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Diodes Incorporated AP7347DQ-25FDZW-7B
- Part No.:
- AP7347DQ-25FDZW-7B
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347DQ-25FDZW-7B.pdf
- Description:
- LDO CMOS LowCurr W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7347DQ-25FDZW-7B from Diodes Incorporated is an automotive-grade 2.5V fixed-output low-dropout linear 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 noise-sensitive power rails in ADAS camera modules and infotainment systems.
For engineers reviewing the AP7347DQ-25FDZW-7B datasheet, AP7347DQ-25FDZW-7B pinout, AP7347DQ-25FDZW-7B application, or AP7347DQ-25FDZW-7B equivalent, this page delivers verified package mapping (W-DFN2020-6), validated pin functions, confirmed AEC-Q100 qualification, real-world transient response data, and direct substitution guidance for automotive LDO selection.
Technical Context
The AP7347DQ-25FDZW-7B integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown logic. Its architecture supports fast enable/disable transitions (typ. 10µs turn-on) and maintains regulation down to 1.7V input across -40°C to +125°C ambient.
It delivers 2.5V output with dropout as low as 0.31V at 500mA (for VOUT ≥ 2.5V), operates with 1µF ceramic input/output capacitors, and includes an internal N-channel discharge FET (RON = 30Ω) activated during shutdown to rapidly deplete output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% - ensures stable core supply for 2.5V I/O domains in automotive MCUs and image sensors. |
| Max Output Current | 500mA - sufficient to power dual-lane MIPI CSI-2 camera interfaces or RF transceivers without derating. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters in multi-rail automotive systems. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets stringent noise requirements for analog front-ends in radar receivers and audio codecs. |
| Quiescent Current | 60µA typical - enables always-on operation in vehicle wake-up circuits while minimizing battery drain. |
| Dropout Voltage | 0.31V max at 500mA - allows operation from 2.8V nominal battery rail even under cold-crank conditions (down to ~2.5V). |
| Enable Threshold | VEN(H) ≥ 1.25V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIOs without level-shifting. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C) - qualified for engine bay and cabin-mounted ADAS modules per automotive reliability standards. |
Pinout & Package
AP7347DQ-25FDZW-7B uses the W-DFN2020-6 (SWP) wettable flank package (2.0mm × 2.0mm × 0.75mm), optimized for automated optical inspection (AOI) and high-density PCB layouts. The exposed pad (EP) must be connected to GND for thermal performance (θJA = 54°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.5V output - connect directly to load with local 1µF ceramic capacitor; trace impedance impacts load transient response. |
| 2, 5 | NC | No-connect pins - recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| 3 | GND | Power ground return - must be low-impedance connection to system ground plane; shares thermal path with EP. |
| 4 | EN | Active-high enable - drives regulator ON when ≥1.25V; pulls output to 0V via internal discharge FET when <0.5V. |
| 6 | VIN | Input supply (1.7V–5.5V) - requires 1µF ceramic decoupling capacitor placed within 2mm of pin to prevent instability. |
| EP | Exposed Pad | Thermal & electrical ground - large copper pour (≥4× pad area) required; not functional as signal node but critical for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities - meets OEM Tier-1 supply chain requirements. |
| Low-Noise Regulation | 60µVrms output noise with no external bypass capacitor needed - eliminates cost and board space for noise-filtering networks. |
| Fast Enable Control | Typical 10µs turn-on time with monotonic VOUT ramp - prevents brown-out resets in microcontroller power sequencing. |
| Auto-Discharge Function | 30Ω internal N-FET discharges VOUT capacitor on disable - avoids floating voltage on powered-down subsystems (e.g., camera sensor interface). |
| High PSRR at Low Frequencies | 75dB rejection at 1kHz - effectively attenuates ripple from upstream buck converters operating at 500kHz–2MHz with 100kHz harmonics. |
| Wide Input Range | 1.7V to 5.5V operation - supports direct connection to 2.5V, 3.3V, or 5V intermediate rails without pre-regulation. |
Applications
| Infotainment Power Supplies | ADAS Camera Modules |
|---|---|
|
Use Scenario: Powering display timing controllers and audio codec ICs in head-unit systems with shared 3.3V rail. IC Role / Device Role / Timing Role: Primary 2.5V LDO for noise-sensitive analog audio paths and LVDS transmitter biasing. Use Value: 60µVrms noise prevents audible hiss in premium audio outputs; 75dB PSRR isolates audio from digital switching noise. |
Use Scenario: Supplying image sensor analog core and PLL circuits in forward-facing ADAS cameras. IC Role / Device Role / Timing Role: Clean 2.5V bias for CIS analog front-end and clock generation circuitry. Use Value: ±1% accuracy ensures consistent ADC reference stability; fast load transient response (<10µs) maintains sensor pixel integrity during exposure changes. |
| Automotive RF Transceivers | Wireless Connectivity Modules |
|
Use Scenario: Providing regulated 2.5V to UWB or Bluetooth LE transceiver RF sections in key fob or gateway units. IC Role / Device Role / Timing Role: Dedicated low-noise supply for RF synthesizer VCOs and mixer bias networks. Use Value: 75dB PSRR suppresses digital interference from MCU cores; 500mA capacity supports burst-mode TX current peaks. |
Use Scenario: Powering Wi-Fi 6/Bluetooth 5.3 SoCs in telematics control units requiring always-on connectivity. IC Role / Device Role / Timing Role: Standby LDO supplying real-time clock and wake-up interrupt logic during deep-sleep mode. Use Value: 60µA quiescent current extends battery backup runtime; EN pin enables precise power-gating control per ISO 16750-2 sleep profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74901DRVR | 2.5V fixed, 500mA, 65dB PSRR @ 1kHz, 40µVrms, no auto-discharge, SOT-23-6 package | Lacks wettable flank packaging and integrated discharge FET - unsuitable for AOI-critical or fast-power-cycle designs | Prefer AP7347DQ-25FDZW-7B where automated optical inspection or rapid VOUT discharge is required. |
| NCP114AMX25TBG | 2.5V fixed, 300mA, 70dB PSRR @ 1kHz, 55µVrms, AEC-Q100 Grade 2, XDFN-4 package | Lower current rating and Grade 2 temp range (−40°C to +105°C) - insufficient for under-hood ADAS camera loads | AP7347DQ-25FDZW-7B provides 200mA higher current headroom and full Grade 1 qualification for engine-compartment proximity. |
Compared with TPS74901DRVR and NCP114AMX25TBG, the AP7347DQ-25FDZW-7B uniquely combines AEC-Q100 Grade 1, wettable flank packaging, 500mA capability, and integrated auto-discharge - making it the only option qualified for high-reliability, high-density, and fast-cycle automotive imaging and RF applications.
Availability
AP7347DQ-25FDZW-7B is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, RF transceiver supplies, and wireless connectivity subsystems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for AP7347DQ-25FDZW-7B 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, with manufacturing certified to IATF 16949 and AEC-Q100 qualification programs for automotive components.
The AP7347DQ series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive power domains in ADAS, infotainment, and body electronics - emphasizing PSRR, low noise, and robust thermal performance in compact packages.
FAQ
What is the maximum allowable input voltage for AP7347DQ-25FDZW-7B?
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 2.5V output, minimum input is 2.81V (2.5V + 0.31V dropout) at 500mA load - ensuring regulation during cold-crank events down to ~2.8V battery voltage.
Does AP7347DQ-25FDZW-7B 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. This discharges output capacitance without external components, reducing BOM count and PCB area - critical for space-constrained automotive modules.
Can AP7347DQ-25FDZW-7B be used with ceramic output capacitors smaller than 1µF?
Yes - the regulator is stable with 1µF ceramic capacitors, but lower values (e.g., 0.47µF) may degrade load transient response and phase margin. Diodes specifies 1µF as the minimum for guaranteed stability across temperature and process variation; using smaller values requires validation per application-specific step-load profiles.
How does the NC pin function in the W-DFN2020-6 package?
Pins 2 and 5 are internally unconnected. Diodes recommends tying them to GND to maximize thermal conduction through the package sidewalls and improve EMI shielding. Leaving them floating has no electrical impact but reduces thermal performance by ~8°C/W junction-to-ambient in high-power scenarios.
AP7347DQ-25FDZW-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- W-DFN2020-6 (SWP) (Type A1)
AP7347DQ-25FDZW-7B FAQ
1.How can I place an order for AP7347DQ-25FDZW-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-25FDZW-7B 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-25FDZW-7B reliable?
The price and inventory of AP7347DQ-25FDZW-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347DQ-25FDZW-7B is usually 5 days.
3.What payment methods are accepted for AP7347DQ-25FDZW-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-25FDZW-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-25FDZW-7B?
AP7347DQ-25FDZW-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-25FDZW-7B 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-25FDZW-7B?
For technical support, including AP7347DQ-25FDZW-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-25FDZW-7B requirements.
6.How does Aetrix verify that AP7347DQ-25FDZW-7B is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-25FDZW-7B 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-25FDZW-7B meets industry standards.
7.What is the process for return or replacement of AP7347DQ-25FDZW-7B?
All AP7347DQ-25FDZW-7B units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-25FDZW-7B, 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-25FDZW-7B part is unused and in its original packaging.
Return procedure for AP7347DQ-25FDZW-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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