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Diodes Incorporated AP7361-25FGE-7
- Part No.:
- AP7361-25FGE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AP7361-25FGE-7.pdf
- Description:
- IC REG LINEAR 2.5V 1A 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,556
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Product details
Overview
AP7361-25FGE-7 from Diodes Incorporated is a 1A fixed-output (2.5V) ultra-low dropout linear regulator in U-DFN3030-8 package, featuring 70µA typical quiescent current, 500mV dropout at 1A load, and integrated enable control. It delivers stable power to FPGA I/O rails, portable audio subsystems, and battery-powered microcontroller cores where low thermal footprint and fast transient response are critical.
For engineers reviewing the AP7361-25FGE-7 datasheet, AP7361-25FGE-7 pinout, AP7361-25FGE-7 application, or AP7361-25FGE-7 equivalent, key selection criteria include dropout voltage at full load, thermal resistance (θJA = 70°C/W), EN logic thresholds (VIL ≤ 0.3V, VIH ≥ 1.0V), and ceramic capacitor stability with ≥2.2µF output capacitance.
Technical Context
The AP7361-25FGE-7 implements a PMOS pass transistor architecture with internal 0.8V bandgap reference and error amplifier, enabling precise 2.5V regulation across -40°C to +85°C ambient. Its feedback loop is optimized for stability with ceramic capacitors ≥2.2µF and ESR between 10mΩ and 300mΩ.
Enable functionality is implemented via a dedicated EN pin (Pin 5 in U-DFN3030-8) with active-high logic, 0.1µA max leakage, and defined turn-on/turn-off thresholds. Thermal shutdown triggers at ~150°C junction temperature with 20°C hysteresis, while current limiting clamps output to 1.1–1.5A depending on input voltage and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% at 100mA, ±2% over full temperature range - ensures reliable logic-level compatibility for 2.5V I/O domains. |
| Dropout Voltage | 500mV at 1A load - enables operation from 3.0V input while maintaining regulation, critical for single-cell Li-ion or 3.3V rail derating. |
| Quiescent Current | 70µA typical, 90µA max - minimizes standby power loss in always-on battery-backed systems like real-time clocks or sensor nodes. |
| PSRR | 65dB at 1kHz, 45dB at 10kHz - suppresses switching noise from upstream DC-DC converters feeding sensitive analog or RF circuitry. |
| Thermal Shutdown | Triggers at 150°C junction temperature with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Input Voltage Range | 2.2V to 6.0V - supports direct connection to USB 5V, 3.3V LDO outputs, or partially discharged Li-ion batteries (down to ~2.7V). |
| Output Capacitor | Stable with ≥2.2µF ceramic capacitor (10–300mΩ ESR) - eliminates need for bulky tantalum or electrolytic capacitors, reducing board area and cost. |
Pinout & Package
AP7361-25FGE-7 uses the U-DFN3030-8 (3.0mm × 3.0mm, 0.5mm pitch) thermally enhanced package with exposed thermal pad. Pin 1 is OUT, Pin 2 is NC, Pin 3 is ADJ/NC (not used in fixed version), Pin 4 is GND, Pin 5 is EN, Pin 6 is NC, Pin 7 is NC, Pin 8 is IN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 8) | Regulator input supply | Accepts 2.2–6.0V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin to suppress high-frequency noise and ensure stability. |
| OUT (Pin 1) | Regulated 2.5V output | Delivers up to 1A; must connect ≥2.2µF ceramic capacitor directly between OUT and GND to maintain transient response and PSRR performance. |
| GND (Pin 4) | Power ground reference | Common return path for IN, OUT, and EN; must be tied to low-impedance PCB ground plane with multiple vias to thermal pad for thermal management. |
| EN (Pin 5) | Enable control input | Active-high logic: device enabled when voltage ≥1.0V, disabled when ≤0.3V; leakage <0.1µA allows direct MCU GPIO drive without pull-up. |
| ADJ/NC (Pin 3) | Adjust pin / No-connect | Not connected in fixed-output variants; left floating or grounded per layout best practice - no external resistor divider required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 500mV at 1A load enables use with 3.0V input for 2.5V rail - extends usable battery voltage range by ~300mV vs standard LDOs. |
| Low quiescent current | 70µA typical enables >1-year battery life in coin-cell powered IoT sensors operating at 10µA average system current. |
| Fast start-up time | 200µs typical enables rapid power sequencing in multi-rail systems - meets tight timing budgets for FPGA configuration or processor wake-up. |
| Ceramic capacitor stability | Guaranteed stable with ≥2.2µF X5R/X7R ceramic output cap - eliminates ESR requirements and simplifies BOM by removing need for specialized capacitors. |
| Integrated protection | Current limit (1.1–1.5A), short-circuit clamp (~200mA), and thermal shutdown (150°C/130°C) prevent field failures under fault conditions without external components. |
Applications
| Portable Audio Power | FPGA I/O Supply |
|---|---|
|
Use Scenario: Powering DACs, headphone amplifiers, and codec I/O in Bluetooth earbuds with single 3.7V Li-ion cell. IC Role / Device Role / Timing Role: Primary 2.5V LDO delivering clean, low-noise bias to analog signal chain components. Use Value: 65dB PSRR at 1kHz rejects switching noise from buck converter powering digital core, preserving SNR >105dB. |
Use Scenario: Supplying 2.5V I/O banks on Xilinx Artix-7 FPGA in industrial PLC module. IC Role / Device Role / Timing Role: Fixed-output LDO providing regulated I/O voltage with fast load transient response to handle dynamic bus switching. Use Value: 200µs start-up and <1% load regulation (1mA–1A) ensure reliable I/O voltage during FPGA configuration and high-speed data transfers. |
| Battery-Powered MCU Core | Server Management Controller |
|
Use Scenario: Powering ARM Cortex-M4 core and peripherals in handheld medical diagnostic device using 2xAA alkaline cells. IC Role / Device Role / Timing Role: Main 2.5V supply enabling deep-sleep mode with minimal quiescent current draw. Use Value: 70µA IQ extends battery life to 18 months in sleep mode (10µA avg system current), while 500mV dropout sustains regulation down to 2.7V input. |
Use Scenario: Providing 2.5V auxiliary power to BMC (Baseboard Management Controller) in 1U server rack. IC Role / Device Role / Timing Role: Secondary LDO supporting always-on BMC functions independent of main CPU power state. Use Value: EN pin allows BMC firmware to assert controlled power-down during graceful shutdown, while thermal shutdown protects against airflow failure scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2502E/TO | 300mA output, 170mV dropout at 250mA, 2.5µA IQ - lower current, much lower quiescent current. | Suitable only for ultra-low-power microcontrollers or sensors; cannot support 1A FPGA I/O loads. | Select when IQ < 5µA is mandatory and load current ≤300mA; avoid for high-current digital rails. |
| Torex XC6210B252MR-G | 1A output, 250mV dropout at 300mA, 45µA IQ, SOT-25 package - lower dropout at mid-load but higher thermal resistance (θJA = 200°C/W). | Limited to lower ambient temperatures or forced-air cooling due to inferior thermal performance vs U-DFN3030-8. | Select for space-constrained designs needing lowest possible dropout below 300mA; verify thermal margin at 1A in target enclosure. |
Compared with MCP1700-2502E/TO and XC6210B252MR-G, AP7361-25FGE-7 uniquely balances 1A capability, 500mV dropout at full load, 70µA IQ, and 70°C/W thermal resistance in a 3×3mm DFN - making it optimal for thermally constrained, medium-power embedded systems requiring both efficiency and robustness.
Availability
AP7361-25FGE-7 is available at Aetrix Electronics and suitable for FPGA I/O power, portable audio subsystems, and battery-powered MCU applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.
Supply support for AP7361-25FGE-7 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, with design and manufacturing operations across Asia and the Americas.
The AP7361 series belongs to Diodes' high-performance LDO portfolio targeting power-sensitive applications in computing, consumer electronics, and industrial systems - emphasizing low dropout, low IQ, and robust protection features.
FAQ
What is the minimum output capacitance required for stability?
The AP7361-25FGE-7 is stable with a minimum 2.2µF ceramic capacitor (X5R/X7R) on the output, provided its ESR falls within 10mΩ to 300mΩ. Larger values improve transient response but are not required for basic stability. Avoid tantalum or aluminum electrolytic capacitors unless specifically validated.
Can the EN pin be left unconnected?
No - the EN pin must be actively driven. Leaving it floating may cause unpredictable enable/disable behavior due to noise coupling. For always-on operation, tie EN directly to IN. For controlled sequencing, drive with a clean logic signal meeting VIH ≥ 1.0V and VIL ≤ 0.3V specifications.
Is thermal pad connection mandatory?
Yes - the exposed thermal pad on the U-DFN3030-8 package must be soldered to a PCB copper pour with ≥4 thermal vias to an internal or bottom-layer ground plane. Omitting this reduces θJA from 70°C/W to >120°C/W, risking thermal shutdown at currents above ~400mA.
Does the 2.5V output tolerate reverse current flow?
No - the AP7361-25FGE-7 lacks reverse-current blocking. If the output voltage exceeds the input (e.g., during hot-swap or backup battery scenarios), current can flow backward from OUT to IN, potentially damaging upstream circuitry. An external Schottky diode in series with IN is recommended for such use cases.
AP7361-25FGE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB ~ 45dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN3030-8 (Type E)
AP7361-25FGE-7 FAQ
1.How can I place an order for AP7361-25FGE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7361-25FGE-7 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 AP7361-25FGE-7 reliable?
The price and inventory of AP7361-25FGE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7361-25FGE-7 is usually 5 days.
3.What payment methods are accepted for AP7361-25FGE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7361-25FGE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7361-25FGE-7?
AP7361-25FGE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7361-25FGE-7 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 AP7361-25FGE-7?
For technical support, including AP7361-25FGE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7361-25FGE-7 requirements.
6.How does Aetrix verify that AP7361-25FGE-7 is sourced from the original manufacturer or authorized distributors?
All AP7361-25FGE-7 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 AP7361-25FGE-7 meets industry standards.
7.What is the process for return or replacement of AP7361-25FGE-7?
All AP7361-25FGE-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7361-25FGE-7, 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 AP7361-25FGE-7 part is unused and in its original packaging.
Return procedure for AP7361-25FGE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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