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Diodes Incorporated AP7365-33EG-13
- Part No.:
- AP7365-33EG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AP7365-33EG-13.pdf
- Description:
- IC REG LIN 3.3V 600MA SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,384
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Product details
Overview
AP7365-33EG-13 from Diodes Incorporated is a fixed-output 3.3V, 600mA low-dropout linear regulator with 35μA quiescent current, 300mV dropout at full load, and integrated enable control. It delivers stable power to FPGA I/O rails and DSP core supplies in battery-powered notebooks and servers, featuring fast 200μs startup and 65dB PSRR at 1kHz.
For engineers reviewing the AP7365-33EG-13 datasheet, AP7365-33EG-13 pinout, AP7365-33EG-13 application, or AP7365-33EG-13 equivalent, key selection criteria include dropout voltage under 600mA load, thermal shutdown threshold at +145°C, EN logic-high activation level (≥1.4V), and compatibility with 1μF ceramic output capacitors.
Technical Context
The AP7365-33EG-13 implements a PMOS pass transistor architecture enabling ultra-low quiescent current and fast transient response. Its internal 0.8V bandgap reference feeds an error amplifier that regulates output by modulating gate drive to maintain ±2% accuracy across –40°C to +85°C ambient.
Thermal shutdown activates at +145°C junction temperature with +15°C hysteresis, while current limit clamps output to ~1.4A during overload and short-circuit protection limits fault current to ~240mA. The device operates across 2V–6V input and requires no minimum load for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% over –40°C to +85°C, suitable for standard I/O rail compliance. |
| Max Output Current | 600mA continuous, enabling direct powering of mid-power FPGA banks or microcontroller peripherals. |
| Dropout Voltage | 300mV at 600mA (VOUT ≥ 2.5V), allowing operation from 3.6V Li-ion cells down to end-of-discharge. |
| Quiescent Current | 35μA typical, minimizing standby power loss in always-on sensor nodes or real-time clock domains. |
| PSRR | 65dB at 1kHz, suppressing switching noise from upstream DC/DC converters feeding the LDO input. |
| Start-Up Time | 200μs typical, supporting rapid wake-from-sleep sequences in portable devices without brownout risk. |
| Enable Threshold | VIH = 1.4V min, compatible with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Shutdown | Triggers at +145°C junction temperature with +130°C restart hysteresis, preventing permanent damage during sustained overload. |
Pinout & Package
AP7365-33EG-13 is packaged in SOT223 (E package) with exposed thermal pad on pin 3 (IN). Pin 1 is OUT, pin 2 is GND, and pin 3 is IN - the tab is electrically connected to IN for enhanced thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Regulated output voltage node | Must be bypassed with ≥1μF ceramic capacitor placed adjacent to pin; connects directly to load I/O rail. |
| GND (Pin 2) | Reference ground return path | Low-impedance connection required to minimize noise coupling; shares thermal pad plane with IN. |
| IN (Pin 3 / Tab) | Unregulated input supply input | Tab is electrically tied to IN; must be soldered to large copper pour for θJA = 142°C/W thermal performance. |
| EN (Not present) | Enable control input | Not implemented in E-package fixed-output variant; regulator is always active when powered. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with 1μF ceramic output capacitor | Eliminates need for bulky tantalum or electrolytic caps; reduces PCB area and cost in space-constrained designs. |
| Fast load transient response (0–600mA) | Maintains <±20mV output deviation during sudden DSP core wake-up events, avoiding logic errors or resets. |
| Low 35μA quiescent current | Extends battery runtime in always-on IoT edge nodes - e.g., adds ~1.2 years to 10mAh coin-cell life at 10μA average system load. |
| Integrated thermal shutdown (+145°C) | Prevents catastrophic failure during board-level thermal runaway; auto-recovery enables graceful degradation instead of hard fault. |
| ±2% output accuracy over temperature | Ensures reliable operation of 3.3V-tolerant interfaces (e.g., SPI, UART) without external trimming or calibration. |
Applications
| Portable Notebook I/O Power | FPGA Core Voltage Supply |
|---|---|
Use Scenario: Powering USB controller, display interface, and audio codec I/O banks in ultrabooks with dual-cell Li-ion input. IC Role / Device Role / Timing Role: Primary 3.3V LDO delivering clean, low-noise power to mixed-signal peripherals with tight voltage tolerance. Use Value: 65dB PSRR suppresses ripple from 1MHz buck converter feeding the AP7365 input, ensuring <10mVpp noise on I/O rails. |
Use Scenario: Providing stable 3.3V to FPGA configuration I/O banks during partial reconfiguration cycles. IC Role / Device Role / Timing Role: Dedicated low-dropout regulator isolating FPGA I/O from shared system rails subject to dynamic load transients. Use Value: 200μs startup enables immediate I/O availability after configuration bitstream load, eliminating boot delays. |
| Industrial Sensor Node MCU Supply | Automotive Infotainment Display Interface |
Use Scenario: Powering ARM Cortex-M4 microcontroller and BLE radio in battery-operated environmental monitoring nodes. IC Role / Device Role / Timing Role: Always-on LDO maintaining regulated 3.3V during 10-year deployment with minimal self-discharge impact. Use Value: 35μA IQ extends 2000mAh Li-SOCl₂ cell life to >15 years in sleep-dominated duty cycle (0.1% active time). |
Use Scenario: Supplying 3.3V to LVDS serializer/deserializer ICs driving TFT displays in automotive head units. IC Role / Device Role / Timing Role: Secondary LDO filtering switching noise from main domain power supply before entering noise-sensitive video signal chain. Use Value: 300mV dropout allows operation from 3.6V backup rail during cold-crank events, sustaining display functionality below 6V battery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-33YG-13 | Lower 300mA output current; same 3.3V fixed output, 35μA IQ, and SOT89 package. | Suitable only for light-load peripherals (e.g., sensors, RTCs); insufficient for FPGA I/O or MCU + radio loads. | Select when total load ≤300mA and SOT89 footprint is preferred for thermal or layout constraints. |
| AP2202K-33TRG1 | Higher 500mA rating but 65μA IQ; no thermal shutdown; SOT23-5 package with EN pin. | Lacks fault protection for industrial environments; EN pin adds control flexibility but increases BOM count. | Choose where enable control is mandatory and thermal robustness is secondary to size/cost. |
Compared with AP7361-33YG-13 and AP2202K-33TRG1, the AP7365-33EG-13 uniquely balances 600mA delivery, 35μA IQ, full fault protection, and SOT223 thermal performance - making it optimal for mid-power embedded systems requiring reliability and efficiency.
Availability
AP7365-33EG-13 is available at Aetrix Electronics and suitable for portable computing, industrial sensor nodes, and automotive infotainment display interfaces requiring stable component supply across extended product lifecycles.
Supply support for AP7365-33EG-13 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 for power management, signal integrity, and connectivity applications.
The AP7365 series belongs to Diodes' high-performance LDO portfolio designed specifically for battery-powered and thermally constrained systems demanding ultra-low IQ, fast transient response, and robust fault protection.
FAQ
What is the thermal resistance (θJA) of AP7365-33EG-13 in its SOT223 package?
The AP7365-33EG-13 has a junction-to-ambient thermal resistance of 142°C/W when mounted on a standard FR-4 PCB with 1oz copper and minimum recommended pad layout. This value assumes the exposed thermal pad (pin 3/tab) is fully soldered to an internal copper plane for heat dissipation.
Does AP7365-33EG-13 require an external enable signal to operate?
No. The AP7365-33EG-13 is a fixed-output variant in the SOT223-E package and does not include an EN pin. It operates continuously whenever valid input voltage (2V–6V) is applied to the IN pin; enable functionality is absent in this specific ordering option.
Can AP7365-33EG-13 be used with a 1μF output capacitor only?
Yes. The device is explicitly characterized and guaranteed stable with a single 1μF ceramic output capacitor having ESR >15mΩ. Larger capacitance improves transient response but is not required for basic regulation or stability per the datasheet.
What is the maximum input voltage the AP7365-33EG-13 can tolerate?
The absolute maximum input voltage is 6.5V. For reliable continuous operation, the recommended maximum is 6.0V per the "Recommended Operating Conditions" table. Exceeding 6.0V risks accelerated parametric drift or latent damage, especially at elevated temperatures.
AP7365-33EG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- 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):
- 0.4V @ 600mA
- Current - Output:
- 600mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (1kHz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
AP7365-33EG-13 FAQ
1.How can I place an order for AP7365-33EG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7365-33EG-13 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 AP7365-33EG-13 reliable?
The price and inventory of AP7365-33EG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7365-33EG-13 is usually 5 days.
3.What payment methods are accepted for AP7365-33EG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7365-33EG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7365-33EG-13?
AP7365-33EG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7365-33EG-13 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 AP7365-33EG-13?
For technical support, including AP7365-33EG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7365-33EG-13 requirements.
6.How does Aetrix verify that AP7365-33EG-13 is sourced from the original manufacturer or authorized distributors?
All AP7365-33EG-13 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 AP7365-33EG-13 meets industry standards.
7.What is the process for return or replacement of AP7365-33EG-13?
All AP7365-33EG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7365-33EG-13, 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 AP7365-33EG-13 part is unused and in its original packaging.
Return procedure for AP7365-33EG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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