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Diodes Incorporated AP7347DQ-22FDZW-7
- Part No.:
- AP7347DQ-22FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347DQ-22FDZW-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-22FDZW-7 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 2.2V 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 operates from 1.7V to 5.5V input and features enable control, thermal shutdown, short-circuit protection, and auto-discharge functionality - deployed in ADAS camera power rails and infotainment domain controllers.
For engineers reviewing the AP7347DQ-22FDZW-7 datasheet, AP7347DQ-22FDZW-7 pinout, AP7347DQ-22FDZW-7 application, or AP7347DQ-22FDZW-7 equivalent, key selection criteria include its WDFN2020-6 wettable flank package, 0.32V max dropout at 500mA (for VOUT = 2.2V), -40°C to +125°C ambient operation, and integrated EN-controlled shutdown with <1µA standby current.
Technical Context
The AP7347DQ-22FDZW-7 implements a CMOS-based LDO architecture with internal voltage reference, error amplifier, current-limit circuitry, and thermal shutdown. Its fixed 2.2V output is achieved via on-chip resistor network, eliminating external feedback components.
It supports fast transient response for load steps up to 500mA, delivers 75dB ripple rejection at 1kHz, and integrates an N-channel auto-discharge switch (30Ω typical) activated during shutdown to rapidly discharge VOUT. The device meets IATF 16949 manufacturing requirements and AEC-Q100 Grade 1 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.2V ±1% - eliminates need for external resistive divider; ensures stable core logic supply in automotive microcontrollers. |
| Max Output Current | 500mA - sufficient to power dual-core MCU cores, CAN transceivers, or image sensor analog blocks without external boost stages. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding infotainment SoCs or RF modules. |
| Output Noise | 60µVrms (10Hz–100kHz) - enables clean power for high-resolution ADCs, PLLs, and RF front-ends in ADAS cameras. |
| Dropout Voltage | 0.32V max at 500mA - allows operation from 2.52V input, supporting battery-sourced rails down to 2.7V with margin. |
| Quiescent Current | 60µA typical - minimizes standby power loss in always-on vehicle networks (e.g., body control modules). |
| Enable Threshold | VEN(H) ≥ 1.25V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIOs; no level-shifting required for MCU control. |
| Thermal Shutdown | 170°C threshold with 20°C hysteresis - protects against sustained overload in sealed ECU enclosures without external thermal monitoring. |
Pinout & Package
AP7347DQ-22FDZW-7 uses the W-DFN2020-6 (SWP) wettable flank package (2.0mm × 2.0mm, 0.75mm height), optimized for automated optical inspection (AOI) and high-density automotive PCB layouts. Exposed pad enhances thermal dissipation (θJA = 54°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.2V output - connect directly to load; requires 1µF ceramic capacitor placed adjacent to pin for stability. |
| 2, 5 | NC | No-connect terminals - internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding. |
| 3 | GND | Power ground reference - must be connected to low-impedance PCB ground plane; shared return path for VIN, VOUT, and EN. |
| 4 | EN | Active-high enable - drives regulator ON when ≥1.25V; pulls VOUT to 0V and activates auto-discharge when ≤0.5V. |
| 6 | VIN | Input power rail (1.7–5.5V) - requires 1µF decoupling capacitor placed within 2mm of pin to suppress supply glitches. |
| EP | Exposed Pad | Thermal interface - must be soldered to large copper pour tied to GND for junction-to-board heat transfer; not electrically functional. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for -40°C to +125°C ambient operation - certified for engine bay and ADAS ECU deployment without derating. |
| Auto-Discharge Function | 30Ω N-channel switch activated during shutdown - discharges VOUT to <100mV within 100µs, preventing latch-up in downstream logic. |
| Low-Noise CMOS Architecture | 60µVrms noise floor - avoids post-regulation filtering for noise-sensitive analog circuits like camera ISP power domains. |
| Wettable Flank Package | W-DFN2020-6 (FDZW) - enables reliable AOI detection of solder joint integrity on automotive production lines. |
| High PSRR at Low Frequencies | 75dB @ 1kHz - rejects ripple from buck converter switching frequencies (e.g., 500kHz fundamental harmonics) before they couple into sensitive loads. |
| Ultra-Low Quiescent Current | 60µA typical - reduces parasitic drain on 12V battery during vehicle sleep mode, extending key-off duration beyond 30 days. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
Use Scenario: Powering audio DSPs, touch controller SoCs, and display timing controllers in head-unit systems. IC Role / Device Role / Timing Role: Primary 2.2V LDO supplying core logic and I/O banks of multimedia processors requiring tight voltage regulation and low noise. Use Value: Eliminates need for discrete RC filters; maintains <±1% output accuracy across temperature and load, ensuring consistent audio codec performance. |
Use Scenario: Supplying VCOs, LNA bias rails, and RF transceiver analog sections in cellular/V2X telematics modules. IC Role / Device Role / Timing Role: Clean 2.2V bias source for RF signal chains where phase noise and spurious emissions are critical. Use Value: 60µVrms noise and 75dB PSRR prevent AM modulation of local oscillator signals, preserving EVM and ACLR compliance. |
| Cameras | Automotive POL in ADAS |
Use Scenario: Providing regulated 2.2V to image sensor analog front-ends and ISP power domains in surround-view and driver-monitoring cameras. IC Role / Device Role / Timing Role: Point-of-load regulator delivering stable analog supply independent of main domain rail fluctuations. Use Value: Fast load transient response (<10µs settling) prevents pixel corruption during rapid scene brightness changes. |
Use Scenario: Local regulation for radar processor I/O banks and CAN FD transceivers in forward collision warning ECUs. IC Role / Device Role / Timing Role: Secondary LDO fed from 5V domain rail, providing isolated, low-noise 2.2V for safety-critical communication interfaces. Use Value: AEC-Q100 qualification and thermal shutdown ensure functional safety compliance per ISO 26262 ASIL-B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74901DRVR | 2.2V fixed, 500mA, 70dB PSRR @ 1kHz, 40µVrms noise, but only industrial grade (-40°C to +85°C); no AEC-Q100 qualification. | Lacks automotive qualification and thermal shutdown hysteresis - unsuitable for under-hood or safety-critical ADAS use. | Select only for non-automotive industrial applications where cost is prioritized over qualification and thermal robustness. |
| MCP1826T-2.202E/DB | 2.2V fixed, 500mA, ±2% accuracy, 65dB PSRR @ 1kHz, 120µVrms noise, AEC-Q100 Grade 2 (–40°C to +105°C), no auto-discharge. | Higher output noise and looser accuracy reduce suitability for RF and high-speed imaging; missing discharge function increases system wake-up latency. | Acceptable for cost-sensitive body electronics where 105°C ambient suffices and fast VOUT discharge is unnecessary. |
Compared with TPS74901DRVR and MCP1826T-2.202E/DB, the AP7347DQ-22FDZW-7 uniquely combines AEC-Q100 Grade 1 qualification, 60µVrms noise, ±1% accuracy, and integrated auto-discharge - making it the only option qualified for demanding ADAS camera and radar POL applications requiring full temperature range and fast state transitions.
Availability
AP7347DQ-22FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, RF telematics units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP7347DQ-22FDZW-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 solutions for automotive, industrial, and consumer markets, with IATF 16949-certified facilities.
The AP7347DQ series is part of Diodes' automotive-qualified LDO portfolio, designed specifically for noise-sensitive point-of-load regulation in ADAS, infotainment, and vehicle networking systems requiring AEC-Q100 compliance and high-reliability packaging.
FAQ
What is the minimum input voltage required for AP7347DQ-22FDZW-7 to maintain regulation at 500mA load?
The minimum input voltage is calculated as VOUT + VDROP = 2.2V + 0.32V = 2.52V. At 500mA load and 25°C, the device sustains regulation down to 2.52V input; below this, output voltage drops >2% from nominal. Input must remain ≥1.7V for basic functionality, but regulation requires ≥2.52V under full load.
Does AP7347DQ-22FDZW-7 require external capacitors, and what are the recommended values?
Yes - a 1µF ceramic capacitor is required between VIN and GND, and another 1µF ceramic capacitor between VOUT and GND. Both must be placed within 2mm of their respective pins. For high-dynamic loads (e.g., burst-mode image sensors), adding a 10µF low-ESR tantalum or polymer capacitor in parallel with the 1µF ceramic improves transient response without compromising stability.
How does the auto-discharge feature operate, and what is its resistance value?
When EN is pulled low, the internal N-channel MOSFET connects VOUT to GND through a typical on-resistance of 30Ω. This discharges a 1µF output capacitor from 2.2V to <100mV in under 100µs. The discharge path is active only during shutdown and does not affect normal regulation - no external components are needed to implement this function.
Is AP7347DQ-22FDZW-7 compatible with lead-free reflow profiles, and what is its moisture sensitivity level?
Yes - it is fully RoHS-compliant, halogen-free, and rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to reflow. The matte tin-plated terminations support standard Pb-free SAC305 reflow profiles with peak temperatures up to 260°C.
AP7347DQ-22FDZW-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):
- 2.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.42V @ 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-22FDZW-7 FAQ
1.How can I place an order for AP7347DQ-22FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-22FDZW-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-22FDZW-7 reliable?
The price and inventory of AP7347DQ-22FDZW-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-22FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-22FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-22FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-22FDZW-7?
AP7347DQ-22FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-22FDZW-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-22FDZW-7?
For technical support, including AP7347DQ-22FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-22FDZW-7 requirements.
6.How does Aetrix verify that AP7347DQ-22FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-22FDZW-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-22FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-22FDZW-7?
All AP7347DQ-22FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-22FDZW-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-22FDZW-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-22FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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