My Inquiry
My Account
Diodes Incorporated AP7347DQ-28FDZW-7
- Part No.:
- AP7347DQ-28FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347DQ-28FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7347DQ-28FDZW-7 from Diodes Incorporated is an automotive-grade 500mA low-dropout linear regulator with fixed 2.8V output, ±1% accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It features enable control, thermal shutdown, short-circuit protection, and auto-discharge functionality, housed in a wettable W-DFN2020-6 package for high-density automotive PCB layouts.
For engineers reviewing the AP7347DQ-28FDZW-7 datasheet, AP7347DQ-28FDZW-7 pinout, AP7347DQ-28FDZW-7 application, or AP7347DQ-28FDZW-7 equivalent, key selection criteria include AEC-Q100 qualification, 60µA quiescent current, 0.32V max dropout at 500mA (for VOUT ≥ 4.0V), -40°C to +125°C operating ambient range, and compatibility with 1µF ceramic input/output capacitors.
Technical Context
The AP7347DQ-28FDZW-7 employs a CMOS-based LDO architecture with integrated voltage reference, error amplifier, current-limit circuitry, and thermal shutdown. Its enable input supports active-high logic control with defined 0–0.5V low and 1.25–5.5V high thresholds, and internal auto-discharge uses a 30Ω N-channel MOSFET when disabled.
Designed for noise-sensitive automotive subsystems, it delivers stable 2.8V regulation across 1.7V–5.5V input range with load transient response optimized for ADAS camera modules and RF power supplies. The W-DFN2020-6 package provides θJA = 54°C/W and θJC = 20°C/W, enabling efficient thermal dissipation via exposed pad connection to ground plane.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±1% - ensures precise biasing for 2.8V logic rails and analog sensors in automotive infotainment. |
| Max Output Current | 500mA - supports power delivery to multi-rail camera ISPs and RF transceivers without external boost stages. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters in shared power domains. |
| Output Noise | 60µVrms (10Hz–100kHz) - minimizes phase jitter in RF synthesizers and ADC reference paths. |
| Quiescent Current | 60µA typical - extends battery runtime in always-on vehicle modules during sleep mode. |
| Dropout Voltage | 0.32V max at 500mA - enables operation from 3.12V minimum input, compatible with 3.3V system rails under droop. |
| Operating Temp | -40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and cabin-mounted ECUs. |
| Enable Threshold | VIL ≤ 0.5V, VIH ≥ 1.25V - interfaces directly with 3.3V or 5V microcontroller GPIO without level-shifting. |
Pinout & Package
AP7347DQ-28FDZW-7 is packaged in a 2.0mm × 2.0mm W-DFN2020-6 (SWP) wettable flanks package with exposed thermal pad (EP). The compact footprint supports high-density automotive PCB layouts and automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.8V output - connect to local 1µF ceramic capacitor within 2mm of pin for stability and transient response. |
| 2, 5 | NC | No-connect terminals - recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| 3 | GND | Power ground reference - must be connected to solid ground plane; shortest possible trace to minimize noise coupling. |
| 4 | EN | Active-high enable - driven by MCU GPIO; floating state disables regulator; 1µA max leakage prevents unintended turn-on. |
| 6 | VIN | Input supply (1.7–5.5V) - requires 1µF ceramic decoupling capacitor placed adjacent to pin to suppress supply glitches. |
| EP | Exposed Pad | Thermal interface - connect to large copper area tied to GND for θJA = 54°C/W performance; not electrically functional as GND. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities - suitable for safety-critical ADAS and infotainment systems. |
| Low-Noise Regulation | 60µVrms output noise over 10Hz–100kHz - preserves signal integrity in camera image sensors and RF front-end biasing. |
| High PSRR | 75dB at 1kHz - rejects ripple from upstream buck converters powering multiple subsystems on shared 5V rail. |
| Auto-Discharge | 30Ω internal N-channel FET discharges VOUT when EN = low - prevents residual voltage hold-up in hot-swap or power-sequence-critical modules. |
| Wettable Flank Package | W-DFN2020-6 (SWP) with solderable side walls - enables reliable AOI and X-ray inspection for zero-defect automotive manufacturing. |
| Thermal Protection | +170°C shutdown threshold with +20°C hysteresis - prevents latch-up during sustained overload or ambient temperature excursions. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
Use Scenario: Powering display controllers, audio codecs, and touch processors in head-unit systems. IC Role / Device Role / Timing Role: Primary 2.8V LDO delivering clean, regulated voltage to noise-sensitive digital logic and analog interfaces. Use Value: ±1% output accuracy maintains timing margin for DDR memory interfaces; 60µVrms noise prevents audible artifacts in Class D amplifiers. |
Use Scenario: Biasing VCOs, LNAs, and PA drivers in cellular/V2X communication modules. IC Role / Device Role / Timing Role: Low-noise local regulator supplying RF ICs requiring stable 2.8V reference independent of main 5V rail ripple. Use Value: 75dB PSRR isolates RF synthesizer phase noise from switching converter harmonics; fast load transient response prevents PLL unlock events. |
| Cameras | Automotive POL in ADAS |
Use Scenario: Powering CMOS image sensors and ISP SoCs in surround-view and driver-monitoring cameras. IC Role / Device Role / Timing Role: Point-of-load regulator providing 2.8V core voltage with minimal EMI impact on pixel readout circuits. Use Value: 500mA output sustains burst-mode sensor operation; auto-discharge ensures rapid power-down between frames to reduce dark current. |
Use Scenario: Local regulation for radar processor cores and CAN FD transceivers in forward collision warning systems. IC Role / Device Role / Timing Role: AEC-Q100-compliant LDO delivering fault-tolerant 2.8V supply with thermal foldback and short-circuit protection. Use Value: -40°C to +125°C operation ensures reliability in engine-bay-mounted radar units; 60µA IQ extends battery backup duration during ignition-off monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS74901DRCR | 300mA output, 50µVrms noise, 70dB PSRR, SOT-23-6 package, no auto-discharge | Limited to lower-current applications; lacks wettable flanks and AEC-Q100 qualification | Select only for non-automotive prototypes where 500mA and automotive compliance are not required. |
| NCP1117ST28T3G | 1A output, 1.2V dropout at 800mA, ±2% accuracy, TO-220/SOT-223, no enable or auto-discharge | Higher dropout and larger footprint; unsuitable for space-constrained ADAS modules | Use only in cost-sensitive industrial designs where thermal performance and board area are secondary concerns. |
Compared with TPS74901DRCR and NCP1117ST28T3G, the AP7347DQ-28FDZW-7 uniquely combines AEC-Q100 qualification, 500mA capability in a 2×2mm wettable package, auto-discharge, and sub-60µVrms noise-making it the only drop-in solution for next-generation automotive camera and RF POL designs requiring zero-defect manufacturability.
Availability
AP7347DQ-28FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, RF communication subsystems, and body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP7347DQ-28FDZW-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 series belongs to Diodes' automotive-qualified LDO portfolio, designed specifically to meet stringent AEC-Q100 requirements for noise-sensitive point-of-load regulation in ADAS, infotainment, and telematics systems.
FAQ
What is the maximum allowable input voltage for AP7347DQ-28FDZW-7?
The absolute maximum input voltage is 6.0V per the datasheet Absolute Maximum Ratings table. Operation above this value risks permanent damage. For reliable continuous operation, the recommended maximum input is 5.5V, which aligns with the specified wide VIN range of 1.7V to 5.5V under Recommended Operating Conditions.
Does AP7347DQ-28FDZW-7 require an external discharge resistor?
No. The device integrates an internal 30Ω N-channel MOSFET that automatically discharges the output capacitor when the EN pin is pulled low. This eliminates the need for external discharge circuitry, reducing BOM count and PCB area while ensuring controlled power-down sequencing in automotive applications.
Can AP7347DQ-28FDZW-7 be used with ceramic output capacitors smaller than 1µF?
Yes-the AP7347DQ is stable with very small ceramic output capacitors, including values below 1µF. However, the datasheet recommends ≥1µF for optimal transient response and stability across full load and temperature ranges. Using smaller capacitors may degrade load step recovery time and increase output voltage deviation under dynamic conditions.
Is the exposed pad (EP) of the W-DFN2020-6 package electrically connected to ground?
No. The exposed pad is thermally conductive but not electrically connected to any internal node. It must be connected to a large PCB copper area tied to GND for thermal dissipation, but it should not serve as the sole GND return path. Electrical grounding must still occur through Pin 3 (GND) to maintain signal integrity and avoid ground loop issues.
AP7347DQ-28FDZW-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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 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-28FDZW-7 FAQ
1.How can I place an order for AP7347DQ-28FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347DQ-28FDZW-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-28FDZW-7 reliable?
The price and inventory of AP7347DQ-28FDZW-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-28FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7347DQ-28FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347DQ-28FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347DQ-28FDZW-7?
AP7347DQ-28FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347DQ-28FDZW-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-28FDZW-7?
For technical support, including AP7347DQ-28FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347DQ-28FDZW-7 requirements.
6.How does Aetrix verify that AP7347DQ-28FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7347DQ-28FDZW-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-28FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7347DQ-28FDZW-7?
All AP7347DQ-28FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347DQ-28FDZW-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-28FDZW-7 part is unused and in its original packaging.
Return procedure for AP7347DQ-28FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7347DQ-28FDZW-7 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
