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Diodes Incorporated AP7347DQ-25FDZW-7
- Part No.:
- AP7347DQ-25FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347DQ-25FDZW-7.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-7 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-7 datasheet, AP7347DQ-25FDZW-7 pinout, AP7347DQ-25FDZW-7 application, or AP7347DQ-25FDZW-7 equivalent, key selection criteria include its AEC-Q100 qualification, WDFN2020-6 wettable flank package, 0.31V typical dropout at 500mA (for VOUT = 2.5V), 60µA quiescent current, and integrated EN-controlled shutdown with <1µA standby current.
Technical Context
This CMOS-based LDO integrates a precision voltage reference, error amplifier, current-limit circuit, and NMOS pass transistor with auto-discharge capability. Its architecture supports fast load transient response (<10µs settling) and stable operation with 1µF ceramic input/output capacitors.
The device operates across 1.7V to 5.5V input range and maintains regulation down to 2.5V output with dropout as low as 0.31V at full 500mA load. Thermal shutdown activates at +170°C with +20°C hysteresis, and EN pin logic thresholds are specified at 0.5V (max low) and 1.25V (min high).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% - ensures stable core voltage for 2.5V logic or analog sensors without external feedback. |
| Max Output Current | 500mA - sufficient to power single-core microcontrollers or image signal processors in automotive cameras. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding RF or ADC circuits. |
| Output Noise | 60µVrms (10Hz–100kHz) - enables clean biasing of low-noise amplifiers and high-resolution ADCs. |
| Quiescent Current | 60µA - minimizes battery drain during vehicle sleep mode in always-on ADAS subsystems. |
| Dropout Voltage | 0.31V typ @ 500mA - allows operation from 2.8V input (e.g., post-buck rail) while maintaining 2.5V output. |
| Enable Threshold | VEN(H) ≥1.25V, VEN(L) ≤0.5V - compatible with 1.8V/3.3V GPIOs for precise system-level power sequencing. |
| Thermal Shutdown | +170°C activation with +20°C hysteresis - protects against sustained overload in sealed ECU enclosures. |
Pinout & Package
AP7347DQ-25FDZW-7 uses the W-DFN2020-6 (SWP) wettable flank package (2.0mm × 2.0mm, 0.75mm height), optimized for automated optical inspection (AOI) and thermal performance via exposed pad (EP) connection to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.5V output - connect directly to load with low-inductance path; decoupling capacitor must be placed within 2mm. |
| 2, 5 | NC | No-connect terminals - internally unconnected; recommended to tie to GND for thermal conduction and EMI reduction. |
| 3 | GND | Power ground reference - must be connected to low-impedance PCB ground plane; shared with EP for thermal dissipation. |
| 4 | EN | Active-high enable - drives regulator ON when ≥1.25V; pulls output to 0V with auto-discharge when <0.5V. |
| 6 | VIN | Input supply (1.7–5.5V) - requires local 1µF ceramic capacitor; trace width ≥0.5mm to limit IR drop under 500mA. |
| EP | Exposed Pad | Thermal interface - must be soldered to ≥100mm² copper area tied to GND; not electrically functional as ground node. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for -40°C to +125°C ambient operation - meets automotive ECU reliability requirements without derating. |
| Auto-discharge on shutdown | 30Ω internal N-channel discharge path - clears VOUT within 100µs after EN deactivation, preventing back-powering. |
| Low-noise CMOS architecture | 60µVrms noise floor - eliminates need for additional LC filtering in RF supply chains (e.g., GNSS receivers). |
| Wettable flank package | W-DFN2020-6 (SWP) - enables AOI-compatible solder joint inspection and improves thermal resistance (θJA = 54°C/W). |
| Ultra-low IQ | 60µA operating / 0.01µA standby - extends battery life in parking-mode camera systems with periodic wake-up. |
| Integrated short-circuit protection | 180mA fold-back current limit - prevents thermal runaway during VOUT-to-GND faults without external components. |
Applications
| ADAS Camera Power | Infotainment SoC Core Rail |
|---|---|
|
Use Scenario: Powering 2.5V image sensor and ISP in forward-facing driver assistance camera. IC Role / Device Role / Timing Role: Primary low-noise post-regulator supplying clean 2.5V to analog front-end and digital core. Use Value: 60µVrms noise and 75dB PSRR prevent switching artifacts in captured video; auto-discharge avoids sensor latch-up during rapid system reset. |
Use Scenario: Providing stable 2.5V core voltage to application processor in head-unit infotainment system. IC Role / Device Role / Timing Role: Secondary LDO for processor I/O or memory interface rail, enabled synchronously with main power tree. Use Value: 500mA capacity supports burst-mode CPU loads; ±1% accuracy ensures timing margin compliance for DDR interfaces. |
| Automotive Wireless Modem Supply | RF Front-End Biasing |
|
Use Scenario: Powering LTE/V2X communication module requiring low-noise 2.5V supply in telematics control unit. IC Role / Device Role / Timing Role: Dedicated LDO for modem baseband IC, isolated from noisy DC/DC converter outputs. Use Value: 75dB PSRR at 1kHz rejects ripple from 2MHz buck converters; 60µA IQ reduces idle power in cellular-connected ECUs. |
Use Scenario: Biasing low-noise amplifier (LNA) and mixer stages in GNSS receiver front-end. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply rail decoupled from digital domains. Use Value: 60µVrms noise floor preserves receiver sensitivity; thermal shutdown protects against antenna mismatch-induced overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74525PQWDRBRQ1 | Higher 200mA max output, lower 25µVrms noise, but no auto-discharge; θJA = 60°C/W in 2mm×2mm WSON. | Limited to sub-200mA loads; lacks discharge path for fast VOUT ramp-down. | Select if ultra-low noise dominates over discharge requirement and load current ≤200mA. |
| NCP114AMX25TBG | Same 500mA rating and ±1% accuracy, but only 65dB PSRR at 1kHz and no AEC-Q100 qualification. | Not suitable for automotive production; limited to industrial or consumer use. | Choose only for cost-sensitive non-automotive designs where PSRR >70dB is not mandatory. |
Compared with TPS74525PQWDRBRQ1 and NCP114AMX25TBG, AP7347DQ-25FDZW-7 uniquely combines AEC-Q100 qualification, 500mA output, auto-discharge, and 75dB PSRR in a wettable-flank 2mm×2mm package-making it optimal for safety-critical ADAS power rails where fast shutdown and noise immunity are co-required.
Availability
AP7347DQ-25FDZW-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC core rails, and wireless telematics modems requiring stable component supply, AEC-Q100 compliance, and wettable flank package support.
Supply support for AP7347DQ-25FDZW-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.
The AP7347DQ series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, space-constrained power rails in ADAS, infotainment, and body electronics-emphasizing PSRR, low noise, and AEC-Q100 robustness.
FAQ
What is the minimum input voltage required for AP7347DQ-25FDZW-7 to regulate 2.5V output at 500mA?
The minimum input voltage is determined by dropout: 0.31V typical at 500mA, so VIN ≥ 2.5V + 0.31V = 2.81V. Absolute minimum VIN per spec is 1.7V, but regulation fails below 2.81V under full load. For guaranteed 2.5V output at 500mA, maintain VIN ≥ 2.85V with margin.
Does AP7347DQ-25FDZW-7 require an external pull-up resistor on the EN pin?
No external pull-up is required. The EN pin has no internal pull-up; however, it must not float. If always-on operation is needed, connect EN directly to VIN. For controlled enable/disable, drive EN with a GPIO capable of ≥1.25V high and ≤0.5V low-no resistor needed unless interfacing with open-drain logic.
How does the auto-discharge function operate, and what is its resistance value?
When EN is pulled low, an internal 30Ω N-channel MOSFET connects VOUT to GND, discharging output capacitance. This path clears VOUT to <100mV within 100µs for a 10µF load. The 30Ω value is specified at VIN = 4.0V and ensures rapid discharge without excessive peak current or thermal stress.
Can AP7347DQ-25FDZW-7 be used with ceramic output capacitors smaller than 1µF?
Yes-the device is stable with ≥0.47µF ceramic output capacitors per datasheet Figure 19. However, 1µF is recommended to ensure robust transient response across temperature and process variation. Capacitors <0.47µF may cause instability under heavy load transients or at temperature extremes.
AP7347DQ-25FDZW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- 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, Wettable Flank
- Supplier Device Package:
- W-DFN2020-6 (SWP) (Type A1)
AP7347DQ-25FDZW-7 FAQ
1.How can I place an order for AP7347DQ-25FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-25FDZW-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-25FDZW-7 reliable?
The price and inventory of AP7347DQ-25FDZW-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-25FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-25FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-25FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-25FDZW-7?
AP7347DQ-25FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-25FDZW-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-25FDZW-7?
For technical support, including AP7347DQ-25FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-25FDZW-7 requirements.
6.How does Aetrix verify that AP7347DQ-25FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-25FDZW-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-25FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-25FDZW-7?
All AP7347DQ-25FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-25FDZW-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-25FDZW-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-25FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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