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Diodes Incorporated AP7343DQ-10W5-7
- Part No.:
- AP7343DQ-10W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343DQ-10W5-7.pdf
- Description:
- IC REG LINEAR 1V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,817
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Product details
Overview
AP7343DQ-10W5-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 1.0V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current - designed for noise-sensitive power domains in ADAS cameras and infotainment RF supplies.
For engineers reviewing the AP7343DQ-10W5-7 datasheet, AP7343DQ-10W5-7 pinout, AP7343DQ-10W5-7 application, or AP7343DQ-10W5-7 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, integrated auto-discharge function, SOT25 package thermal performance (θJA = 179°C/W), and guaranteed 300mA output across –40°C to +125°C ambient.
Technical Context
The AP7343DQ-10W5-7 employs a CMOS-based LDO architecture with internal voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its enable input (EN) provides precise on/off control with defined logic thresholds (VIL ≤ 0.5V, VIH ≥ 1.3V) and sub-1µA standby leakage.
Unlike the non-discharge AP7343Q variant, this DQ version integrates an N-channel auto-discharge transistor (RON ≈ 30Ω) that actively pulls VOUT to GND when EN is low, eliminating residual voltage hold-up in safety-critical automotive sequencing. Dropout voltage is 0.46V typical at 300mA for VOUT = 1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0V ±1% over –40°C to +125°C - ensures stable core supply for 1.0V logic rails in automotive microcontrollers. |
| Max Output Current | 300mA guaranteed - supports single-rail powering of image signal processors or RF transceivers without derating at 125°C ambient. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding camera sensor analog blocks. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets stringent SNR requirements for high-resolution automotive camera ADC front-ends. |
| Quiescent Current | 35µA typical - enables always-on functionality in vehicle entry systems while meeting ISO 16750-2 sleep current limits. |
| Dropout Voltage | 0.46V max at 300mA - allows operation from 1.46V minimum input, compatible with partially discharged 12V battery via pre-regulator. |
| Enable Thresholds | VIL ≤ 0.5V, VIH ≥ 1.3V - interfaces directly with 1.8V/3.3V MCU GPIO without level-shifting in domain controllers. |
Pinout & Package
AP7343DQ-10W5-7 is packaged in SOT25 (5-pin, 2.9mm × 2.8mm × 1.3mm), optimized for thermal dissipation in space-constrained automotive modules. The exposed pad is not electrically connected but must be soldered to PCB copper for thermal management.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input (1.7V–5.25V); requires local 0.47µF ceramic decoupling placed within 2mm of pin. |
| 2 | EN | Digital enable input; must be driven - floating state disables regulator; ties to VIN for always-on operation. |
| 3 | GND | Analog/digital ground return; connects to PCB ground plane with low-inductance path to minimize noise coupling. |
| 4 | VOUT | Regulated 1.0V output; requires 1µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 5 | NC | No-connect terminal; recommended to tie to GND for enhanced thermal conduction via PCB copper fill. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C), PPAP-capable, manufactured in IATF 16949 facilities - meets OEM Tier-1 functional safety requirements. |
| Auto-discharge function | Integrated 30Ω N-channel discharge FET activates on EN low - reduces VOUT decay time to <100µs, enabling fast reset sequencing in ADAS ECUs. |
| Low-noise regulation | 60µVrms noise floor with no external bypass capacitor required - eliminates need for costly noise-filtering components in RF supply chains. |
| High PSRR at low frequency | 75dB rejection at 1kHz - maintains clean 1.0V rail despite ripple from 500kHz–2MHz buck converters in multi-rail automotive power systems. |
| Thermal protection | 150°C junction shutdown with 20°C hysteresis - prevents latch-up during sustained overload in enclosed ECU housings. |
Applications
| Infotainment Power Supply | ADAS Camera Core Rail |
|---|---|
Use Scenario: Providing clean 1.0V supply to SoC cores and DDR I/O in head-unit infotainment systems. IC Role / Device Role / Timing Role: Primary post-regulator for noise-sensitive digital logic domains downstream of buck converters. Use Value: 75dB PSRR rejects switching artifacts from 2MHz PMICs, preventing bit errors in HDMI/MIPI video links. |
Use Scenario: Powering 1.0V image signal processor (ISP) cores in forward-facing ADAS cameras. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable bias for analog front-end and ADC reference circuits. Use Value: 60µVrms noise ensures >72dB SNR in 12-bit automotive image sensors under EMI-heavy engine bay conditions. |
| Automotive RF Transceiver Supply | Wireless V2X Module Bias |
Use Scenario: Generating ultra-low-noise 1.0V rail for LTE-V2X or 5G NR transceiver RF sections. IC Role / Device Role / Timing Role: Dedicated LDO for RF synthesizer and mixer bias, isolated from digital switching noise. Use Value: Sub-1% output accuracy maintains PLL loop stability across temperature, avoiding carrier frequency drift >±500Hz. |
Use Scenario: Supplying 1.0V logic and memory interface in DSRC/C-V2X roadside units operating at -40°C. IC Role / Device Role / Timing Role: Automotive-compliant LDO ensuring reliable boot and runtime operation in unheated outdoor enclosures. Use Value: Guaranteed 300mA output at –40°C enables full-feature operation without derating in cold-climate deployments. |
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 | No auto-discharge; identical electrical specs, package, and qualification. | Used where VOUT hold-up is acceptable (e.g., non-safety-critical infotainment subsystems). | Select when discharge timing is not required and BOM cost reduction is prioritized. |
| TLD1117LV10DCV50 | 1.0V fixed, 300mA, but higher 120µA IQ and 85dB PSRR at 100Hz only; no AEC-Q100 Grade 1 rating. | Limited to non-safety-critical body electronics due to qualification gap and higher noise (120µVrms). | Acceptable only for cost-sensitive non-automotive industrial designs with relaxed thermal/noise constraints. |
Compared with AP7343Q-10W5-7, the DQ version adds critical discharge capability for fail-safe reset behavior; versus TLD1117LV10DCV50, it delivers superior noise performance, lower IQ, and full automotive qualification - making it the only option for AEC-Q100-compliant 1.0V camera or RF rails.
Availability
AP7343DQ-10W5-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment RF subsystems, and wireless V2X communication devices requiring stable component supply with full AEC-Q100 traceability and PPAP support.
Supply support for AP7343DQ-10W5-7 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 ICs, with manufacturing certified to IATF 16949 and product lines focused on automotive, industrial, and computing markets.
The AP7343Q/DQ series belongs to Diodes' automotive LDO portfolio, engineered specifically for noise-sensitive power domains in ADAS, infotainment, and telematics - emphasizing PSRR, low noise, and AEC-Q100 reliability.
FAQ
What is the purpose of the NC pin on AP7343DQ-10W5-7?
The NC (No Connect) pin is internally unconnected but thermally coupled to the die. Diodes recommends tying it to GND on the PCB to maximize copper area for heat dissipation. This improves thermal resistance by up to 15% in SOT25 layouts, supporting continuous 300mA operation at elevated ambient temperatures.
How does the auto-discharge function operate in AP7343DQ-10W5-7?
When EN is pulled low, the integrated N-channel discharge FET (RON ≈ 30Ω) connects VOUT to GND, discharging external output capacitance. At 1µF COUT, VOUT falls from 1.0V to 0.1V in <100µs - enabling deterministic power-down sequencing required for ISO 26262 ASIL-B compliant camera modules.
Can AP7343DQ-10W5-7 be used with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with 0.47µF to 10µF X7R/X5R ceramics. Minimum 0.47µF is specified for stability; using <0.47µF risks oscillation under load transients. For 1.0V/300mA loads, 1µF is recommended to meet 20mV load regulation spec across 1–300mA steps.
What is the maximum allowable input voltage for AP7343DQ-10W5-7?
The absolute maximum input voltage is 6.0V, but recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks exceeding safe power dissipation limits in SOT25: at 6.0V input and 300mA output, power dissipation reaches 1.5W - exceeding the 698mW θJA-limited rating unless board-level thermal design is enhanced.
AP7343DQ-10W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 0.72V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7343DQ-10W5-7 FAQ
1.How can I place an order for AP7343DQ-10W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-10W5-7 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-10W5-7 reliable?
The price and inventory of AP7343DQ-10W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343DQ-10W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-10W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-10W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-10W5-7?
AP7343DQ-10W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-10W5-7 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-10W5-7?
For technical support, including AP7343DQ-10W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-10W5-7 requirements.
6.How does Aetrix verify that AP7343DQ-10W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-10W5-7 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-10W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-10W5-7?
All AP7343DQ-10W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-10W5-7, 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-10W5-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-10W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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