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Diodes Incorporated AP7343Q-09FDZW-7
- Part No.:
- AP7343Q-09FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-09FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7343Q-09FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 0.9V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, thermal shutdown, and short-circuit protection, and is designed for noise-sensitive power rails in ADAS camera modules and RF subsystems.
For engineers reviewing the AP7343Q-09FDZW-7 datasheet, AP7343Q-09FDZW-7 pinout, AP7343Q-09FDZW-7 application, or AP7343Q-09FDZW-7 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, W-DFN2020-6 (SWP) Type A1 package, 0.9V fixed output, low-noise performance under 300mA load, and enable-driven power sequencing in automotive infotainment and wireless comms systems.
Technical Context
The AP7343Q-09FDZW-7 uses a CMOS-based LDO architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its enable input provides precise on/off control with defined VIH/VIL thresholds (1.3V/0.5V), and it lacks built-in output discharge (non-DQ variant).
It operates across 1.7V–5.25V input range and delivers stable 0.9V output up to 300mA while maintaining <0.82V dropout at full load. Thermal shutdown activates at +150°C with +20°C hysteresis, and short-circuit current is limited to ~55mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.9V ±1% at +25°C; ensures precise core voltage for low-voltage SoCs and sensors. |
| Max Output Current | 300mA guaranteed; supports high-transient loads in automotive camera ISPs and RF front-ends. |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters in mixed-signal domains. |
| Output Noise | 60µVrms (10Hz–100kHz); minimizes phase noise in VCOs and jitter in high-speed serial links. |
| Quiescent Current | 35µA typical; enables ultra-low-power sleep modes in always-on automotive subsystems. |
| Dropout Voltage | 0.51V max at 300mA (VOUT = 0.9V); allows operation from partially discharged 3.3V or 2.5V rails. |
| Operating Temp | −40°C to +125°C junction; meets automotive under-hood and cabin ambient requirements. |
Pinout & Package
AP7343Q-09FDZW-7 is packaged in W-DFN2020-6 (SWP) Type A1 - a 2.0mm × 2.0mm, 0.65mm height, wettable flank package with exposed thermal pad (EP). The EP must be connected to PCB ground plane via multiple vias for optimal thermal dissipation (θJA = 54°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Power Input | Accepts 1.7V–5.25V supply; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 (EN) | Enable Control | Active-high logic input; VIH ≥1.3V enables regulation, VIL ≤0.5V forces shutdown; must not float. |
| 3 (GND) | Ground Reference | Primary return path for input/output current; connects directly to internal ground plane and EP. |
| 4 (VOUT) | Regulated Output | Delivers stable 0.9V; requires ≥1µF ceramic output capacitor placed near pin and load. |
| 5, 6 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| EP | Exposed Thermal Pad | Not electrically functional as GND; must be soldered to large copper area tied to system ground for thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for −40°C to +125°C operation with PPAP support; suitable for safety-critical ADAS power rails. |
| Ultra-Low Output Noise | 60µVrms over 10Hz–100kHz bandwidth; preserves signal integrity in RF receivers and high-resolution ADCs. |
| High PSRR at Low Frequencies | 75dB rejection at 1kHz; mitigates ripple from buck converter switching frequencies and their harmonics. |
| Low Quiescent Current | 35µA typical; extends battery runtime in always-on vehicle telematics and sensor nodes. |
| Thermal & Short-Circuit Protection | Auto-shutdown at +150°C (20°C hysteresis) and foldback current limit (~55mA); prevents field failure under fault conditions. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
|
Use Scenario: Powering audio DSPs and display controllers in head-unit systems with stringent ripple and noise limits. IC Role / Device Role / Timing Role: Primary 0.9V core LDO supplying low-noise bias to mixed-signal SoCs and DDR I/O buffers. Use Value: 75dB PSRR and 60µVrms noise prevent audible artifacts and timing jitter in digital audio paths. |
Use Scenario: Biasing VCOs, LNAs, and mixer stages in cellular/V2X transceivers mounted near engine compartments. IC Role / Device Role / Timing Role: Clean 0.9V rail generator isolating sensitive RF analog blocks from noisy digital domains. Use Value: Stable 300mA delivery with <0.82V dropout enables operation from degraded 3.3V supplies during cold-crank events. |
| Cameras | Automotive POL in ADAS |
|
Use Scenario: Supplying image signal processors (ISPs) and CIS analog front-ends in surround-view and driver-monitoring cameras. IC Role / Device Role / Timing Role: Fixed-output LDO delivering precision 0.9V to ISP cores requiring tight voltage tolerance and fast load transient response. Use Value: ±1% output accuracy and sub-100µs load transient recovery maintain pixel clock stability and reduce image artifacts. |
Use Scenario: Point-of-load regulation for radar SoCs and AI accelerators in forward collision warning and lane-keeping ECUs. IC Role / Device Role / Timing Role: Compact, thermally robust 0.9V regulator enabling dense PCB layouts in space-constrained ADAS domain controllers. Use Value: W-DFN2020-6 (SWP) Type A1 package with 54°C/W θJA supports continuous 300mA operation without external heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-09W5-7 | SOT25 package (3.0mm × 2.9mm); higher θJA (179°C/W); no wettable flanks. | Less suitable for high-density automotive PCBs; lower thermal performance in sealed enclosures. | Select when legacy SOT25 footprint compatibility is required and thermal margin >30°C exists. |
| TLD1120FV | Infineon AEC-Q100 Grade 1 300mA LDO; 0.9V output; 65dB PSRR @1kHz; 45µVrms noise; SO-8 package. | Larger footprint and higher EMI susceptibility due to leaded SO-8; better ESD rating (4kV HBM). | Prefer when board-level ESD robustness is prioritized over size/noise, or when SO-8 rework infrastructure exists. |
Compared with AP7343Q-09FDZW-7, the SOT25 variant trades thermal efficiency for legacy compatibility, while the TLD1120FV offers stronger ESD immunity but sacrifices noise performance and board area - making the FDZW version optimal for space-constrained, noise-critical ADAS camera and RF POL designs.
Availability
AP7343Q-09FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment power supplies, ADAS camera modules, and RF subsystems requiring stable component supply with AEC-Q100 compliance and traceable sourcing.
Supply support for AP7343Q-09FDZW-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 ISO/TS 16949-certified automotive production facilities and broad AEC-Q100 qualified portfolios.
The AP7343Q series belongs to Diodes' automotive-qualified LDO family, engineered specifically for noise-sensitive point-of-load regulation in ADAS, infotainment, and telematics systems operating across extended temperature ranges.
FAQ
What is the maximum input voltage for AP7343Q-09FDZW-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits and may trigger thermal shutdown or degrade long-term reliability, especially at high ambient temperatures.
Does AP7343Q-09FDZW-7 include output discharge functionality?
No - the "Q" suffix (vs. "DQ") indicates this is the non-discharge variant. When disabled via EN, the output remains floating and does not actively pull VOUT to GND. External discharge circuitry is required if rapid output decay is needed for system-level sequencing.
Can AP7343Q-09FDZW-7 operate with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with ≥0.47µF ceramic capacitors, but 1µF is recommended for optimal transient response and PSRR performance. Capacitors below 0.47µF may cause instability or excessive overshoot during load steps, particularly above 100mA.
How is thermal performance affected by the exposed pad (EP) connection in W-DFN2020-6 (SWP)?
Connecting the EP to a ≥25mm² GND copper area with ≥4 thermal vias reduces θJA from 54°C/W to ≤40°C/W. Leaving the EP unconnected or floating increases junction temperature by >35°C at 300mA, risking thermal shutdown in enclosed automotive environments.
AP7343Q-09FDZW-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):
- 0.9V
- 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)
AP7343Q-09FDZW-7 FAQ
1.How can I place an order for AP7343Q-09FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-09FDZW-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 AP7343Q-09FDZW-7 reliable?
The price and inventory of AP7343Q-09FDZW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343Q-09FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-09FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-09FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-09FDZW-7?
AP7343Q-09FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-09FDZW-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 AP7343Q-09FDZW-7?
For technical support, including AP7343Q-09FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-09FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-09FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-09FDZW-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 AP7343Q-09FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-09FDZW-7?
All AP7343Q-09FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-09FDZW-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 AP7343Q-09FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-09FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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