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Diodes Incorporated AP7366EA-18SN-7
- Part No.:
- AP7366EA-18SN-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7366EA-18SN-7.pdf
- Description:
- IC REG LINEAR 1.8V 600MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,982
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Product details
Overview
AP7366EA-18SN-7 from Diodes Incorporated is a fixed-output 1.8V, 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 DSP core supplies in space-constrained portable electronics.
For engineers reviewing the AP7366EA-18SN-7 datasheet, AP7366EA-18SN-7 pinout, AP7366EA-18SN-7 application, or AP7366EA-18SN-7 equivalent, key selection criteria include its 1.8V fixed output accuracy (±1%), thermal shutdown threshold (+150°C), PSRR of 75dB at 1kHz, and compatibility with U-DFN2020-6 footprint for high-density PCB layouts.
Technical Context
The AP7366EA-18SN-7 integrates a PMOS pass transistor, precision 0.8V bandgap reference, error amplifier, and thermal shutdown circuitry. Its EN pin enables direct logic-level control with VIH ≥ 1.0V and VIL ≤ 0.3V, supporting seamless integration into power sequencing architectures.
Designed for battery-powered systems, it delivers fast transient response (150μs startup) and maintains regulation across -40°C to +85°C ambient while consuming only 60μA IQ - enabling >10-year shelf life in always-on IoT sensor nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1% over load/temperature - ensures reliable logic-level compliance for 1.8V I/O standards. |
| Max Output Current | 600mA continuous - sufficient for powering dual-core Cortex-M7 peripherals without derating. |
| Dropout Voltage | 300mV at 600mA - enables operation from 2.1V input (e.g., single LiFePO₄ cell under discharge). |
| Quiescent Current | 60μA typical - extends battery runtime in sleep mode by minimizing standby power loss. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC-DC converters feeding mixed-signal SoCs. |
| Thermal Shutdown | +150°C activation with +20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Input Voltage Range | 2.2V to 6.0V - supports direct connection to USB VBUS, single-cell Li-ion, or buck converter outputs. |
Pinout & Package
AP7366EA-18SN-7 uses the U-DFN2020-6 package (2.0mm × 2.0mm × 0.6mm), featuring an exposed thermal pad for enhanced heat dissipation (θJA = 46.2°C/W). The 6-pin layout supports compact routing and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable Input | Active-high logic control: drives regulator ON when ≥1.0V; ties to VIN for always-on operation. |
| 2 (GND) | Ground Reference | Primary return path for load current and internal bias - must connect directly to low-impedance ground plane. |
| 3 (IN) | Input Supply | Accepts 2.2–6.0V input; requires ≥1μF MLCC decoupling placed within 2mm of pin for stability. |
| 4 (OUT) | Regulated Output | Delivers stable 1.8V; bypassed with ≥1μF ceramic capacitor to minimize load transient undershoot. |
| 5 (NC) | No Connection | Unbonded terminal - left floating or grounded per layout convenience; no electrical function. |
| 6 (ADJ) | Feedback Reference | Internally tied to 0.8V reference; unused in fixed-output variants but retained for pin compatibility. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 60μA enables >5-year battery life in wireless sensor nodes operating at 1% duty cycle. |
| Fast start-up time | 150μs rise from enable to regulated 1.8V - meets real-time wake-up requirements for BLE peripherals. |
| Stable with 1μF ceramic output cap | Eliminates need for large tantalum or electrolytic capacitors, reducing board area and cost. |
| Integrated protection | Current limit (≈1A), short-circuit clamp (250mA), and thermal shutdown prevent field failures. |
| High PSRR at audio frequencies | 75dB rejection at 1kHz allows clean power delivery to ADCs and audio codecs near noisy SMPS. |
Applications
| Portable Medical Sensors | FPGA I/O Power Rails |
|---|---|
Use Scenario: Wearable ECG patch with Bluetooth LE transmission and ultra-low-power analog front-end. IC Role / Device Role / Timing Role: Primary 1.8V supply for ADC driver and digital logic, enabled synchronously with MCU wake-up signal. Use Value: 60μA IQ minimizes standby drain; 300mV dropout permits operation down to 2.1V battery voltage, extending usable cell life by 18%. |
Use Scenario: High-speed industrial vision system using Xilinx Artix-7 FPGA with 1.8V I/O banks. IC Role / Device Role / Timing Role: Local point-of-load regulator for FPGA I/O voltage, sequenced after core rail via EN pin. Use Value: 75dB PSRR suppresses ripple from adjacent 12V-to-1.8V buck converter, reducing bit-error rate in LVDS interfaces. |
| Smart Home Edge Nodes | Automotive Body Control Modules |
Use Scenario: Zigbee-enabled smart thermostat with ambient light sensing and display backlight control. IC Role / Device Role / Timing Role: Dedicated 1.8V rail for microcontroller I/O and sensor interface, powered from 3.3V LDO upstream. Use Value: 150μs startup enables rapid sensor polling cycles; thermal shutdown protects against enclosure overheating in sealed enclosures. |
Use Scenario: Door module with LIN transceiver, LED drivers, and position sensors in 12V automotive architecture. IC Role / Device Role / Timing Role: Secondary 1.8V supply for CAN controller logic and EEPROM interface, derived from 5V intermediate rail. Use Value: -40°C to +85°C rating ensures reliability in under-hood temperature cycling; 2.2V min input supports cold-crank scenarios down to 6.5V battery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent-current LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-1802E/MB | Higher IQ (1.6μA vs 60μA), lower max current (250mA), SOT-23-5 package | Better for micropower <100mA loads; unsuitable for 600mA FPGA I/O rails | Select if standby current dominates design priority and load current ≤250mA. |
| Torex XC6219B182MR-G | Same 1.8V output, 600mA rating, but higher dropout (450mV @600mA) and no EN pin | Lacks enable control - requires external MOSFET for sequencing; less suitable for dynamic power management | Choose only if EN functionality is unnecessary and board space permits larger dropout margin. |
Compared with MCP1703T-1802E/MB and XC6219B182MR-G, AP7366EA-18SN-7 uniquely balances 600mA capability, 60μA IQ, EN control, and 300mV dropout - making it optimal for space-constrained, battery-sensitive applications requiring both high current and ultra-low standby draw.
Availability
AP7366EA-18SN-7 is available at Aetrix Electronics and suitable for portable medical sensors, FPGA I/O power rails, and smart home edge nodes requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for AP7366EA-18SN-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, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q200 for automotive-grade components.
The AP7366EA belongs to Diodes' high-efficiency LDO portfolio targeting battery-powered and thermally constrained applications - designed specifically to replace legacy regulators in portable computing, industrial IoT, and automotive body electronics where low IQ and fast transient response are critical.
FAQ
What is the minimum input voltage required for AP7366EA-18SN-7 to maintain 1.8V regulation at 600mA?
The device requires VIN ≥ 2.1V to sustain regulation at full load, based on its 300mV dropout specification (1.8V + 0.3V = 2.1V). Below this, output voltage collapses linearly with input; the absolute minimum rated input is 2.2V per datasheet limits, ensuring margin for line regulation and tolerance.
Can AP7366EA-18SN-7 operate without an external output capacitor?
No - a minimum 1μF ceramic capacitor is mandatory between OUT and GND for stability, as confirmed by the datasheet's "Stable with Low ESR, 1µF Ceramic Output Capacitor" feature and application circuits. Omitting it causes oscillation and potential damage due to phase margin loss in the control loop.
Is the ADJ pin functional in the AP7366EA-18SN-7 fixed-output variant?
No - the ADJ pin is internally connected to the 0.8V reference but not externally accessible for adjustment in fixed-output versions like AP7366EA-18SN-7. It remains electrically present for pin compatibility but serves no user-configurable function; leaving it unconnected has no impact on operation.
How does thermal shutdown behave during sustained overload conditions?
When junction temperature reaches +150°C, the regulator disables output and enters thermal shutdown; recovery occurs automatically at +130°C (20°C hysteresis). Under continuous overload, this causes on-off cycling - limiting average power dissipation and preventing permanent silicon damage, as verified in thermal characterization graphs on page 11 of DS43719.
AP7366EA-18SN-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):
- 1.8V
- 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:
- U-DFN2020-6
AP7366EA-18SN-7 FAQ
1.How can I place an order for AP7366EA-18SN-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7366EA-18SN-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-18SN-7 reliable?
The price and inventory of AP7366EA-18SN-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-18SN-7 is usually 5 days.
3.What payment methods are accepted for AP7366EA-18SN-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7366EA-18SN-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7366EA-18SN-7?
AP7366EA-18SN-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7366EA-18SN-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-18SN-7?
For technical support, including AP7366EA-18SN-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7366EA-18SN-7 requirements.
6.How does Aetrix verify that AP7366EA-18SN-7 is sourced from the original manufacturer or authorized distributors?
All AP7366EA-18SN-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-18SN-7 meets industry standards.
7.What is the process for return or replacement of AP7366EA-18SN-7?
All AP7366EA-18SN-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7366EA-18SN-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-18SN-7 part is unused and in its original packaging.
Return procedure for AP7366EA-18SN-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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