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Diodes Incorporated AP7343Q-30FDZW-7
- Part No.:
- AP7343Q-30FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-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
AP7343Q-30FDZW-7 from Diodes Incorporated is an AEC-Q100 Grade 1 qualified automotive LDO regulator delivering fixed 3.0V output at up to 300mA, with ±1% output accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current - designed for noise-sensitive RF and camera power rails in ADAS and infotainment systems.
For engineers reviewing the AP7343Q-30FDZW-7 datasheet, AP7343Q-30FDZW-7 pinout, AP7343Q-30FDZW-7 application, or AP7343Q-30FDZW-7 equivalent, key selection criteria include its W-DFN2020-6 (SWP) Type A1 package thermal performance (θJA = 54°C/W), enable-controlled shutdown (ISTANDBY = 0.01µA), and guaranteed dropout voltage of 0.22V at 300mA for 3.0V output.
Technical Context
The AP7343Q-30FDZW-7 implements a CMOS-based low-dropout architecture with integrated voltage reference, error amplifier, and current-limit protection. It operates across 1.7V–5.25V input range and maintains regulation down to −40°C to +125°C ambient, meeting automotive-grade thermal and reliability requirements.
Its EN pin enables precise system-level power sequencing, while internal short-circuit foldback (55mA typical) and thermal shutdown (+150°C threshold, +20°C hysteresis) provide robust fault protection without external components. No discharge function distinguishes this variant from AP7343DQ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% at +25°C; ensures stable core logic supply for automotive microcontrollers and sensors. |
| Max Output Current | 300mA guaranteed; supports dual-camera modules or RF transceivers without derating at +125°C ambient. |
| PSRR | 75dB at 1kHz; suppresses switching noise from DC/DC converters feeding adjacent high-frequency circuits. |
| Output Noise | 60µVrms (10Hz–100kHz); preserves SNR in analog front-ends of radar receivers and audio codecs. |
| Quiescent Current | 35µA typical; enables always-on functionality in vehicle telematics with minimal battery drain. |
| Dropout Voltage | 0.22V max at 300mA (3.0V output); allows operation from partially discharged 3.6V LiFePO4 battery packs. |
| Enable Threshold | VEN(HI) ≥ 1.3V; compatible with 1.8V/3.3V GPIOs for direct MCU control without level-shifting. |
Pinout & Package
AP7343Q-30FDZW-7 uses the W-DFN2020-6 (SWP) Type A1 package (2.0mm × 2.0mm × 0.65mm), featuring wettable flanks for automated optical inspection and an exposed thermal pad (EP) requiring PCB copper connection to GND for optimal θJA = 54°C/W performance.
| 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 & 5 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal conduction via PCB copper. |
| 3 (GND) | Ground Reference | Primary return path for load current; must connect directly to low-impedance ground plane under EP. |
| 4 (VOUT) | Regulated Output | Delivers 3.0V ±1%; requires ≥1µF ceramic output capacitor placed within 2mm of pin for stability. |
| 6 (EN) | Enable Control | Active-high logic input; drives regulator ON when ≥1.3V, OFF when ≤0.5V; must not float. |
| EP | Exposed Thermal Pad | Not electrically functional as GND; soldered to large copper area tied to system GND for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation in safety-critical automotive domains including ADAS and body control. |
| Ultra-low output noise | 60µVrms over 10Hz–100kHz bandwidth enables clean power for RF ICs and high-resolution ADCs. |
| High PSRR at low frequency | 75dB rejection at 1kHz mitigates ripple from upstream buck converters operating at 500kHz–2MHz. |
| Low-quiescent-current shutdown | 0.01µA standby current extends battery life in always-on vehicle monitoring systems. |
| Thermal shutdown with hysteresis | +150°C trip point with +20°C hysteresis prevents oscillation during sustained overload conditions. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
Use Scenario: Powering SoC I/O banks and display interface circuitry in head-unit systems. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean 3.0V to HDMI PHY and LVDS serializer blocks. Use Value: 75dB PSRR suppresses switching noise from 12V-to-3.3V buck converter, preventing pixel jitter and video artifacts. |
Use Scenario: Biasing VCOs, LNAs, and mixers in cellular/V2X communication modules. IC Role / Device Role / Timing Role: Low-noise local regulator for RF signal chain components requiring sub-100µVrms supply noise. Use Value: 60µVrms output noise preserves EVM and ACLR performance in LTE/5G front-ends. |
| Camera Module Power | ADAS Point-of-Load (POL) |
Use Scenario: Supplying image sensor analog cores and ISP voltage references in surround-view cameras. IC Role / Device Role / Timing Role: Fixed 3.0V LDO providing isolated, low-noise rail for CIS analog front-end and PLL clock generation. Use Value: ±1% output accuracy ensures consistent ADC reference scaling across temperature, maintaining color fidelity. |
Use Scenario: Local regulation for radar processor I/O and memory interfaces in forward collision warning systems. IC Role / Device Role / Timing Role: Automotive-grade POL delivering 3.0V to FPGA configuration banks and SerDes lanes. Use Value: 300mA capability with 0.22V dropout enables reliable operation from 3.6V battery during cold-crank events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-30FDUW-7 | Same electrical specs; uses W-DFN2020-6 (SWP) Type UXD package with different pin 2/5 NC layout and θJA = 53.3°C/W. | Identical functional use; UXD variant offers marginally better thermal resistance but requires updated footprint. | Select for new designs prioritizing lowest possible junction temperature under 300mA continuous load. |
| TLD1123-30QV | 300mA automotive LDO with 3.0V output, but higher 90µVrms noise and 65dB PSRR at 1kHz; no EN pin. | Lacks enable control and delivers lower PSRR/noise performance; suitable only where sequencing is handled externally. | Choose only if board space constraints prohibit EN routing and noise sensitivity is secondary to cost. |
Compared with AP7343Q-30FDZW-7, the FDZW variant provides optimal thermal performance for dense ADAS PCB layouts, while the FDUW offers marginal improvement at the cost of footprint redesign; TLD1123-30QV trades noise/PSRR and controllability for simplified integration in non-critical rails.
Availability
AP7343Q-30FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, RF communications, and telematics systems requiring stable component supply with full AEC-Q100 compliance and PPAP documentation support.
Supply support for AP7343Q-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, with ISO/TS 16949-certified manufacturing and broad automotive qualification coverage.
The AP7343Q belongs to Diodes' automotive-grade LDO portfolio, engineered specifically for noise-sensitive, high-reliability power management in ADAS, infotainment, and vehicle networking applications.
FAQ
What is the maximum input voltage rating for AP7343Q-30FDZW-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 overvoltage protection or degrade long-term reliability, especially under high-temperature conditions. Operation above 5.25V is not supported per datasheet specifications.
Does AP7343Q-30FDZW-7 include output discharge functionality?
No, AP7343Q-30FDZW-7 is the non-discharge variant. It lacks an internal pull-down transistor on the VOUT pin during shutdown. If rapid output discharge is required (e.g., for power sequencing), the AP7343DQ-30FDZW-7 should be selected instead.
Can AP7343Q-30FDZW-7 operate with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with ceramic capacitors as low as 0.47µF, provided ESR remains below 10mΩ. However, 1µF is recommended to ensure robust transient response across temperature and load variations, particularly in automotive environments with wide thermal swings.
How is thermal performance affected if the exposed pad (EP) is left unconnected?
Leaving the EP unconnected increases θJA from 54°C/W to >100°C/W, severely limiting usable output current at elevated ambient temperatures. For reliable 300mA operation at +125°C ambient, the EP must be soldered to a minimum 25mm² GND-connected copper area per the datasheet layout guidelines.
AP7343Q-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)
AP7343Q-30FDZW-7 FAQ
1.How can I place an order for AP7343Q-30FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-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 AP7343Q-30FDZW-7 reliable?
The price and inventory of AP7343Q-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 AP7343Q-30FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-30FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-30FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-30FDZW-7?
AP7343Q-30FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-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 AP7343Q-30FDZW-7?
For technical support, including AP7343Q-30FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-30FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-30FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-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 AP7343Q-30FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-30FDZW-7?
All AP7343Q-30FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-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 AP7343Q-30FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-30FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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