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Diodes Incorporated AP7366-33W5-7
- Part No.:
- AP7366-33W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7366-33W5-7.pdf
- Description:
- IC REG LINEAR 3.3V 600MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:5,286
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Product details
Overview
AP7366-33W5-7 from Diodes Incorporated is a fixed-output 3.3V, 600mA low-dropout linear regulator in SOT25 package, featuring 60μA quiescent current, 300mV dropout at full load, 75dB PSRR at 1kHz, and integrated enable control, thermal shutdown, and current-limit protection-designed for power management in portable and battery-powered systems.
For engineers reviewing the AP7366-33W5-7 datasheet, AP7366-33W5-7 pinout, AP7366-33W5-7 application, or AP7366-33W5-7 equivalent, key selection criteria include output voltage accuracy (±1% for 3.3V), fast 150μs start-up time, stability with 1μF ceramic output capacitor, and operation across –40°C to +85°C ambient range.
Technical Context
The AP7366-33W5-7 implements a PMOS pass transistor architecture enabling low dropout (300mV @ 600mA) and high PSRR (75dB @ 1kHz). Its internal 0.8V bandgap reference and error amplifier regulate output precisely without external feedback components in fixed-voltage configuration.
Enable logic operates with VIH ≥ 1.0V and VIL ≤ 0.3V, supporting direct microcontroller GPIO control. Thermal shutdown activates at +150°C with +20°C hysteresis, and short-circuit protection limits output current to ~250mA when OUT is grounded.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% (ensures stable I/O rail for 3.3V logic and peripherals) |
| Max Output Current | 600mA continuous (supports FPGA I/O banks, MCU cores, and sensor interfaces) |
| Quiescent Current | 60μA typical (enables multi-year battery life in always-on IoT sensors) |
| Dropout Voltage | 300mV at 600mA (allows regulation from 3.6V input, e.g., single Li-ion cell) |
| PSRR | 75dB at 1kHz (rejects switching noise from adjacent DC/DC converters) |
| Start-Up Time | 150μs (enables rapid power sequencing in wake-from-sleep applications) |
| Operating Temp | –40°C to +85°C (validates use in industrial edge controllers and automotive infotainment) |
Pinout & Package
SOT25 (5-pin, 3.0mm × 2.8mm) package with exposed pad for thermal enhancement; pin-compatible with industry-standard SOT-23-5 footprint but includes dedicated EN and GND pins for robust enable control and low-noise grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2.2V–6V; requires ≥1μF MLCC bypass to GND for stability and noise rejection |
| 2 - GND | Power ground reference | Low-impedance return path; must be connected directly to PCB ground plane |
| 3 - EN | Enable control input | Active-high logic interface; ties to MCU GPIO for dynamic power gating |
| 4 - NC | No connection | Internally unconnected; must remain floating or grounded per layout guidelines |
| 5 - OUT | Regulated output | Delivers 3.3V ±1%; requires ≥1μF ceramic capacitor to GND for transient response |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 60μA quiescent current enables >10-year battery life in coin-cell–powered devices |
| Fast transient response | Load step recovery within 200μs (100mA ↔ 500mA) minimizes voltage droop in burst-mode loads |
| Stable with 1μF output cap | Eliminates need for large bulk capacitors-reduces BOM cost and board area |
| Integrated protection | Current limit (≥660mA), thermal shutdown (+150°C), and short-circuit clamp (~250mA) prevent field failures |
| High PSRR | 75dB at 1kHz suppresses ripple from upstream buck converters feeding mixed-signal circuits |
Applications
| Wireless Sensor Node | FPGA I/O Power |
|---|---|
|
Use Scenario: Battery-powered environmental sensor transmitting data via BLE or LoRa every 5 minutes. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying RF transceiver, microcontroller, and analog front-end. Use Value: 60μA IQ extends CR2032 battery life beyond 5 years; 150μs start-up ensures immediate transmission after wake-up. |
Use Scenario: Industrial FPGA-based motor controller requiring clean, sequenced I/O voltage rails. IC Role / Device Role / Timing Role: Dedicated 3.3V LDO for FPGA bank powering digital I/O buffers and configuration memory. Use Value: 75dB PSRR isolates I/O signals from noisy 12V-to-3.3V DC/DC switching noise; ±1% accuracy meets FPGA VCCIO tolerance. |
| Portable Medical Monitor | Automotive Infotainment Display |
|
Use Scenario: Handheld ECG device with OLED display and Bluetooth LE connectivity operating on two AAA cells. IC Role / Device Role / Timing Role: Main 3.3V regulator for display driver, ADC, and BLE SoC during active measurement cycles. Use Value: 300mV dropout allows full 3.3V output down to 3.6V input-maximizing usable battery voltage range from 3.0V to 4.2V per cell. |
Use Scenario: In-dash head unit with touch controller, audio codec, and USB interface powered from vehicle 5V rail. IC Role / Device Role / Timing Role: Secondary 3.3V LDO for USB PHY and touch controller ICs requiring low-noise, fast-response supply. Use Value: –40°C to +85°C rating supports under-hood temperature cycling; EN pin enables system-level power sequencing with MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 300mA max output, 2μA IQ, no EN pin, TO-92 package | Limited to ultra-low-power sensor nodes; lacks enable control and thermal protection | Select only for sub-100mA, always-on applications where size and cost outweigh performance needs |
| TLS850F3TAV50 | 500mA, AEC-Q100 qualified, integrated watchdog, 40μA IQ, PG pin | Designed for automotive body electronics; requires qualification documentation and PPAP support | Choose for automotive production programs needing functional safety compliance and diagnostic features |
Compared with MCP1700-3302E/TO, AP7366-33W5-7 delivers double the current, integrated EN control, and robust fault protection-making it suitable for higher-performance portable systems. Against TLS850F3TAV50, it trades automotive qualification for lower cost and broader commercial temperature range, ideal for industrial and consumer designs.
Availability
AP7366-33W5-7 is available at Aetrix Electronics and suitable for battery-powered medical devices, FPGA power delivery, wireless sensor networks, and automotive infotainment displays requiring stable component supply and long-term manufacturability.
Supply support for AP7366-33W5-7 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 solutions, with design centers across Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.
The AP7366 belongs to Diodes' high-efficiency LDO portfolio targeting portable, industrial, and automotive power management-designed to replace legacy regulators with improved dropout, PSRR, and integration of enable and protection functions.
FAQ
What is the minimum input voltage required for stable 3.3V output at 600mA?
The AP7366-33W5-7 requires VIN ≥ 3.6V to maintain regulated 3.3V output at 600mA, based on its 300mV dropout specification. At lower input voltages-e.g., 3.5V-the output will drop below 3.3V due to insufficient headroom, triggering unregulated behavior.
Can the AP7366-33W5-7 operate without an output capacitor?
No. The AP7366-33W5-7 requires a minimum 1μF ceramic output capacitor between OUT and GND for stability and transient response. Omitting it causes oscillation and potential damage; the datasheet explicitly states stability is guaranteed only with ≥1μF low-ESR ceramic capacitors.
Is the EN pin internally pulled up or down?
The EN pin has no internal pull-up or pull-down resistor. It must be actively driven to logic-high (≥1.0V) for operation or logic-low (≤0.3V) for shutdown. Leaving it floating risks undefined state; tie to IN via 100kΩ resistor if always-on operation is needed.
Does AP7366-33W5-7 support reverse polarity protection?
No. The AP7366-33W5-7 lacks reverse-input protection. Applying negative voltage to IN or reverse-biasing the output relative to input can cause latch-up or permanent damage. External protection diode or MOSFET circuitry is required in systems prone to reverse connection.
AP7366-33W5-7 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:
- Current Limit, Enable
- Protection Features:
- Over Current, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7366-33W5-7 FAQ
1.How can I place an order for AP7366-33W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7366-33W5-7 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 AP7366-33W5-7 reliable?
The price and inventory of AP7366-33W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7366-33W5-7 is usually 5 days.
3.What payment methods are accepted for AP7366-33W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7366-33W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7366-33W5-7?
AP7366-33W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7366-33W5-7 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 AP7366-33W5-7?
For technical support, including AP7366-33W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7366-33W5-7 requirements.
6.How does Aetrix verify that AP7366-33W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7366-33W5-7 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 AP7366-33W5-7 meets industry standards.
7.What is the process for return or replacement of AP7366-33W5-7?
All AP7366-33W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7366-33W5-7, 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 AP7366-33W5-7 part is unused and in its original packaging.
Return procedure for AP7366-33W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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