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Diodes Incorporated AP7343Q-10FDZW-7
- Part No.:
- AP7343Q-10FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-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
AP7343Q-10FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 1.0V output, ±1% accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It features enable control, thermal shutdown, and short-circuit protection, and is qualified to AEC-Q100 Grade 1 for use in ADAS camera power rails and infotainment domain controllers.
For engineers reviewing the AP7343Q-10FDZW-7 datasheet, AP7343Q-10FDZW-7 pinout, AP7343Q-10FDZW-7 application, or AP7343Q-10FDZW-7 equivalent, this page delivers verified package mapping (W-DFN2020-6 Type A1), confirmed pin functions (VIN/EN/GND/VOUT/NC/EP), automotive thermal performance (−40°C to +125°C), and real-world transient response data for noise-sensitive POL designs.
Technical Context
The AP7343Q-10FDZW-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 logic thresholds (VIL ≤ 0.5V, VIH ≥ 1.3V), and it lacks built-in output discharge-requiring external circuitry if fast VOUT decay is needed.
It operates across 1.7V–5.25V input range and delivers stable 1.0V output up to 300mA with dropout as low as 0.46V at full load. Thermal protection activates at +150°C with +20°C hysteresis, and its W-DFN2020-6 (SWP) Type A1 package achieves θJA = 54°C/W and θJC = 17°C/W under JEDEC High-K board conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0V ±1% at +25°C; ensures stable core supply for 1.0V logic domains in automotive SoCs. |
| Max Output Current | 300mA guaranteed; supports dual-core microcontrollers or image signal processors in ADAS cameras. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC/DC converters in infotainment power trees. |
| Output Noise | 60µVrms (10Hz–100kHz); preserves SNR in RF receiver bias supplies and analog sensor interfaces. |
| Quiescent Current | 35µA typical; enables always-on functionality in vehicle wake-up circuits without battery drain. |
| Operating Temp | −40°C to +125°C ambient; validated for under-hood and cabin-mounted ECU deployments per AEC-Q100. |
| Dropout Voltage | 0.46V max at 300mA (1.0V output); allows operation from 1.46V input, supporting wide VIN battery monitoring paths. |
Pinout & Package
AP7343Q-10FDZW-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 input; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 (EN) | Enable Control | Active-high logic input; must be driven to ≥1.3V to enable regulation; floating state disables device. |
| 3 (GND) | Ground Reference | Primary return path for input/output current; connects directly to internal die substrate and EP thermal plane. |
| 4 (VOUT) | Regulated Output | Delivers fixed 1.0V ±1%; requires ≥1.0µF low-ESR ceramic capacitor at load for stability and transient response. |
| 5,6 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| EP | Exposed Pad | Thermal interface only-not electrically functional; must be soldered to large copper area tied to GND. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR | 75dB at 1kHz enables clean 1.0V supply in noisy automotive power domains with minimal filtering. |
| Low Noise Output | 60µVrms (10Hz–100kHz) maintains signal integrity for analog front-ends in radar and camera modules. |
| Ultra-Low IQ | 35µA quiescent current supports ISO 16750-compliant sleep-mode operation in always-on ECUs. |
| AEC-Q100 Qualified | Grade 1 qualification (−40°C to +125°C) confirms reliability for safety-critical ADAS power management. |
| Thermal Protection | +150°C shutdown with +20°C hysteresis prevents latch-up during sustained overload or poor heatsinking. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
|
Use Scenario: Powering audio DSP cores and display timing controllers in head-unit systems. IC Role / Device Role / Timing Role: Primary 1.0V POL regulator delivering low-noise, high-accuracy voltage for mixed-signal SoC domains. Use Value: 75dB PSRR rejects ripple from 2MHz buck converters, preventing audible artifacts in Class-D amplifiers. |
Use Scenario: Biasing low-noise amplifiers and mixer stages in V2X and cellular telematics modules. IC Role / Device Role / Timing Role: Ultra-low-noise post-regulator stabilizing RF IC supply rails downstream of switching regulators. Use Value: 60µVrms noise floor preserves receiver sensitivity and reduces bit error rate in LTE/C-V2X links. |
| ADAS Camera Module | Automotive Wireless Communications |
|
Use Scenario: Supplying image signal processors and CIS sensors in surround-view and driver-monitoring cameras. IC Role / Device Role / Timing Role: Compact 1.0V LDO mounted near sensor die to minimize IR drop and EMI coupling. Use Value: 300mA capability supports dual-lane MIPI CSI-2 transceivers while maintaining <±1% output accuracy over temperature. |
Use Scenario: Providing regulated 1.0V supply to Bluetooth Low Energy and Wi-Fi 6 companion chips in gateway ECUs. IC Role / Device Role / Timing Role: Enable-controlled standby regulator enabling rapid wake-from-sleep transitions. Use Value: 35µA quiescent current meets UNECE R155 power budget requirements for zero-emission vehicle connectivity nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-10W5-7 | SOT25 package (3.0mm × 2.9mm), higher θJA = 179°C/W, same electrical specs. | Less suitable for space-constrained ADAS modules; preferred for prototyping or legacy PCB footprints. | Select when board layout lacks space for DFN thermal pads or requires through-hole-compatible reflow profiles. |
| TLD1113-10ES | Infineon automotive LDO; 1.0V/300mA, ±2% accuracy, 65dB PSRR, no enable pin, integrated watchdog. | Lacks EN control; designed for fail-safe lighting drivers-not optimized for RF or imaging noise budgets. | Choose only when system-level watchdog supervision is required and PSRR >70dB is not critical. |
Compared with AP7343Q-10W5-7, the FDZW variant offers 3.3× lower thermal resistance for identical power dissipation; versus TLD1113-10ES, it trades watchdog functionality for superior noise/PSRR performance essential in signal-chain applications.
Availability
AP7343Q-10FDZW-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment domain controllers, and wireless telematics gateways requiring stable component supply, AEC-Q100 compliance, and high-reliability packaging.
Supply support for AP7343Q-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 company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets, with IATF 16949-certified manufacturing.
The AP7343Q belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive point-of-load regulation in ADAS, infotainment, and vehicle connectivity systems.
FAQ
What is the minimum input voltage required for AP7343Q-10FDZW-7 to regulate 1.0V output at 300mA?
The minimum input voltage is 1.46V, derived from the maximum dropout voltage of 0.46V at 300mA load (1.0V + 0.46V). Operation below this level results in pass transistor saturation and loss of regulation, as confirmed in the Electrical Characteristics table (Note 10).
Can the NC pins on AP7343Q-10FDZW-7 be left floating in PCB layout?
No-pins 5 and 6 are designated NC but must be connected to GND per the datasheet recommendation. This practice maximizes thermal dissipation through additional copper area and improves EMI shielding, especially critical in automotive RF environments.
Does AP7343Q-10FDZW-7 include output discharge functionality?
No. The "Q" suffix denotes non-discharge configuration. Unlike the "DQ" variant (e.g., AP7343DQ-10FDZW-7), this part lacks an internal discharge FET. External circuitry is required to actively pull down VOUT during shutdown if fast discharge is needed.
How does the exposed pad (EP) on AP7343Q-10FDZW-7 affect thermal performance?
The EP is thermally coupled to the die but electrically isolated. Soldering it to a ≥10mm² GND copper area with ≥4 thermal vias reduces θJA from 54°C/W to ≤40°C/W in production layouts, directly improving power handling and long-term reliability under continuous 300mA load.
AP7343Q-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:
- 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-10FDZW-7 FAQ
1.How can I place an order for AP7343Q-10FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-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 AP7343Q-10FDZW-7 reliable?
The price and inventory of AP7343Q-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 AP7343Q-10FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-10FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-10FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-10FDZW-7?
AP7343Q-10FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-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 AP7343Q-10FDZW-7?
For technical support, including AP7343Q-10FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-10FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-10FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-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 AP7343Q-10FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-10FDZW-7?
All AP7343Q-10FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-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 AP7343Q-10FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-10FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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