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Diodes Incorporated AP7343Q-30W5-7
- Part No.:
- AP7343Q-30W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343Q-30W5-7.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,113
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Product details
Overview
AP7343Q-30W5-7 from Diodes Incorporated is an AEC-Q100 Grade 1 qualified automotive LDO regulator delivering 300mA output with ±1% VOUT accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). Packaged in SOT25, it operates from 1.7V to 5.25V input and provides fixed 3.0V output for noise-sensitive ADAS camera and RF power rails.
For engineers reviewing the AP7343Q-30W5-7 datasheet, AP7343Q-30W5-7 pinout, AP7343Q-30W5-7 application, or AP7343Q-30W5-7 equivalent, key selection criteria include dropout voltage at 300mA (0.22–0.31V), thermal shutdown threshold (+150°C), EN logic thresholds (0.5V low / 1.3V high), and automotive PPAP support.
Technical Context
The AP7343Q-30W5-7 uses a CMOS-based architecture with integrated voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its enable input supports active-high control with 1.3V minimum VIH and 0.5V maximum VIL, and it lacks internal discharge functionality (non-D variant).
It achieves high PSRR via optimized internal compensation and low-noise biasing, maintaining 75dB rejection at 1kHz across 30mA load and 1.8–3.3V output variants. Dropout voltage scales with output voltage - e.g., 0.22V min at 3.0V VOUT - enabling efficient operation in low-headroom automotive domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% at +25°C; ensures stable core supply for 3.3V-tolerant analog/RF ICs in automotive environments. |
| Max Output Current | 300mA guaranteed; supports dual-camera modules or single-channel RF transceivers without derating at +125°C ambient. |
| PSRR @ 1kHz | 75dB minimum; suppresses switching noise from adjacent DC/DC converters feeding infotainment or ADAS subsystems. |
| Output Noise | 60µVrms (10Hz–100kHz); preserves SNR in automotive camera image signal chains and low-phase-noise RF local oscillators. |
| Quiescent Current | 35µA typical; enables always-on monitoring circuits in vehicle wake-up systems while meeting ISO 26262 ASIL-B leakage budgets. |
| Dropout Voltage | 0.22V min at 300mA (VOUT = 3.0V); allows operation down to VIN = 3.22V, compatible with degraded 3.3V rail conditions in cold-crank scenarios. |
| Operating Temp | -40°C to +125°C junction; validated for under-hood placement in ADAS domain controllers and radar front-ends. |
Pinout & Package
AP7343Q-30W5-7 is housed in a 5-pin SOT25 package (3.0mm × 1.7mm × 1.3mm) with exposed pad omitted; thermal dissipation relies on PCB copper area connected to GND via multiple vias.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires ≥0.47µF ceramic decoupling capacitor placed within 2mm to suppress supply transients during load steps. |
| 2 | EN | Active-high enable; must be driven to ≥1.3V to activate regulator; floating state causes undefined operation and potential shoot-through risk. |
| 3 | GND | Analog/digital ground reference; connects directly to PCB ground plane to minimize impedance and avoid ground bounce in fast-switching loads. |
| 4 | VOUT | Regulated 3.0V output; routed with short, wide trace to load; output capacitor (≥1µF ceramic) must be placed adjacent to this pin. |
| 5 | NC | No-connect terminal; internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C), IATF 16949 manufacturing, PPAP-capable - meets Tier-1 requirements for safety-critical power domains. |
| Low-noise regulation | 60µVrms output noise over 10Hz–100kHz bandwidth enables direct powering of RF synthesizers and high-resolution ADCs without additional filtering. |
| High PSRR architecture | 75dB ripple rejection at 1kHz ensures immunity to 1–10MHz switching noise from buck converters sharing the same battery rail. |
| Ultra-low quiescent current | 35µA IQ allows integration into always-on vehicle networks (e.g., CAN FD wake-up receivers) without exceeding 100µA system sleep budget. |
| Thermal protection | +150°C junction shutdown with +20°C hysteresis prevents latch-up during sustained overload or poor heatsinking in compact enclosures. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
Use Scenario: Powering audio DSPs and display timing controllers in head-unit systems subject to battery ripple and ignition noise. IC Role / Device Role / Timing Role: Primary 3.0V LDO for noise-sensitive analog blocks requiring clean, regulated voltage independent of main 5V/3.3V DC/DC outputs. Use Value: 75dB PSRR rejects alternator ripple and Class D amplifier switching noise, preserving audio SNR >95dB and display gamma stability. |
Use Scenario: Biasing VCOs and LNAs in 5G telematics modems and cellular-V2X transceivers operating near engine EMI sources. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering ultra-low-noise 3.0V to RF signal chain components with minimal phase jitter impact. Use Value: 60µVrms noise limits close-in phase noise degradation to <0.1° RMS jitter, maintaining LTE/5G EVM compliance under vibration. |
| Camera Module Power | ADAS POL Supply |
Use Scenario: Supplying image sensors and ISP processors in rear-view and surround-view cameras exposed to thermal cycling and ESD events. IC Role / Device Role / Timing Role: Fixed 3.0V LDO providing stable bias to CIS analog front-end and MIPI CSI-2 serializer under cold-crank (VIN = 6.0V → 3.2V). Use Value: 0.22V dropout enables continuous operation down to 3.22V input, preventing frame loss during engine start; ±1% accuracy maintains sensor gain linearity. |
Use Scenario: Powering vision processor cores and radar MMIC bias rails in forward collision warning and automatic emergency braking ECUs. IC Role / Device Role / Timing Role: Safety-relevant 3.0V supply with AEC-Q100 qualification and thermal shutdown, supporting ASIL-B functional safety decomposition. Use Value: +150°C thermal cutoff prevents thermal runaway during extended high-temp operation; PPAP documentation supports ISO 26262 FMEDA reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343DQ-30W5-7 | Includes active output discharge (30Ω NMOS) during shutdown; 1µA higher ISTANDBY (1.0µA vs. 0.01µA) | Required where rapid VOUT discharge prevents back-powering of downstream logic or meets specific reset timing specs | Select if system requires controlled VOUT decay; otherwise AP7343Q-30W5-7 offers lower standby current and simpler enable sequencing. |
| TLD1130FV-30 | 300mA AEC-Q100 LDO with 65dB PSRR @ 1kHz, 120µVrms noise, and 50µA IQ; larger SOT-223 package | Better thermal performance (θJA = 60°C/W) but higher noise limits use in RF/camera; suited for non-noise-critical MCU cores | Choose for higher thermal margin in constrained airflow zones; avoid when 60µVrms noise or 75dB PSRR are mandatory for signal integrity. |
Compared with AP7343DQ-30W5-7, the AP7343Q-30W5-7 trades discharge capability for 100× lower shutdown current - critical for battery-backed systems - while TLD1130FV-30 sacrifices noise/PSRR for robust thermal handling in non-signal-path rails.
Availability
AP7343Q-30W5-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and wireless telematics requiring stable component supply with full AEC-Q100 traceability and PPAP documentation.
Supply support for AP7343Q-30W5-7 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 devices for automotive, industrial, and consumer markets, with IATF 16949-certified fabrication and assembly facilities.
The AP7343Q belongs to Diodes' automotive-grade LDO portfolio designed specifically for noise-sensitive power domains in ADAS, infotainment, and body electronics - emphasizing PSRR, low noise, and AEC-Q100 reliability.
FAQ
What is the minimum input voltage required for AP7343Q-30W5-7 to maintain regulation at 300mA?
The minimum input voltage is determined by dropout voltage: at 300mA and 3.0V output, typical dropout is 0.25V with max 0.31V. Thus, VIN must be ≥3.31V to sustain regulation. Below this, VOUT drops linearly per the dropout curve in DS41595 Rev. 5–2, page 3.
Can AP7343Q-30W5-7 be used without an external output capacitor?
No. The datasheet mandates a minimum 1.0µF ceramic output capacitor (COUT) for stability and transient response. Omitting COUT risks oscillation, poor load step recovery, and failure to meet PSRR/noise specs - especially under 300mA dynamic loads in automotive environments.
Is the EN pin 5.25V-tolerant when VIN is at 1.7V?
Yes. The EN pin has absolute maximum rating of 6.0V and operates correctly across full VIN range (1.7V–5.25V). Its VIH threshold (1.3V min) and VIL threshold (0.5V max) are referenced to GND, not VIN, enabling direct interface with 3.3V or 5V GPIOs regardless of input rail level.
How does the NC pin affect thermal performance in SOT25 layout?
The NC pin (Pin 5) is internally unconnected but thermally coupled to the die. Tying it to GND via a thermal pad and multiple vias improves heat transfer to the PCB ground plane, reducing θJA by up to 15°C/W in standard JEDEC 2-layer boards - critical for sustaining 300mA at +125°C ambient.
AP7343Q-30W5-7 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.32V @ 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-30W5-7 FAQ
1.How can I place an order for AP7343Q-30W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-30W5-7 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-30W5-7 reliable?
The price and inventory of AP7343Q-30W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343Q-30W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-30W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-30W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-30W5-7?
AP7343Q-30W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-30W5-7 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-30W5-7?
For technical support, including AP7343Q-30W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-30W5-7 requirements.
6.How does Aetrix verify that AP7343Q-30W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-30W5-7 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-30W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-30W5-7?
All AP7343Q-30W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-30W5-7, 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-30W5-7 part is unused and in its original packaging.
Return procedure for AP7343Q-30W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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