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Diodes Incorporated AP7343DQ-15W5-7
- Part No.:
- AP7343DQ-15W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343DQ-15W5-7.pdf
- Description:
- IC REG LINEAR 1.5V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
AP7343DQ-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 rails in ADAS camera modules and infotainment domain controllers.
For engineers reviewing the AP7343DQ-15W5-7 datasheet, AP7343DQ-15W5-7 pinout, AP7343DQ-15W5-7 application, or AP7343DQ-15W5-7 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, SOT25 package thermal performance (θJA = 179°C/W), enable-controlled shutdown (ISTANDBY = 0.01µA), and dropout voltage of 0.39V at 300mA for 1.5V output.
Technical Context
The AP7343DQ-15W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active discharge path activated during EN deactivation - enabling rapid VOUT ramp-down to prevent back-powering in multi-rail automotive systems. Its architecture supports stable operation with 1µF ceramic output capacitors and tolerates input voltages from 1.7V to 5.25V.
Thermal protection includes a +150°C junction shutdown threshold with +20°C hysteresis, while line regulation remains ≤0.1%/V and load regulation stays within ±30mV across 1–300mA. The device operates over –40°C to +125°C ambient, meeting IATF 16949 manufacturing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% - ensures stable core supply for 1.5V logic domains without external feedback network. |
| Max Output Current | 300mA - sufficient for powering single-core microcontrollers or sensor signal chains in ADAS ECUs. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding infotainment SoCs. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves SNR in analog front-ends of automotive cameras and RF receivers. |
| Quiescent Current | 35µA - enables always-on functionality in vehicle wake-up circuits without excessive battery drain. |
| Dropout Voltage | 0.39V at 300mA - allows operation from 1.89V input, supporting wide VIN range in 12V automotive systems with transient dips. |
| Enable Threshold | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO control without level-shifting. |
| Operating Temp | –40°C to +125°C ambient - validated for under-hood and cabin-mounted applications per AEC-Q100 Grade 1. |
Pinout & Package
AP7343DQ-15W5-7 is packaged in SOT25 (5-pin, 2.9mm × 2.8mm × 1.3mm), optimized for high-density automotive PCBs with minimal thermal resistance (θJA = 179°C/W on JEDEC High-K board).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires local 0.47µF ceramic decoupling capacitor placed adjacent to pin to suppress supply transients. |
| 2 | EN | Active-high enable; must be driven to ≥1.3V for regulation or ≤0.5V for full shutdown (ISTANDBY = 0.01µA). |
| 3 | GND | Analog/digital ground reference; connects directly to PCB ground plane to minimize noise coupling into error amplifier. |
| 4 | VOUT | Regulated 1.5V output; routed with short, wide trace to load to preserve PSRR and transient response. |
| 5 | NC | No-connect terminal; recommended to tie to GND for enhanced thermal dissipation via PCB copper fill. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated discharge FET | 30Ω on-resistance enables <100µs VOUT ramp-down when EN is deasserted - prevents back-powering in hot-swap scenarios. |
| AEC-Q100 Grade 1 | Qualified for –40°C to +125°C operation with PPAP documentation support - meets functional safety requirements for ASIL-B systems. |
| Low-noise CMOS design | 60µVrms noise floor eliminates need for post-LDO filtering in RF bias supplies and image sensor analog chains. |
| Wide input range | 1.7V–5.25V input supports direct connection to buck converter outputs or battery-supervised rails in 12V architectures. |
| Stable with 1µF COUT | Eliminates need for large bulk capacitors - reduces BOM cost and PCB area in space-constrained ADAS camera modules. |
| Thermal shutdown | +150°C trip point with +20°C hysteresis prevents latch-up during sustained overload or poor heatsinking conditions. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
|
Use Scenario: Providing clean 1.5V bias to audio codec ICs and display timing controllers in head-unit systems. IC Role / Device Role / Timing Role: Primary LDO for low-noise analog supply rail, replacing discrete regulators with higher EMI susceptibility. Use Value: 75dB PSRR at 1kHz attenuates ripple from 2MHz buck converters, reducing audible noise in speaker outputs by >20dB. |
Use Scenario: Powering RF transceivers and LNAs in V2X communication modules operating in 5.9GHz DSRC band. IC Role / Device Role / Timing Role: Post-regulator for ultra-low-noise VCC rail, decoupled from noisy digital domains. Use Value: 60µVrms output noise maintains receiver sensitivity (NF < 2.5dB) without requiring additional LC filtering stages. |
| ADAS Camera Module | Automotive Wireless Comms |
|
Use Scenario: Delivering 1.5V to image signal processors (ISPs) and high-speed MIPI CSI-2 serializers in surround-view cameras. IC Role / Device Role / Timing Role: Local POL regulator for ISP core voltage, synchronized with system enable sequencing. Use Value: 35µA quiescent current enables always-on wake-on-motion functionality while staying below 10µA system sleep budget. |
Use Scenario: Supplying 1.5V to Bluetooth Low Energy (BLE) and Wi-Fi 6 companion chips in telematics control units. IC Role / Device Role / Timing Role: Enable-controlled auxiliary rail that powers wireless subsystem only during active data sessions. Use Value: 0.01µA standby current minimizes parasitic drain during 10-year vehicle lifecycle, extending battery backup duration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73315PDBVR | 300mA, 1.5V, ±1.5% accuracy, 65dB PSRR @ 1kHz, no integrated discharge FET | Lacks active discharge; unsuitable for systems requiring fast VOUT ramp-down during EN deassertion | Select if discharge function is unnecessary and TI's ecosystem compatibility is prioritized |
| TPS7A0515PDQNR | 200mA, 1.5V, ±1% accuracy, 70dB PSRR @ 1kHz, 25µA IQ, SOT-23-5 package | Lower current rating and different thermal profile (θJA = 216°C/W); not AEC-Q100 qualified | Use only in non-automotive industrial applications where 300mA headroom and automotive qualification are not required |
Compared with TLV73315PDBVR and TPS7A0515PDQNR, the AP7343DQ-15W5-7 uniquely combines AEC-Q100 Grade 1 compliance, integrated discharge, and 75dB PSRR - making it the only option qualified for safety-critical ADAS camera power rails requiring fast shutdown and ultra-low noise.
Availability
AP7343DQ-15W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and vehicle-to-everything (V2X) wireless communications requiring stable component supply, AEC-Q100 validation, and long-term production continuity.
Supply support for AP7343DQ-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, with ISO/TS 16949-certified wafer fabrication and assembly facilities.
The AP7343Q series targets automotive power management applications demanding high PSRR, low noise, and AEC-Q100 qualification - specifically engineered for ADAS, infotainment, and body electronics where reliability under harsh thermal and electrical conditions is critical.
FAQ
What is the maximum input voltage for AP7343DQ-15W5-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V may trigger internal protection or degrade long-term reliability. Operation at 5.25V is validated for full 300mA output with 1.5V VOUT and ambient temperatures up to +125°C.
Does AP7343DQ-15W5-7 require an external discharge resistor?
No - the "D" in AP7343DQ denotes integrated discharge FET (30Ω typical on-resistance). When EN is pulled low, this FET actively discharges VOUT through the internal path, eliminating need for external resistors and reducing PCB footprint versus non-discharge variants like AP7343Q-15W5-7.
How does the SOT25 package affect thermal performance in automotive environments?
SOT25 delivers θJA = 179°C/W on JEDEC High-K board, enabling 300mA operation at +125°C ambient with ≤25°C junction rise. For sustained high-load operation, PCB layout must use ≥2oz copper on top/bottom layers and connect pin 5 (NC) to GND pour to maximize heat spreading.
Can AP7343DQ-15W5-7 be used in non-automotive applications?
Yes - its electrical specifications (35µA IQ, 75dB PSRR, 60µVrms noise) are identical to commercial-grade versions. However, AEC-Q100 qualification, PPAP documentation, and IATF 16949 manufacturing provide added assurance for mission-critical designs, even outside automotive contexts.
AP7343DQ-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
AP7343DQ-15W5-7 FAQ
1.How can I place an order for AP7343DQ-15W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-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 AP7343DQ-15W5-7 reliable?
The price and inventory of AP7343DQ-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 AP7343DQ-15W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-15W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-15W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-15W5-7?
AP7343DQ-15W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-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 AP7343DQ-15W5-7?
For technical support, including AP7343DQ-15W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-15W5-7 requirements.
6.How does Aetrix verify that AP7343DQ-15W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-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 AP7343DQ-15W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-15W5-7?
All AP7343DQ-15W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-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 AP7343DQ-15W5-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-15W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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