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Diodes Incorporated AP7343DQ-30FDZW-7
- Part No.:
- AP7343DQ-30FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343DQ-30FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7343DQ-30FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 3.0V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, thermal shutdown, short-circuit protection, and AEC-Q100 Grade 1 qualification for use in ADAS camera power rails and infotainment domain controllers.
For engineers reviewing the AP7343DQ-30FDZW-7 datasheet, AP7343DQ-30FDZW-7 pinout, AP7343DQ-30FDZW-7 application, or AP7343DQ-30FDZW-7 equivalent, key selection criteria include its W-DFN2020-6 (SWP) Type A1 package, discharge function, -40°C to +125°C operating range, and guaranteed 300mA output under automotive transient conditions.
Technical Context
The AP7343DQ-30FDZW-7 integrates a CMOS-based LDO architecture with internal voltage reference, error amplifier, current limit circuit, and active discharge path activated during shutdown. Its design targets noise-sensitive automotive subsystems requiring stable local regulation with fast load transient response and minimal supply coupling.
It operates across 1.7V–5.25V input range and delivers 3.0V ±1% output with dropout as low as 0.22V at 300mA (for VOUT > 3.0V). The built-in discharge function rapidly pulls VOUT to GND when EN is low, preventing floating rail conditions in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% at +25°C; maintains regulation over -40°C to +125°C ambient |
| Max Output Current | 300mA continuous; foldback current limit clamps to ~55mA during short-circuit |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters in POL applications |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean power for RF receivers and high-speed ADCs |
| Quiescent Current | 35µA typical; supports always-on automotive modules without excessive battery drain |
| Dropout Voltage | 0.22V max at 300mA (VOUT = 3.0V); allows operation down to 3.22V input in cold-crank scenarios |
| Enable Threshold | EN high ≥1.3V, low ≤0.5V; compatible with 1.8V/3.3V logic without level-shifting |
Pinout & Package
AP7343DQ-30FDZW-7 uses the W-DFN2020-6 (SWP) Type A1 package - a 2.0mm × 2.0mm, 0.65mm height wettable flank leadless package with exposed thermal pad (EP). This footprint enables high-density automotive PCB layouts while supporting automated optical inspection (AOI) and solder joint reliability verification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input power pin; requires low-impedance 0.47µF ceramic decoupling placed adjacent to pin |
| 2 & 5 | NC | No-connect terminals; recommended to tie to GND for enhanced thermal conduction and EMI reduction |
| 3 | GND | Power ground reference; must connect directly to solid ground plane beneath EP |
| 4 | VOUT | Regulated 3.0V output; connects to load with minimal trace length to preserve PSRR and transient response |
| 6 | EN | Active-high enable; drives regulator ON/OFF; must not float; internal pull-down ensures safe default-off state |
| EP | Exposed Pad | Thermal dissipation path; requires large copper area connected to GND plane (not used as functional GND node) |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified (-40°C to +125°C), PPAP-capable, manufactured in IATF 16949 facilities |
| Active Discharge | Internal NMOS discharges VOUT to GND within microseconds of EN deactivation, preventing back-powering |
| Low-Noise Regulation | 60µVrms noise floor enables direct powering of RF front-ends and precision analog sensors |
| High PSRR at Low Frequencies | 75dB rejection at 1kHz mitigates ripple from buck converter switching frequencies and their harmonics |
| Thermal Protection | Integrated thermal shutdown at +150°C with +20°C hysteresis prevents latch-up during sustained overload |
Applications
| Infotainment Power Supply | ADAS Camera Module |
|---|---|
Use Scenario: Local 3.0V rail for display timing controllers and audio codecs in head-unit systems. IC Role / Device Role / Timing Role: Primary post-regulator delivering ultra-low-noise 3.0V to noise-sensitive digital interfaces. Use Value: 60µVrms noise and 75dB PSRR prevent audible artifacts and display flicker caused by SMPS coupling. |
Use Scenario: Powering image signal processors (ISPs) and MIPI PHYs in surround-view cameras. IC Role / Device Role / Timing Role: Point-of-load regulator ensuring stable 3.0V supply during rapid illumination changes and vehicle vibration. Use Value: 300mA capability with <0.25V dropout sustains operation during 3.4V cold-crank transients without brownout. |
| Automotive RF Transceiver | Wireless Connectivity Module |
Use Scenario: Clean 3.0V supply for LTE/V2X transceivers operating in congested RF environments. IC Role / Device Role / Timing Role: Low-noise LDO isolating RF ICs from noisy main power domains. Use Value: 75dB PSRR at 1kHz suppresses baseband switching noise that would otherwise degrade receiver sensitivity. |
Use Scenario: Regulating power for Bluetooth/Wi-Fi SoCs in telematics control units (TCUs). IC Role / Device Role / Timing Role: Enable-controlled LDO enabling firmware-driven power sequencing and deep-sleep current optimization. Use Value: 35µA quiescent current and active discharge reduce standby power to <1µA system-level, extending battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-30FDZW-7 | No internal discharge path; VOUT floats after shutdown | Suitable where back-powering is acceptable or external discharge is implemented | Select when lowest BOM cost is prioritized and discharge is managed externally |
| TLD1120-33V | Higher 500mA rating, 40µVrms noise, but wider 2.5V–42V input range and no enable pin | Designed for direct-battery applications (e.g., body control modules), not 3.3V/5V POL | Choose only if input exceeds 5.25V or higher current is needed; not drop-in compatible |
Compared with AP7343Q-30FDZW-7, the DQ variant adds critical discharge functionality for safety-critical domains, while TLD1120-33V trades enable control and compact size for extreme input voltage tolerance-making AP7343DQ-30FDZW-7 optimal for regulated 3.0V automotive POL where fast rail collapse is mandatory.
Availability
AP7343DQ-30FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and wireless connectivity designs requiring stable component supply with full AEC-Q100 documentation and long-term lifecycle assurance.
Supply support for AP7343DQ-30FDZW-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 for automotive, industrial, computing, and consumer markets, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.
The AP7343DQ series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive point-of-load regulation in ADAS, infotainment, and telematics systems demanding high PSRR, low quiescent current, and robust thermal performance.
FAQ
What is the purpose of the NC pins on AP7343DQ-30FDZW-7?
The NC pins (2 and 5) are unconnected internally but serve critical layout functions: tying them to GND improves thermal conduction from the die through the package sidewalls and reduces high-frequency impedance paths, enhancing both thermal performance and EMI suppression in dense automotive PCBs.
Does AP7343DQ-30FDZW-7 require an external discharge resistor?
No. Unlike non-DQ variants, AP7343DQ-30FDZW-7 integrates an internal NMOS discharge switch between VOUT and GND, activated automatically when EN is pulled low. This eliminates need for external components while ensuring VOUT collapses to <100mV within 100µs, meeting ISO 16750-2 load-dump recovery requirements.
How does the W-DFN2020-6 (SWP) Type A1 package support automotive reliability?
This package features wettable flanks for automated optical inspection of solder joints, a 2.0mm × 2.0mm footprint minimizing board space, and an exposed thermal pad optimized for thermal transfer to internal ground planes-enabling junction temperatures to remain below 125°C even at 300mA in 70°C ambient, per JEDEC JESD51-7 testing.
Can AP7343DQ-30FDZW-7 operate with input voltage below 1.7V?
No. The absolute minimum input voltage is 1.7V per datasheet specifications. Below this threshold, regulation fails and output drops nonlinearly. For sub-1.7V applications (e.g., coin-cell backup), alternative LDOs such as AP2204K-3.0TRG1 with 0.8V VIN min must be selected-AP7343DQ-30FDZW-7 is not rated for operation outside its 1.7V–5.25V specified range.
AP7343DQ-30FDZW-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):
- 5.25V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- W-DFN2020-6 (Type A1)
AP7343DQ-30FDZW-7 FAQ
1.How can I place an order for AP7343DQ-30FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-30FDZW-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 AP7343DQ-30FDZW-7 reliable?
The price and inventory of AP7343DQ-30FDZW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343DQ-30FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-30FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-30FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-30FDZW-7?
AP7343DQ-30FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-30FDZW-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 AP7343DQ-30FDZW-7?
For technical support, including AP7343DQ-30FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-30FDZW-7 requirements.
6.How does Aetrix verify that AP7343DQ-30FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-30FDZW-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 AP7343DQ-30FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-30FDZW-7?
All AP7343DQ-30FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-30FDZW-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 AP7343DQ-30FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-30FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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