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Diodes Incorporated AP7343DQ-10FDZW-7
- Part No.:
- AP7343DQ-10FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343DQ-10FDZW-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-10FDZW-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive-compliant 300mA low-dropout regulator with fixed 1.0V output, ±1% accuracy over -40°C to +125°C, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It features enable control, thermal shutdown, short-circuit protection, and operates from 1.7V to 5.25V input-designed for noise-sensitive automotive power rails including ADAS camera and RF supply domains.
For engineers reviewing the AP7343DQ-10FDZW-7 datasheet, AP7343DQ-10FDZW-7 pinout, AP7343DQ-10FDZW-7 application, or AP7343DQ-10FDZW-7 equivalent, key selection criteria include guaranteed 300mA load capability at 1.0V output, ultra-low 35µA quiescent current in active mode, 0.46V typical dropout at 300mA (1.0V version), and W-DFN2020-6 (SWP) Type A1 package with wettable flanks for automotive-grade solder joint inspection.
Technical Context
The AP7343DQ-10FDZW-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown logic. Its architecture supports fast line/load transient response with minimal external components-requiring only 1µF input and output ceramic capacitors for stability.
This variant includes an internal discharge FET (enabled when EN = low), actively pulling VOUT to GND during shutdown to prevent back-powering of downstream circuitry-a critical requirement in automotive domain controllers and camera modules where rail sequencing and leakage control are mandated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0V ±1% (TA = –40°C to +125°C); enables precise core biasing for 1.0V logic rails in automotive SoCs. |
| Max Output Current | 300mA guaranteed; supports dual-sensor camera modules or RF transceiver bias without derating at 125°C ambient. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC/DC converters in infotainment head units. |
| Output Noise | 60µVrms (10Hz–100kHz); meets stringent EMI requirements for automotive RF receivers and high-speed SerDes PHYs. |
| Quiescent Current | 35µA typical; extends battery runtime in always-on ADAS vision systems during vehicle sleep mode. |
| Dropout Voltage | 0.46V typ. at 300mA (1.0V VOUT); allows operation from 1.46V minimum VIN-compatible with degraded 12V battery conditions. |
| Enable Threshold | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V; interfaces directly with 1.8V/3.3V microcontroller GPIO without level-shifting. |
Pinout & Package
AP7343DQ-10FDZW-7 uses the W-DFN2020-6 (SWP) Type A1 package (2.0mm × 2.0mm × 0.65mm), featuring wettable flanks for automated optical solder-joint inspection per automotive IPC-A-610 standards. The exposed pad (EP) must be connected to PCB ground plane for optimal thermal dissipation (θJA = 54°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input (1.7V–5.25V); requires local 1µF ceramic decoupling placed within 2mm of pin. |
| 2 & 5 | NC | No-connect terminals; recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| 3 | GND | Analog/digital ground reference; must connect directly to solid ground plane under EP for <15mΩ impedance. |
| 4 | VOUT | Regulated 1.0V output; routed with short, wide trace to load to minimize IR drop and noise coupling. |
| 6 | EN | Active-high enable; drives into shutdown when pulled ≤0.5V; internal 1MΩ pull-down ensures safe default-off state. |
| EP | Exposed Pad | Thermal and electrical connection point; requires ≥80% copper fill on inner/outer layers, connected to GND. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for operation from –40°C to +125°C junction temperature; supports PPAP documentation for Tier-1 automotive programs. |
| Integrated discharge FET | 30Ω on-resistance (VIN = 4.0V, EN = 0V); discharges VOUT to <100mV within 100µs-prevents backfeed in multi-rail camera subsystems. |
| Low-noise CMOS architecture | 60µVrms noise floor with no external bypass capacitor required-reduces BOM count vs. bipolar LDOs needing noise-reduction caps. |
| High PSRR across frequency range | 75dB @ 1kHz, >55dB @ 100kHz; maintains clean 1.0V supply for RF synthesizers even with noisy 5V buck converter input. |
| Ultra-low quiescent current | 35µA active, 0.01µA standby; enables >10-year battery life in parking-mode vision sensors with periodic wake-up. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
|
Use Scenario: Powering audio DSP cores and display interface logic in head-unit ECUs. IC Role / Device Role / Timing Role: Primary 1.0V LDO delivering stable bias to low-voltage digital logic blocks. Use Value: 75dB PSRR prevents AM/FM receiver desensitization caused by switching noise from nearby 5V/3.3V DC/DC converters. |
Use Scenario: Supplying local oscillator and mixer stages in automotive LTE/V2X transceivers. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning up switched-mode supply ripple before RF signal paths. Use Value: 60µVrms noise ensures <–165dBc/Hz phase noise floor-critical for maintaining EVM compliance in 4G/5G modems. |
| Cameras | Automotive POL in ADAS |
|
Use Scenario: Biasing image sensor analog front-end (AFE) and ISP cores in surround-view cameras. IC Role / Device Role / Timing Role: Fixed 1.0V output LDO with fast load transient response for pixel readout bursts. Use Value: 300mA capability and <50µs recovery time support 60fps HDR capture without VOUT droop or frame corruption. |
Use Scenario: Point-of-load regulation for radar processor I/O banks in 77GHz ADAS domain controllers. IC Role / Device Role / Timing Role: Automotive-qualified POL delivering 1.0V to FPGA I/O banks with strict sequencing control. Use Value: Integrated EN and discharge FET enable precise power-up/down timing relative to main 1.2V core rail-meeting ISO 26262 ASIL-B sequencing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-10FDZW-7 | No internal discharge FET; VOUT floats during shutdown. | Suitable for non-sequenced loads where backfeed is not a concern (e.g., standalone MCU peripherals). | Select if discharge functionality is unnecessary and cost sensitivity outweighs functional safety margin. |
| TI TPS7A0510PDBVR | Lower IQ (25µA), but only 200mA rated; no AEC-Q100 qualification; 65dB PSRR at 1kHz. | Limited to non-automotive industrial or consumer applications requiring ultra-low IQ. | Choose only for cost-driven non-automotive designs where 300mA load and AEC-Q100 are not required. |
Compared with AP7343Q-10FDZW-7, the DQ variant adds critical discharge control for automotive rail sequencing, while TI's TPS7A0510 lacks both automotive qualification and full 300mA capability-making AP7343DQ-10FDZW-7 the sole option meeting AEC-Q100 Grade 1, 300mA, and active discharge in this footprint.
Availability
AP7343DQ-10FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and vehicle-to-everything (V2X) RF subsystems requiring stable component supply with full AEC-Q100 traceability and PPAP support.
Supply support for AP7343DQ-10FDZW-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 solutions, with design centers in Asia, Europe, and the U.S., and manufacturing certified to IATF 16949.
The AP7343Q series was developed specifically for automotive power management, targeting noise-sensitive, high-reliability applications such as ADAS, infotainment, and body electronics requiring AEC-Q100 qualification and robust thermal performance.
FAQ
What is the maximum allowable input voltage for AP7343DQ-10FDZW-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V may trigger internal overvoltage protection or degrade long-term reliability, especially at high junction temperatures. Operation above 5.25V is not characterized or guaranteed per the datasheet.
Does AP7343DQ-10FDZW-7 require an external pull-up resistor on the EN pin?
No external pull-up is required-the device includes an internal 1MΩ pull-down on EN, ensuring default shutdown at power-up. If always-on operation is needed, connect EN directly to VIN; for controlled enable, drive EN with a GPIO capable of ≥1.3V high and ≤0.5V low thresholds.
How does the discharge FET function during shutdown?
When EN is pulled low, the internal N-channel FET turns on, connecting VOUT to GND through a typical 30Ω path. This discharges output capacitance to <100mV within 100µs (COUT = 1µF), preventing back-powering of upstream regulators or unintended wake-up of downstream ICs in automotive domain controllers.
Can AP7343DQ-10FDZW-7 be used with ceramic output capacitors smaller than 1µF?
The device is characterized for stability with ≥1µF X5R/X7R ceramic capacitors. Using <1µF risks instability-observed as ringing or oscillation under load transients-due to insufficient phase margin. Diodes Incorporated does not guarantee stability below 1µF, even with low-ESR types.
AP7343DQ-10FDZW-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):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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-10FDZW-7 FAQ
1.How can I place an order for AP7343DQ-10FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-10FDZW-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-10FDZW-7 reliable?
The price and inventory of AP7343DQ-10FDZW-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-10FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-10FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-10FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-10FDZW-7?
AP7343DQ-10FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-10FDZW-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-10FDZW-7?
For technical support, including AP7343DQ-10FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-10FDZW-7 requirements.
6.How does Aetrix verify that AP7343DQ-10FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-10FDZW-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-10FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-10FDZW-7?
All AP7343DQ-10FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-10FDZW-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-10FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-10FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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