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Diodes Incorporated AP7366EA-33SN-7
- Part No.:
- AP7366EA-33SN-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7366EA-33SN-7.pdf
- Description:
- IC REG LINEAR 3.3V 600MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,031
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Product details
Overview
AP7366EA-33SN-7 from Diodes Incorporated is a fixed-output 3.3V, 600mA low-dropout linear regulator in U-DFN2020-6 package, featuring 60μA quiescent current, 300mV dropout at full load, 75dB PSRR at 1kHz, and integrated enable control, thermal shutdown, and current limiting-designed for power rails in portable FPGA I/O and DSP core supplies.
For engineers reviewing the AP7366EA-33SN-7 datasheet, AP7366EA-33SN-7 pinout, AP7366EA-33SN-7 application, or AP7366EA-33SN-7 equivalent, key selection criteria include low-IQ operation under light load, fast 150μs startup, stability with 1μF ceramic output capacitance, and thermal performance in space-constrained PCB layouts using the 2.0mm × 2.0mm U-DFN2020-6 package.
Technical Context
The AP7366EA-33SN-7 integrates a PMOS pass element with bandgap reference, error amplifier, and protection circuitry to deliver precise 3.3V regulation across input voltages from 2.2V to 6V. Its architecture enables stable operation without minimum load and supports ultra-fast transient response due to optimized internal compensation.
Enable logic operates with VIH ≥ 1.0V and VIL ≤ 0.3V, allowing direct interface with 1.8V/3.3V GPIOs. The device uses an internal 0.8V reference for fixed-output variants and includes EN pull-down resistor (3MΩ) and output discharge path (100Ω) for controlled power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% accuracy ensures reliable logic-level compliance for 3.3V I/O domains. |
| Max Output Current | 600mA continuous delivery supports mid-power FPGA banks or microcontroller peripherals. |
| Quiescent Current | 60μA typical enables >1-year battery life in always-on sensor nodes powered by coin cells. |
| Dropout Voltage | 300mV at 600mA allows operation from 3.6V Li-ion cells down to end-of-discharge (~3.3V). |
| PSRR | 75dB at 1kHz suppresses switching noise from adjacent DC-DC converters feeding the LDO input. |
| Startup Time | 150μs enables rapid wake-up from deep-sleep modes in portable applications. |
| Thermal Shutdown | Triggers at +150°C with +20°C hysteresis to prevent permanent damage during sustained overload. |
| Operating Temp | -40°C to +85°C ambient rating supports industrial and automotive cabin electronics deployment. |
Pinout & Package
AP7366EA-33SN-7 is housed in a 2.0mm × 2.0mm, 0.65mm pitch U-DFN2020-6 package with wettable flank leads and exposed thermal pad for enhanced heat dissipation (θJA = 46.2°C/W). Pin 1 is EN, Pin 2 is GND, Pin 3 is IN, Pin 4 is OUT, Pin 5 is NC, Pin 6 is ADJ - but ADJ is internally connected to ground for fixed-output variants, rendering it inactive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 3) | Input voltage supply | Accepts 2.2–6V; requires ≥1μF ceramic bypass capacitor placed adjacent to pin for noise rejection. |
| GND (Pin 2) | Power ground reference | Must be connected to low-impedance PCB ground plane; ties to thermal pad for thermal conduction. |
| EN (Pin 1) | Enable control input | Active-high logic input; internal 3MΩ pull-down ensures default-off state if left unconnected. |
| OUT (Pin 4) | Regulated output | Delivers stable 3.3V; requires ≥1μF ceramic capacitor at pin for transient stability and ESR tolerance. |
| NC (Pin 5) | No internal connection | Electrically isolated; may be left floating or tied to GND for mechanical reinforcement. |
| ADJ (Pin 6) | Feedback reference node | Internally grounded for fixed-output version; not used-no external components required. |
Key Features
| Feature | Design Value |
|---|---|
| Low-IQ operation | 60μA quiescent current minimizes standby power loss in battery-backed real-time clocks and sensors. |
| Fast transient response | Load step recovery within 200μs (50mA→500mA) maintains <20mV output deviation for digital core supplies. |
| Ultra-low ESR capacitor support | Stable with 1μF ceramic output capacitor-reduces BOM count and board area vs. legacy LDOs requiring ≥10μF. |
| Integrated protection | Current limit (~1A), short-circuit clamp (~250mA), and thermal shutdown prevent field failures under fault conditions. |
| Small-footprint packaging | U-DFN2020-6 occupies only 4mm² PCB area-ideal for wearables, IoT edge nodes, and dense SoC power trees. |
Applications
| FPGA I/O Power Rail | DSP Core Supply |
|---|---|
|
Use Scenario: Providing clean, low-noise 3.3V power to FPGA bank I/O pins during configuration and high-speed data transfer. IC Role / Device Role / Timing Role: Primary post-regulator delivering regulated voltage with fast line/load transient response to maintain signal integrity. Use Value: 75dB PSRR at 1kHz attenuates ripple from upstream buck converters, reducing bit-error rates in LVDS interfaces. |
Use Scenario: Powering the 3.3V analog/digital supply domain of a low-power DSP in voice-enabled edge devices. IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling extended battery runtime while supporting burst-mode processing. Use Value: 60μA IQ extends operational life beyond 18 months on a single CR2032 cell in intermittent-sampling applications. |
| Notebook Standby Rail | Industrial Sensor Node |
|
Use Scenario: Generating always-on 3.3V VCCIO for embedded controller (EC) and keyboard controller in laptop sleep states. IC Role / Device Role / Timing Role: Enable-controlled auxiliary regulator activated only during wake events to minimize system leakage. Use Value: 150μs startup time synchronizes power delivery with EC interrupt latency, eliminating boot delays. |
Use Scenario: Regulating power for a wireless temperature/humidity sensor node operating in remote industrial environments. IC Role / Device Role / Timing Role: Primary power conditioner interfacing between energy-harvesting source and ultra-low-power MCU. Use Value: -40°C to +85°C rating and thermal shutdown ensure reliability in uncontrolled enclosures near motors or HVAC units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3302E/MB | Higher dropout (500mV @ 250mA), higher IQ (3.5μA), SOT-23-5 package | Limited to ≤250mA loads; less suitable for FPGA I/O or burst-mode DSP cores | Select when cost sensitivity outweighs current capability and thermal performance requirements. |
| Torex XC6219B332MR-G | Lower IQ (1.0μA), lower max current (300mA), same U-DFN2020-6 footprint | Insufficient for 600mA FPGA banks; better suited for always-on RTC or memory backup rails | Choose only for ultra-low-power subsystems where 300mA peak current is sufficient. |
Compared with MCP1703T-3302E/MB and XC6219B332MR-G, the AP7366EA-33SN-7 uniquely balances 600mA drive, 60μA IQ, and 300mV dropout in a 2mm² package-making it optimal for space-constrained, medium-power digital rail applications demanding both efficiency and responsiveness.
Availability
AP7366EA-33SN-7 is available at Aetrix Electronics and suitable for FPGA I/O power, DSP core supply, and industrial sensor node designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AP7366EA-33SN-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 family engineered for battery-powered and space-constrained systems requiring ultra-low quiescent current, fast transient response, and robust fault protection.
FAQ
What is the recommended input and output capacitor configuration for AP7366EA-33SN-7?
A 1μF X5R/X7R ceramic capacitor is required between IN and GND, and another 1μF ceramic capacitor between OUT and GND. Both must be placed as close as possible to their respective pins. Larger values improve transient response but are not required for stability. Input capacitor ESR should be ≤100mΩ; output capacitor ESR may range up to 100mΩ without compromising loop stability.
Can AP7366EA-33SN-7 operate without any load connected to the output?
Yes. The AP7366EA-33SN-7 remains stable and fully regulated with zero load current. No minimum load is required-this is confirmed in the datasheet's "No Load Stability" section and validated across -40°C to +85°C ambient temperatures. The 60μA quiescent current flows regardless of load, enabling true no-load standby operation.
How does the EN pin behave when left unconnected?
Pin 1 (EN) has an internal 3MΩ pull-down resistor to GND, so it defaults to logic low and disables the regulator when left floating. To enable the device, EN must be driven to ≥1.0V (VIH). For always-on operation, tie EN directly to IN. Do not leave EN open in production designs-unintended noise coupling could cause erratic enable/disable behavior.
Is AP7366EA-33SN-7 qualified for automotive applications?
No. The AP7366EA-33SN-7 is not AEC-Q100 qualified. Diodes Incorporated explicitly states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing-none of which apply to this standard industrial-grade part. For automotive use, contact Diodes' automotive sales team for qualified alternatives such as the AP7365Q series.
AP7366EA-33SN-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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 210mV @ 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-33SN-7 FAQ
1.How can I place an order for AP7366EA-33SN-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7366EA-33SN-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-33SN-7 reliable?
The price and inventory of AP7366EA-33SN-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-33SN-7 is usually 5 days.
3.What payment methods are accepted for AP7366EA-33SN-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7366EA-33SN-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7366EA-33SN-7?
AP7366EA-33SN-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7366EA-33SN-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-33SN-7?
For technical support, including AP7366EA-33SN-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7366EA-33SN-7 requirements.
6.How does Aetrix verify that AP7366EA-33SN-7 is sourced from the original manufacturer or authorized distributors?
All AP7366EA-33SN-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-33SN-7 meets industry standards.
7.What is the process for return or replacement of AP7366EA-33SN-7?
All AP7366EA-33SN-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7366EA-33SN-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-33SN-7 part is unused and in its original packaging.
Return procedure for AP7366EA-33SN-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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