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Diodes Incorporated AP7343DQ-28FDZW-7
- Part No.:
- AP7343DQ-28FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343DQ-28FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7343DQ-28FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 2.8V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current - designed for noise-sensitive power domains in ADAS cameras and infotainment RF supplies.
For engineers reviewing the AP7343DQ-28FDZW-7 datasheet, AP7343DQ-28FDZW-7 pinout, AP7343DQ-28FDZW-7 application, or AP7343DQ-28FDZW-7 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, W-DFN2020-6 (SWP) Type A1 thermal performance (θJA = 54°C/W), enable-controlled shutdown, and integrated auto-discharge functionality.
Technical Context
The AP7343DQ-28FDZW-7 implements a CMOS-based LDO architecture with internal voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its enable input (EN) provides precise on/off control with defined logic thresholds (VIL ≤ 0.5V, VIH ≥ 1.3V) and sub-1µA standby leakage.
This variant includes an integrated N-channel discharge FET (RON = 30Ω typical) activated during shutdown to rapidly deplete output capacitance - critical for sequencing compliance in multi-rail automotive systems. It operates across –40°C to +125°C ambient and supports input voltages from 1.7V to 5.25V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±1% at +25°C; ensures stable supply for 2.8V RF ICs and camera sensors without external feedback. |
| Max Output Current | 300mA guaranteed; sufficient for powering multiple low-power automotive subsystems from a single rail. |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters in mixed-signal automotive domains. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean biasing of RF front-ends and high-resolution image sensors. |
| Quiescent Current | 35µA typical; minimizes battery drain in always-on vehicle modules such as telematics wake-up circuits. |
| Dropout Voltage | 0.26V max at 300mA (for VOUT = 2.8V); allows operation from 3.06V input - compatible with degraded 3.3V bus conditions. |
| Operating Temp | –40°C to +125°C ambient; validated for under-hood and cabin-mounted ADAS ECUs per AEC-Q100 Grade 1. |
Pinout & Package
AP7343DQ-28FDZW-7 is packaged in W-DFN2020-6 (SWP) Type A1 - a 2.0mm × 2.0mm, 0.65mm height wettable flank package with exposed thermal pad (EP). Optimized for high-density automotive PCBs and automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires local 0.47µF ceramic decoupling placed within 2mm of pin to suppress supply transients. |
| 2 & 5 | NC | No-connect terminals; recommended to tie to GND for enhanced thermal conduction via PCB copper fill. |
| 3 | GND | Power ground reference; must connect directly to solid ground plane with minimal trace inductance. |
| 4 | VOUT | Regulated 2.8V output; routed with wide trace and adjacent 1µF ceramic capacitor to minimize impedance and EMI. |
| 6 | EN | Active-high enable; drives regulator ON when ≥1.3V; pulls output to 0V and activates discharge FET when ≤0.5V. |
| EP | Exposed Pad | Thermal interface only; must be soldered to large GND-copper area (≥40mm²) but not used as functional GND node. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities - meets OEM Tier-1 sourcing requirements. |
| Integrated Discharge | 30Ω N-channel FET discharges VOUT to <100mV within 100µs after EN deactivation - eliminates hold-up voltage in power sequencing. |
| Low-Noise Regulation | 60µVrms noise floor enables direct powering of RF transceivers and CIS image sensors without additional filtering. |
| High PSRR at Low Frequencies | 75dB rejection at 1kHz mitigates ripple from buck converter switching edges and alternator noise in 12V systems. |
| Ultra-Low Quiescent Current | 35µA IQ supports >10-year battery life in always-on vehicle modules (e.g., keyless entry receivers, CAN wake-up nodes). |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
Use Scenario: Stable 2.8V rail for digital audio processors and touchscreen controllers in head units. IC Role / Device Role / Timing Role: Primary post-regulator delivering precision voltage with fast load transient response (<100µs recovery). Use Value: Eliminates need for secondary LC filtering; reduces BOM count while maintaining <±1% output regulation under dynamic audio decoding loads. |
Use Scenario: Clean bias for LTE/V2X transceiver RF front-ends in telematics control units. IC Role / Device Role / Timing Role: Low-noise LDO isolating sensitive analog RF sections from noisy digital domains. Use Value: 60µVrms noise and 75dB PSRR prevent reciprocal mixing and EVM degradation in 4G/5G modems. |
| Cameras | Automotive POL in ADAS |
Use Scenario: Powering 2.8V image sensor analog cores and ISP interfaces in surround-view camera modules. IC Role / Device Role / Timing Role: Point-of-load regulator with discharge function ensuring safe power-down before sensor reset sequences. Use Value: Integrated 30Ω discharge FET clears VOUT within 100µs, preventing latch-up during hot-plug or firmware resets. |
Use Scenario: Local 2.8V supply for radar SoC I/O banks and CAN FD transceivers in forward collision warning ECUs. IC Role / Device Role / Timing Role: AEC-Q100-compliant POL delivering regulated voltage with thermal shutdown and short-circuit foldback protection. Use Value: Guaranteed 300mA output and –40°C to +125°C operation ensure uninterrupted radar processing during extreme ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361DQ-28W5-7 | Higher 600mA output, same 2.8V/±1%, but in SOT25 package (θJA = 179°C/W); no discharge FET. | Lacks auto-discharge; unsuitable for strict sequencing; better for space-constrained non-ADAS modules with higher current demand. | Select when >300mA load current is required and discharge is not needed - e.g., body control module microcontrollers. |
| TLD6512-28ES | Infineon automotive LDO; 300mA, 2.8V, ±2% accuracy, 65dB PSRR, no discharge; AEC-Q100 Grade 1, SO-8 package. | SO-8 footprint increases board area; lower PSRR impacts RF supply integrity; no discharge limits use in camera power trees. | Choose only if legacy SO-8 layout reuse is mandatory and system-level discharge is handled externally. |
Compared with AP7343DQ-28FDZW-7, AP7361DQ-28W5-7 trades thermal efficiency and discharge capability for higher current in a larger package, while TLD6512-28ES sacrifices noise/PSRR performance and sequencing control for package compatibility - making the AP7343DQ-28FDZW-7 optimal for thermally dense, noise-critical ADAS POLs requiring controlled shutdown.
Availability
AP7343DQ-28FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics RF power supplies requiring stable component supply, AEC-Q100 compliance, and production-ready traceability.
Supply support for AP7343DQ-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, computing, and consumer markets.
The AP7343Q series targets automotive power management, delivering high-PSRR, low-noise LDOs optimized for ADAS, infotainment, and connectivity systems operating in harsh thermal and electrical environments.
FAQ
What distinguishes AP7343DQ-28FDZW-7 from the non-discharge AP7343Q-28FDZW-7?
The 'D' in AP7343DQ denotes integrated auto-discharge functionality: a 30Ω N-channel FET actively pulls VOUT to ground within 100µs after EN is pulled low. This prevents residual voltage from interfering with downstream device reset timing - essential for camera sensor power sequencing and ISO 26262-compliant systems where uncontrolled hold-up violates safety goals.
Can AP7343DQ-28FDZW-7 operate with input voltage below 2.8V?
Yes - it supports VIN as low as 1.7V, but dropout voltage rises with load. At 300mA output, minimum VIN is 3.06V (2.8V + 0.26V dropout). Below that, regulation fails and VOUT drops linearly with VIN. For sub-3V inputs, derate output current using the dropout vs. IOUT curves in Figure 1 of DS41595 Rev. 5-2.
Is the W-DFN2020-6 (SWP) Type A1 package compatible with standard reflow profiles?
Yes - the W-DFN2020-6 (SWP) Type A1 package is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 1 and supports peak reflow temperatures up to 260°C. Its wettable flanks enable reliable automated optical inspection (AOI) of solder joints, critical for automotive manufacturing traceability.
How does the EN pin behave during power-up and brown-out conditions?
The EN pin has hysteresis-free thresholds: regulator enables when VEN ≥ 1.3V and disables when VEN ≤ 0.5V. During slow-rising VIN, EN must be held low until VIN exceeds 1.7V to prevent premature turn-on. For brown-out resilience, tie EN to a dedicated supervisor IC output rather than directly to VIN to avoid glitch-induced toggling.
AP7343DQ-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):
- 5.25V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- W-DFN2020-6 (Type A1)
AP7343DQ-28FDZW-7 FAQ
1.How can I place an order for AP7343DQ-28FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-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 AP7343DQ-28FDZW-7 reliable?
The price and inventory of AP7343DQ-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 AP7343DQ-28FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-28FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-28FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-28FDZW-7?
AP7343DQ-28FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-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 AP7343DQ-28FDZW-7?
For technical support, including AP7343DQ-28FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-28FDZW-7 requirements.
6.How does Aetrix verify that AP7343DQ-28FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-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 AP7343DQ-28FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-28FDZW-7?
All AP7343DQ-28FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-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 AP7343DQ-28FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-28FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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