGA Core Voltage Auxiliary Rail |
|
Use Scenario: Secondary 2.5V supply for level-shifting buffers and I²C/SPI peripherals interfacing with 3.3V microcontrollers. IC Role / Device Role / Timing Role: Supplies clean, regulated 2.5V to interface ICs where noise immunity and voltage accuracy impact communication reliability. Use Value: 0.2% line regulation prevents output drift across wide input variations (e.g., 5V USB +10%/−20%), ensuring robust multi-voltage system interoperability. |
Use Scenario: Backup or auxiliary 2.5V rail for FPGA configuration memory, JTAG debug circuits, or partial-reconfiguration logic blocks. IC Role / Device Role / Timing Role: Provides always-on, low-quiescent 2.5V supply independent of main core rail sequencing to enable hot-swap and firmware update functions. Use Value: Built-in thermal shutdown prevents latch-up during FPGA bitstream loading surges, enhancing field reliability without external monitoring. |
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 |
|---|---|---|---|
| AP1084K25G-13 | Same electrical specs, TO263-3L (D²PAK) package with θJA = 60°C/W - lower thermal resistance enables higher ambient operation without heatsink. | Better suited for convection-cooled industrial enclosures where PCB real estate permits larger footprint. | Select when thermal margin is constrained and board space allows D²PAK; otherwise AP1084D25G-13 offers superior density. |
| LD1085V25TR | STMicroelectronics 5A LDO, fixed 2.5V, TO220-3L package, 1.5V dropout at 5A, ±2% tolerance - slightly higher dropout and different pinout (VOUT/VIN/GND). | Requires mechanical heatsink due to θJA = 78°C/W; not drop-in compatible due to reversed pin 1/3 assignment. | Choose only if legacy ST design reuse is required; AP1084D25G-13 provides better thermal performance and smaller footprint. |
Compared with AP1084K25G-13 and LD1085V25TR, AP1084D25G-13 delivers optimal balance of thermal performance (73°C/W), compact TO252-3L footprint, and fixed-mode simplicity - making it preferred for space-limited, moderately heated embedded systems where 2.5V rail stability under 5A load is critical.
Availability
AP1084D25G-13 is available at Aetrix Electronics and suitable for high-speed bus termination, VGA card power supply, and low-current 3.3V logic support applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for AP1084D25G-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 product line delivers high-current, low-dropout linear regulators optimized for voltage-sensitive digital logic rails and graphics subsystems - designed to replace inefficient switching solutions where low noise and fast transient response are mandatory.
FAQ
What is the minimum input voltage required for AP1084D25G-13 to regulate 2.5V output at 5A?
The AP1084D25G-13 requires VIN ≥ VOUT + 1.4V = 3.9V to maintain regulation at full 5A load. At lighter loads, dropout decreases - e.g., 1.3V at 1A - but design margin should assume 1.4V worst-case per datasheet specification.
Can AP1084D25G-13 be used in adjustable mode?
No. AP1084D25G-13 is factory-configured for fixed 2.5V output; its Pin 1 (Adj/GND) is internally connected to ground. For adjustable operation, select AP1084DxxG-13 with "blank" suffix (e.g., AP1084DG-13) and external R1/R2 divider.
What output capacitor is required for stability with AP1084D25G-13?
A minimum 10µF aluminum electrolytic capacitor with ESR between 0.15Ω and 20Ω is required from VOUT to GND. Tantalum or polymer capacitors meeting this ESR range are also acceptable; ceramic-only solutions are unstable without series resistance.
Is AP1084D25G-13 pin-compatible with other TO252-3L LDOs like MIC29500-2.5WU?
No. AP1084D25G-13 uses VIN–VOUT–GND pinout (Pin 3–2–1), whereas MIC29500-2.5WU uses VIN–GND–VOUT. Direct replacement would cause short-circuit; PCB layout and schematic must match Diodes' TO252-3L assignment.
AP1084D25G-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):
- 2.5V
- 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
AP1084D25G-13 FAQ
1.How can I place an order for AP1084D25G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1084D25G-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 AP1084D25G-13 reliable?
The price and inventory of AP1084D25G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1084D25G-13 is usually 5 days.
3.What payment methods are accepted for AP1084D25G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1084D25G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1084D25G-13?
AP1084D25G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1084D25G-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 AP1084D25G-13?
For technical support, including AP1084D25G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1084D25G-13 requirements.
6.How does Aetrix verify that AP1084D25G-13 is sourced from the original manufacturer or authorized distributors?
All AP1084D25G-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 AP1084D25G-13 meets industry standards.
7.What is the process for return or replacement of AP1084D25G-13?
All AP1084D25G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1084D25G-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 AP1084D25G-13 part is unused and in its original packaging.
Return procedure for AP1084D25G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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