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Diodes Incorporated AP7365-39YG-13
- Part No.:
- AP7365-39YG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7365-39YG-13.pdf
- Description:
- IC REG LINEAR 3.9V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
AP7365-39YG-13 from Diodes Incorporated is a fixed-output 3.9V, 600mA low-dropout linear regulator with 35μA quiescent current, 300mV dropout at full load, and enable control. It integrates current limit, thermal shutdown, and fast transient response for battery-powered FPGA I/O rails and portable consumer electronics requiring stable low-noise voltage regulation.
For engineers reviewing the AP7365-39YG-13 datasheet, AP7365-39YG-13 pinout, AP7365-39YG-13 application, or AP7365-39YG-13 equivalent, key selection criteria include dropout voltage at 600mA, PSRR at 1kHz, EN logic thresholds, thermal resistance in SOT89-Y package, and compatibility with 1μF ceramic output capacitors.
Technical Context
The AP7365-39YG-13 implements a PMOS pass transistor architecture enabling low dropout (300mV @ 600mA) and ultra-low quiescent current (35μA typ). Its internal 0.8V bandgap reference and error amplifier deliver ±2% output accuracy across –40°C to +85°C ambient.
It features active-high enable with VIH ≥1.4V and VIL ≤0.4V, thermal shutdown at +145°C with +15°C hysteresis, and short-circuit protection limiting output current to 240mA under fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.9V ±2% over –40°C to +85°C; enables direct replacement of legacy 3.9V LDOs without resistor network. |
| Max Output Current | 600mA continuous; supports FPGA I/O banks and microcontroller peripherals without external current boosting. |
| Dropout Voltage | 300mV at 600mA (VOUT ≥2.5V); allows operation from 4.2V Li-ion battery down to 3.9V output until end-of-discharge. |
| Quiescent Current | 35μA typical; extends battery life in always-on sensor nodes and standby power domains. |
| PSRR | 65dB at 1kHz; suppresses switching noise from adjacent DC/DC converters feeding mixed-signal SoCs. |
| Start-Up Time | 200μs typical; meets real-time wake-up requirements for low-power MCU sleep-to-active transitions. |
| Thermal Resistance θJA | 133°C/W in SOT89-Y package; requires minimal copper area for thermal management in space-constrained PCBs. |
Pinout & Package
AP7365-39YG-13 is packaged in SOT89-Y (Y Package), a 3-pin surface-mount package with exposed thermal pad on the tab side. Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT (tab-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input voltage supply | Bypassed to GND with ≥1μF MLCC; must be routed with wide trace to minimize impedance and input ripple. |
| GND (Pin 2) | Ground reference | Common return path for input/output capacitors and thermal pad; connects directly to PCB ground plane. |
| OUT (Pin 3 / Tab) | Regulated output | Delivers 3.9V ±2%; tab connection provides low-inductance path to ground and enhances thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout operation | 300mV at 600mA enables use with single-cell Li-ion (4.2V → 3.9V) through full discharge cycle. |
| Fast transient response | Stable under 10mA ↔ 600mA load steps; prevents voltage droop during FPGA configuration bursts. |
| Enable control interface | VIH ≥1.4V ensures reliable turn-on from 1.8V/3.3V GPIOs; eliminates need for level-shifting circuitry. |
| Thermal protection | +145°C shutdown with +15°C hysteresis prevents latch-up during sustained overload or poor heatsinking. |
| Capacitor stability | Stable with 1μF ceramic output capacitor (ESR >15mΩ); reduces BOM count vs. electrolytic-based LDOs. |
Applications
| Portable Medical Sensors | FPGA I/O Power Rails |
|---|---|
Use Scenario: Wearable ECG monitor powered by coin-cell battery with intermittent Bluetooth transmission. IC Role / Device Role / Timing Role: Primary 3.9V supply for analog front-end and BLE radio; regulated output maintains ADC reference stability during RF transmit bursts. Use Value: 35μA IQ minimizes standby drain; 200μs start-up enables rapid wake-up for on-demand measurements without timing jitter. | Use Scenario: Low-cost industrial FPGA development board with configurable I/O banks. IC Role / Device Role / Timing Role: Dedicated 3.9V LDO for FPGA I/O bank powering RS-485 transceivers and opto-isolators. Use Value: 65dB PSRR at 1kHz rejects noise from shared 5V DC/DC converter; 300mV dropout ensures margin under 4.2V input sag. |
| Smart Home Hub Controllers | USB-C Peripheral Power |
Use Scenario: Battery-backed smart speaker hub with voice processing ASIC and Wi-Fi module. IC Role / Device Role / Timing Role: Secondary 3.9V rail for audio codec and memory interface; enabled only during active playback. Use Value: EN pin allows dynamic power gating; ±2% accuracy ensures consistent DAC linearity across temperature. | Use Scenario: USB-C powered docking station supplying 3.9V to legacy peripherals via custom cable. IC Role / Device Role / Timing Role: Post-regulator converting 5V USB-C VBUS to precise 3.9V for legacy 3.3V–4.0V devices. Use Value: 600mA rating supports multiple peripherals; short-circuit protection (240mA clamp) prevents bus fault propagation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-39YG-13 | 300mA max output, same 3.9V fixed output, identical SOT89-Y package and pinout. | Lower current capability limits use to low-power MCU cores or sensors-not FPGA I/O or multi-peripheral rails. | Select when load current remains ≤300mA and cost reduction is prioritized over headroom. |
| MCP1700-3902E/TO | 250mA max, 6μA IQ, TO-92 package; no enable pin; 4% output tolerance vs. ±2%. | Lacks EN control and thermal shutdown; unsuitable for battery-powered systems requiring dynamic power management. | Choose only for ultra-low-power, non-critical, cost-sensitive applications where enable and protection are omitted. |
Compared with AP7365-39YG-13, AP7361-39YG-13 trades 300mA current headroom for lower cost in identical footprint, while MCP1700-3902E/TO sacrifices enable, protection, and accuracy for extreme IQ reduction-making AP7365-39YG-13 optimal for robust, medium-current, battery-aware designs.
Availability
AP7365-39YG-13 is available at Aetrix Electronics and suitable for FPGA I/O power, portable medical sensors, smart home controllers, and USB-C peripheral power requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP7365-39YG-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP7365 series belongs to Diodes' precision LDO portfolio, engineered specifically for battery-powered and space-constrained applications demanding low IQ, fast transient response, and robust fault protection in compact packages.
FAQ
What is the minimum input voltage required for AP7365-39YG-13 to maintain regulation?
The AP7365-39YG-13 requires VIN ≥ 4.2V to sustain 3.9V output at 600mA load, based on its 300mV dropout specification. At lighter loads, it regulates down to VIN = 4.0V (100mV dropout), but design margin should assume 4.2V minimum for full-rated current across temperature.
Can AP7365-39YG-13 operate without an output capacitor?
No. The AP7365-39YG-13 requires a minimum 1μF ceramic output capacitor with ESR >15mΩ for stability. Omitting it causes oscillation and unregulated output; larger values improve transient response but do not replace the mandatory 1μF minimum.
Is the SOT89-Y package thermally enhanced compared to standard SOT89?
Yes. The SOT89-Y package uses the tab as the OUT terminal and thermal path, providing lower thermal resistance (θJA = 133°C/W) than non-tab variants. PCB layout must connect the tab to a ≥100mm² copper pour for effective heat dissipation.
Does AP7365-39YG-13 support reverse polarity protection?
No. AP7365-39YG-13 lacks integrated reverse-voltage protection. Applying negative voltage to IN or OUT relative to GND may damage the device. External protection diodes or MOSFET-based circuits are required in systems with potential reverse-battery or hot-swap conditions.
AP7365-39YG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- 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):
- 3.9V
- 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-89-3
AP7365-39YG-13 FAQ
1.How can I place an order for AP7365-39YG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7365-39YG-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 AP7365-39YG-13 reliable?
The price and inventory of AP7365-39YG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7365-39YG-13 is usually 5 days.
3.What payment methods are accepted for AP7365-39YG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7365-39YG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7365-39YG-13?
AP7365-39YG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7365-39YG-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 AP7365-39YG-13?
For technical support, including AP7365-39YG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7365-39YG-13 requirements.
6.How does Aetrix verify that AP7365-39YG-13 is sourced from the original manufacturer or authorized distributors?
All AP7365-39YG-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 AP7365-39YG-13 meets industry standards.
7.What is the process for return or replacement of AP7365-39YG-13?
All AP7365-39YG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7365-39YG-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 AP7365-39YG-13 part is unused and in its original packaging.
Return procedure for AP7365-39YG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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