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Diodes Incorporated AP7365-39SNG-7
- Part No.:
- AP7365-39SNG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7365-39SNG-7.pdf
- Description:
- IC REG LIN 3.9V 600MA 6DFN2020
- Quantity:
- Payment:
- Shipping:
Inventory:1,325
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Product details
Overview
AP7365-39SNG-7 from Diodes Incorporated is a fixed-output 3.9V, 600mA low-dropout linear regulator in U-DFN2020-6 package, featuring 35μA quiescent current, 300mV dropout at full load, and fast 200μs startup. It integrates enable control, thermal shutdown, and current limiting, and is optimized for battery-powered portable electronics requiring stable low-noise voltage regulation.
For engineers reviewing the AP7365-39SNG-7 datasheet, AP7365-39SNG-7 pinout, AP7365-39SNG-7 application, or AP7365-39SNG-7 equivalent, key selection criteria include output accuracy (±2%), PSRR (65dB @ 1kHz), input voltage range (2V–6V), and compatibility with 1μF ceramic output capacitors without minimum load requirements.
Technical Context
The AP7365-39SNG-7 implements a PMOS pass transistor architecture enabling low dropout (300mV @ 600mA, VOUT ≥ 2.5V) and ultra-low quiescent current (35μA typ). Its internal 0.8V bandgap reference and error amplifier deliver tight output regulation across –40°C to +85°C ambient.
It features active-high EN control with logic-compatible thresholds (VIH = 1.4V min, VIL = 0.4V max), integrated short-circuit protection (240mA clamp), and thermal shutdown activation at +145°C with +15°C hysteresis - all operating without external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.9V ±2% over –40°C to +85°C and full load range - ensures reliable core/I/O rail compliance for 3.3V–4.0V logic systems. |
| Max Output Current | 600mA continuous - supports moderate-power FPGA I/O banks, microcontroller peripherals, and sensor signal chains. |
| Dropout Voltage | 300mV at 600mA (VOUT ≥ 2.5V) - enables operation from 4.2V Li-ion batteries down to end-of-discharge (~3.5V input still regulates). |
| Quiescent Current | 35μA typical - extends battery life in always-on monitoring circuits and low-duty-cycle IoT endpoints. |
| PSRR | 65dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Start-Up Time | 200μs - meets real-time wake-up timing for DSPs and RF transceivers exiting deep-sleep modes. |
| Input Voltage Range | 2.0V to 6.0V - accommodates single-cell Li-ion (2.7–4.2V), USB-powered (4.5–5.5V), and dual-cell alkaline inputs. |
Pinout & Package
AP7365-39SNG-7 uses the U-DFN2020-6 (SN) package: 2.0mm × 2.0mm, 0.5mm pitch, thermally enhanced bottom-exposed pad. Pin 1 is IN; Pin 2 is OUT; Pin 3 is GND; Pin 4 is EN; Pin 5 and 6 are NC (no connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input voltage supply | Accepts 2V–6V input; requires ≥1μF ceramic bypass capacitor placed adjacent to pin for stability and noise rejection. |
| OUT (Pin 2) | Regulated output | Delivers fixed 3.9V; stable with ≥1μF ceramic capacitor (ESR >15mΩ); no minimum load required. |
| GND (Pin 3) | Power ground reference | Primary return path for input/output currents; must be connected to low-impedance PCB ground plane. |
| EN (Pin 4) | Enable control input | Active-high logic interface (VIH ≥1.4V); ties to IN for always-on operation; enables power sequencing in multi-rail systems. |
| NC (Pins 5 & 6) | No connection | Unbonded terminals; must remain unconnected and unpopulated on PCB to avoid parasitic coupling or mechanical stress. |
Key Features
| Feature | Design Value |
|---|---|
| Low ESR capacitor compatibility | Stable with 1μF ceramic output capacitor (ESR >15mΩ) - eliminates need for bulky tantalum or electrolytic caps in space-constrained designs. |
| Fast transient response | Minimal undershoot/overshoot during 10mA ↔ 600mA load steps - sustains clean supply for high-speed digital loads like GSM baseband ICs. |
| Thermal protection with hysteresis | Shuts down at +145°C junction temperature and re-enables at +130°C - prevents latch-up and enables safe self-recovery under overload conditions. |
| Short-circuit current limit | Clamps output to 240mA during GND fault - protects internal pass element while allowing downstream circuit diagnostics. |
| Lead-free & green compliance | Fully RoHS 3 compliant, halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) - satisfies strict environmental requirements for consumer and industrial markets. |
Applications
| Wearable Health Monitor | Industrial Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by coin-cell or small Li-ion battery with intermittent BLE transmission. IC Role / Device Role / Timing Role: Primary 3.9V supply for analog front-end (AFE) and BLE SoC I/O domain, enabled synchronously with measurement cycles. Use Value: 35μA IQ minimizes standby drain; 200μs startup enables rapid sensor activation; 300mV dropout preserves usable battery voltage down to ~3.5V. |
Use Scenario: Battery-backed wireless temperature/humidity node deployed in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Regulated 3.9V rail for precision ADC, MCU, and sub-GHz transceiver - maintaining accuracy across –40°C to +85°C. Use Value: ±2% output accuracy and <0.2%/V line regulation ensure consistent ADC reference; thermal shutdown prevents field failure during enclosure overheating. |
| Portable Diagnostic Handheld | Edge AI Camera Module |
Use Scenario: Handheld ultrasound or point-of-care imaging device using rechargeable Li-ion and multiple voltage rails. IC Role / Device Role / Timing Role: Secondary 3.9V supply for display interface and touch controller, sequenced after main 1.2V core rail. Use Value: EN pin enables precise power sequencing; 65dB PSRR isolates sensitive analog video paths from noisy DC/DC switching noise. |
Use Scenario: Compact vision module with embedded NPU, image sensor, and Wi-Fi/Bluetooth coexistence. IC Role / Device Role / Timing Role: Dedicated 3.9V rail for high-speed MIPI CSI-2 interface and sensor biasing, decoupled from processor core supply. Use Value: Fast load transient response prevents frame corruption during burst pixel readout; U-DFN2020-6 footprint saves board area in 12mm × 12mm modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3902E/MB | Higher IQ (1.8μA vs 35μA), lower PSRR (55dB @ 1kHz), same 3.9V fixed output and 250mA rating. | Optimized for ultra-low-power sleep states but less suitable for dynamic loads due to slower transient response and lower current capability. | Select when standby current dominates system budget and peak load ≤250mA; avoid for 600mA burst applications. |
| Torex XC6210B392MR-G | Same 3.9V output, 600mA rating, and U-DFN2020-6 package; IQ = 45μA, dropout = 350mV @ 600mA, PSRR = 60dB @ 1kHz. | Nearly identical performance envelope but slightly higher dropout and lower PSRR - acceptable where margin exists in input headroom or noise immunity. | Valid drop-in alternative if Diodes stock is constrained; verify thermal performance with actual PCB layout due to marginally higher θJA (135°C/W vs 132°C/W). |
Compared with MCP1703T-3902E/MB and XC6210B392MR-G, AP7365-39SNG-7 delivers superior combination of 600mA drive, 35μA IQ, and 65dB PSRR in the smallest footprint - making it optimal for compact, high-dynamic-range portable systems where both efficiency and noise rejection are critical.
Availability
AP7365-39SNG-7 is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, portable diagnostic handhelds, and edge AI camera modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AP7365-39SNG-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 solutions, with design and manufacturing facilities certified to IATF 16949 and ISO 9001 standards.
The AP7365 series belongs to Diodes' high-performance LDO portfolio, engineered specifically for battery-powered portable electronics demanding ultra-low IQ, fast transient response, and robust protection features across extended temperature ranges.
FAQ
What is the recommended input and output capacitor configuration for AP7365-39SNG-7?
A 1μF X5R/X7R ceramic capacitor is required between IN and GND, and another 1μF ceramic capacitor between OUT and GND. Both must be placed within 2mm of their respective pins. The output capacitor must have ESR >15mΩ; higher capacitance improves transient response but is not required for stability.
Can AP7365-39SNG-7 operate without any load connected to the output?
Yes. The AP7365-39SNG-7 remains stable and regulated with zero load current. No minimum load is required - a key advantage for always-on monitoring circuits where downstream circuitry may be fully powered down.
How does the EN pin behave during power-up, and what happens if left floating?
The EN pin is not internally biased; if left floating, the device behavior is undefined and may fail to enable reliably. It must be actively driven high (≥1.4V) to turn on or pulled low (≤0.4V) to disable. For always-on operation, tie EN directly to IN.
Is AP7365-39SNG-7 qualified for automotive applications?
No. AP7365-39SNG-7 is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP7365Q series) with PPAP documentation and IATF 16949 manufacturing - contact Aetrix for qualified alternatives.
AP7365-39SNG-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):
- 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:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2020-6
AP7365-39SNG-7 FAQ
1.How can I place an order for AP7365-39SNG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7365-39SNG-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 AP7365-39SNG-7 reliable?
The price and inventory of AP7365-39SNG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7365-39SNG-7 is usually 5 days.
3.What payment methods are accepted for AP7365-39SNG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7365-39SNG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7365-39SNG-7?
AP7365-39SNG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7365-39SNG-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 AP7365-39SNG-7?
For technical support, including AP7365-39SNG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7365-39SNG-7 requirements.
6.How does Aetrix verify that AP7365-39SNG-7 is sourced from the original manufacturer or authorized distributors?
All AP7365-39SNG-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 AP7365-39SNG-7 meets industry standards.
7.What is the process for return or replacement of AP7365-39SNG-7?
All AP7365-39SNG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7365-39SNG-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 AP7365-39SNG-7 part is unused and in its original packaging.
Return procedure for AP7365-39SNG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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