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Diodes Incorporated AP7347DQ-29FDZW-7
- Part No.:
- AP7347DQ-29FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347DQ-29FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7347DQ-29FDZW-7 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 500mA low-dropout linear regulator with fixed 2.9V 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 cameras and infotainment systems.
For engineers reviewing the AP7347DQ-29FDZW-7 datasheet, AP7347DQ-29FDZW-7 pinout, AP7347DQ-29FDZW-7 application, or AP7347DQ-29FDZW-7 equivalent, key selection criteria include its WDFN2020-6 wettable flank package, 0.32V max dropout at 500mA (for VOUT ≥ 4.0V), -40°C to +125°C operating ambient range, and AEC-Q100 Grade 1 qualification for automotive power integrity.
Technical Context
The AP7347DQ-29FDZW-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown logic. Its internal architecture supports fast load transient response (<10µs settling) and enables stable operation with only 1µF ceramic input/output capacitors.
It implements active discharge via an internal 30Ω N-channel MOSFET when disabled (EN = low), ensuring rapid VOUT decay to prevent back-powering. The EN pin accepts logic-level control with 0–0.5V low threshold and 1.25–5.5V high threshold, supporting direct microcontroller interfacing without level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9V ±1% (guaranteed over -40°C to +125°C junction temp) |
| Max Output Current | 500mA continuous; fold-back short-circuit current ~180mA |
| PSRR | 75dB at 1kHz - suppresses ripple from noisy upstream DC/DC converters |
| Output Noise | 60µVrms (10Hz–100kHz) - critical for RF and camera sensor analog supply rails |
| Quiescent Current | 60µA typical - enables always-on subsystems with ultra-low standby power |
| Dropout Voltage | 0.32V max at 500mA (for VOUT ≥ 4.0V); 0.42V max at 500mA for 2.1V ≤ VOUT < 2.5V |
| Thermal Shutdown | Triggers at +170°C with +20°C hysteresis - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
AP7347DQ-29FDZW-7 uses the W-DFN2020-6 (SWP) wettable flank package (2.0mm × 2.0mm, 0.75mm height), optimized for automated optical inspection (AOI) and high-density automotive PCB layouts. The exposed pad (EP) must be connected to GND or large copper pour for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.9V output; requires local 1µF ceramic capacitor within 2mm of pin |
| 2, 5 | NC | No-connect terminals; recommended to tie to GND for thermal enhancement and EMI reduction |
| 3 | GND | Power ground return; must connect directly to low-impedance ground plane |
| 4 | EN | Active-high enable; drives regulator ON/OFF; must not float; 1.25V min logic high |
| 6 | VIN | Input supply (1.7–5.5V); requires 1µF ceramic decoupling capacitor adjacent to pin |
| EP | Exposed Pad | Thermal pad; connect to GND plane with ≥4 thermal vias (0.3mm diameter) for θJA = 54°C/W |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation in automotive ECUs and ADAS modules |
| Auto-discharge function | 30Ω internal NMOS discharges VOUT rapidly on shutdown - prevents backfeed into powered-down circuits |
| Low-noise 60µVrms output | Enables clean power for image sensors and RF transceivers without external filtering |
| Wettable flank packaging | Facilitates AOI solder-joint inspection in automotive SMT lines - improves process yield and field reliability |
| 60µA quiescent current | Supports >10-year battery-backed operation in telematics and always-on domain controllers |
Applications
| ADAS Camera Power Rail | Infotainment SoC Core Supply |
|---|---|
|
Use Scenario: Powering 12MP automotive surround-view camera modules with rolling shutter sensors and ISP processors. IC Role / Device Role / Timing Role: Primary LDO delivering ultra-low-noise 2.9V bias to image sensor analog front-end and PLL clock generation circuitry. Use Value: 60µVrms noise and 75dB PSRR prevent horizontal banding and jitter in captured video under engine EMI conditions. |
Use Scenario: Providing stable 2.9V core voltage to application processors in head-unit infotainment systems. IC Role / Device Role / Timing Role: Post-regulator for DC/DC converter outputs, ensuring tight voltage accuracy and fast transient response during UI rendering bursts. Use Value: ±1% output accuracy and <10µs load transient recovery maintain processor stability during multi-core wake-up events. |
| Automotive Wireless V2X Module | Body Control Module Low-Power Subsystem |
|
Use Scenario: Supplying 2.9V to IEEE 802.11p DSRC or C-V2X modem ICs in vehicle-to-everything communication units. IC Role / Device Role / Timing Role: Noise-isolated power source for RF transceiver analog sections and crystal oscillator buffers. Use Value: High PSRR rejects switching noise from nearby buck converters, preserving EVM and reducing packet error rate. |
Use Scenario: Powering CAN transceiver bias, EEPROM, and real-time clock in body control modules with extended sleep modes. IC Role / Device Role / Timing Role: Always-on LDO with enable control, activated only during wake events to minimize system leakage. Use Value: 60µA IQ and 0.01µA standby current extend battery life in 15-year vehicle service cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73329PDQNR | 2.9V fixed, 300mA, 55dB PSRR @ 1kHz, no auto-discharge, SOT-23-5 package | Lacks AEC-Q100 qualification and wettable flanks; unsuitable for automated AOI in Tier-1 production | Select only for non-automotive prototypes where cost and footprint are prioritized over qualification and manufacturability |
| NCP114AMX29TBG | 2.9V fixed, 300mA, ±2% accuracy, 65dB PSRR @ 1kHz, 120µA IQ, DFN6 2×2 | Lower PSRR and higher quiescent current; not AEC-Q100 Grade 1 qualified | Acceptable for cost-sensitive interior modules (e.g., seat controls) where full ADAS-grade performance is not required |
Compared with TLV73329PDQNR and NCP114AMX29TBG, the AP7347DQ-29FDZW-7 delivers 100mA higher output current, 10dB higher PSRR, 60% lower quiescent current, and full automotive process control - making it the only option qualified for safety-critical ADAS power domains.
Availability
AP7347DQ-29FDZW-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head-units, V2X wireless communication systems, and body control units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AP7347DQ-29FDZW-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 manufacturer specializing in discrete, analog, and mixed-signal devices, with design centers in Asia, Europe, and the U.S., and manufacturing in IATF 16949-certified facilities.
The AP7347DQ series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, high-reliability power rails in ADAS, infotainment, and vehicle networking systems.
FAQ
What is the maximum allowable input voltage for AP7347DQ-29FDZW-7?
The absolute maximum input voltage is 6.0V per the datasheet Absolute Maximum Ratings table. However, for reliable operation across the full -40°C to +125°C ambient range, VIN must remain between 1.7V and 5.5V as specified in Recommended Operating Conditions. Exceeding 5.5V risks permanent damage even if duration is brief.
Does AP7347DQ-29FDZW-7 require an external pull-up resistor on the EN pin?
No external pull-up is required. When EN control is unused, the datasheet explicitly recommends tying EN directly to VIN to ensure continuous operation. The EN pin has no internal pull-up; leaving it floating violates the "must not be floating" requirement and may cause erratic enable/disable behavior due to noise coupling.
Can AP7347DQ-29FDZW-7 be used with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with ceramic output capacitors as low as 0.47µF, per Diodes' application note AN-4001. However, 1µF is the recommended minimum for optimal transient response and phase margin across temperature and load variations; using smaller values increases risk of instability under heavy load steps.
Is the exposed pad (EP) on the W-DFN2020-6 package electrically connected internally?
No - the exposed pad is not electrically connected to any internal die node. It serves solely as a thermal conduction path. Diodes' datasheet Pin Descriptions section states it should be connected to GND or left floating, but never used as a functional GND electrode; best practice is to solder it to a GND plane with ≥4 thermal vias for optimal θJA performance.
AP7347DQ-29FDZW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- 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):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 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, Wettable Flank
- Supplier Device Package:
- W-DFN2020-6 (SWP) (Type A1)
AP7347DQ-29FDZW-7 FAQ
1.How can I place an order for AP7347DQ-29FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-29FDZW-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-29FDZW-7 reliable?
The price and inventory of AP7347DQ-29FDZW-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-29FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-29FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-29FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-29FDZW-7?
AP7347DQ-29FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-29FDZW-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-29FDZW-7?
For technical support, including AP7347DQ-29FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-29FDZW-7 requirements.
6.How does Aetrix verify that AP7347DQ-29FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-29FDZW-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-29FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-29FDZW-7?
All AP7347DQ-29FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-29FDZW-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-29FDZW-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-29FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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