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Diodes Incorporated AP7347DQ-12W5-7
- Part No.:
- AP7347DQ-12W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7347DQ-12W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:7,019
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Product details
Overview
AP7347DQ-12W5-7 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 1.2V 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 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-12W5-7 datasheet, AP7347DQ-12W5-7 pinout, AP7347DQ-12W5-7 application, or AP7347DQ-12W5-7 equivalent, key selection criteria include its 1.2V fixed output, SOT25 (Type A1) wettable-flank package, 0.45V typical dropout at 500mA (for VOUT ≥ 2.1V), 60µA quiescent current, and AEC-Q100 qualification for automotive ambient operation from −40°C to +125°C.
Technical Context
The AP7347DQ-12W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown logic. Its internal N-channel pass transistor enables fast load transient response and supports auto-discharge via a 30Ω on-resistance path when disabled.
It operates across 1.7V–5.5V input range with guaranteed 500mA output under worst-case dropout conditions, and maintains stability with 1µF ceramic input/output capacitors. The EN pin accepts logic-level control (VIL ≤ 0.5V, VIH ≥ 1.25V) and must not float.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% over −40°C to +125°C junction temperature |
| Max Output Current | 500mA continuous; fold-back short-circuit current limited to ~180mA |
| PSRR | 75dB at 1kHz - suppresses ripple from upstream switching regulators |
| Output Noise | 60µVrms (10Hz–100kHz) - critical for RF and high-speed ADC/DAC power domains |
| Quiescent Current | 60µA typical - enables always-on subsystems without battery drain penalty |
| Dropout Voltage | 0.42V max at 500mA for 1.2V output (measured at 2% VOUT drop) |
| Enable Threshold | VEN_H ≥ 1.25V to activate; VEN_L ≤ 0.5V to disable - compatible with 1.8V/3.3V GPIO |
Pinout & Package
SOT25 (Type A1) package: 5-pin surface-mount with wettable flanks for automated optical inspection (AOI) of solder joints. Exposed pad not present; thermal dissipation relies on PCB copper area under pins 2 (GND) and 4 (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Input power supply (1.7V–5.5V); requires 1µF ceramic decoupling capacitor placed adjacent to pin |
| 2 | GND | Power ground reference; must connect to low-impedance PCB ground plane to minimize noise coupling |
| 3 | EN | Active-high enable; floating state prohibited; tie to VIN if always-on operation required |
| 4 | NC | No internal connection; recommended to connect to GND for enhanced thermal conduction and EMI reduction |
| 5 | VOUT | Regulated 1.2V output; requires 1µF ceramic capacitor placed within 2mm of pin and GND |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation in automotive ECUs and ADAS sensors |
| Auto-discharge function | 30Ω internal N-channel path discharges VOUT rapidly upon shutdown - prevents hold-up voltage in safety-critical sequencing |
| Low-noise CMOS architecture | 60µVrms noise floor enables clean power for RF transceivers and image sensor analog front-ends |
| Thermal shutdown with hysteresis | Triggers at +170°C with +20°C hysteresis - prevents thermal cycling damage during overload events |
| Wettable flank SOT25 package | Enables AOI-compatible solder joint inspection for zero-defect automotive manufacturing |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
Use Scenario: Powering SoC I/O banks and display interface circuitry in head-unit systems. IC Role / Device Role / Timing Role: Primary LDO for 1.2V core rail with tight regulation and low noise. Use Value: Maintains ±1% output accuracy across wide temperature and load transients, preventing system lockup during cold cranking. |
Use Scenario: Supplying 1.2V bias to RF transceiver synthesizers and LNAs in telematics modules. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning switching converter ripple. Use Value: 75dB PSRR at 1kHz and 60µVrms noise ensure phase noise performance meets LTE/5G spectral mask requirements. |
| ADAS Camera Modules | Automotive Wireless Communication |
Use Scenario: Providing stable 1.2V core voltage to high-resolution CMOS image sensors and ISP processors. IC Role / Device Role / Timing Role: Load-switch-capable LDO with fast enable/disable for power-gating sensor subsystems. Use Value: 60µA quiescent current and auto-discharge reduce dark-current leakage and enable sub-100ms wake-up latency. |
Use Scenario: Powering Bluetooth/Wi-Fi SoCs in vehicle-to-everything (V2X) gateways. IC Role / Device Role / Timing Role: Always-on LDO supplying real-time clock and secure boot circuitry. Use Value: AEC-Q100 qualification and −40°C to +125°C operation guarantee reliability in under-hood gateway enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TJA1123BHN/0Z (NXP) | 1.2V output, 300mA, integrated watchdog and CAN physical layer; larger HVSON20 package | Targeted for CAN FD node power with diagnostics; lacks auto-discharge and lower PSRR (65dB @ 1kHz) | Choose when CAN bus integration and fault reporting are required; avoid if board space or noise sensitivity is critical. |
| TPS74901DRVR (TI) | 1.2V output, 500mA, 50µVrms noise, but non-automotive grade (−40°C to +125°C not AEC-Q100 qualified) | Designed for industrial/commercial use; no PPAP support or IATF 16949 traceability | Acceptable for non-safety-critical prototypes; reject for production automotive programs requiring change control and audit readiness. |
Compared with TJA1123BHN/0Z and TPS74901DRVR, the AP7347DQ-12W5-7 uniquely combines AEC-Q100 qualification, auto-discharge, wettable-flank SOT25 packaging, and 75dB PSRR - making it optimal for space-constrained, noise-sensitive automotive LDO applications where supply-chain compliance and zero-defect assembly are mandatory.
Availability
AP7347DQ-12W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera power supplies, and wireless communication modules requiring stable component supply, AEC-Q100 traceability, and wettable-flank package compatibility with AOI inspection.
Supply support for AP7347DQ-12W5-7 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 components for automotive, industrial, and computing markets.
The AP7347DQ belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive power domains in ADAS, infotainment, and telematics - emphasizing PSRR, low quiescent current, and AEC-Q100 process validation.
FAQ
What is the maximum allowable input voltage for AP7347DQ-12W5-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.5V. Operation above 5.5V risks permanent damage per Absolute Maximum Ratings. For 1.2V output, minimum input is 1.7V; typical dropout is 0.42V at 500mA, so VIN ≥ 1.62V is required for regulation - however, 1.7V ensures margin across temperature and tolerance.
Does AP7347DQ-12W5-7 require an external discharge resistor?
No. The device integrates an N-channel auto-discharge transistor (30Ω typical on-resistance) between VOUT and GND when EN is low. This eliminates need for external resistors, reduces BOM count, and ensures rapid VOUT decay (<100µs typical) - critical for power sequencing in automotive safety systems.
Can AP7347DQ-12W5-7 be used in non-automotive applications?
Yes - its electrical specifications (e.g., 60µA IQ, 75dB PSRR, 60µVrms noise) are valuable in industrial and medical systems. However, the AEC-Q100 qualification, PPAP documentation, and IATF 16949 manufacturing are specific to automotive use cases; non-automotive users benefit from the robustness but pay for automotive-grade process controls.
What is the thermal resistance (θJA) of the SOT25 package in standard JEDEC layout?
In the JEDEC STD-51 high-K board (3″×3″ multilayer, 1oz internal planes, 2oz top/bottom traces), θJA is 140°C/W for SOT25 (Type A1). Actual performance improves with larger PCB copper area connected to pins 2 (GND) and 4 (NC); thermal design must account for 0.89W max power dissipation at full load and worst-case ambient.
AP7347DQ-12W5-7 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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.8V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7347DQ-12W5-7 FAQ
1.How can I place an order for AP7347DQ-12W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-12W5-7 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-12W5-7 reliable?
The price and inventory of AP7347DQ-12W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347DQ-12W5-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-12W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-12W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-12W5-7?
AP7347DQ-12W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-12W5-7 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-12W5-7?
For technical support, including AP7347DQ-12W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-12W5-7 requirements.
6.How does Aetrix verify that AP7347DQ-12W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-12W5-7 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-12W5-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-12W5-7?
All AP7347DQ-12W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-12W5-7, 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-12W5-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-12W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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