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Diodes Incorporated AP7347DQ-22FDZW-7B
- Part No.:
- AP7347DQ-22FDZW-7B
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347DQ-22FDZW-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-22FDZW-7B from Diodes Incorporated is an automotive-grade 500mA low-dropout linear regulator with fixed 2.2V 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-22FDZW-7B datasheet, AP7347DQ-22FDZW-7B pinout, AP7347DQ-22FDZW-7B application, or AP7347DQ-22FDZW-7B equivalent, key selection criteria include AEC-Q100 qualification, WDFN2020-6 wettable flank package for solder joint inspection, 0.45V typical dropout at 500mA (for VOUT=2.2V), and integrated EN-controlled shutdown with <1µA standby current.
Technical Context
The AP7347DQ-22FDZW-7B implements a CMOS-based LDO architecture with internal voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its fixed 2.2V output is set by an on-die resistor network, eliminating external feedback components.
It supports automotive ambient operation from −40°C to +125°C with junction temperature up to +150°C, and includes active discharge via an internal N-channel MOSFET (30Ω typical RON) when disabled. The device achieves 75dB ripple rejection at 1kHz and maintains stability with only 1µF ceramic input/output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.2V ±1% over −40°C to +125°C - ensures stable core supply for 2.2V logic or analog sensors without external resistors. |
| Max Output Current | 500mA continuous - supports high-current 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) - minimizes phase noise in VCOs and jitter in high-speed serial links. |
| Quiescent Current | 60µA typical - enables always-on monitoring functions while meeting automotive low-power sleep mode requirements. |
| Dropout Voltage | 0.45V typical at 500mA (VOUT=2.2V) - allows operation from 2.65V input, compatible with partially discharged 3.3V rail or battery-backed supplies. |
| Enable Threshold | VEN(H) ≥1.25V, VEN(L) ≤0.5V - compatible with 1.8V/3.3V GPIOs for precise system-level power sequencing. |
Pinout & Package
AP7347DQ-22FDZW-7B uses the W-DFN2020-6 (SWP) wettable flank package (2.0mm × 2.0mm, 0.75mm height), optimized for automated optical inspection (AOI) of solder joints and high thermal performance (θJA = 54°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.2V output - connect directly to load with local 1µF ceramic capacitor; trace width must support 500mA continuous current. |
| 2, 5 | NC | No-connect pins - recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| 3 | GND | Power ground reference - must be connected to low-impedance PCB ground plane; shared with exposed pad for thermal path. |
| 4 | EN | Active-high enable - drives regulator ON/OFF; requires clean logic-level signal; floating state disables output. |
| 6 | VIN | Input supply (1.7V–5.5V) - place 1µF ceramic capacitor within 2mm of this pin and GND to suppress high-frequency noise. |
| EP | Exposed Pad | Thermal and electrical connection to GND - must be soldered to large copper area (≥40mm²) for junction-to-board heat transfer. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C ambient operation - meets automotive reliability and change-control requirements for safety-critical ECUs. |
| Auto-discharge function | 30Ω internal N-MOSFET discharges VOUT to GND when EN = low - prevents residual voltage from interfering with downstream power-up sequencing. |
| Low-noise, high-PSRR regulation | 60µVrms noise + 75dB PSRR at 1kHz - preserves signal integrity in RF front-ends and high-resolution ADC references. |
| Wettable flank package | W-DFN2020-6 (SWP) with side-wettable leads - enables automated X-ray/AOI inspection of solder fillets for zero-defect automotive manufacturing. |
| Thermal shutdown with hysteresis | +170°C trip threshold, +20°C hysteresis - protects against sustained overload while avoiding thermal cycling during transient overloads. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powers image sensor and ISP in forward-facing ADAS camera modules operating in engine bay or bumper environments. IC Role / Device Role / Timing Role: Primary 2.2V LDO delivering clean, low-noise bias to CIS analog front-end and digital core. Use Value: 60µVrms noise prevents fixed-pattern noise in raw image data; AEC-Q100 qualification ensures field reliability under thermal cycling. |
Use Scenario: Supplies 2.2V core voltage to application processor in head-unit infotainment systems with multi-GHz clock domains. IC Role / Device Role / Timing Role: Low-noise post-regulator stabilizing switched-mode supply output for SoC core logic. Use Value: 75dB PSRR attenuates 1MHz–10MHz switching artifacts from upstream buck converter, reducing timing jitter in DDR interfaces. |
| Automotive RF Transceiver Bias | Telematics LTE/5G Modem Analog Subsystem |
Use Scenario: Provides regulated 2.2V supply to VCO, LNA, and mixer stages in automotive cellular/V2X transceivers. IC Role / Device Role / Timing Role: Ultra-low-noise analog rail generator isolating sensitive RF circuitry from noisy digital domains. Use Value: Sub-100µVrms noise floor preserves EVM performance; 0.45V dropout enables operation from partially loaded 3.3V PMIC outputs. |
Use Scenario: Powers ADC/DAC, PLL, and crystal oscillator circuits in telematics control units requiring simultaneous LTE and GNSS connectivity. IC Role / Device Role / Timing Role: Precision voltage source for timing-critical analog blocks where phase noise directly impacts GPS acquisition time. Use Value: ±1% output accuracy and <±30ppm/°C tempco ensure stable reference voltage across vehicle cabin temperature range (−40°C to +85°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73322PDBVR | 2.2V fixed, 300mA, 50µA IQ, no auto-discharge, SOT-23-5 package | Lacks AEC-Q100 qualification and wettable flank; lower current rating limits use in high-power camera ISPs | Select only for non-automotive cost-sensitive designs where 300mA suffices and AOI is not required. |
| NCP114AMX22T2G | 2.2V fixed, 300mA, 65µA IQ, AEC-Q100 Grade 2, SOT-563 package | Lower current rating and no wettable flank; thermal resistance θJA = 210°C/W vs. 54°C/W - unsuitable for sustained 500mA loads | Acceptable only for low-duty-cycle auxiliary rails; cannot replace AP7347DQ-22FDZW-7B in thermally constrained ADAS modules. |
Compared with TLV73322PDBVR and NCP114AMX22T2G, the AP7347DQ-22FDZW-7B uniquely combines 500mA capability, AEC-Q100 Grade 1, wettable flank packaging, and integrated auto-discharge - making it the only drop-in solution for thermally demanding, safety-compliant automotive LDO applications requiring 2.2V at full rated current.
Availability
AP7347DQ-22FDZW-7B is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC core supplies, and telematics RF subsystems requiring stable component supply, AEC-Q100 compliance, and wettable flank package assurance.
Supply support for AP7347DQ-22FDZW-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and automotive-qualified components.
The AP7347DQ series belongs to Diodes' automotive LDO portfolio, engineered specifically for noise-sensitive, high-temperature automotive subsystems including ADAS, infotainment, and telematics - with emphasis on AEC-Q100 compliance, thermal robustness, and manufacturability in automotive SMT lines.
FAQ
What is the maximum allowable input voltage for AP7347DQ-22FDZW-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 even for brief transients. For 2.2V output, minimum input is 2.65V to maintain regulation at 500mA (based on 0.45V typical dropout). Input voltage must remain within spec across all operating temperatures and load conditions.
Does AP7347DQ-22FDZW-7B require an external discharge resistor?
No. The device integrates an N-channel MOSFET (30Ω typical RON) between VOUT and GND that activates automatically when EN is pulled low, discharging the output capacitor without external components. This eliminates need for discrete discharge circuits and reduces BOM count in space-constrained automotive modules.
How does the W-DFN2020-6 (SWP) package improve manufacturing yield in automotive production?
The wettable flank design enables automated optical inspection (AOI) of solder fillets on all five side terminals, detecting voids, insufficient solder, or bridging - critical for zero-defect requirements in IATF 16949-certified lines. Its 54°C/W θJA also reduces thermal derating versus SOT-25, supporting higher power density in compact ECUs.
Can AP7347DQ-22FDZW-7B be used with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with 1µF ceramic capacitors, but smaller values (e.g., 0.47µF) may compromise load transient response and PSRR above 100kHz. Diodes specifies 1µF as minimum for guaranteed stability across temperature and process variation; using smaller caps requires validation per application-specific transient and noise requirements.
AP7347DQ-22FDZW-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):
- 2.2V
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- W-DFN2020-6 (SWP) (Type A1)
AP7347DQ-22FDZW-7B FAQ
1.How can I place an order for AP7347DQ-22FDZW-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-22FDZW-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-22FDZW-7B reliable?
The price and inventory of AP7347DQ-22FDZW-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-22FDZW-7B is usually 5 days.
3.What payment methods are accepted for AP7347DQ-22FDZW-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-22FDZW-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-22FDZW-7B?
AP7347DQ-22FDZW-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-22FDZW-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-22FDZW-7B?
For technical support, including AP7347DQ-22FDZW-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-22FDZW-7B requirements.
6.How does Aetrix verify that AP7347DQ-22FDZW-7B is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-22FDZW-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-22FDZW-7B meets industry standards.
7.What is the process for return or replacement of AP7347DQ-22FDZW-7B?
All AP7347DQ-22FDZW-7B units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-22FDZW-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-22FDZW-7B part is unused and in its original packaging.
Return procedure for AP7347DQ-22FDZW-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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