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Diodes Incorporated AP7347DQ-15FDZW-7B
- Part No.:
- AP7347DQ-15FDZW-7B
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347DQ-15FDZW-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-15FDZW-7B from Diodes Incorporated is an automotive-grade 1.5V fixed-output, 500mA low-dropout linear regulator with ±1% output voltage 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-15FDZW-7B datasheet, AP7347DQ-15FDZW-7B pinout, AP7347DQ-15FDZW-7B application, or AP7347DQ-15FDZW-7B equivalent, this page delivers verified package mapping (W-DFN2020-6), terminal functions, AEC-Q100 qualification status, thermal resistance (θJA = 54°C/W), and validated automotive use cases - all extracted from Diodes' official DS42799 Rev. 5-2 datasheet.
Technical Context
The AP7347DQ-15FDZW-7B employs a CMOS-based LDO architecture with integrated voltage reference, error amplifier, current limit circuit, and NMOS pass transistor. Its fixed 1.5V output is set by an internal resistor network, eliminating external feedback components.
It supports 1.7V to 5.5V input range, achieves dropout as low as 0.55V at 500mA (for VOUT ≥ 1.4V), and includes active auto-discharge via a 30Ω on-resistance N-channel switch when disabled - critical for rapid output discharge in safety-critical automotive sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% - ensures stable core supply for 1.5V logic or interface ICs without external resistors. |
| Max Output Current | 500mA - sufficient for powering single-core microcontrollers or sensor signal chains in ADAS cameras. |
| PSRR | 75dB at 1kHz - suppresses ripple from noisy switching supplies upstream, preserving RF receiver sensitivity. |
| Output Noise | 60µVrms (10Hz–100kHz) - enables clean analog/RF power domains where noise-induced jitter or SNR degradation must be minimized. |
| Quiescent Current | 60µA typical - extends battery runtime in always-on automotive modules during sleep mode. |
| Dropout Voltage | 0.55V max at 500mA (1.4V ≤ VOUT < 1.7V) - maintains regulation down to VIN = 2.05V, supporting wide-input battery-supplied systems. |
| Enable Threshold | VEN(H) ≥ 1.25V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIOs for precise power sequencing control. |
| Thermal Shutdown | 170°C threshold with 20°C hysteresis - prevents thermal runaway during sustained overload or poor PCB heatsinking. |
Pinout & Package
AP7347DQ-15FDZW-7B uses the W-DFN2020-6 (SWP) wettable flank package (2.0mm × 2.0mm × 0.75mm), optimized for automated optical inspection (AOI) and high-density automotive PCB layouts. The exposed pad (EP) must be connected to GND or large copper area for thermal dissipation (θJC = 20°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 1.5V output - connect directly to load with low-impedance ceramic capacitor (≥1µF) placed adjacent to pin. |
| 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 routed to low-impedance ground plane; shared with EP for optimal thermal performance. |
| 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 decoupling capacitor placed within 2mm of pin. |
| EP | Exposed Pad | Thermal and mechanical anchor - not electrically functional alone; must be soldered to ≥100mm² GND copper for θJA = 54°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Rated for -40°C to +125°C ambient operation - meets automotive reliability and change-control requirements for front-end camera modules. |
| Auto-discharge function | 30Ω NMOS discharge path activated at EN low - discharges VOUT to <0.1V within 100µs, preventing back-powering of upstream circuits. |
| Low-noise, high-PSRR design | 60µVrms noise + 75dB PSRR at 1kHz - eliminates need for additional LC filtering in RF supply rails for GNSS or cellular modems. |
| Wettable flank package | W-DFN2020-6 (SWP) - enables 100% solder joint inspection via AOI, reducing field failure risk in safety-critical automotive production. |
| Ultra-low quiescent current | 60µA typical - allows integration into always-on domains (e.g., parking camera wake-on-motion) without compromising battery drain budgets. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Core Rail |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and MIPI CSI-2 interface in forward-facing driver assistance camera. IC Role / Device Role / Timing Role: Primary 1.5V LDO delivering clean, sequenced power with fast enable/disable response (<10µs turn-on). Use Value: 60µVrms noise prevents pixel-level artifacts; auto-discharge avoids ISP latch-up during system reset. |
Use Scenario: Supplies 1.5V core voltage to audio DSP and touch controller in head-unit infotainment system. IC Role / Device Role / Timing Role: Secondary LDO post-regulator after buck converter, providing low-noise bias for analog audio paths. Use Value: 75dB PSRR rejects switching noise from 2MHz DC-DC converter, preserving THD+N < 0.01% in audio playback. |
| Automotive Wireless Communication | Automotive RF Front-End Bias |
|
Use Scenario: Powers Bluetooth LE or Wi-Fi 6 transceiver SoC in telematics control unit (TCU). IC Role / Device Role / Timing Role: Enable-controlled 1.5V rail enabling low-power sleep/wake cycles synchronized with host MCU. Use Value: 60µA IQ reduces average current draw in deep-sleep mode; wettable flanks ensure solder joint reliability over 15-year vehicle life. |
Use Scenario: Provides ultra-low-noise 1.5V bias to LNA and mixer stages in GNSS receiver module. IC Role / Device Role / Timing Role: Dedicated low-noise LDO isolating RF analog section from digital supply noise. Use Value: 60µVrms output noise prevents phase noise degradation in 1.575GHz GPS carrier, maintaining C/N0 > 42dB-Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74701DRCR (TI) | 1.5V fixed, 500mA, 50µVrms noise, but no auto-discharge; θJA = 100°C/W in 10-pin WSON. | Lacks integrated discharge path - requires external MOSFET for VOUT bleed, increasing BOM count and layout complexity. | Prefer AP7347DQ-15FDZW-7B when auto-discharge is required for functional safety compliance (e.g., ISO 26262 ASIL-B sequencing). |
| NCP114AMX15T2G (onsemi) | 1.5V fixed, 300mA, ±2% accuracy, 120µVrms noise, AEC-Q100 Grade 2, SOT-563 package. | Lower current rating and higher noise - insufficient for 500mA ISP loads; larger package footprint than W-DFN2020-6. | Choose AP7347DQ-15FDZW-7B for higher current, tighter accuracy, lower noise, and smaller wettable-flank package in space-constrained ADAS modules. |
Compared with TPS74701DRCR and NCP114AMX15T2G, the AP7347DQ-15FDZW-7B uniquely combines AEC-Q100 Grade 1 qualification, integrated auto-discharge, 60µVrms noise, and W-DFN2020-6 packaging - making it the only drop-in solution for 1.5V/500mA automotive LDO applications requiring both functional safety sequencing and RF-grade cleanliness.
Availability
AP7347DQ-15FDZW-7B is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment core rails, and wireless communication subsystems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AP7347DQ-15FDZW-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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing certified to IATF 16949 and AEC-Q100 test standards.
The AP7347DQ series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, safety-critical power domains in ADAS, infotainment, and telematics systems.
FAQ
What is the maximum allowable input voltage for AP7347DQ-15FDZW-7B?
The absolute maximum input voltage is 6.0V per the datasheet's Absolute Maximum Ratings table. However, the recommended operating range is 1.7V to 5.5V. Exceeding 5.5V may trigger overvoltage protection or cause permanent damage, especially under high ambient temperatures where thermal derating applies.
Does AP7347DQ-15FDZW-7B require an external pull-up on the EN pin?
No external pull-up is required. When unused, the EN pin must be tied directly to VIN to maintain regulation - not to a resistor divider or weak pull-up. Floating EN is prohibited and will cause unpredictable startup/shutdown behavior due to internal leakage paths and noise susceptibility.
How does the auto-discharge function operate during shutdown?
When EN is pulled below 0.5V, the internal 30Ω NMOS switch connects VOUT to GND, discharging the output capacitor. Typical discharge time to <0.1V is under 100µs for a 1µF COUT. This prevents back-powering of upstream circuitry and satisfies ISO 26262 power-rail sequencing requirements for ASIL-B systems.
Can AP7347DQ-15FDZW-7B be used outside automotive applications?
Yes - its electrical specs (e.g., 60µA IQ, 60µVrms noise, 75dB PSRR) are valuable in industrial IoT sensors and medical portable devices. However, the AEC-Q100 qualification, PPAP documentation, and IATF 16949 manufacturing are specific to automotive; non-automotive users should verify suitability for their reliability and qualification needs.
AP7347DQ-15FDZW-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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.66V @ 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-15FDZW-7B FAQ
1.How can I place an order for AP7347DQ-15FDZW-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-15FDZW-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-15FDZW-7B reliable?
The price and inventory of AP7347DQ-15FDZW-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-15FDZW-7B is usually 5 days.
3.What payment methods are accepted for AP7347DQ-15FDZW-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-15FDZW-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-15FDZW-7B?
AP7347DQ-15FDZW-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-15FDZW-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-15FDZW-7B?
For technical support, including AP7347DQ-15FDZW-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-15FDZW-7B requirements.
6.How does Aetrix verify that AP7347DQ-15FDZW-7B is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-15FDZW-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-15FDZW-7B meets industry standards.
7.What is the process for return or replacement of AP7347DQ-15FDZW-7B?
All AP7347DQ-15FDZW-7B units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-15FDZW-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-15FDZW-7B part is unused and in its original packaging.
Return procedure for AP7347DQ-15FDZW-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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