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Diodes Incorporated AP7347DQ-25W5-7
- Part No.:
- AP7347DQ-25W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7347DQ-25W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,485
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Product details
Overview
AP7347DQ-25W5-7 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 2.5V fixed-output low-dropout regulator delivering 500mA output current with ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It features enable control, thermal shutdown, short-circuit protection, and auto-discharge functionality-designed for infotainment power supplies, ADAS point-of-load regulation, and automotive RF subsystems.
For engineers reviewing the AP7347DQ-25W5-7 datasheet, AP7347DQ-25W5-7 pinout, AP7347DQ-25W5-7 application, or AP7347DQ-25W5-7 equivalent, key selection criteria include its 2.5V fixed output, SOT25 (Type A1) wettable-flank package, 0.31V typical dropout at 500mA, 60µA quiescent current, and AEC-Q100 qualification for under-hood automotive use.
Technical Context
The AP7347DQ-25W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown logic. Its internal resistor network fixes VOUT at 2.5V, eliminating external feedback components while maintaining ±1% accuracy across -40°C to +125°C ambient.
It supports active enable control (EN threshold: 0–0.5V low, 1.25–5.5V high), delivers 75dB ripple rejection at 1kHz, and includes an N-channel auto-discharge switch (30Ω typical) activated during shutdown to rapidly discharge VOUT. Thermal resistance is θJA = 140°C/W in SOT25.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% - eliminates need for external feedback resistors; ensures stable rail for 2.5V logic or analog sensors. |
| Max Output Current | 500mA - supports mid-power automotive loads such as camera ISPs or RF transceivers without external boost stages. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters in noisy automotive power domains. |
| Output Noise | 60µVrms (10Hz–100kHz) - enables clean supply for noise-sensitive RF front-ends and high-resolution ADCs. |
| Quiescent Current | 60µA typical - minimizes standby power loss in always-on automotive modules (e.g., telematics wake-up circuits). |
| Dropout Voltage | 0.31V typical at 500mA - allows operation down to VIN = 2.81V, supporting wide-input battery-supplied systems. |
| Enable Threshold | VIL ≤ 0.5V, VIH ≥ 1.25V - compatible with 1.8V/3.3V/5V logic families without level-shifting. |
| AEC-Q100 Grade | Grade 1 (–40°C to +125°C) - qualified for engine bay and dashboard applications per automotive reliability standards. |
Pinout & Package
SOT25 (Type A1) package: 2.9mm × 2.8mm × 1.45mm body, wettable flanks, 5-pin surface-mount with exposed pad not present (non-thermal-pad variant per W5 suffix). Pin 1 = VIN, Pin 2 = EN, Pin 3 = GND, Pin 4 = VOUT, Pin 5 = NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Power Input | Accepts 1.7V–5.5V input; requires ≥1µF ceramic decoupling capacitor placed adjacent to minimize trace inductance. |
| 2 (EN) | Enable Control | Active-high logic input; must be driven to avoid floating; ties to VIN for permanent ON operation. |
| 3 (GND) | Ground Reference | Primary return path for input/output currents; connects to PCB ground plane to reduce impedance and EMI. |
| 4 (VOUT) | Regulated Output | Delivers fixed 2.5V ±1%; requires ≥1µF ceramic output capacitor near load for transient stability. |
| 5 (NC) | No Connect | Not bonded internally; recommended to connect to GND for improved thermal dissipation and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR (75dB @ 1kHz) | Rejects ripple from switching regulators in multi-rail automotive power architectures without additional filtering. |
| Low-noise 60µVrms output | Meets stringent noise requirements of RF receivers and high-speed serial interfaces (e.g., MIPI D-PHY in cameras). |
| Auto-discharge via 30Ω NMOS | Drains VOUT within milliseconds after shutdown-prevents back-powering of downstream circuitry. |
| Thermal shutdown + hysteresis | Triggers at +170°C with +20°C hysteresis-enables safe recovery after overload without latch-up. |
| AEC-Q100 Grade 1 compliance | Validated for continuous operation at 125°C ambient-supports placement in instrument clusters and ADAS ECUs. |
Applications
| Infotainment Power Supply | ADAS Camera POL |
|---|---|
|
Use Scenario: Powering audio DSPs and display controllers in head units with shared 5V buck converter input. IC Role / Device Role / Timing Role: Low-noise post-regulator providing clean 2.5V rail for analog audio codecs and touch controller I/O. Use Value: 60µVrms noise prevents audible hiss; 75dB PSRR isolates sensitive analog sections from digital switching noise. |
Use Scenario: Point-of-load regulation for image signal processors in forward-facing ADAS cameras. IC Role / Device Role / Timing Role: Stable 2.5V supply for ISP core logic and sensor interface buffers requiring tight voltage tolerance. Use Value: ±1% accuracy ensures consistent pixel processing performance; 500mA capacity supports burst-mode imaging loads. |
| Automotive RF Transceiver | Telematics Wake-Up Circuit |
|
Use Scenario: Biasing LNA and mixer stages in cellular/V2X modems operating in harsh EMI environments. IC Role / Device Role / Timing Role: Ultra-low-noise LDO supplying RF ICs where phase noise and EVM are critical. Use Value: 60µVrms noise directly improves receiver sensitivity; 0.31V dropout enables operation from degraded 3.3V bus. |
Use Scenario: Always-on power domain for GNSS receivers and CAN wake-up logic in parked vehicle mode. IC Role / Device Role / Timing Role: Low-quiescent-current regulator sustaining 2.5V rail during extended sleep cycles. Use Value: 60µA IQ minimizes battery drain; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS7B8125QDCYRQ1 | 2.5V fixed, 500mA, 65dB PSRR @ 1kHz, 40µVrms, 25µA IQ, SOT-23-5 | Lower noise and IQ but reduced PSRR; no auto-discharge; smaller SOT-23 footprint | Select when ultra-low standby power is prioritized over ripple rejection and fast VOUT discharge. |
| ON Semi NCP114AMX25T2G | 2.5V fixed, 300mA, 70dB PSRR @ 1kHz, 30µVrms, 55µA IQ, TSOP-5 | Lower current rating, higher PSRR than AP7347DQ-25W5-7, no auto-discharge, non-AEC-Q100 | Use only in non-automotive industrial applications where 300mA suffices and AEC-Q100 is not required. |
Compared with TPS7B8125QDCYRQ1 and NCP114AMX25T2G, the AP7347DQ-25W5-7 uniquely combines AEC-Q100 Grade 1 qualification, integrated auto-discharge, and balanced 75dB PSRR with 60µVrms noise-making it optimal for safety-critical automotive POL where both noise suppression and controlled shutdown behavior are mandatory.
Availability
AP7347DQ-25W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for AP7347DQ-25W5-7 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 devices for automotive, industrial, computing, and consumer markets.
The AP7347DQ belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, high-reliability power management in ADAS, infotainment, and body electronics.
FAQ
What is the minimum input voltage required for AP7347DQ-25W5-7 to regulate 2.5V at 500mA?
The minimum input voltage is determined by dropout: 0.31V typical at 500mA, so VIN must be ≥ 2.81V. The datasheet specifies absolute minimum VIN = 1.7V, but regulation fails below dropout margin. For guaranteed 2.5V output under full load, maintain VIN ≥ 2.85V across temperature and process variation.
Does AP7347DQ-25W5-7 require an external pull-up on the EN pin for default-on operation?
No external pull-up is required. The EN pin can be directly tied to VIN to ensure permanent enable. The device accepts EN = VIN (up to 5.5V) as valid high-level input. Floating EN is prohibited-it must be actively driven or hard-connected to avoid erratic startup/shutdown behavior.
Can the NC pin (Pin 5) be left unconnected in the SOT25 layout?
No. Although internally unconnected, Pin 5 (NC) should be soldered to GND on the PCB. This maximizes copper area for thermal dissipation and reduces EMI coupling-critical for automotive EMC compliance. Leaving it floating degrades thermal performance and may increase radiated emissions.
Is the auto-discharge function active during normal operation or only in shutdown mode?
The auto-discharge NMOS (30Ω typical) activates exclusively when EN is pulled low (shutdown mode). During normal operation (EN high), the discharge path is disabled. This ensures VOUT remains stable during active regulation while enabling rapid, controlled discharge upon disable-preventing backfeeding into upstream sources.
AP7347DQ-25W5-7 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):
- 2.5V
- 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-25W5-7 FAQ
1.How can I place an order for AP7347DQ-25W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-25W5-7 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-25W5-7 reliable?
The price and inventory of AP7347DQ-25W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347DQ-25W5-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-25W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-25W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-25W5-7?
AP7347DQ-25W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-25W5-7 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-25W5-7?
For technical support, including AP7347DQ-25W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-25W5-7 requirements.
6.How does Aetrix verify that AP7347DQ-25W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-25W5-7 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-25W5-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-25W5-7?
All AP7347DQ-25W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-25W5-7, 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-25W5-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-25W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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