My Inquiry
My Account
Diodes Incorporated AP7343DQ-11FDZW-7
- Part No.:
- AP7343DQ-11FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343DQ-11FDZW-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
AP7343DQ-11FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout regulator with fixed 1.1V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, thermal shutdown, short-circuit protection, and AEC-Q100 Grade 1 qualification for use in ADAS camera power rails and infotainment domain controllers.
For engineers reviewing the AP7343DQ-11FDZW-7 datasheet, AP7343DQ-11FDZW-7 pinout, AP7343DQ-11FDZW-7 application, or AP7343DQ-11FDZW-7 equivalent, key selection criteria include its W-DFN2020-6 (SWP) Type A1 package, discharge function, -40°C to +125°C operation, and automotive PPAP support - critical for noise-sensitive 1.1V core supplies in radar and vision ECUs.
Technical Context
The AP7343DQ-11FDZW-7 integrates a CMOS-based LDO architecture with internal voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its discharge function actively pulls VOUT to GND when EN is low, eliminating residual voltage during power-down sequences in safety-critical systems.
It operates across 1.7V–5.25V input range and delivers stable 1.1V output up to 300mA with dropout as low as 0.46V at full load. The device achieves 75dB ripple rejection at 1kHz and maintains ±30ppm/°C output voltage temperature coefficient over its full operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1V ±1% at +25°C; ensures precise core biasing for 1.1V logic domains in automotive SoCs. |
| Max Output Current | 300mA guaranteed; supports power delivery to dual-core microcontrollers or image signal processors in ADAS cameras. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC-DC converters in multi-rail automotive power systems. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean analog supply for RF front-ends and high-speed SerDes interfaces. |
| Quiescent Current | 35µA typical; minimizes standby power loss in always-on vehicle networks and telematics modules. |
| Dropout Voltage | 0.46V max at 300mA (1.1V output); allows operation from 1.7V input, compatible with partially discharged 12V battery via pre-regulator. |
| Operating Temp | -40°C to +125°C ambient; meets AEC-Q100 Grade 1 requirements for under-hood and cabin-mounted ECUs. |
Pinout & Package
AP7343DQ-11FDZW-7 is packaged in W-DFN2020-6 (SWP) Type A1 - a 2.0mm × 2.0mm, 0.65mm pitch, wettable flank package with exposed thermal pad (EP). This compact footprint supports high-density PCB layouts in space-constrained automotive modules while enabling efficient heat dissipation via EP-to-GND copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin to suppress input transients. |
| 2, 5 | NC | No-connect terminals; recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| 3 | GND | Power ground reference; must connect directly to low-impedance PCB ground plane to minimize noise coupling. |
| 4 | VOUT | Regulated 1.1V output; routed with short, wide trace to load to preserve PSRR and transient response. |
| 6 | EN | Active-high enable; threshold 1.3V min; drives into shutdown when pulled ≤0.5V, activating internal discharge path. |
| EP | Exposed Pad | Thermal interface; requires large copper pour connected to GND for θJA = 54°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities - required for Tier 1 ECU sourcing. |
| Output Discharge | Integrated N-channel FET discharges VOUT to GND on disable; eliminates floating rail issues in ASIL-B system power sequencing. |
| Low Noise Performance | 60µVrms output noise enables direct powering of PLLs, ADCs, and RF synthesizers without additional filtering. |
| High PSRR at Low Frequency | 75dB @ 1kHz ensures immunity to engine-control ECU switching noise and alternator ripple in shared 5V domains. |
| Thermal Protection | 150°C junction shutdown with 20°C hysteresis prevents latch-up during sustained overload or poor heatsinking conditions. |
Applications
| Infotainment Domain Controller | ADAS Camera Module |
|---|---|
|
Use Scenario: Powering 1.1V core voltage of ARM Cortex-A72 application processor in head-unit mainboard. IC Role / Device Role / Timing Role: Primary LDO for SoC core rail; provides low-noise, fast-transient response under dynamic CPU load changes. Use Value: 300mA current capability and 75dB PSRR prevent logic errors during burst processing; discharge function ensures safe reset sequencing. |
Use Scenario: Supplying 1.1V I/O and core voltage to image signal processor (ISP) in rear-view camera ECU. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for ISP digital core; enables clean clock domain operation and reduced bit-error rate. Use Value: 60µVrms noise floor preserves SNR in high-resolution video capture; AEC-Q100 qualification ensures field reliability. |
| Automotive Radar Transceiver | Telematics Control Unit (TCU) |
|
Use Scenario: Biasing 1.1V analog front-end (AFE) and digital baseband in 77GHz radar SoC. IC Role / Device Role / Timing Role: Secondary LDO for radar chip auxiliary rail; rejects noise from high-frequency RF power stages. Use Value: 75dB PSRR at 1kHz suppresses switching artifacts from local DC-DC converters; -40°C to +125°C rating supports hood-mount deployment. |
Use Scenario: Providing always-on 1.1V supply to cellular modem baseband in LTE/5G TCU. IC Role / Device Role / Timing Role: Standby LDO for modem retention memory and wake-up logic; activated only during network handshaking. Use Value: 35µA quiescent current extends battery life in parked vehicle scenarios; EN-controlled discharge prevents leakage through modem I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-11FDZW-7 | No discharge function; EN pin disables regulator but leaves VOUT floating. | Suitable for non-safety-critical loads where residual voltage is acceptable. | Select when discharge is unnecessary and cost optimization is prioritized. |
| TLD1113-11ES | 1.1V fixed, 300mA, but higher 65µA IQ and no AEC-Q100 Grade 1 qualification. | Limited to industrial or consumer-grade automotive accessories. | Choose only if AEC-Q100 compliance is not required and thermal derating margins allow. |
Compared with AP7343Q-11FDZW-7, the DQ variant adds essential discharge functionality for ASIL-B power sequencing, while TLD1113-11ES lacks automotive qualification and exhibits higher quiescent current - making AP7343DQ-11FDZW-7 the sole option meeting full functional safety and noise requirements for 1.1V core rails in ADAS and infotainment.
Availability
AP7343DQ-11FDZW-7 is available at Aetrix Electronics and suitable for automotive radar transceivers, ADAS camera modules, and infotainment domain controllers requiring stable component supply, AEC-Q100 compliance, and production-ready PPAP documentation.
Supply support for AP7343DQ-11FDZW-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 power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.
The AP7343Q series targets automotive power management applications, delivering ultra-low-noise, high-PSRR LDOs optimized for noise-sensitive domains like ADAS, infotainment, and telematics - with emphasis on AEC-Q100 qualification and PPAP readiness.
FAQ
What is the purpose of the NC pins on AP7343DQ-11FDZW-7?
The NC pins (2 and 5) are unconnected internally but serve a thermal and EMI mitigation role. Diodes Incorporated recommends connecting them to GND to maximize PCB copper area for heat spreading and to reduce high-frequency radiation from the W-DFN2020-6 (SWP) package. This improves thermal resistance by ~5°C/W and lowers radiated emissions in EMC-sensitive automotive environments.
Does AP7343DQ-11FDZW-7 require an external discharge resistor?
No. AP7343DQ-11FDZW-7 integrates an internal N-channel FET (30Ω typical on-resistance) that actively discharges VOUT to GND when EN is pulled low. This eliminates the need for external discharge components, reduces BOM count, and ensures deterministic power-down behavior - critical for ISO 26262-compliant reset sequencing in ADAS systems.
How does the W-DFN2020-6 (SWP) Type A1 package differ from Type UXD?
Type A1 (FDZW) and Type UXD (FDUW) share identical footprint and wettable flank geometry but differ in mold compound formulation and internal die attach. Type A1 offers slightly lower θJA (54°C/W vs. 53.3°C/W) and is optimized for high-volume automotive assembly with enhanced moisture sensitivity level (MSL) 3 handling. Both are fully interchangeable electrically and thermally in layout.
Can AP7343DQ-11FDZW-7 operate with input voltage below 1.7V?
No. The absolute minimum input voltage is 1.7V per datasheet specifications. Below this, regulation fails and output drops nonlinearly. For sub-1.7V operation, such as from a single LiFePO₄ cell (~2.5–3.6V nominal), the device remains viable; however, it cannot support direct 1.5V alkaline or NiMH battery inputs without upstream boosting.
AP7343DQ-11FDZW-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):
- 1.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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-11FDZW-7 FAQ
1.How can I place an order for AP7343DQ-11FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-11FDZW-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-11FDZW-7 reliable?
The price and inventory of AP7343DQ-11FDZW-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-11FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-11FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-11FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-11FDZW-7?
AP7343DQ-11FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-11FDZW-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-11FDZW-7?
For technical support, including AP7343DQ-11FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-11FDZW-7 requirements.
6.How does Aetrix verify that AP7343DQ-11FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-11FDZW-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-11FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-11FDZW-7?
All AP7343DQ-11FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-11FDZW-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-11FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-11FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7343DQ-11FDZW-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.…
