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Diodes Incorporated AP7366-18W5-7
- Part No.:
- AP7366-18W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7366-18W5-7.pdf
- Description:
- IC REG LINEAR 1.8V 600MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:20,916
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Product details
Overview
AP7366-18W5-7 from Diodes Incorporated is a fixed-output 1.8V, 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. It delivers stable core/I/O power for FPGA, DSP, and battery-powered portable electronics with fast 150μs startup and thermal shutdown protection.
For engineers reviewing the AP7366-18W5-7 datasheet, AP7366-18W5-7 pinout, AP7366-18W5-7 application, or AP7366-18W5-7 equivalent, key selection criteria include output voltage accuracy (±1.0% for 1.8V), load regulation (±1.0%), EN logic thresholds (VIH = 1.0V min), and compatibility with 1μF ceramic output capacitors.
Technical Context
The AP7366-18W5-7 implements a PMOS pass transistor architecture with internal 0.8V bandgap reference and error amplifier, enabling stable regulation across 2.2V–6V input range. Its current-limit circuit triggers at 660mA typical and short-circuit protection clamps output to ~250mA when VOUT drops below 15% of nominal.
Thermal shutdown activates at +150°C junction temperature with +20°C hysteresis, and the device remains stable without minimum load. The EN pin provides active-high logic control with 3MΩ internal pulldown resistor and ±0.1μA leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1.0% at 10mA load; ensures precise core rail for 1.8V I/O interfaces |
| Max Output Current | 600mA continuous; supports mid-power digital loads like FPGA I/O banks |
| Quiescent Current | 60μA typical; enables >1-year battery life in always-on sensor nodes |
| Dropout Voltage | 300mV at 600mA; allows operation down to 2.1V input for single-cell Li-ion systems |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC/DC converters |
| Start-Up Time | 150μs to 3V; meets real-time wake-up requirements in portable devices |
| Operating Temp | −40°C to +85°C ambient; qualified for industrial and extended commercial environments |
Pinout & Package
SOT25 package (3.0mm × 2.8mm × 1.3mm) with exposed thermal pad not connected internally; requires minimum 1oz copper pour for thermal management per Diodes' recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Bypassed to GND with ≥1μF MLCC; must be routed with wide trace to minimize impedance |
| 2 - GND | Power ground reference | Common return path for IN, OUT, and EN; connects to PCB ground plane for stability |
| 3 - EN | Enable control input | Active-high logic: drives ON above 1.0V; internal 3MΩ pulldown holds OFF when floating |
| 4 - NC | No connection | Unbonded die pad; must remain unconnected and un-routed on PCB |
| 5 - OUT | Regulated output | Delivers 1.8V; bypassed with ≥1μF ceramic capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR capacitor support | Stable with 1μF ceramic output capacitor (10–300mΩ ESR); reduces BOM count and board space |
| Fast transient response | Load step recovery <200μs with <30mV undershoot; maintains digital logic integrity during burst-mode operation |
| Integrated protection | Current limit (660mA typ), short-circuit clamp (~250mA), and thermal shutdown (+150°C) prevent field failures |
| No minimum load requirement | Regulates stably at 0mA output; eliminates need for dummy load resistors in sleep modes |
| Ultra-low IQ | 60μA across full 2.2–6V input range; extends runtime in coin-cell and energy-harvesting applications |
Applications
| FPGA I/O Power | DSP Core Supply |
|---|---|
Use Scenario: Powering 1.8V I/O banks of Xilinx Artix-7 or Intel Cyclone V FPGAs in compact edge gateways. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 1.8V rail with fast load transient response to handle I/O switching currents. Use Value: PSRR >75dB at 1kHz rejects noise from nearby 1MHz DC/DC converters, preventing signal integrity degradation. | Use Scenario: Supplying 1.8V core voltage to TI C6748 DSPs in industrial motor control modules. IC Role / Device Role / Timing Role: Fixed-output LDO providing regulated core rail with EN-controlled power sequencing during boot and sleep transitions. Use Value: 150μs start-up time enables deterministic wake-up from deep-sleep states within 200μs system latency budget. |
| Portable Medical Sensors | Smart Home Hub SoC I/O |
Use Scenario: Powering ultra-low-power ECG front-end ASICs in wearable patch monitors powered by CR2032 batteries. IC Role / Device Role / Timing Role: Primary voltage regulator maintaining 1.8V rail across 2.2–3.0V battery discharge curve with minimal quiescent draw. Use Value: 60μA IQ extends usable battery life beyond 18 months in continuous monitoring mode. | Use Scenario: Delivering 1.8V I/O supply to NXP i.MX 8M Mini SoCs in voice-controlled smart speakers. IC Role / Device Role / Timing Role: Secondary LDO decoupling high-speed MIPI DSI and SDIO interfaces from noisy main PMIC rails. Use Value: 300mV dropout enables operation down to 2.1V input, preserving functionality during brown-out events on shared 3.3V bus. |
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 |
|---|---|---|---|
| MCP1700-1802E/TO | 250mA max output, 1.8V fixed, 1.6μA IQ, SOT23-3 package | Limited to sub-300mA loads; lacks EN pin and thermal shutdown | Select only for ultra-low-IQ micro-power sensor nodes where 250mA suffices and enable control is unnecessary |
| TLS850F0TES/V1 | 500mA, 1.8V fixed, 35μA IQ, AEC-Q100 Grade 2 automotive qualification | Automotive-qualified with wider temp range (−40°C to +125°C) and stricter ESD (4kV HBM) | Choose for automotive infotainment I/O rails requiring PPAP documentation and IATF 16949 traceability |
Compared with MCP1700-1802E/TO and TLS850F0TES/V1, the AP7366-18W5-7 uniquely balances 600mA capability, 60μA IQ, EN control, and full protection suite in a cost-effective SOT25 package-making it optimal for industrial and portable consumer designs where performance and reliability intersect.
Availability
AP7366-18W5-7 is available at Aetrix Electronics and suitable for FPGA I/O power, portable medical sensors, and smart home hub SoC I/O requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP7366-18W5-7 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 design centers in Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.
The AP7366 belongs to Diodes' high-performance LDO family targeting portable, industrial, and computing applications where low IQ, fast transient response, and robust protection are critical for system-level reliability.
FAQ
What is the maximum input voltage for AP7366-18W5-7?
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 thermal limits under load, especially in SOT25 without enhanced heatsinking. For 6V input at 600mA, power dissipation reaches ~1.8W-requiring careful thermal design per the 169°C/W θJA rating.
Does AP7366-18W5-7 require an external feedback resistor network?
No. As a fixed-output variant, AP7366-18W5-7 has internal resistor divider set for 1.8V and does not use the ADJ pin. Pin 4 is NC (no connection), and the ADJ terminal is unconnected internally-eliminating calibration drift and reducing layout complexity versus adjustable versions.
Can AP7366-18W5-7 operate without an output capacitor?
No. A minimum 1μF ceramic output capacitor is mandatory for stability and transient response. Omitting it causes oscillation and output voltage collapse under load. Diodes specifies 10–300mΩ ESR range; using tantalum or aluminum electrolytic capacitors outside this range may induce instability or excessive overshoot.
Is AP7366-18W5-7 qualified for automotive applications?
No. AP7366-18W5-7 is rated for −40°C to +85°C ambient and is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP7366Q series) with PPAP support, IATF 16949 manufacturing, and extended temperature testing-but this specific part number is intended for industrial and commercial use only.
AP7366-18W5-7 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.42V @ 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
AP7366-18W5-7 FAQ
1.How can I place an order for AP7366-18W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7366-18W5-7 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 AP7366-18W5-7 reliable?
The price and inventory of AP7366-18W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7366-18W5-7 is usually 5 days.
3.What payment methods are accepted for AP7366-18W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7366-18W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7366-18W5-7?
AP7366-18W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7366-18W5-7 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 AP7366-18W5-7?
For technical support, including AP7366-18W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7366-18W5-7 requirements.
6.How does Aetrix verify that AP7366-18W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7366-18W5-7 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 AP7366-18W5-7 meets industry standards.
7.What is the process for return or replacement of AP7366-18W5-7?
All AP7366-18W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7366-18W5-7, 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 AP7366-18W5-7 part is unused and in its original packaging.
Return procedure for AP7366-18W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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