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Diodes Incorporated AP7347DQ-22W5-7
- Part No.:
- AP7347DQ-22W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7347DQ-22W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7347DQ-22W5-7 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-22W5-7 datasheet, AP7347DQ-22W5-7 pinout, AP7347DQ-22W5-7 application, or AP7347DQ-22W5-7 equivalent, key selection criteria include AEC-Q100 qualification, SOT25 (Type A1) wettable-flank package compatibility, dropout voltage ≤420mV at 500mA (for VOUT=2.2V), EN logic thresholds (VIL≤0.5V, VIH≥1.25V), and thermal resistance (θJA=140°C/W).
Technical Context
The AP7347DQ-22W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and NMOS pass transistor with integrated auto-discharge path. Its architecture supports fast load transient response (<10µs settling) and stable operation with 1µF ceramic input/output capacitors.
It operates across 1.7V–5.5V input range, delivers regulated 2.2V output up to 500mA, and includes thermal shutdown (170°C trigger, 20°C hysteresis) and fold-back short-circuit protection (~180mA limit). The EN pin enables precise system-level power sequencing with <1µA standby leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.2V ±1% over -40°C to +125°C - ensures stable core voltage for 2.2V-tolerant automotive sensors and RF ICs. |
| Max Output Current | 500mA - sufficient to power dual-lane MIPI CSI-2 camera interfaces or low-power MCU cores in ADAS ECUs. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters in compact automotive PCBs. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets stringent noise requirements for automotive RF receivers and high-speed SerDes PHYs. |
| Quiescent Current | 60µA typical - enables always-on functionality in vehicle telematics without excessive battery drain. |
| Dropout Voltage | 420mV max at 500mA - allows operation from 2.62V input (e.g., degraded 3.3V rail), critical for cold-crank scenarios. |
| Enable Thresholds | VIL ≤ 0.5V, VIH ≥ 1.25V - compatible with 1.8V/3.3V GPIOs for deterministic power sequencing in multi-rail systems. |
Pinout & Package
SOT25 (Type A1) package: 5-pin surface-mount with wettable flanks for automated optical inspection (AOI) and enhanced solder joint reliability in automotive reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires local 1µF ceramic decoupling to suppress supply ripple and support transient load steps. |
| 2 | EN | Active-high enable; must be driven to GND or VIN - floating state causes undefined regulator behavior and potential shoot-through risk. |
| 3 | GND | Analog/digital ground reference; connects to internal die substrate and exposed pad - must tie to low-impedance PCB ground plane. |
| 4 | VOUT | Regulated 2.2V output; routed with wide trace and adjacent 1µF ceramic capacitor to minimize ESR-induced noise and improve load step response. |
| 5 | NC | No-connect terminal; internally unconnected - recommended to tie to GND for improved thermal conduction and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for -40°C to +125°C ambient operation - meets automotive electronics reliability standards for engine bay and cabin applications. |
| Auto-discharge function | 30Ω on-resistance NMOS discharge path activated during shutdown - prevents residual VOUT hold-up that could delay system reset or cause latch-up. |
| Low-noise CMOS architecture | 60µVrms noise floor with no external bypass capacitor required - eliminates need for costly noise-filtering components in space-constrained modules. |
| Thermal shutdown with hysteresis | 170°C trip point + 20°C hysteresis - prevents thermal cycling during sustained overload while allowing safe recovery after cooling. |
| Wettable flank SOT25 package | Side-wettable leads enable AOI-compatible solder joint inspection - critical for zero-defect manufacturing in Tier-1 automotive production lines. |
Applications
| ADAS Camera Power | Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powering 2.2V image sensor analog front-end and MIPI CSI-2 transmitter in forward-facing ADAS camera module. IC Role / Device Role / Timing Role: Low-noise LDO supplying clean bias voltage to analog pixel array and high-speed serial interface. Use Value: 60µVrms noise prevents fixed-pattern noise in captured images; 75dB PSRR rejects noise from nearby buck converter powering digital ISP. |
Use Scenario: Providing 2.2V core voltage to application processor in automotive head unit with Android Automotive OS. IC Role / Device Role / Timing Role: Primary post-regulator delivering stable core power during dynamic CPU/GPU load transitions. Use Value: 500mA current capability supports burst-mode processing; 420mV dropout enables operation during cold-crank when 3.3V rail dips to 2.62V. |
| Automotive RF Transceiver Supply | Telematics GNSS Front-End |
Use Scenario: Biasing 2.2V LNA and mixer stages in LTE-V2X or 5G NR automotive communication module. IC Role / Device Role / Timing Role: Ultra-low-noise local regulator isolating sensitive RF circuitry from noisy digital supply domains. Use Value: 60µVrms noise floor preserves receiver sensitivity; ±1% accuracy maintains consistent gain calibration across temperature. |
Use Scenario: Powering 2.2V GNSS RF front-end (e.g., u-blox UBX-M8030) in vehicle telematics control unit. IC Role / Device Role / Timing Role: Always-on LDO maintaining GPS signal acquisition during ignition-off monitoring mode. Use Value: 60µA quiescent current minimizes parasitic battery drain; AEC-Q100 qualification ensures 15-year field reliability. |
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, 55dB PSRR @1kHz, 30µVrms, no auto-discharge, SOT-23-5 | Lacks AEC-Q100 qualification and automotive PPAP support; lower current rating limits use in multi-sensor camera modules. | Select only for non-automotive industrial designs where cost is prioritized over automotive compliance and 500mA headroom. |
| NCP114AMX220TBG | 2.2V fixed, 300mA, 70dB PSRR @1kHz, 45µVrms, no EN pin, SOT-23-5 | Missing enable control prevents power sequencing; not AEC-Q100 qualified; insufficient current for dual-lane MIPI loads. | Use only in legacy automotive sub-systems where enable functionality is absent and load current remains below 300mA. |
Compared with TLV73322PDBVR and NCP114AMX220TBG, the AP7347DQ-22W5-7 uniquely combines AEC-Q100 Grade 1 qualification, 500mA output, auto-discharge, and wettable-flank packaging - making it the only drop-in solution for new ADAS camera and telematics designs requiring full automotive production compliance.
Availability
AP7347DQ-22W5-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC core rails, RF transceiver biasing, and telematics GNSS front-ends requiring stable component supply under IATF 16949-controlled logistics.
Supply support for AP7347DQ-22W5-7 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 solutions for automotive, industrial, computing, and consumer markets.
The AP7347DQ belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive power domains in ADAS, infotainment, and vehicle connectivity systems where AEC-Q100 compliance and thermal robustness are mandatory.
FAQ
What is the maximum allowable input voltage for AP7347DQ-22W5-7?
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 2.62V (accounting for 420mV max dropout at 500mA), ensuring regulation during cold-crank conditions down to ~2.6V.
Does AP7347DQ-22W5-7 require an external discharge resistor?
No. The device integrates an NMOS auto-discharge switch (30Ω typical on-resistance) between VOUT and GND, activated automatically when EN is pulled low. This eliminates the need for external resistors, reduces BOM count, and ensures rapid VOUT decay (<1ms) to prevent back-powering of upstream circuitry during shutdown.
Can AP7347DQ-22W5-7 be used with ceramic output capacitors smaller than 1µF?
Yes - the regulator is stable with 1µF ceramic capacitors, but smaller values (e.g., 0.47µF) may degrade load transient response and increase output voltage deviation. Diodes specifies 1µF as the minimum for guaranteed stability across temperature and process variation; using smaller capacitors requires validation per application-specific load step profiles.
Is the NC pin on AP7347DQ-22W5-7 required to be grounded?
While not electrically required, Diodes recommends connecting the NC pin to GND to maximize PCB copper area for thermal dissipation. This improves θJA performance by enhancing heat transfer from the die through the lead frame, especially critical in sealed automotive enclosures where ambient temperatures exceed 105°C.
AP7347DQ-22W5-7 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):
- 2.2V
- 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
- Supplier Device Package:
- SOT-25
AP7347DQ-22W5-7 FAQ
1.How can I place an order for AP7347DQ-22W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-22W5-7 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-22W5-7 reliable?
The price and inventory of AP7347DQ-22W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347DQ-22W5-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-22W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-22W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-22W5-7?
AP7347DQ-22W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-22W5-7 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-22W5-7?
For technical support, including AP7347DQ-22W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-22W5-7 requirements.
6.How does Aetrix verify that AP7347DQ-22W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-22W5-7 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-22W5-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-22W5-7?
All AP7347DQ-22W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-22W5-7, 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-22W5-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-22W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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