My Inquiry
My Account
Diodes Incorporated AP7343DQ-25FDZW-7
- Part No.:
- AP7343DQ-25FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343DQ-25FDZW-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-25FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 2.5V 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 RF modules.
For engineers reviewing the AP7343DQ-25FDZW-7 datasheet, AP7343DQ-25FDZW-7 pinout, AP7343DQ-25FDZW-7 application, or AP7343DQ-25FDZW-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-25FDZW-7 uses a CMOS-based LDO architecture with internal voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its enable input provides precise on/off control with defined logic thresholds (VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V) and sub-1µA standby leakage.
Unlike the non-discharge AP7343Q variant, this DQ version integrates an N-channel MOSFET (RON = 30Ω typical) between VOUT and GND to actively discharge output capacitance during shutdown - critical for fast power sequencing in automotive infotainment and camera systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% at +25°C; maintains regulation across -40°C to +125°C ambient. |
| Max Output Current | 300mA guaranteed; foldback short-circuit protection limits current to ~55mA under VOUT-to-GND fault. |
| PSRR | 75dB at 1kHz; suppresses ripple from upstream switching regulators in POL applications. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean supply for RF ICs and high-speed image sensors. |
| Quiescent Current | 35µA typical; supports always-on automotive subsystems without excessive battery drain. |
| Dropout Voltage | 250mV max at 300mA (for VOUT = 2.5V); allows operation down to VIN = 2.75V while sustaining full load. |
| Enable Threshold | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V; compatible with 1.8V/3.3V logic without level-shifting. |
| Thermal Shutdown | Triggers at +150°C with +20°C hysteresis; protects against sustained overload in compact PCB layouts. |
Pinout & Package
AP7343DQ-25FDZW-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). 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 capacitor placed adjacent to minimize supply impedance. |
| 2 (EN) | Enable Control | Active-high logic input; must not float; drives regulator into <1µA shutdown when pulled low. |
| 3 (GND) | Ground Reference | Primary return path for input/output current; connects directly to EP and system ground plane. |
| 4 (VOUT) | Regulated Output | Delivers stable 2.5V; includes integrated discharge FET (30Ω) to rapidly deplete COUT during disable. |
| 5,6 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal conduction and EMI reduction. |
| EP | Exposed Thermal Pad | Not electrically functional as GND; requires large copper area and ≥4 thermal vias to inner ground planes. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive operation from -40°C to +125°C junction temperature with PPAP support. |
| Integrated auto-discharge | 30Ω N-channel FET actively discharges VOUT to GND within microseconds upon EN deactivation. |
| Ultra-low noise output | 60µVrms noise floor enables direct powering of RF transceivers and CIS image sensors. |
| High PSRR at low frequency | 75dB rejection at 1kHz mitigates switching noise from buck converters feeding the LDO input. |
| Low quiescent current | 35µA operating current extends battery life in always-on vehicle modules like telematics and radar. |
| Wettable flank package | W-DFN2020-6 (SWP) Type A1 enables automated optical inspection (AOI) of solder joints for production traceability. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
Use Scenario: Powering audio DSPs and display controllers in head units with strict EMI and transient response requirements. IC Role / Device Role / Timing Role: Primary post-regulator delivering ultra-clean 2.5V to noise-sensitive analog and mixed-signal blocks. Use Value: 60µVrms noise and 75dB PSRR prevent audible artifacts and display flicker caused by DC-DC switching coupling. |
Use Scenario: Biasing VCOs, LNAs, and mixer stages in 5G-V2X and GNSS receivers within automotive telematics modules. IC Role / Device Role / Timing Role: Low-noise local power source ensuring phase noise integrity and signal-to-noise ratio stability. Use Value: Sub-100µV noise floor preserves RF receiver sensitivity; auto-discharge prevents residual charge from disrupting startup timing. |
| ADAS Camera Module | Automotive Wireless Communications |
Use Scenario: Supplying image sensor analog front-end (AFE) and ISP core logic in surround-view and driver-monitoring cameras. IC Role / Device Role / Timing Role: High-accuracy, fast-transient LDO providing 2.5V to CIS pixel arrays and ADC reference circuits. Use Value: ±1% output accuracy ensures consistent exposure calibration; 300mA capability supports multi-lane MIPI CSI-2 interfaces. |
Use Scenario: Powering Bluetooth LE and Wi-Fi 6 companion chips in digital key and OTA update gateways. IC Role / Device Role / Timing Role: Enable-controlled POL regulator enabling rapid power cycling during sleep/wake transitions. Use Value: 35µA quiescent current minimizes standby drain; auto-discharge guarantees deterministic reset timing for secure boot sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-25FDZW-7 | No integrated discharge FET; EN pin only disables regulation without active VOUT discharge. | Suitable where output hold time is acceptable or external discharge circuitry exists. | Select if auto-discharge is unnecessary and cost optimization is prioritized. |
| TLD1124-1ES/V48 | Higher 400mA rating, wider 2.5V–20V input range, but higher 70µA IQ and no AEC-Q100 Grade 1 certification. | Targeted at industrial lighting; lacks automotive qualification and wettable flank packaging. | Choose only for non-automotive designs requiring higher input voltage tolerance. |
Compared with AP7343Q-25FDZW-7, the DQ variant adds critical discharge functionality for automotive sequencing compliance, while TLD1124-1ES/V48 trades automotive qualification for broader input range - making AP7343DQ-25FDZW-7 the sole option meeting AEC-Q100 Grade 1, wettable flank, and integrated discharge requirements simultaneously.
Availability
AP7343DQ-25FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and wireless communication subsystems requiring stable component supply with full AEC-Q100 documentation and PPAP support.
Supply support for AP7343DQ-25FDZW-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 consumer markets.
The AP7343Q/DQ series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-critical power domains in ADAS, infotainment, and vehicle connectivity systems where AEC-Q100 compliance and thermal robustness are mandatory.
FAQ
What distinguishes AP7343DQ-25FDZW-7 from the standard AP7343Q variant?
The "D" suffix indicates integrated auto-discharge functionality: an internal 30Ω N-channel FET actively pulls VOUT to GND when EN is low, ensuring rapid output decay. This eliminates need for external discharge resistors in automotive power sequencing, reducing BOM count and PCB area while improving startup repeatability.
Can AP7343DQ-25FDZW-7 operate with input voltage below 2.5V?
Yes - it supports VIN as low as 1.7V, but dropout voltage increases with load. At 300mA output, minimum VIN is 2.75V (2.5V + 250mV max dropout). Below that, regulation fails and VOUT drops linearly with VIN. For 2.5V output, operation below 2.75V is only viable at reduced load currents.
Is the exposed pad (EP) electrically connected to GND?
No - the EP is thermally conductive but electrically isolated. It must be soldered to a PCB ground plane using ≥4 thermal vias for heat dissipation, but must not serve as the primary GND connection. The dedicated Pin 3 (GND) remains the sole electrical ground reference for current return paths.
How does the W-DFN2020-6 (SWP) Type A1 package improve manufacturability?
This wettable flank package features solderable sidewalls enabling automated optical inspection (AOI) of solder joint quality - critical for automotive production traceability. Its 2.0mm × 2.0mm footprint and 54°C/W θJA support high-density layouts while maintaining thermal performance comparable to larger packages.
AP7343DQ-25FDZW-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):
- 2.5V
- 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-25FDZW-7 FAQ
1.How can I place an order for AP7343DQ-25FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-25FDZW-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-25FDZW-7 reliable?
The price and inventory of AP7343DQ-25FDZW-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-25FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-25FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-25FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-25FDZW-7?
AP7343DQ-25FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-25FDZW-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-25FDZW-7?
For technical support, including AP7343DQ-25FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-25FDZW-7 requirements.
6.How does Aetrix verify that AP7343DQ-25FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-25FDZW-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-25FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-25FDZW-7?
All AP7343DQ-25FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-25FDZW-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-25FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-25FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7343DQ-25FDZW-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.…
