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Diodes Incorporated AP7366EA-39W5-7
- Part No.:
- AP7366EA-39W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7366EA-39W5-7.pdf
- Description:
- LDO CMOS HICURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,297
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Product details
Overview
AP7366EA-39W5-7 from Diodes Incorporated is a 600mA fixed-output low-dropout linear regulator with 3.9V output, 60μA quiescent current, 300mV dropout at full load, and integrated enable (EN) control. It operates from 2.2V to 6V input and delivers stable power to FPGA I/O rails, notebook CPU cores, and battery-powered sensor nodes requiring low-noise, fast transient response.
For engineers reviewing the AP7366EA-39W5-7 datasheet, AP7366EA-39W5-7 pinout, AP7366EA-39W5-7 application, or AP7366EA-39W5-7 equivalent, this page provides verified package mapping (SOT25), confirmed thermal shutdown threshold (+150°C), PSRR (75dB @ 1kHz), start-up time (150μs), and EN logic thresholds (VIH = 1.0V, VIL = 0.3V) - all critical for portable and embedded power design validation.
Technical Context
The AP7366EA-39W5-7 integrates a PMOS pass element, band-gap reference, error amplifier, and thermal shutdown circuitry in a single SOT25 package. Its fixed 3.9V output eliminates external feedback resistors, while the EN pin enables precise system-level power sequencing with active-high logic control.
It achieves excellent load and line transient response due to internal compensation optimized for 1μF ceramic output capacitors, and maintains regulation down to 0mA load. The 75dB PSRR at 1kHz and ±100ppm/°C output voltage temperature coefficient support noise-sensitive analog and RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.9V ±1% accuracy ensures reliable biasing of 3.3V–4.0V logic interfaces without calibration. |
| Max Output Current | 600mA continuous delivery supports mid-power digital loads like FPGA I/O banks or microcontroller peripherals. |
| Quiescent Current | 60μA typical enables >1-year battery life in always-on IoT sensors powered by coin cells. |
| Dropout Voltage | 300mV at 600mA allows operation from 4.2V Li-ion batteries down to 3.9V output - critical for end-of-discharge runtime extension. |
| PSRR | 75dB at 1kHz suppresses switching noise from adjacent DC-DC converters feeding mixed-signal SoCs. |
| Start-up Time | 150μs enables rapid wake-from-sleep transitions in portable devices without compromising low-IQ. |
| Thermal Shutdown | +150°C trip point with +20°C hysteresis prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
SOT25 package (3.0mm × 2.8mm × 1.3mm) with exposed pad not electrically connected; RoHS-compliant matte tin plating; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2.2V–6V; requires ≥1μF ceramic bypass capacitor placed adjacent to pin for stability and noise rejection. |
| 2 - GND | Power ground reference | Low-impedance return path for input/output currents; must connect directly to solid ground plane under device. |
| 3 - EN | Enable control input | Active-high logic: drives output ON when ≥1.0V; pulls to GND or leaves floating only if permanently enabled (tie to IN). |
| 4 - NC | No internal connection | Unbonded pin; must remain unconnected and un-routed on PCB to avoid parasitic coupling or mechanical stress. |
| 5 - OUT | Regulated output voltage | Delivers 3.9V ±1%; requires ≥1μF ceramic capacitor at pin with minimal trace length to GND for transient immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 60μA enables >5-year shelf life in battery-backed real-time clocks and memory retention circuits. |
| Fast transient response | Stabilizes within 200μs after 100mA–500mA load steps - preserves signal integrity in burst-mode wireless transceivers. |
| Low-ESR capacitor compatibility | Stable with 1μF ceramic output capacitor only - eliminates need for costly tantalum or polymer alternatives. |
| Integrated protection | Current limit (~1A), short-circuit clamp (250mA), and thermal shutdown prevent field failures in unattended industrial nodes. |
| Wide input range | 2.2V–6V operation supports direct connection to single-cell Li-ion, USB VBUS, or multi-cell alkaline stacks. |
Applications
| FPGA I/O Power Rail | Notebook CPU Core Supply |
|---|---|
Use Scenario: Powering 3.3V–4.0V I/O banks in Xilinx Artix-7 FPGAs during configuration and high-speed data transfer. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 3.9V bias with fast load-step recovery to maintain signal eye margin. Use Value: 75dB PSRR rejects noise from adjacent switching regulators, while 150μs start-up aligns with FPGA configuration timing windows. |
Use Scenario: Providing auxiliary 3.9V supply to Intel Core i3/i5 CPU voltage identification (VID) circuits and embedded controller (EC) peripherals. IC Role / Device Role / Timing Role: Secondary regulated rail enabling precise VID scaling and EC firmware updates without main VRM dependency. Use Value: 60μA IQ minimizes standby power draw; 300mV dropout extends operational window during battery-only mode below 4.2V. |
| Industrial Sensor Node | Portable Medical Monitor |
Use Scenario: Powering ultra-low-power ADCs, RS-485 transceivers, and LoRaWAN modems in remote environmental monitoring units. IC Role / Device Role / Timing Role: Main system regulator converting 3.6V Li-SOCl₂ primary cell output to stable 3.9V for analog front-end and radio subsystems. Use Value: No-load stability and ±100ppm/°C drift ensure accurate sensor readings across -40°C to +85°C ambient without recalibration. |
Use Scenario: Supplying ECG front-end amplifiers and OLED display drivers in handheld patient monitors operating from rechargeable Li-ion packs. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital switching noise, synchronized via EN to measurement acquisition cycles. Use Value: 1μF ceramic stability reduces BOM count and board area; thermal shutdown prevents overheating during extended clinical use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3902E/TT | 300mA max output, 2.0μA IQ, no EN pin, SOT23-3 package | Limited to ultra-low-power MCU peripherals; lacks enable control for power sequencing | Select only when <300mA load and minimal IQ dominate over EN functionality and PSRR. |
| Torex XC6210B392MR-G | 500mA max output, 1.0μA IQ, 400mV dropout at 500mA, SOT25 | Lower IQ but higher dropout limits usable input range; PSRR unspecified | Prefer for energy-harvesting systems where IQ is critical and input voltage margin exceeds 400mV. |
Compared with MCP1700T-3902E/TT and XC6210B392MR-G, the AP7366EA-39W5-7 uniquely balances 600mA drive capability, 60μA IQ, 300mV dropout, and EN control in SOT25 - making it optimal for portable systems requiring both performance headroom and battery longevity.
Availability
AP7366EA-39W5-7 is available at Aetrix Electronics and suitable for FPGA I/O power, notebook CPU auxiliary supplies, and industrial sensor node designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AP7366EA-39W5-7 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP7366EA belongs to Diodes' low-quiescent-current LDO family, designed specifically for battery-powered and space-constrained embedded systems demanding high efficiency, fast transient response, and robust fault protection.
FAQ
What is the minimum input voltage required for AP7366EA-39W5-7 to regulate 3.9V output at 600mA?
The minimum input voltage is 4.2V, calculated as VOUT + VDROPOUT = 3.9V + 0.3V. At 600mA load and +25°C, the datasheet specifies 300mV dropout; derating for temperature and tolerance yields 4.2V as the practical lower limit for full-load regulation.
Can AP7366EA-39W5-7 operate without an output capacitor?
No - a minimum 1μF ceramic capacitor is mandatory at the OUT pin for stability and transient response. Omitting it causes oscillation and output voltage collapse under load, as confirmed by the "Output Capacitor" section in DS43719 Rev. 1-2, page 10.
Is the NC pin on AP7366EA-39W5-7 electrically isolated or internally tied?
The NC pin (Pin 4 in SOT25) is unconnected internally - no bond wire, no silicon connection. The datasheet explicitly states "No Internal Connection" and confirms leaving it floating has no functional impact, but routing or soldering to it is prohibited per mechanical reliability guidelines.
Does AP7366EA-39W5-7 support reverse-voltage protection?
No - the device lacks reverse-battery or reverse-polarity protection. Applying negative voltage to IN or OUT relative to GND may cause latch-up or permanent damage, as indicated by the Absolute Maximum Ratings table specifying only positive VIN and VOUT limits.
AP7366EA-39W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 3.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.29V @ 600mA
- Current - Output:
- 600mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB ~ 55dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7366EA-39W5-7 FAQ
1.How can I place an order for AP7366EA-39W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7366EA-39W5-7 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 AP7366EA-39W5-7 reliable?
The price and inventory of AP7366EA-39W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7366EA-39W5-7 is usually 5 days.
3.What payment methods are accepted for AP7366EA-39W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7366EA-39W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7366EA-39W5-7?
AP7366EA-39W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7366EA-39W5-7 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 AP7366EA-39W5-7?
For technical support, including AP7366EA-39W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7366EA-39W5-7 requirements.
6.How does Aetrix verify that AP7366EA-39W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7366EA-39W5-7 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 AP7366EA-39W5-7 meets industry standards.
7.What is the process for return or replacement of AP7366EA-39W5-7?
All AP7366EA-39W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7366EA-39W5-7, 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 AP7366EA-39W5-7 part is unused and in its original packaging.
Return procedure for AP7366EA-39W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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