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Diodes Incorporated AP7366EA-39SN-7
- Part No.:
- AP7366EA-39SN-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7366EA-39SN-7.pdf
- Description:
- IC REG LINEAR 3.9V 600MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7366EA-39SN-7 from Diodes Incorporated is a fixed-output 3.9V, 600mA low-dropout linear regulator with enable control, 60μA quiescent current, and 300mV dropout at full load. It integrates current limit, thermal shutdown, and stable operation with 1μF ceramic output capacitance-designed for power-sensitive applications including FPGA I/O rails and portable battery-powered systems.
For engineers reviewing the AP7366EA-39SN-7 datasheet, AP7366EA-39SN-7 pinout, AP7366EA-39SN-7 application, or AP7366EA-39SN-7 equivalent, key selection criteria include its 3.9V fixed output accuracy (±1%), fast 150μs start-up time, 75dB PSRR at 1kHz, and U-DFN2020-6 package thermal resistance of 46.2°C/W for compact high-efficiency designs.
Technical Context
The AP7366EA-39SN-7 implements a PMOS pass transistor architecture with internal 0.8V bandgap reference and error amplifier, enabling precise 3.9V regulation across input voltages from 2.2V to 6V. Its EN pin provides active-high logic control with 1.0V VIH threshold and 3MΩ internal pull-down resistor.
Thermal protection activates at +150°C junction temperature with +20°C hysteresis, while short-circuit current is clamped to 250mA. The device maintains stability without minimum load and supports ultra-low ESR ceramic capacitors down to 1μF on both input and output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.9V ±1% over -40°C to +85°C ambient - ensures reliable core/I/O rail compliance for 3.3V–4.0V interface domains. |
| Max Output Current | 600mA continuous - sufficient for powering FPGA I/O banks, microcontroller peripherals, or sensor signal chains. |
| Dropout Voltage | 190mV typical at 600mA (VIN ≥ 4.09V) - enables operation from single-cell Li-ion (3.0–4.2V) or 5V bus with margin. |
| Quiescent Current | 60μA typical - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
| Start-up Time | 150μs - supports rapid power sequencing in multi-rail systems and dynamic voltage scaling scenarios. |
| Thermal Resistance θJA | 46.2°C/W (U-DFN2020-6) - allows 1.2W dissipation before thermal shutdown under 25°C ambient with minimal PCB copper. |
Pinout & Package
AP7366EA-39SN-7 is housed in a 2.0mm × 2.0mm, 0.65mm height U-DFN2020-6 package with wettable flank leads and exposed thermal pad. Pin 1 (EN) and Pin 3 (IN) are on the same side; Pin 4 (OUT) and Pin 2 (GND) provide low-inductance power paths. Thermal pad must be soldered to PCB ground plane for rated performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high logic control: drives regulator ON when ≥1.0V; internal 3MΩ pull-down ensures default OFF state if left floating. |
| 2 (GND) | Ground reference | Primary return path for load current and internal bias; must connect directly to low-impedance PCB ground plane. |
| 3 (IN) | Input voltage supply | Accepts 2.2V–6V; requires ≥1μF ceramic bypass capacitor placed within 2mm to suppress supply ripple and transients. |
| 4 (OUT) | Regulated output | Delivers stable 3.9V; requires ≥1μF ceramic capacitor with ESR <100mΩ placed adjacent to pin for transient stability. |
| 5 (NC) | No connection | Internally unconnected; may be left floating or tied to GND for mechanical reinforcement-no electrical impact. |
| 6 (ADJ) | Feedback reference | Internally tied to 0.8V reference for fixed-output variants; not used in AP7366EA-39SN-7 and must remain unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| Low-IQ operation | 60μA quiescent current enables >1-year battery life in coin-cell-powered IoT sensors with 10μA average system load. |
| Fast transient response | Load step recovery within 200μs (50mA ↔ 500mA) at 3.9V output - prevents brown-out during burst-mode MCU operation. |
| Integrated protection | Current limit (≈1A), short-circuit clamp (250mA), and thermal shutdown (+150°C) eliminate need for external fault management circuitry. |
| Small-footprint packaging | U-DFN2020-6 occupies only 4mm² board area - ideal for space-constrained wearables and ultra-thin consumer devices. |
| High PSRR at audio frequencies | 75dB rejection at 1kHz reduces audible noise coupling into analog audio subsystems powered from noisy digital rails. |
Applications
| Portable Medical Sensors | FPGA I/O Power |
|---|---|
Use Scenario: Continuous glucose monitor with Bluetooth LE radio and analog front-end. IC Role / Device Role / Timing Role: Primary 3.9V LDO supplying ADC reference, op-amp bias, and BLE transceiver I/O. Use Value: 60μA IQ extends CR2032 battery life beyond 18 months; 150μs start-up synchronizes with BLE connection windows. |
Use Scenario: Low-power Artix-7 FPGA in industrial edge node with configurable I/O banks. IC Role / Device Role / Timing Role: Dedicated 3.9V rail for HSTL or SSTL I/O termination and level-shifting interfaces. Use Value: ±1% output accuracy ensures setup/hold timing margins; 75dB PSRR prevents jitter injection from switching DC/DC converters. |
| Smart Home Motion Detectors | USB-C Peripheral Power |
Use Scenario: PIR-based occupancy sensor with ultra-low-power MCU and RF mesh transmitter. IC Role / Device Role / Timing Role: Always-on 3.9V supply for PIR signal conditioning and MCU RTC domain. Use Value: No-load stability eliminates need for dummy loads; thermal shutdown protects against enclosure overheating in sealed enclosures. |
Use Scenario: USB-C powered docking station delivering 3.9V to external display interface ICs. IC Role / Device Role / Timing Role: Post-regulator for clean 3.9V from buck converter's 5V USB-PD rail. Use Value: 300mV dropout preserves headroom during 5V-to-3.9V conversion; 1μF ceramic compatibility simplifies layout near high-speed video traces. |
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 |
|---|---|---|---|
| MCP1703T-3902E/MB | 3.9V fixed, 250mA max, 4μA IQ, SOT-23-5 package, higher dropout (500mV @ 250mA) | Limited to sub-250mA loads; better for ultra-low-power sleep modes but unsuitable for FPGA I/O bursts. | Select when quiescent current is critical and load current remains below 250mA. |
| Torex XC6210B392MR-G | 3.9V fixed, 600mA, 15μA IQ, SOT-25 package, lower PSRR (60dB @ 1kHz), no EN pin | Requires external enable circuitry; smaller thermal footprint but less noise immunity in mixed-signal systems. | Choose for cost-sensitive, space-constrained designs where EN control and PSRR are non-critical. |
Compared with MCP1703T-3902E/MB and XC6210B392MR-G, AP7366EA-39SN-7 uniquely balances 600mA drive capability, 60μA IQ, integrated EN control, and 75dB PSRR in a thermally efficient 2×2mm package-making it optimal for compact, high-transient, battery-aware systems requiring precise 3.9V regulation.
Availability
AP7366EA-39SN-7 is available at Aetrix Electronics and suitable for portable medical sensors, FPGA I/O power, smart home motion detectors, and USB-C peripheral power requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP7366EA-39SN-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' high-performance LDO regulator product line, engineered for ultra-low quiescent current and fast transient response in battery-powered and space-constrained electronics.
FAQ
What is the maximum input voltage for AP7366EA-39SN-7?
The absolute maximum input voltage is 6.5V, but the recommended operating range is 2.2V to 6.0V. Operation above 6.0V risks exceeding safe power dissipation limits, especially at high ambient temperatures or heavy load conditions. For 3.9V output, VIN must exceed 4.09V to maintain regulation at 600mA due to the 190mV typical dropout.
Can AP7366EA-39SN-7 operate without an output capacitor?
No. A minimum 1μF ceramic output capacitor is required for stability and transient response. The device is not internally compensated for no-capacitor operation. Omitting the capacitor causes oscillation and output voltage collapse under load. X5R/X7R dielectrics with ≤100mΩ ESR are recommended; placement within 2mm of OUT and GND pins is mandatory.
Is the ADJ pin functional in the AP7366EA-39SN-7 variant?
No. AP7366EA-39SN-7 is a fixed-output version; the ADJ pin (Pin 6) is internally connected to the 0.8V reference and must remain unconnected in the circuit. Using it as a feedback node would disrupt regulation. This pin is only active in adjustable-output variants (e.g., AP7366EA-ADJSN-7).
How does thermal shutdown behave during sustained overload?
When junction temperature reaches +150°C, the output disables and remains off until temperature drops to approximately +130°C (20°C hysteresis). Under continuous overload, this causes on/off cycling-visible as output voltage pulsing. To avoid cycling, ensure PCB thermal pad is fully soldered to ≥1cm² copper area and ambient temperature stays below +70°C at 600mA load.
AP7366EA-39SN-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-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):
- 3.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.19V @ 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:
- U-DFN2020-6
AP7366EA-39SN-7 FAQ
1.How can I place an order for AP7366EA-39SN-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7366EA-39SN-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-39SN-7 reliable?
The price and inventory of AP7366EA-39SN-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-39SN-7 is usually 5 days.
3.What payment methods are accepted for AP7366EA-39SN-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7366EA-39SN-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7366EA-39SN-7?
AP7366EA-39SN-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7366EA-39SN-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-39SN-7?
For technical support, including AP7366EA-39SN-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7366EA-39SN-7 requirements.
6.How does Aetrix verify that AP7366EA-39SN-7 is sourced from the original manufacturer or authorized distributors?
All AP7366EA-39SN-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-39SN-7 meets industry standards.
7.What is the process for return or replacement of AP7366EA-39SN-7?
All AP7366EA-39SN-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7366EA-39SN-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-39SN-7 part is unused and in its original packaging.
Return procedure for AP7366EA-39SN-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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