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Diodes Incorporated AP7343Q-12FDZW-7
- Part No.:
- AP7343Q-12FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-12FDZW-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-12FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 1.2V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features CMOS-based architecture, enable control, thermal shutdown, and short-circuit protection - deployed in ADAS camera power rails and RF supply chains where low noise and AEC-Q100 compliance are critical.
For engineers reviewing the AP7343Q-12FDZW-7 datasheet, AP7343Q-12FDZW-7 pinout, AP7343Q-12FDZW-7 application, or AP7343Q-12FDZW-7 equivalent, this page delivers verified technical context, package-specific pin mapping, automotive-grade reliability data, and real-world use-value for infotainment, ADAS, and wireless communication subsystems.
Technical Context
The AP7343Q-12FDZW-7 implements a CMOS-based LDO architecture with integrated voltage reference, error amplifier, current limit circuit, and thermal shutdown. Its enable input (EN) provides precise on/off control with defined logic thresholds (0.5V max low, 1.3V min high), and it lacks internal discharge functionality - distinguishing it from the AP7343DQ variant.
It operates across 1.7V–5.25V input range and delivers stable 1.2V output up to 300mA while maintaining ≤0.46V dropout (typ. 0.39V) at full load. Designed for automotive environments, it supports –40°C to +125°C ambient operation and meets AEC-Q100 Grade 1 requirements with PPAP capability and IATF 16949 manufacturing certification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% at +25°C; ensures precise biasing for 1.2V-core logic and analog sensors in automotive ECUs. |
| Max Output Current | 300mA guaranteed; sufficient for powering single-channel image signal processors or RF transceivers in ADAS cameras. |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters feeding noisy 3.3V/5V rails. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean power delivery to noise-sensitive RF front-ends and high-speed ADCs. |
| Quiescent Current | 35µA typical; minimizes standby power loss in always-on automotive modules like telematics and domain controllers. |
| Dropout Voltage | 0.39V typ. at 300mA (1.2V VOUT); allows operation from 1.7V input - compatible with partially discharged 12V battery systems via intermediate buck stage. |
| Operating Temp | –40°C to +125°C ambient; qualified per AEC-Q100 Grade 1 for under-hood and cabin-mounted electronics. |
Pinout & Package
AP7343Q-12FDZW-7 is packaged in W-DFN2020-6 (SWP) Type A1 - a 2.0mm × 2.0mm, 0.65mm pitch, wettable flank package with exposed thermal pad (EP). This footprint enables high-density PCB layout and superior thermal performance (θJA = 54°C/W) in space-constrained automotive modules.
| 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 minimize input impedance. |
| 2 (EN) | Enable Control | Active-high logic input; must be driven to ≥1.3V to enable regulation; floating state is prohibited - tie to VIN if unused. |
| 3 (GND) | Ground Reference | Primary ground return path; must connect directly to low-impedance PCB ground plane to ensure stability and noise immunity. |
| 4 (VOUT) | Regulated Output | Delivers fixed 1.2V ±1%; requires ≥1µF ceramic output capacitor near load to maintain transient response and stability. |
| 5, 6 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal dissipation via PCB copper area. |
| EP | Exposed Thermal Pad | Not electrically functional as GND; must be soldered to large copper pour connected to system ground for optimal thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities - suitable for safety-critical ADAS and infotainment systems. |
| Low Noise & High PSRR | 60µVrms output noise and 75dB ripple rejection at 1kHz enable direct powering of RF ICs and precision analog circuits without additional filtering. |
| Ultra-Low Quiescent Current | 35µA typical IQ supports extended battery runtime in always-on vehicle modules such as keyless entry receivers and CAN wake-up circuits. |
| Thermal & Short-Circuit Protection | Integrated thermal shutdown (150°C trigger, 20°C hysteresis) and foldback current limiting (~55mA short-circuit clamp) prevent damage during fault conditions. |
| Small Footprint Packaging | W-DFN2020-6 (SWP) Type A1 package reduces board area by >60% vs. SOT25 while improving thermal resistance by 3× (θJA = 54°C/W). |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
|
Use Scenario: Powering audio DSPs, touchscreen controllers, and display drivers in head-unit systems. IC Role / Device Role / Timing Role: Primary 1.2V core supply regulator delivering stable, low-noise voltage to SoC domains requiring tight voltage tolerance. Use Value: ±1% output accuracy and 75dB PSRR eliminate need for post-regulation LC filters, reducing BOM count and PCB area in cost-sensitive infotainment modules. |
Use Scenario: Supplying LNA, mixer, and PLL blocks in automotive LTE/V2X transceivers. IC Role / Device Role / Timing Role: Low-noise local regulator isolating RF signal chain from noisy main power rail. Use Value: 60µVrms broadband noise floor prevents reciprocal mixing and phase noise degradation in sub-6GHz RF front-ends. |
| Cameras | Automotive POL in ADAS |
|
Use Scenario: Providing 1.2V bias to CMOS image sensors and ISP cores in surround-view and driver-monitoring cameras. IC Role / Device Role / Timing Role: Point-of-load regulator placed adjacent to sensor die to minimize IR drop and EMI coupling. Use Value: Fast load-transient response (<100µs recovery from 1mA↔300mA step) maintains image integrity during dynamic exposure changes. |
Use Scenario: Generating 1.2V core voltage for radar SoCs and vision processors in forward collision warning and lane departure systems. IC Role / Device Role / Timing Role: Automotive-qualified LDO supporting functional safety requirements (ASIL-B capable when used in redundant power paths). Use Value: –40°C to +125°C operation and AEC-Q100 qualification ensure uninterrupted power delivery under extreme thermal cycling in engine bay or bumper-mounted radar units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-12W5-7 | SOT25 package (3.0mm × 2.9mm); higher θJA = 179°C/W; same electrical specs and automotive qualification. | Better suited for prototyping or low-volume designs where manual assembly or legacy footprint compatibility is required. | Select when thermal budget allows larger package or when leveraging existing SOT25 reflow profiles. |
| TLD1121-12ES | Infineon automotive LDO; 1.2V fixed, 300mA, but higher IQ (60µA typ.) and lower PSRR (65dB @ 1kHz); includes integrated watchdog timer. | Targeted at ASIL-B safety applications requiring diagnostic coverage - not drop-in electrically or thermally equivalent. | Choose only when functional safety diagnostics are mandatory and higher noise/PSRR trade-offs are acceptable. |
Compared with AP7343Q-12FDZW-7, the SOT25 variant offers identical regulation performance but sacrifices thermal efficiency and board density, while the TLD1121-12ES adds safety features at the cost of noise performance and power efficiency - making the FDZW version optimal for compact, noise-critical ADAS power nodes.
Availability
AP7343Q-12FDZW-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, AEC-Q100 traceability, and long-term production continuity.
Supply support for AP7343Q-12FDZW-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, computing, and consumer markets.
The AP7343Q belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive point-of-load regulation in ADAS, infotainment, and body electronics where AEC-Q100 compliance and ultra-low noise are mandatory.
FAQ
What is the maximum input voltage rating for AP7343Q-12FDZW-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V may cause permanent damage or violate AEC-Q100 stress limits, even if within absolute ratings. Operation above 5.25V voids automotive qualification guarantees.
Does AP7343Q-12FDZW-7 include an output discharge function?
No - AP7343Q-12FDZW-7 is the non-discharge variant. It lacks internal FET discharge circuitry between VOUT and GND during shutdown. For applications requiring rapid VOUT discharge (e.g., to meet reset timing), the AP7343DQ-12FDZW-7 variant must be selected instead.
Can AP7343Q-12FDZW-7 be used with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with ≥1µF ceramic capacitors, but using <1µF risks instability under load transients. The datasheet specifies 1µF as minimum for guaranteed stability across temperature and process variation; 2.2µF or 4.7µF is recommended for high-dynamic-load applications like camera ISPs.
How is thermal performance affected by the exposed pad (EP) connection?
Connecting the EP to a ≥100mm² copper pour tied to GND reduces θJA from 54°C/W to ~40°C/W in typical 4-layer boards. Leaving EP unconnected degrades thermal resistance by >25%, risking thermal shutdown at >200mA continuous load in enclosed automotive enclosures.
AP7343Q-12FDZW-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):
- 1.2V
- 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-12FDZW-7 FAQ
1.How can I place an order for AP7343Q-12FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-12FDZW-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-12FDZW-7 reliable?
The price and inventory of AP7343Q-12FDZW-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-12FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-12FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-12FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-12FDZW-7?
AP7343Q-12FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-12FDZW-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-12FDZW-7?
For technical support, including AP7343Q-12FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-12FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-12FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-12FDZW-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-12FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-12FDZW-7?
All AP7343Q-12FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-12FDZW-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-12FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-12FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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