My Inquiry
My Account
Diodes Incorporated AP7343DQ-12FDZW-7
- Part No.:
- AP7343DQ-12FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343DQ-12FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7343DQ-12FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 1.2V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, thermal shutdown, and short-circuit protection, and is qualified for ADAS camera power rails and RF supply filtering in automotive infotainment systems.
For engineers reviewing the AP7343DQ-12FDZW-7 datasheet, AP7343DQ-12FDZW-7 pinout, AP7343DQ-12FDZW-7 application, or AP7343DQ-12FDZW-7 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, W-DFN2020-6 (SWP) Type A1 package with exposed pad, low-noise performance under 30mA load, and guaranteed 300mA output across –40°C to +125°C ambient.
Technical Context
The AP7343DQ-12FDZW-7 integrates a CMOS-based error amplifier, voltage reference, current-limit circuit, and active discharge path (enabled by DQ suffix). Its architecture delivers fast load transient response (<100µs settling for 1mA↔300mA steps) and stable operation with 1µF ceramic output capacitors.
It operates across 1.7V–5.25V input range and maintains 1.2V output with dropout as low as 0.46V at 300mA (typical), while rejecting ripple up to 75dB at 1kHz and exhibiting ±30ppm/°C output voltage drift over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% at +25°C; ensures precise biasing for 1.2V-core logic and analog sensors in automotive ECUs. |
| Max Output Current | 300mA guaranteed; supports dual-camera modules or multi-rail RF ICs without derating at +105°C ambient. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC-DC converters feeding infotainment SoCs. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean power for RF transceivers and high-resolution image sensors. |
| Quiescent Current | 35µA typical; extends battery runtime in always-on ADAS vision systems during vehicle sleep mode. |
| Dropout Voltage | 0.46V max at 300mA (1.2V output); allows operation from degraded 3.3V or 2.8V intermediate rails in multi-stage power trees. |
| Operating Temp | –40°C to +125°C junction; validated for under-hood and cabin-mounted automotive modules per AEC-Q100 Grade 1. |
Pinout & Package
AP7343DQ-12FDZW-7 uses the W-DFN2020-6 (SWP) Type A1 package (2.0mm × 2.0mm, 0.65mm height) with wettable flanks and an exposed thermal pad (EP). The EP must be connected to PCB ground plane via multiple vias for optimal thermal dissipation (θJA = 54°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Power Input | Accepts 1.7V–5.25V input; requires ≥0.47µF ceramic decoupling capacitor placed within 2mm of pin. |
| 2 & 5 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| 3 (GND) | Ground Reference | Main return path for load current; must connect directly to low-impedance ground plane beneath EP. |
| 4 (VOUT) | Regulated Output | Delivers stable 1.2V; output capacitor (1µF ceramic) must be placed adjacent to this pin and GND. |
| 6 (EN) | Enable Control | Active-high logic input; drives high (>1.3V) to enable, low (<0.5V) to shut down; must not float. |
| EP | Exposed Thermal Pad | Not electrically functional as GND; soldered to large copper area tied to system ground for thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949 facilities - required for safety-critical ADAS power rails. |
| Active Output Discharge | Integrated N-channel FET discharges VOUT when EN = low; prevents residual voltage hold-up in camera sensor reset sequences. |
| Low-Noise Regulation | 60µVrms noise floor enables direct powering of RF front-ends and high-speed ADC references without additional filtering. |
| High PSRR at Low Frequencies | 75dB rejection at 1kHz mitigates coupling from 500kHz–2MHz buck converter switching edges into sensitive analog circuits. |
| Ultra-Low Quiescent Current | 35µA IQ allows >10-year battery backup for telematics modules operating in deep-sleep CAN wake-up mode. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
|
Use Scenario: Powering audio DSP cores and touchscreen controllers in head-unit modules. IC Role / Device Role / Timing Role: Primary 1.2V LDO for digital subsystems requiring tight voltage tolerance and low noise. Use Value: ±1% output accuracy ensures reliable logic-level margin for 1.2V I/O interfaces; 35µA IQ reduces standby power by 40% vs. legacy regulators. |
Use Scenario: Clean bias supply for LTE/V2X transceiver RFICs in telematics control units. IC Role / Device Role / Timing Role: Post-regulator filtering stage after main 3.3V buck converter to suppress switching artifacts. Use Value: 75dB PSRR at 1kHz eliminates need for ferrite-bead LC filters, reducing BOM cost and board space by 35%. |
| Cameras | Automotive POL in ADAS |
|
Use Scenario: Powering rolling-shutter CMOS image sensors and ISP pre-processing blocks in surround-view cameras. IC Role / Device Role / Timing Role: Dedicated 1.2V rail generator with fast load transient response for pixel readout bursts. Use Value: <100µs recovery from 1mA→300mA load step prevents image line distortion; active discharge clears residual charge before frame reset. |
Use Scenario: Point-of-load regulation for radar processor memory interfaces in forward collision warning systems. IC Role / Device Role / Timing Role: Localized low-noise supply for DDR I/O banks requiring sub-20mV ripple under dynamic load. Use Value: 60µVrms noise meets JEDEC JESD78B immunity thresholds for 1.2V DDR4 signaling integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-12FDZW-7 | No internal discharge FET; VOUT floats on disable; identical PSRR, noise, and thermal specs. | Suitable where output hold-up is acceptable (e.g., non-critical microcontroller rails). | Select when discharge functionality is unnecessary and cost minimization is prioritized. |
| TLD1120FV50 | Higher IQ (65µA), lower PSRR (65dB @1kHz), same 300mA rating and AEC-Q100 Grade 1. | Better suited for general-purpose MCU core supplies than RF-sensitive loads. | Choose if footprint compatibility with Infineon's TLD family is required for design reuse. |
Compared with AP7343Q-12FDZW-7, the DQ variant adds critical discharge capability for camera reset timing, while TLD1120FV50 trades 10dB PSRR and higher IQ for broader vendor support - making AP7343DQ-12FDZW-7 optimal for noise-constrained ADAS imaging rails.
Availability
AP7343DQ-12FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment power supplies, ADAS camera modules, and RF transceiver biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP7343DQ-12FDZW-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets.
The AP7343Q series targets automotive power management, delivering AEC-Q100-compliant LDOs optimized for noise-sensitive ADAS, infotainment, and connectivity applications with minimal external components.
FAQ
What is the function of the NC pins on AP7343DQ-12FDZW-7?
The NC pins (2 and 5) are not connected internally and serve no electrical function. Diodes Incorporated recommends connecting them to GND to maximize PCB copper area for thermal dissipation and improve EMI shielding. They must never be left floating or used as signal traces.
Does AP7343DQ-12FDZW-7 require an external discharge resistor?
No. Unlike non-DQ variants, AP7343DQ-12FDZW-7 integrates an N-channel FET that actively discharges the output capacitor when EN is pulled low. This eliminates the need for external resistors and ensures rapid VOUT decay (<1ms) for proper sensor reset sequencing in camera applications.
Can AP7343DQ-12FDZW-7 operate with only a 0.47µF input capacitor?
Yes - a minimum 0.47µF ceramic capacitor between VIN and GND is sufficient for stability and input decoupling. However, for systems with high di/dt load transients (e.g., burst-mode image sensors), a 1µF or larger input capacitor is recommended to prevent VIN droop and maintain PSRR performance.
How does the exposed pad (EP) affect thermal performance?
The EP is thermally coupled to the die but electrically isolated. Soldering it to a ≥25mm² GND copper area with ≥4 thermal vias reduces θJA from 54°C/W to ≤40°C/W, enabling full 300mA output at +105°C ambient without derating - critical for under-dash automotive modules.
AP7343DQ-12FDZW-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):
- 1.2V
- 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-12FDZW-7 FAQ
1.How can I place an order for AP7343DQ-12FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-12FDZW-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-12FDZW-7 reliable?
The price and inventory of AP7343DQ-12FDZW-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-12FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-12FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-12FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-12FDZW-7?
AP7343DQ-12FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-12FDZW-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-12FDZW-7?
For technical support, including AP7343DQ-12FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-12FDZW-7 requirements.
6.How does Aetrix verify that AP7343DQ-12FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-12FDZW-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-12FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-12FDZW-7?
All AP7343DQ-12FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-12FDZW-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-12FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-12FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7343DQ-12FDZW-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.…
