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Diodes Incorporated AP7343Q-15W5-7
- Part No.:
- AP7343Q-15W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343Q-15W5-7.pdf
- Description:
- IC REG LINEAR 1.5V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
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Product details
Overview
AP7343Q-15W5-7 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 - designed for noise-sensitive power domains in ADAS camera modules and infotainment RF supplies.
For engineers reviewing the AP7343Q-15W5-7 datasheet, AP7343Q-15W5-7 pinout, AP7343Q-15W5-7 application, or AP7343Q-15W5-7 equivalent, this page delivers verified package mapping (SOT25), terminal-level design meaning, AEC-Q100 Grade 1 qualification status, thermal shutdown threshold (+150°C), and validated automotive use cases including camera sensor biasing and RF transceiver POL.
Technical Context
The AP7343Q-15W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and enable control logic - delivering stable 1.5V regulation across -40°C to +125°C ambient with <±30ppm/°C output voltage drift. Its architecture supports fast load transient response (<100µs recovery) and maintains regulation down to 1.7V input.
It features internal thermal shutdown (+150°C trigger, +20°C hysteresis), short-circuit foldback limiting (~55mA), and EN pin logic compatible with 1.3V–5.25V high-level drive. No external discharge FET is included - distinguishing it from the AP7343DQ variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% at +25°C; ensures precise biasing for 1.5V logic rails and analog sensor interfaces |
| Max Output Current | 300mA guaranteed; supports dual-core MCU cores or multi-sensor camera modules without derating |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC-DC converters in automotive power trees |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean supply for RF front-ends and high-resolution ADCs |
| Quiescent Current | 35µA typical; extends battery runtime in always-on vehicle subsystems like telematics wake-up circuits |
| Dropout Voltage | 0.39V max at 300mA (1.2V < VOUT ≤ 1.4V range); allows operation from 1.89V input - critical for cold-crank scenarios |
| Operating Temp | -40°C to +125°C ambient; qualified per AEC-Q100 Grade 1 for under-hood and cabin-mounted ECUs |
Pinout & Package
AP7343Q-15W5-7 is packaged in SOT25 - a 5-pin surface-mount package with exposed pad omitted (non-wettable variant), footprint optimized for space-constrained automotive PCBs and compatible with standard reflow profiles.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires ≥0.47µF ceramic decoupling placed adjacent to pin to suppress input transients |
| 2 | EN | Active-high enable; must be driven to ≥1.3V to activate regulator; floating state prohibited |
| 3 | GND | Analog/digital ground reference; connects directly to PCB ground plane to minimize noise coupling |
| 4 | VOUT | Regulated 1.5V output; requires 1µF ceramic capacitor placed within 2mm of pin for stability |
| 5 | NC | No-connect; internally unconnected; recommended to tie to GND for thermal conduction and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities |
| Low-Noise Regulation | 60µVrms integrated noise enables direct powering of RF ICs and image sensors without post-regulation filtering |
| High PSRR Architecture | 75dB rejection at 1kHz reduces sensitivity to ripple from buck converters feeding VIN |
| Thermal Protection | +150°C junction shutdown with +20°C hysteresis prevents latch-up during sustained overload or poor heatsinking |
| Ultra-Low IQ | 35µA quiescent current supports >10-year battery life in always-on vehicle security and telematics modules |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
Use Scenario: Powering audio DSPs and display controllers in head-unit systems with shared 3.3V/5V rail. IC Role / Device Role / Timing Role: Point-of-load regulator providing clean 1.5V for memory I/O and PLL core biasing. Use Value: 75dB PSRR prevents audible switching artifacts in Class-D amplifiers by rejecting DC-DC ripple. |
Use Scenario: Supplying LNA and mixer stages in 5G-V2X or UWB transceivers. IC Role / Device Role / Timing Role: Low-noise voltage source stabilizing RF signal chain gain and phase integrity. Use Value: 60µVrms noise floor preserves SNR in sub-1GHz receivers operating below –100dBm. |
| Cameras | Automotive POL in ADAS |
Use Scenario: Biasing CIS image sensors and ISP power domains in surround-view cameras. IC Role / Device Role / Timing Role: Fixed 1.5V regulator for sensor analog front-end and MIPI PHY termination. Use Value: ±1% output accuracy ensures consistent pixel response across temperature and line/load variations. |
Use Scenario: Local regulation for radar SoC I/O banks and CAN FD transceivers in front ADAS ECU. IC Role / Device Role / Timing Role: Compact POL delivering 1.5V to high-speed serial interface logic. Use Value: SOT25 footprint enables placement directly beneath BGA packages, minimizing trace inductance and EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343DQ-15W5-7 | Includes active output discharge circuit (30Ω on-resistance); higher standby current (1µA vs. 0.01µA) | Required where rapid VOUT discharge after shutdown is needed (e.g., hot-swap sequencing) | Select only if discharge functionality is mandatory; otherwise AP7343Q-15W5-7 offers lower IQ and identical regulation specs |
| TLV73315PDBVR | 300mA, 1.5V, ±1.5% accuracy, 65dB PSRR @1kHz, 30µVrms noise, SOT-23-5 package | Lacks AEC-Q100 qualification; rated only for industrial (-40°C to +125°C) but not automotive change control | Acceptable for non-PPAP prototyping or cost-sensitive non-safety systems; not suitable for production automotive ECUs |
Compared with AP7343DQ-15W5-7, the AP7343Q-15W5-7 trades discharge capability for ultra-low 0.01µA shutdown current - critical for battery-backed modules. Versus TLV73315PDBVR, it adds AEC-Q100 Grade 1 compliance, tighter ±1% accuracy, and higher 75dB PSRR, making it the only qualified option for safety-critical ADAS power domains.
Availability
AP7343Q-15W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and wireless communication subsystems requiring stable component supply with full AEC-Q100 documentation support.
Supply support for AP7343Q-15W5-7 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, 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 telematics systems demanding AEC-Q100 Grade 1 reliability.
FAQ
What is the maximum input voltage rating for AP7343Q-15W5-7?
The absolute maximum input voltage is 6.0V. Operation above 5.25V violates recommended conditions and risks permanent damage. In automotive applications, the device is typically supplied from a 3.3V or 5V pre-regulated rail, with margin for load-dump transients handled by upstream protection circuitry.
Does AP7343Q-15W5-7 require an external discharge path?
No. The AP7343Q-15W5-7 lacks an internal discharge FET. When disabled via EN, VOUT will decay only through the load and output capacitor leakage. For applications requiring fast discharge, the AP7343DQ-15W5-7 variant includes a 30Ω internal discharge path between VOUT and GND.
Can AP7343Q-15W5-7 operate with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with ≥0.47µF ceramic capacitors. However, 1µF is recommended to ensure robust transient response under 300mA load steps. Lower values increase output voltage deviation during fast load changes, especially when paired with high-ESR capacitors.
Is the NC pin on AP7343Q-15W5-7 required to be grounded?
Grounding the NC pin is strongly recommended - though not electrically required - to improve thermal dissipation and reduce radiated emissions. The pin is unconnected internally, so tying it to GND adds no functional risk and enhances PCB copper area for heat spreading in thermally constrained layouts.
AP7343Q-15W5-7 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.46V @ 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
AP7343Q-15W5-7 FAQ
1.How can I place an order for AP7343Q-15W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-15W5-7 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-15W5-7 reliable?
The price and inventory of AP7343Q-15W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343Q-15W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-15W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-15W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-15W5-7?
AP7343Q-15W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-15W5-7 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-15W5-7?
For technical support, including AP7343Q-15W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-15W5-7 requirements.
6.How does Aetrix verify that AP7343Q-15W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-15W5-7 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-15W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-15W5-7?
All AP7343Q-15W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-15W5-7, 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-15W5-7 part is unused and in its original packaging.
Return procedure for AP7343Q-15W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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