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Diodes Incorporated AP7343DQ-15FDZW-7
- Part No.:
- AP7343DQ-15FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343DQ-15FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7343DQ-15FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 1.5V 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 used in ADAS camera power rails and infotainment domain controllers where low-noise, high-PSRR POL regulation is required.
For engineers reviewing the AP7343DQ-15FDZW-7 datasheet, AP7343DQ-15FDZW-7 pinout, AP7343DQ-15FDZW-7 application, or AP7343DQ-15FDZW-7 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, W-DFN2020-6 (SWP) Type A1 package thermal performance (θJA = 54°C/W), discharge functionality, and 1.7V–5.25V input range compatibility with 12V automotive systems.
Technical Context
The AP7343DQ-15FDZW-7 integrates a CMOS-based LDO core with voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its enable input supports active-high logic control with defined thresholds (VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V), and its built-in discharge path actively pulls VOUT to GND during shutdown - a critical feature for sequencing-sensitive automotive subsystems.
This variant delivers 1.5V output with guaranteed 300mA load capability across –40°C to +125°C ambient, achieving dropout as low as 0.39V at 300mA (for 1.2V < VOUT ≤ 1.4V), and maintains 75dB ripple rejection at 1kHz under 30mA load - enabling clean power delivery to RF receivers and image sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% at +25°C; ensures stable bias for 1.5V logic and analog circuits without external feedback. |
| Max Output Current | 300mA continuous; sufficient for powering multiple camera sensor modules or MCU I/O banks in ADAS ECUs. |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters feeding infotainment SoCs. |
| Output Noise | 60µVrms (10Hz–100kHz); minimizes jitter in clock buffers and SNR degradation in ADC front-ends. |
| Quiescent Current | 35µA typical; enables ultra-low-power sleep mode operation in always-on vehicle networks. |
| Input Voltage Range | 1.7V to 5.25V; compatible with post-regulated 3.3V/5V domains and direct connection to buck converter outputs. |
| Dropout Voltage | 0.39V max at 300mA (1.2V < VOUT ≤ 1.4V); allows operation from 1.89V input while maintaining 1.5V output under full load. |
Pinout & Package
AP7343DQ-15FDZW-7 is packaged in W-DFN2020-6 (SWP) Type A1 - a 2.0mm × 2.0mm, 0.65mm pitch, wettable flank package with exposed pad (EP) for enhanced thermal dissipation. The EP must be connected to PCB ground plane via multiple vias to achieve θJA = 54°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Accepts 1.7–5.25V supply; requires local 0.47µF ceramic decoupling capacitor placed within 2mm of pin. |
| EN (Pin 2) | Enable Control | Active-high logic input; must be driven to ≥1.3V to enable, ≤0.5V to disable; floating prohibited. |
| GND (Pin 3) | Ground Reference | Primary return path for input/output currents; connects directly to internal die substrate and EP thermal pad. |
| VOUT (Pin 4) | Regulated Output | Delivers 1.5V ±1%; requires 1µF ceramic output capacitor placed adjacent to pin for stability and transient response. |
| NC (Pin 5) | No Connect | Internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding. |
| NC (Pin 6) | No Connect | Internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding. |
| EP | Exposed Thermal Pad | Not electrically functional; must be soldered to large GND copper area with ≥4 thermal vias for thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for operation from –40°C to +125°C ambient; supports PPAP documentation and IATF 16949 manufacturing traceability. |
| Integrated Discharge Function | Active pull-down of VOUT during shutdown (RON ≈ 30Ω); eliminates hold-up time and prevents back-powering of downstream circuitry. |
| Low-Noise, High-PSRR Architecture | 60µVrms noise + 75dB PSRR at 1kHz enables use in RF receiver LNA bias and high-resolution imaging sensor supplies. |
| Ultra-Low Quiescent Current | 35µA typical IQ; reduces standby power loss in always-on telematics gateways and body control modules. |
| Thermal Shutdown with Hysteresis | Triggers at +150°C with +20°C hysteresis; protects against sustained overload in compact automotive enclosures without airflow. |
Applications
| ADAS Camera Power Supply | Infotainment Domain Controller |
|---|---|
|
Use Scenario: Powers CIS image sensor and ISP core in forward-facing ADAS camera module operating in engine bay environment. IC Role / Device Role / Timing Role: Primary 1.5V POL regulator delivering clean, sequenced power with fast load transient response (<100µs recovery). Use Value: 60µVrms noise prevents pixel pattern noise; discharge function ensures safe power-down during CAN wake-up events. |
Use Scenario: Supplies 1.5V rail to DDR I/O interface and PCIe SerDes PHY in centralized infotainment head unit. IC Role / Device Role / Timing Role: Low-noise auxiliary LDO supporting high-speed digital interfaces requiring tight voltage tolerance and low jitter. Use Value: ±1% output accuracy maintains signal integrity margins; 75dB PSRR isolates SerDes clocks from SMPS ripple. |
| Automotive Wireless Communication Module | Automotive RF Front-End |
|
Use Scenario: Provides regulated 1.5V supply to Bluetooth/Wi-Fi SoC in telematics control unit with strict EMI requirements. IC Role / Device Role / Timing Role: Noise-suppressing post-regulator for wireless baseband ICs sensitive to supply-induced phase noise. Use Value: 1.7–5.25V input range accommodates varying battery-sourced pre-regulation; 35µA IQ extends battery backup duration. |
Use Scenario: Powers LNA and mixer bias in automotive radar transceiver MMICs operating near 77GHz. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply rail ensuring minimal AM-to-PM conversion and phase noise degradation. Use Value: 60µVrms noise directly improves radar receiver NF; thermal shutdown prevents damage during antenna fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-15FDZW-7 | No discharge function; EN-controlled shutdown leaves VOUT floating. | Suitable for non-sequencing applications where hold-up is acceptable. | Select when discharge is unnecessary and cost optimization is prioritized. |
| TLD1114-15ES | Higher IQ (120µA), lower PSRR (65dB @ 1kHz), same AEC-Q100 Grade 1 rating. | Targeted at general-purpose automotive loads; less suitable for RF/analog noise-sensitive circuits. | Choose if board space allows larger package (SOT-23-5) and noise performance is secondary to BOM simplification. |
Compared with AP7343Q-15FDZW-7, the DQ variant adds critical discharge capability for system-level power sequencing, while TLD1114-15ES trades noise/PSRR performance for broader availability and simpler layout - making AP7343DQ-15FDZW-7 optimal for high-fidelity ADAS and RF power domains.
Availability
AP7343DQ-15FDZW-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment domain controllers, and wireless telematics units requiring stable component supply, AEC-Q100 compliance, and production-ready traceability.
Supply support for AP7343DQ-15FDZW-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 devices for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing.
The AP7343Q/DQ series targets automotive power management applications demanding high reliability, low noise, and precise voltage regulation - especially in ADAS, infotainment, and connectivity subsystems.
FAQ
What is the purpose of the NC pins on AP7343DQ-15FDZW-7?
The two NC pins (Pins 5 and 6) are not connected internally. Diodes Incorporated recommends tying them to GND to maximize PCB copper area for thermal dissipation and improve EMI shielding. Leaving them floating may degrade thermal performance and increase susceptibility to noise coupling.
Does AP7343DQ-15FDZW-7 require an external discharge resistor?
No. Unlike standard LDOs, AP7343DQ-15FDZW-7 integrates an internal N-channel MOSFET discharge path (RON ≈ 30Ω) that actively pulls VOUT to GND when EN is low. This eliminates the need for external components and ensures controlled, rapid discharge during power-down sequences.
How does the W-DFN2020-6 (SWP) Type A1 package affect thermal design?
The W-DFN2020-6 (SWP) Type A1 package achieves θJA = 54°C/W only when the exposed pad (EP) is soldered to a minimum 10mm² GND copper area with ≥4 thermal vias to inner ground planes. Without this, junction temperature rise exceeds specification limits under 300mA load at +125°C ambient.
Can AP7343DQ-15FDZW-7 operate with input voltage below 1.7V?
No. The absolute minimum input voltage is 1.7V per Recommended Operating Conditions. Operation below this threshold risks regulation loss, increased dropout, and potential instability. For sub-1.7V applications, consider Diodes' AP2204K or AP7361D series with lower VIN minima.
AP7343DQ-15FDZW-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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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)
AP7343DQ-15FDZW-7 FAQ
1.How can I place an order for AP7343DQ-15FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-15FDZW-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 AP7343DQ-15FDZW-7 reliable?
The price and inventory of AP7343DQ-15FDZW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343DQ-15FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-15FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-15FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-15FDZW-7?
AP7343DQ-15FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-15FDZW-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 AP7343DQ-15FDZW-7?
For technical support, including AP7343DQ-15FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-15FDZW-7 requirements.
6.How does Aetrix verify that AP7343DQ-15FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-15FDZW-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 AP7343DQ-15FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-15FDZW-7?
All AP7343DQ-15FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-15FDZW-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 AP7343DQ-15FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-15FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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