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Diodes Incorporated AP7347DQ-11W5-7
- Part No.:
- AP7347DQ-11W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7347DQ-11W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
AP7347DQ-11W5-7 from Diodes Incorporated is an automotive-grade 500mA low-dropout linear regulator with fixed 1.1V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 60µA quiescent current. It features enable control, thermal shutdown, short-circuit protection, and auto-discharge functionality-designed for noise-sensitive power rails in ADAS camera modules and infotainment domain controllers.
For engineers reviewing the AP7347DQ-11W5-7 datasheet, AP7347DQ-11W5-7 pinout, AP7347DQ-11W5-7 application, or AP7347DQ-11W5-7 equivalent, this page delivers verified technical context, AEC-Q100-compliant operating parameters, SOT25 package layout guidance, and validated alternatives for automotive LDO selection.
Technical Context
The AP7347DQ-11W5-7 employs a CMOS-based architecture with integrated voltage reference, error amplifier, current limit circuit, and NMOS pass transistor enabling fast load transient response and stable regulation across -40°C to +125°C ambient. Its auto-discharge function uses a 30Ω internal N-channel switch between VOUT and GND when EN is low.
It operates over 1.7V–5.5V input range with dropout voltage as low as 0.75V at 500mA for 1.1V output, supports 1.0V–5.0V fixed-output variants, and achieves ±30ppm/°C output voltage temperature coefficient-critical for precision rail stability in automotive RF and sensor subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1V ±1% - ensures stable core voltage for low-power microcontrollers and image signal processors. |
| Max Output Current | 500mA - sufficient to power dual-core automotive MCUs or high-speed SerDes PHYs without external boost. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters in mixed-signal domains. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves SNR in analog front-ends of radar receivers and camera ISPs. |
| Quiescent Current | 60µA - enables always-on functionality in vehicle wake-up circuits while meeting ISO 26262 ASIL-B leakage budgets. |
| Dropout Voltage | 0.75V @ 500mA - allows operation from 1.85V input, supporting battery brownout conditions down to 1.8V. |
| Enable Threshold | VEN(H) = 1.25V min, VEN(L) = 0.5V max - compatible with 1.8V/3.3V logic-level microcontroller GPIOs. |
Pinout & Package
SOT25 (Type A1) package: 2.9mm × 2.8mm × 1.45mm body, wettable flank-compatible, with exposed pad not electrically connected but recommended for thermal copper tie to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 1.7V–5.5V; requires ≥1µF ceramic decoupling capacitor placed adjacent to pin for transient immunity. |
| 2 (EN) | Enable Control Input | Active-high logic; must be driven-not floated-to avoid erratic startup; internal pull-down not present. |
| 3 (GND) | Analog/Digital Ground Reference | Primary return path for input/output currents; connects to PCB ground plane to minimize impedance-induced offset. |
| 4 (VOUT) | Regulated Output | Delivers 1.1V ±1%; requires ≥1µF ceramic output capacitor near pin to ensure stability and load step response. |
| 5 (NC) | No Connect | Internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (-40°C to +125°C), PPAP-capable, manufactured in IATF 16949-certified facilities-meets automotive production traceability and change control requirements. |
| Auto-Discharge Function | 30Ω internal NMOS switch discharges VOUT to GND within microseconds after EN deactivation-prevents floating rail issues during system sleep/wake transitions. |
| Low-Noise Regulation | 60µVrms noise floor enables direct powering of RF synthesizers and ADC reference supplies without additional filtering. |
| Thermal Protection | 170°C shutdown threshold with 20°C hysteresis prevents latch-up during sustained overload or poor heatsinking in compact ADAS enclosures. |
| High PSRR Architecture | 75dB rejection at 1kHz and strong mid-band attenuation (>50dB up to 100kHz) isolates sensitive analog blocks from DC/DC ripple. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
|
Use Scenario: Powering audio DSP cores and display interface ICs in head-unit systems with shared 3.3V/5V DC/DC rails. IC Role / Device Role / Timing Role: Low-noise post-regulator delivering clean 1.1V to SoC core logic and PLL supply domains. Use Value: Prevents audible noise coupling into Class-D amplifiers and eliminates jitter-induced pixel artifacts on TFT displays. |
Use Scenario: Biasing VCOs and LNA stages in 5G-V2X telematics modules operating near cellular baseband noise sources. IC Role / Device Role / Timing Role: Dedicated LDO supplying regulated 1.1V to RF transceiver analog sections. Use Value: Maintains phase noise performance below -110dBc/Hz at 100kHz offset by rejecting switching noise from PMIC buck converters. |
| Cameras | Automotive POL in ADAS |
|
Use Scenario: Powering CIS image sensors and ISP pipelines in surround-view camera ECUs with strict EMI limits. IC Role / Device Role / Timing Role: Point-of-load regulator for sensor analog front-end and digital core domains. Use Value: Enables >70dB SNR in 12-bit RAW capture by suppressing supply-induced fixed-pattern noise and temporal noise spikes. |
Use Scenario: Providing isolated 1.1V rail to radar processor SoCs in front-corner ADAS ECUs with limited board space. IC Role / Device Role / Timing Role: Compact, thermally robust LDO replacing discrete solutions for safety-critical vision processing units. Use Value: Achieves 125°C junction operation with 54°C/W θJA in WDFN2020-6, eliminating need for external thermal vias in dense multi-layer PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73311PDBVR | Lower max current (300mA), no auto-discharge, 65dB PSRR, 30µVrms noise, non-AEC-Q100. | Limited to non-safety-critical infotainment peripherals; unsuitable for ADAS camera or radar power domains. | Select only for cost-sensitive cabin electronics where AEC-Q100 and 500mA capability are not required. |
| NCP114AMX11T2G | AEC-Q100 Grade 2, 300mA, 70dB PSRR, no auto-discharge, 40µVrms noise, higher dropout (0.9V @ 300mA). | Acceptable for lower-power ADAS sub-modules but cannot support full 500mA camera ISP loads under thermal stress. | Use where footprint compatibility with SOT23-5 is mandatory and 500mA headroom is not needed. |
Compared with TLV73311PDBVR and NCP114AMX11T2G, the AP7347DQ-11W5-7 uniquely combines AEC-Q100 Grade 1 qualification, 500mA output, auto-discharge, and 75dB PSRR-making it the only drop-in solution for thermally constrained, noise-sensitive 1.1V POL rails in next-generation ADAS ECUs.
Availability
AP7347DQ-11W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, radar processing units, and telematics gateways requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AP7347DQ-11W5-7 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 devices, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q200 and AEC-Q100 standards.
The AP7347DQ belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for high-reliability point-of-load regulation in ADAS, infotainment, and body electronics-emphasizing low noise, high PSRR, and robust thermal behavior under real-world vehicle conditions.
FAQ
What is the maximum allowable input voltage for AP7347DQ-11W5-7?
The absolute maximum input voltage is 6.0V, but recommended operating range is 1.7V to 5.5V. Exceeding 5.5V risks permanent damage per Absolute Maximum Ratings. For 1.1V output, minimum functional VIN is 1.85V (accounting for 0.75V dropout at 500mA), ensuring reliable operation during cold-crank battery dips.
Does AP7347DQ-11W5-7 require an external discharge resistor?
No. The device integrates an auto-discharge NMOS switch (30Ω typical) between VOUT and GND, activated automatically when EN is pulled low. This eliminates need for external components while achieving rapid VOUT decay-critical for deterministic power sequencing in automotive domain controllers.
How does the SOT25 package handle thermal dissipation at 500mA?
In SOT25 (Type A1), thermal resistance is θJA = 140°C/W. At 500mA with 0.75V dropout (0.375W dissipation), junction-to-ambient rise is ~52.5°C above ambient. With proper PCB copper area (≥250mm² GND pour under EP), actual rise drops to ≤35°C-well within the +150°C max junction rating.
Is AP7347DQ-11W5-7 compatible with standard 1.0µF ceramic capacitors?
Yes. The regulator is stable with 1.0µF X5R/X7R ceramic capacitors on both input and output. Layout best practice requires placing CIN within 2mm of VIN-GND and COUT within 2mm of VOUT-GND, using wide traces and minimizing loop area to maintain PSRR and transient response performance.
AP7347DQ-11W5-7 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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.95V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7347DQ-11W5-7 FAQ
1.How can I place an order for AP7347DQ-11W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-11W5-7 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 AP7347DQ-11W5-7 reliable?
The price and inventory of AP7347DQ-11W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347DQ-11W5-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-11W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-11W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-11W5-7?
AP7347DQ-11W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-11W5-7 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 AP7347DQ-11W5-7?
For technical support, including AP7347DQ-11W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-11W5-7 requirements.
6.How does Aetrix verify that AP7347DQ-11W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-11W5-7 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 AP7347DQ-11W5-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-11W5-7?
All AP7347DQ-11W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-11W5-7, 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 AP7347DQ-11W5-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-11W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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