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Diodes Incorporated AP7347DQ-29W5-7
- Part No.:
- AP7347DQ-29W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7347DQ-29W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
AP7347DQ-29W5-7 from Diodes Incorporated is an automotive-grade 500mA low-dropout linear regulator with fixed 2.9V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 60µA quiescent current. It features enable control, thermal shutdown, short-circuit protection, and auto-discharge functionality - designed for noise-sensitive power rails in ADAS camera modules and infotainment systems.
For engineers reviewing the AP7347DQ-29W5-7 datasheet, AP7347DQ-29W5-7 pinout, AP7347DQ-29W5-7 application, or AP7347DQ-29W5-7 equivalent, key selection criteria include its AEC-Q100 qualification, SOT25 (Type A1) wettable-flank package, 0.32V max dropout at 500mA (for VOUT = 2.9V), and guaranteed operation from –40°C to +125°C ambient.
Technical Context
The AP7347DQ-29W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown logic. Its internal architecture supports fast load transient response (<10µs settling) and enables stable regulation with only 1µF input/output ceramic capacitors.
It implements active discharge via an internal N-channel MOSFET (RON = 30Ω typical when disabled), ensuring rapid VOUT decay during shutdown. The EN pin accepts logic-level control (VIL ≤ 0.5V, VIH ≥ 1.25V) and must not float - tying to VIN ensures always-on operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9V ±1% - eliminates external feedback resistors and ensures precise rail generation for 2.9V-specified sensors or RF ICs. |
| Max Output Current | 500mA - sufficient to power dual-core microcontrollers or image signal processors in automotive cameras. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters in POL applications. |
| Output Noise | 60µVrms (10Hz–100kHz) - critical for analog front-ends and high-resolution ADCs in ADAS vision systems. |
| Quiescent Current | 60µA typical - enables ultra-low-power standby modes in always-on vehicle subsystems. |
| Dropout Voltage | 0.32V max at 500mA - allows operation from 3.22V input, supporting wide VIN range (1.7V–5.5V) in start-stop battery environments. |
| Thermal Shutdown | 170°C threshold with 20°C hysteresis - protects against sustained overload in enclosed automotive enclosures. |
Pinout & Package
SOT25 (Type A1) package: 5-pin surface-mount, wettable flank, 2.9mm × 2.8mm footprint, 1.45mm height, with exposed pad for thermal enhancement (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Accepts 1.7V–5.5V; requires local 1µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 (EN) | Enable Control Input | Active-high logic interface; must be driven to ≥1.25V to enable, ≤0.5V to disable; floating prohibited. |
| 3 (GND) | Ground Reference | Primary return path for input/output current; connects to PCB ground plane for low-impedance thermal and electrical path. |
| 4 (VOUT) | Regulated Output | Delivers stable 2.9V ±1%; requires 1µF ceramic output capacitor placed within 2mm of pin and GND. |
| 5 (NC) | No Connect | Internally unconnected; recommended to tie to GND for improved thermal dissipation and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (–40°C to +125°C) - validated for under-hood and cabin-mounted automotive electronics. |
| Auto-Discharge Function | 30Ω internal N-MOSFET discharges VOUT when EN = low - prevents back-powering of downstream circuits during sleep mode. |
| Low-Noise Architecture | 60µVrms noise floor - avoids corruption of sensitive analog signals in camera ISPs and RF receivers. |
| High PSRR at Low Frequencies | 75dB @ 1kHz - rejects ripple from buck converter switching frequencies and their harmonics. |
| Wide Input Range | 1.7V–5.5V operation - supports direct connection to Li-ion battery packs or post-buck 3.3V/5V rails. |
Applications
| ADAS Camera Module Power | Infotainment SoC Core Rail |
|---|---|
|
Use Scenario: Powering image sensor and ISP in forward-facing driver-assistance camera. IC Role / Device Role / Timing Role: Primary LDO supplying clean 2.9V to analog pixel array and digital processing block. Use Value: 60µVrms noise prevents fixed-pattern noise in captured imagery; 500mA output sustains burst-mode capture without droop. |
Use Scenario: Providing stable 2.9V core voltage to application processor in head-unit infotainment system. IC Role / Device Role / Timing Role: Post-regulator after main PMIC, delivering low-noise domain-specific supply. Use Value: 75dB PSRR isolates processor from DC/DC switching noise; ±1% accuracy ensures reliable CPU voltage margining. |
| Automotive Wireless Transceiver Bias | Telematics GNSS Front-End |
|
Use Scenario: Biasing 2.9V LNA and mixer stages in LTE/V2X communication module. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from noisy digital domains. Use Value: Ultra-low 60µVrms noise preserves receiver sensitivity; thermal shutdown prevents latch-up during antenna mismatch events. |
Use Scenario: Powering GPS/GNSS RF front-end IC requiring precise 2.9V bias under cold-cranking conditions. IC Role / Device Role / Timing Role: High-PSRR, low-dropout regulator maintaining regulation during 6V battery dips. Use Value: 0.32V dropout enables operation down to 3.22V input; AEC-Q100 qualification ensures reliability across 15-year vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73329PDBVR | 300mA output, 45dB PSRR @ 1kHz, no auto-discharge, non-automotive grade | Lacks AEC-Q100 qualification and thermal shutdown hysteresis; unsuitable for under-hood deployment | Select only for cost-sensitive non-automotive consumer designs where 500mA and 75dB PSRR are not required |
| NCP114AMX29TBG | 300mA output, 65dB PSRR @ 1kHz, ±2% accuracy, no discharge FET | Lower accuracy and PSRR; lacks integrated discharge path - requires external circuitry for VOUT decay | Consider only if board space permits discrete discharge solution and 2.9V tolerance放宽 to ±2% |
Compared with TLV73329PDBVR and NCP114AMX29TBG, the AP7347DQ-29W5-7 delivers 67% higher output current, 10–15dB better PSRR, tighter ±1% output accuracy, and built-in discharge - making it uniquely suited for demanding automotive imaging and RF power management where noise, reliability, and integration are critical.
Availability
AP7347DQ-29W5-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC core rails, and telematics GNSS front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP7347DQ-29W5-7 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, with design centers in Asia, Europe, and the U.S., and manufacturing certified to IATF 16949.
The AP7347DQ belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, high-reliability power management in ADAS, infotainment, and connectivity systems operating from –40°C to +125°C.
FAQ
What is the maximum allowable input voltage for AP7347DQ-29W5-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.5V. Exceeding 5.5V risks permanent damage per Absolute Maximum Ratings. For automotive applications with load-dump transients, external clamping or pre-regulation is required before this LDO's VIN pin.
Does AP7347DQ-29W5-7 require an external discharge resistor?
No. The device integrates an N-channel MOSFET (RON ≈ 30Ω) between VOUT and GND that activates automatically when EN is pulled low, discharging the output capacitor without external components. This eliminates BOM cost and layout area while ensuring controlled shutdown behavior.
How does the NC pin function in the SOT25 package?
Pin 5 is internally unconnected. Diodes recommends connecting it to PCB ground to maximize copper area for thermal conduction and reduce EMI coupling. It serves no electrical function but improves thermal performance and EMC robustness when tied to GND.
Is AP7347DQ-29W5-7 compatible with lead-free reflow profiles?
Yes. It is fully RoHS-compliant, halogen- and antimony-free ("Green"), and rated for Moisture Sensitivity Level 1 per J-STD-020. The SOT25 package supports standard Pb-free reflow profiles up to 260°C peak, with matte tin-plated terminations meeting MIL-STD-202 Method 208 solderability requirements.
AP7347DQ-29W5-7 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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7347DQ-29W5-7 FAQ
1.How can I place an order for AP7347DQ-29W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-29W5-7 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 AP7347DQ-29W5-7 reliable?
The price and inventory of AP7347DQ-29W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347DQ-29W5-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-29W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-29W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-29W5-7?
AP7347DQ-29W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-29W5-7 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 AP7347DQ-29W5-7?
For technical support, including AP7347DQ-29W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-29W5-7 requirements.
6.How does Aetrix verify that AP7347DQ-29W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-29W5-7 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 AP7347DQ-29W5-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-29W5-7?
All AP7347DQ-29W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-29W5-7, 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 AP7347DQ-29W5-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-29W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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