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Diodes Incorporated AP7365-33ERG-13
- Part No.:
- AP7365-33ERG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AP7365-33ERG-13.pdf
- Description:
- IC REG LINEAR 3.3V 600MA SOT223R
- Quantity:
- Payment:
- Shipping:
Inventory:1,228
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Product details
Overview
AP7365-33ERG-13 from Diodes Incorporated is a fixed-output 3.3V, 600mA low-dropout linear regulator in SOT223-ER package with 35μA quiescent current, 300mV dropout at full load, and integrated enable control, thermal shutdown, and current limiting-designed for FPGA I/O power and battery-powered portable electronics.
For engineers reviewing the AP7365-33ERG-13 datasheet, AP7365-33ERG-13 pinout, AP7365-33ERG-13 application, or AP7365-33ERG-13 equivalent, key selection criteria include dropout voltage at 600mA, PSRR at 1kHz, start-up time, thermal resistance (θJA = 142°C/W), and compatibility with 1μF ceramic output capacitors.
Technical Context
The AP7365-33ERG-13 implements a PMOS pass transistor architecture enabling ultra-low quiescent current (35μA typ.) while maintaining fast transient response and stability with minimal 1μF ceramic output capacitance. Its internal 0.8V bandgap reference and error amplifier regulate output precisely across -40°C to +85°C ambient.
Enable logic operates with VIH ≥ 1.4V and VIL ≤ 0.4V, supporting direct microcontroller GPIO control. Protection circuitry includes foldback current limiting (1.4A typ.), short-circuit clamping (240mA), and thermal shutdown at +145°C with +15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% over -40°C to +85°C and full load range-ensures reliable core/I/O rail compliance for 3.3V logic systems. |
| Max Output Current | 600mA continuous-supports FPGA I/O banks, microcontroller peripherals, and sensor interfaces without external current boosting. |
| Dropout Voltage | 300mV at 600mA (VOUT ≥ 2.5V)-enables operation down to 3.6V input, critical for single-cell Li-ion or 4.0V USB-powered systems. |
| Quiescent Current | 35μA typical-minimizes standby power loss in always-on subsystems like real-time clocks or wake-on-event circuits. |
| PSRR | 65dB at 1kHz-suppresses switching noise from upstream DC/DC converters, preserving signal integrity in analog and RF sections. |
| Start-Up Time | 200μs-allows rapid power sequencing in multi-rail systems and low-latency wake-up from deep sleep modes. |
| Thermal Resistance θJA | 142°C/W (SOT223-ER on FR-4, 1oz Cu)-defines maximum power dissipation (e.g., 0.42W at TA = 85°C) before thermal shutdown triggers. |
Pinout & Package
SOT223-ER package with exposed thermal pad (pin 3 = GND/TAB); thermally enhanced for high-current LDO operation in space-constrained industrial and portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input voltage supply | Accepts 2V–6V; requires ≥1μF ceramic bypass capacitor placed adjacent to pin to suppress input ripple and ensure stability. |
| GND (Pin 2) | Ground reference | Primary ground return path; connects to thermal pad (pin 3) for optimal heat dissipation and low-noise reference. |
| OUT (Pin 3 / TAB) | Regulated output | Delivers fixed 3.3V; thermal pad must be soldered to large copper pour for θJA = 142°C/W performance. |
| EN (Pin ?) | Enable control input | Active-high logic interface (VIH ≥ 1.4V); tied to IN if always-on operation required; enables power sequencing with MCU GPIO. |
Key Features
| Feature | Design Value |
|---|---|
| Low-IQ regulation | 35μA typical quiescent current preserves battery life in always-on IoT sensors and wearables. |
| Fast transient response | Stable under 10mA ↔ 600mA load steps with <20mV undershoot/overshoot-critical for GSM/DSP burst-mode loads. |
| 1μF ceramic stability | No minimum ESR requirement; eliminates need for bulky tantalum or electrolytic capacitors, reducing BOM cost and footprint. |
| Integrated protection | Current limit (1.4A), short-circuit clamp (240mA), and thermal shutdown (+145°C) prevent field failures without external components. |
| Wide input range | 2V–6V operation supports diverse sources: Li-ion (2.7–4.2V), USB (4.75–5.25V), and dual-cell alkaline (2.4–3.2V). |
Applications
| FPGA I/O Power | Portable Medical Sensors |
|---|---|
|
Use Scenario: Powering configurable I/O banks on Xilinx Artix-7 or Intel MAX 10 FPGAs in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary 3.3V I/O rail regulator with fast load step response to accommodate dynamic pin reconfiguration and high-speed data capture. Use Value: 200μs start-up enables synchronized power-on with FPGA configuration; 65dB PSRR prevents digital noise coupling into analog front-end ADCs. |
Use Scenario: Supplying ultra-low-power biosignal amplifiers and Bluetooth LE transceivers in wearable ECG patches. IC Role / Device Role / Timing Role: Main system regulator delivering stable 3.3V to mixed-signal SoC during intermittent 10ms measurement bursts. Use Value: 35μA IQ extends battery life beyond 14 days on CR2032; 300mV dropout allows operation until battery reaches 3.6V. |
| Notebook Standby Rail | Industrial PLC I/O Module |
|
Use Scenario: Generating always-on 3.3V VCCIO for USB-C controller, RTC, and wake-on-LAN circuitry in clamshell laptops. IC Role / Device Role / Timing Role: Always-active LDO with EN pin controlled by EC firmware to gate power to peripheral controllers during S3/S4 sleep states. Use Value: Sub-1μA shutdown current (0.1μA typ.) eliminates parasitic drain; ±2% output accuracy ensures USB PHY compliance across temperature. |
Use Scenario: Providing isolated 3.3V logic supply for digital input conditioning and optocoupler drivers in DIN-rail mounted PLC modules. IC Role / Device Role / Timing Role: Secondary regulator fed from 5V DC/DC, delivering clean power to microcontroller GPIO and level-shifting interfaces. Use Value: 142°C/W θJA and thermal pad support 600mA continuous load in 70°C cabinet environments without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-33W5G-7 | SOT25 package, higher θJA (169°C/W), same 3.3V/600mA spec but lower max input (5.5V vs. 6V). | Limited to lower-power applications due to reduced thermal capability; unsuitable for sustained 600mA in enclosed enclosures. | Select only when board space constraints mandate SOT25 and thermal load remains below 300mA. |
| MCP1703T-3302E/MB | Microchip device; 250mV dropout at 250mA, 1.8μA IQ, but rated only to 250mA output. | Optimized for micropower sensor nodes-not viable for FPGA or PLC I/O loads requiring >300mA. | Prefer for battery lifetime-critical sub-250mA rails; avoid where peak current exceeds 250mA. |
Compared with AP7361-33W5G-7, the AP7365-33ERG-13 delivers superior thermal performance in SOT223 for sustained 600mA loads; versus MCP1703T-3302E/MB, it trades ultra-low IQ for 2.4× higher current capacity and robust protection-making it the sole fit for industrial I/O and FPGA power.
Availability
AP7365-33ERG-13 is available at Aetrix Electronics and suitable for FPGA I/O power, portable medical sensors, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AP7365-33ERG-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP7365 belongs to Diodes' high-performance LDO portfolio targeting battery-powered and thermally constrained systems, emphasizing low IQ, fast transient response, and robust fault protection without external components.
FAQ
What is the minimum input voltage required for stable 3.3V output at 600mA?
The AP7365-33ERG-13 requires VIN ≥ 3.6V to maintain regulated 3.3V output at 600mA, based on its 300mV dropout specification. Below 3.6V, output voltage drops linearly with input; operation below 2.0V is outside absolute maximum ratings and not functional.
Can the EN pin be left floating, or must it be actively driven?
The EN pin must not be left floating-it has no internal pull-up/down. For always-on operation, tie EN directly to IN. For controlled enable/disable, drive with a logic signal meeting VIH ≥ 1.4V and VIL ≤ 0.4V; leakage is <1μA, so standard GPIO suffices.
Is a minimum load required for output stability?
No minimum load is required. The AP7365-33ERG-13 remains stable and regulated from zero load to 600mA, verified per datasheet Section 8.3 ("No Load Stability"). This eliminates need for dummy loads in standby or low-power modes.
What PCB layout practices maximize thermal performance in SOT223-ER?
Maximize thermal performance by soldering the exposed thermal pad (pin 3/TAB) to a ≥100mm² copper pour with ≥4 thermal vias (0.3mm diameter) connecting to inner/ground planes. Keep IN and OUT traces wide (>0.5mm) and place 1μF ceramic capacitors within 2mm of respective pins.
AP7365-33ERG-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-223R
AP7365-33ERG-13 FAQ
1.How can I place an order for AP7365-33ERG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7365-33ERG-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 AP7365-33ERG-13 reliable?
The price and inventory of AP7365-33ERG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7365-33ERG-13 is usually 5 days.
3.What payment methods are accepted for AP7365-33ERG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7365-33ERG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7365-33ERG-13?
AP7365-33ERG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7365-33ERG-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 AP7365-33ERG-13?
For technical support, including AP7365-33ERG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7365-33ERG-13 requirements.
6.How does Aetrix verify that AP7365-33ERG-13 is sourced from the original manufacturer or authorized distributors?
All AP7365-33ERG-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 AP7365-33ERG-13 meets industry standards.
7.What is the process for return or replacement of AP7365-33ERG-13?
All AP7365-33ERG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7365-33ERG-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 AP7365-33ERG-13 part is unused and in its original packaging.
Return procedure for AP7365-33ERG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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