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Diodes Incorporated AP7366EA-33W5-7
- Part No.:
- AP7366EA-33W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7366EA-33W5-7.pdf
- Description:
- IC CHIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,321
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Product details
Overview
AP7366EA-33W5-7 from Diodes Incorporated is a fixed-output 3.3V, 600mA low-dropout linear regulator with enable control, 60μA quiescent current, 300mV dropout at full load, and stable operation with 1μF ceramic output capacitance. It serves as a primary power rail for FPGA I/O banks and microcontroller core supplies in space-constrained portable electronics.
For engineers reviewing the AP7366EA-33W5-7 datasheet, AP7366EA-33W5-7 pinout, AP7366EA-33W5-7 application, or AP7366EA-33W5-7 equivalent, key selection criteria include dropout voltage at 600mA, EN pin logic thresholds, thermal resistance in SOT25 (139°C/W), PSRR at 1kHz (75dB), and compatibility with 1μF low-ESR ceramic capacitors.
Technical Context
The AP7366EA-33W5-7 integrates a PMOS pass element, precision 0.8V bandgap reference, and error amplifier to regulate fixed 3.3V output across 2.2–6V input. Its fast 150μs startup time and excellent load transient response stem from internal compensation optimized for 1μF output capacitance.
Protection circuitry includes foldback current limiting (typ. 1.0A), thermal shutdown at +150°C with +20°C hysteresis, and short-circuit current clamping at 250mA. The EN pin requires VIH ≥ 1.0V and VIL ≤ 0.3V for reliable logic-level control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% accuracy ensures stable I/O rail for 3.3V logic interfaces without external feedback resistors. |
| Max Output Current | 600mA continuous delivery supports FPGA I/O banks or dual-core MCU subsystems without thermal derating at TA = 85°C in SOT25. |
| Dropout Voltage | 300mV at 600mA enables regulation from 3.6V input - critical for single-cell Li-ion (3.0–4.2V) or 3.3V backup systems. |
| Quiescent Current | 60μA typical enables >1-year battery life in always-on IoT sensors powered by CR2032 cells. |
| PSRR | 75dB at 1kHz suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Start-up Time | 150μs allows rapid power sequencing in multi-rail systems where 3.3V must follow 1.2V core rail within tight timing windows. |
| Thermal Resistance | 139°C/W (SOT25) defines minimum PCB copper area required: ≥250mm² 2oz thermal pad to sustain 600mA at TA = 85°C. |
Pinout & Package
SOT25 package (3.0 × 2.8 × 1.3 mm) with exposed thermal pad on bottom; pin 1 = IN, pin 2 = GND, pin 3 = EN, pin 4 = NC, pin 5 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Bypassed to GND with ≥1μF MLCC; trace width ≥0.5mm to minimize IR drop during 600mA transients. |
| 2 (GND) | Power ground reference | Must connect directly to thermal pad and system ground plane; shared return path with OUT capacitor minimizes noise coupling. |
| 3 (EN) | Enable control input | Active-high logic interface; internal 3MΩ pull-down ensures default OFF state if left unconnected. |
| 4 (NC) | No internal connection | Floating or grounded - no electrical impact; PCB pad may be omitted to reduce solder void risk under thermal pad. |
| 5 (OUT) | Regulated 3.3V output | Requires 1μF ceramic capacitor placed <2mm from pin; output discharge resistor (100Ω) enables fast rail collapse during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ operation | 60μA quiescent current enables >10-year shelf life in battery-backed real-time clocks without significant capacity loss. |
| Single-capacitor stability | Stable with 1μF ceramic output capacitor eliminates need for costly tantalum or polymer alternatives in cost-sensitive designs. |
| Fast transient response | Load step recovery <200μs (50mA→500mA) prevents brownout in FPGA configuration circuits during I/O switching events. |
| Integrated protection | Current limit + thermal shutdown + short-circuit clamp prevent field failures in unattended industrial controllers exposed to ESD or wiring faults. |
| Wide input range | 2.2–6V operation supports direct connection to USB VBUS (4.75–5.25V), Li-ion (3.0–4.2V), or 3.3V backplane rails with margin. |
Applications
| Industrial PLC I/O Modules | FPGA Configuration Power |
|---|---|
Use Scenario: Powering isolated digital I/O channels in DIN-rail mounted programmable logic controllers operating at -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Primary 3.3V rail for optocoupler drivers and level translators; regulated before isolation barrier. Use Value: 300mV dropout enables use of 3.6V auxiliary supply; 60μA IQ reduces self-heating in sealed enclosures. | Use Scenario: Supplying configuration voltage to Xilinx Artix-7 FPGA bank VCCO pins during bitstream loading and runtime operation. IC Role / Device Role / Timing Role: Dedicated low-noise 3.3V source decoupled from main system rail to prevent configuration corruption during high-speed I/O toggling. Use Value: 75dB PSRR at 1kHz attenuates DC/DC ripple; 150μs startup meets FPGA power-on reset timing requirements. |
| Portable Medical Sensors | Automotive Body Control Modules |
Use Scenario: Powering ultra-low-power ECG front-end ASICs and BLE transceivers in wearable patch monitors with coin-cell batteries. IC Role / Device Role / Timing Role: Always-on 3.3V supply enabling wake-on-event functionality while maintaining sub-100μA system sleep current. Use Value: 60μA IQ extends CR2032 battery life beyond 18 months; 1μF capacitor compatibility reduces BOM count and board area. | Use Scenario: Providing 3.3V power to LIN transceiver and microcontroller peripherals in door module ECUs subjected to automotive temperature cycling. IC Role / Device Role / Timing Role: Secondary regulated rail derived from 5V body bus; must survive load dump transients and cold crank conditions. Use Value: Thermal shutdown at +150°C prevents latch-up during under-hood thermal soak; -40°C to +85°C rating meets AEC-Q100 Grade 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/MB | 250mA max output, 1.8μA IQ, SOT23-5 package | Limited to low-current sensor nodes; insufficient for FPGA I/O or PLC drivers | Select only when <200mA load and ultra-low IQ dominate design priorities over output capability. |
| TI TPS7A0533PDBVR | 200mA max, 25μA IQ, 175mV dropout at 200mA, SOT23-5 | Lower dropout but half the current rating; not suitable for 600mA FPGA rails | Prefer for battery-powered microcontrollers with light loads where minimal voltage headroom is critical. |
Compared with MCP1700T-3302E/MB and TPS7A0533PDBVR, the AP7366EA-33W5-7 uniquely delivers 600mA output at 60μA IQ in SOT25 - bridging the gap between micro-power and medium-current LDOs without requiring larger packages or higher quiescent current.
Availability
AP7366EA-33W5-7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA configuration power supplies, and portable medical sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7366EA-33W5-7 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 ICs for power management, signal integrity, and connectivity applications.
The AP7366EA belongs to Diodes' low-quiescent-current LDO portfolio, engineered specifically for battery-powered and thermally constrained systems where efficiency, small footprint, and robust protection are mandatory.
FAQ
What is the minimum input voltage required for AP7366EA-33W5-7 to maintain regulation at 600mA?
The device requires VIN ≥ 3.6V to sustain 3.3V output at 600mA due to its 300mV dropout specification. Below 3.6V input, output voltage drops linearly - e.g., at VIN = 3.5V, VOUT ≈ 3.2V. Input must remain ≥2.2V for basic functionality, but regulation fails below the dropout threshold.
Can AP7366EA-33W5-7 operate without an output capacitor?
No - the device requires a minimum 1μF ceramic capacitor at the OUT pin for stability and transient response. Omitting it causes oscillation and potential damage. The datasheet explicitly states "stable with low ESR, 1μF ceramic output capacitor" and provides no no-capacitor operating mode.
Is the NC pin (pin 4) in SOT25 electrically isolated or should it be grounded?
Pin 4 is a true no-connect terminal with no internal bond wire or silicon connection. It may be left floating or tied to GND - neither affects regulation, thermal performance, or reliability. Diodes confirms "leaving this pin floating does not affect the chip functionality" in the Pin Descriptions table.
Does AP7366EA-33W5-7 meet AEC-Q100 for automotive use?
No - the datasheet states automotive qualification requires explicit contact with Diodes' sales team for AEC-Q100/101/104/200 parts. AP7366EA-33W5-7 is rated for -40°C to +85°C industrial operation but lacks PPAP documentation, IATF 16949 manufacturing certification, or stress-test validation required for automotive grade.
AP7366EA-33W5-7 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.32V @ 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-33W5-7 FAQ
1.How can I place an order for AP7366EA-33W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7366EA-33W5-7 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-33W5-7 reliable?
The price and inventory of AP7366EA-33W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7366EA-33W5-7 is usually 5 days.
3.What payment methods are accepted for AP7366EA-33W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7366EA-33W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7366EA-33W5-7?
AP7366EA-33W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7366EA-33W5-7 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-33W5-7?
For technical support, including AP7366EA-33W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7366EA-33W5-7 requirements.
6.How does Aetrix verify that AP7366EA-33W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7366EA-33W5-7 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-33W5-7 meets industry standards.
7.What is the process for return or replacement of AP7366EA-33W5-7?
All AP7366EA-33W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7366EA-33W5-7, 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-33W5-7 part is unused and in its original packaging.
Return procedure for AP7366EA-33W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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