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Diodes Incorporated AP7343Q-28FDZW-7
- Part No.:
- AP7343Q-28FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-28FDZW-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-28FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 2.8V output, ±1% accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It operates from 1.7V to 5.25V input, supports -40°C to +125°C ambient, and features enable control for power sequencing in ADAS camera and RF supply rails.
For engineers reviewing the AP7343Q-28FDZW-7 datasheet, AP7343Q-28FDZW-7 pinout, AP7343Q-28FDZW-7 application, or AP7343Q-28FDZW-7 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, W-DFN2020-6 (SWP) Type A1 thermal performance (θJA = 54°C/W), low 35µA quiescent current, and absence of internal discharge circuitry.
Technical Context
The AP7343Q-28FDZW-7 uses a CMOS-based architecture with integrated voltage reference, error amplifier, and current-limit protection. Its enable input (EN) provides precise on/off control with defined logic thresholds (VIL ≤ 0.5V, VIH ≥ 1.3V) and sub-1µA leakage, enabling low-power sleep modes in automotive infotainment systems.
Thermal shutdown activates at +150°C with +20°C hysteresis, and short-circuit protection limits foldback current to 55mA. The device lacks auto-discharge functionality-confirmed by part number suffix "Q" (vs. "DQ") and datasheet note 11-making it suitable for applications where output voltage hold-up during disable is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±1% at +25°C; maintains regulation across -40°C to +125°C ambient. |
| Max Output Current | 300mA continuous; supports peak transient loads in camera sensor power domains. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC/DC converters in RF supply chains. |
| Output Noise | 60µVrms (10Hz–100kHz); meets low-noise requirements for analog front-ends in ADAS imaging. |
| Quiescent Current | 35µA typical; enables always-on subsystems without excessive battery drain. |
| Dropout Voltage | 0.26V max at 300mA (for VOUT = 2.8V); allows operation down to 3.06V input in 3.3V rail-derived systems. |
| Operating Temp | -40°C to +125°C ambient; qualified per AEC-Q100 Grade 1 for under-hood and cabin electronics. |
Pinout & Package
AP7343Q-28FDZW-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). This footprint enables high-density automotive PCB layouts while delivering θJA = 54°C/W and θJC = 17°C/W for efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Power Input | Accepts 1.7V–5.25V input; requires local 0.47µF ceramic decoupling placed adjacent to pin. |
| 2 (EN) | Enable Control | Active-high logic input; must be driven to ≥1.3V to enable, ≤0.5V to disable; floating prohibited. |
| 3 (GND) | Ground Reference | Primary return path for input/output currents; connects to PCB ground plane beneath EP for thermal conduction. |
| 4 (VOUT) | Regulated Output | Delivers stable 2.8V ±1%; requires 1µF ceramic capacitor placed within 2mm of pin per layout guidelines. |
| 5, 6 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal copper area on PCB. |
| EP | Exposed Pad | Thermal interface only-not electrically functional; must be soldered to large GND copper pour for θJA compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949 facilities-ensures reliability in safety-critical vehicle systems. |
| Low-Noise Regulation | 60µVrms output noise enables clean power for RF transceivers and image sensors without external filtering. |
| High PSRR Architecture | 75dB rejection at 1kHz reduces sensitivity to ripple from upstream buck converters in multi-rail automotive ECUs. |
| Wide Input Range | 1.7V–5.25V operation supports direct connection to 2.5V, 3.3V, or 5V system rails without pre-regulation. |
| Thermal Protection | +150°C junction shutdown with +20°C hysteresis prevents latch-up during sustained overload or poor heatsinking. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
Use Scenario: Powering audio DSPs and display controllers in head-unit systems with variable battery voltage and EMI constraints. IC Role / Device Role / Timing Role: Primary LDO for noise-sensitive analog and digital subsystems requiring stable 2.8V bias. Use Value: 75dB PSRR and 60µVrms noise prevent audible artifacts and display glitches during AM/FM reception or Bluetooth streaming. | Use Scenario: Supplying low-noise bias to LTE/V2X transceiver ICs operating near high-frequency switching circuits. IC Role / Device Role / Timing Role: Clean post-regulator for RF front-end ICs where supply ripple directly impacts EVM and receiver sensitivity. Use Value: High PSRR at 1kHz–100kHz suppresses coupling from nearby 2MHz–4MHz DC/DC converters, preserving signal integrity. |
| Cameras | Automotive POL in ADAS |
Use Scenario: Providing regulated 2.8V to CMOS image sensors and ISP processors in surround-view and driver-monitoring cameras. IC Role / Device Role / Timing Role: Point-of-load regulator delivering precise voltage to sensor analog blocks and timing-critical pixel readout circuits. Use Value: ±1% output accuracy ensures consistent ADC reference scaling and color fidelity across temperature extremes. | Use Scenario: Local regulation for radar processor cores and memory interfaces in 77GHz ADAS domain controllers. IC Role / Device Role / Timing Role: Secondary LDO supplying low-noise 2.8V to high-speed SerDes PHYs and cache SRAM banks. Use Value: 35µA quiescent current minimizes standby power in always-on radar wake-up paths without compromising transient response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-28W5-7 | SOT25 package (3.0mm × 1.7mm); higher θJA = 179°C/W; same electrical specs and no-discharge function. | Better suited for prototyping or space-tolerant designs where thermal budget allows larger footprint. | Select when board real estate permits SOT25 and thermal margin exceeds 50°C/W. |
| TLV73328PQDBVRQ1 | Texas Instruments AEC-Q100 LDO; 300mA, 2.8V, ±1% accuracy; 50µVrms noise; includes active discharge (DIS pin). | Requires external discharge control; slightly lower PSRR (70dB @ 1kHz) but tighter load regulation (±15mV). | Choose if system requires fast VOUT discharge on disable or TI ecosystem alignment is mandatory. |
Compared with AP7343Q-28W5-7, the FDZW variant offers 3.3× lower thermal resistance for compact ADAS modules; versus TLV73328PQDBVRQ1, it delivers superior PSRR and eliminates discharge-related BOM cost and layout complexity.
Availability
AP7343Q-28FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment power supplies, ADAS camera modules, RF transceiver biasing, and point-of-load regulation in safety-critical vehicle systems requiring stable component supply and full AEC-Q100 traceability.
Supply support for AP7343Q-28FDZW-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 for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing.
The AP7343Q series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive power domains in ADAS, infotainment, and telematics-emphasizing PSRR, thermal robustness, and AEC-Q100 compliance over general-purpose regulation.
FAQ
What is the maximum input voltage rating for AP7343Q-28FDZW-7?
The absolute maximum input voltage is 6.0V, but recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating recommended conditions and may accelerate parametric drift or reduce lifetime reliability in automotive environments.
Does AP7343Q-28FDZW-7 include an internal discharge transistor?
No. The "Q" suffix denotes the non-discharge version; AP7343DQ variants include discharge functionality. This part holds output voltage after disable, which is intentional for applications requiring controlled power-down sequencing or backup retention.
Can AP7343Q-28FDZW-7 be used with ceramic output capacitors smaller than 1µF?
Yes-the device is stable with very-small ceramic capacitors, but Diodes recommends ≥1µF for optimal transient response in automotive loads. Capacitors below 0.47µF may degrade load step recovery and increase output voltage deviation beyond ±2%.
What is the thermal pad (EP) connection requirement for W-DFN2020-6 (SWP) Type A1?
The exposed pad must be soldered to a dedicated GND copper pour on the PCB; it serves solely as a thermal path and must not be used as the primary GND electrical node. Minimum recommended copper area is 25mm² with ≥4 thermal vias to inner ground planes.
AP7343Q-28FDZW-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):
- 2.8V
- 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-28FDZW-7 FAQ
1.How can I place an order for AP7343Q-28FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-28FDZW-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-28FDZW-7 reliable?
The price and inventory of AP7343Q-28FDZW-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-28FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-28FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-28FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-28FDZW-7?
AP7343Q-28FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-28FDZW-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-28FDZW-7?
For technical support, including AP7343Q-28FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-28FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-28FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-28FDZW-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-28FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-28FDZW-7?
All AP7343Q-28FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-28FDZW-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-28FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-28FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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