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Diodes Incorporated AP7343Q-25FDZW-7
- Part No.:
- AP7343Q-25FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-25FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7343Q-25FDZW-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive-qualified low-dropout regulator delivering fixed 2.5V output at up to 300mA, with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It operates across 1.7V–5.25V input and –40°C to +125°C ambient, targeting noise-sensitive power domains in ADAS cameras and RF subsystems.
For engineers reviewing the AP7343Q-25FDZW-7 datasheet, AP7343Q-25FDZW-7 pinout, AP7343Q-25FDZW-7 application, or AP7343Q-25FDZW-7 equivalent, key selection criteria include dropout voltage (0.25V typ. @300mA for 2.5V output), thermal shutdown threshold (+150°C), EN logic thresholds (0.5VIL/1.3VIH), and W-DFN2020-6 (SWP) Type A1 package thermal resistance (θJA = 54°C/W).
Technical Context
The AP7343Q-25FDZW-7 integrates a CMOS-based pass transistor, precision voltage reference, error amplifier, and enable-controlled startup circuitry-no external discharge FET required. Its architecture delivers fast load transient response (<100µs recovery for 1mA↔300mA step with 4.7µF COUT) and stable operation with 1µF ceramic output capacitors.
It features foldback short-circuit protection (55mA typical clamp), thermal shutdown with 20°C hysteresis, and guaranteed performance over full automotive temperature range. The device lacks internal output discharge (non-D variant), requiring external circuitry if rapid VOUT decay is needed during disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% at +25°C; ±30ppm/°C tempco ensures <±2.5mV drift over –40°C to +125°C. |
| Max Output Current | 300mA continuous; supports camera sensor rails and RF LNA biasing without derating up to +125°C ambient. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC-DC converters in infotainment domain controllers. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean power for high-dynamic-range automotive image sensors. |
| Quiescent Current | 35µA typ.; maintains ultra-low standby power in always-on ADAS modules with periodic wake-up. |
| Dropout Voltage | 0.25V typ. @300mA (2.5V output); allows operation from 2.75V input-critical for post-buck or battery-backed systems. |
| Enable Thresholds | VEN(H) = 1.3V min, VEN(L) = 0.5V max; compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7343Q-25FDZW-7 uses the W-DFN2020-6 (SWP) Type A1 package (2.0mm × 2.0mm × 0.65mm), featuring wettable flanks and an exposed thermal pad (EP) for enhanced PCB heat dissipation. Recommended layout uses large GND-connected copper area under EP.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Power Input | Accepts 1.7V–5.25V; requires ≥0.47µF ceramic capacitor placed adjacent to minimize input impedance. |
| 2 & 5 (NC) | No Connect | Internally unconnected; recommended to tie to GND for thermal relief and EMI reduction. |
| 3 (GND) | Ground Reference | Primary return path; must connect directly to low-impedance ground plane to maintain PSRR and stability. |
| 4 (EN) | Enable Control | Active-high logic; floating state disables regulator-must be driven to avoid unintended shutdown. |
| 6 (VOUT) | Regulated Output | Delivers 2.5V ±1%; requires 1µF ceramic capacitor within 2mm of pin for transient stability. |
| EP | Exposed Thermal Pad | Not electrically functional as GND; soldered to GND copper pour to achieve θJA = 54°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use at TJ = –40°C to +150°C; PPAP-capable with IATF 16949 manufacturing. |
| Ultra-low output noise | 60µVrms (10Hz–100kHz) enables direct powering of RF receivers and high-resolution ADCs without additional filtering. |
| High PSRR at low frequency | 75dB at 1kHz suppresses ripple from buck converter switching frequencies and their harmonics. |
| Low-quiescent-current enable mode | 10nA standby current (ISTANDBY ≤1.0µA) minimizes battery drain in always-on vehicle networks. |
| Thermal shutdown with hysteresis | +150°C trip point with +20°C hysteresis prevents thermal cycling during sustained overload conditions. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
|
Use Scenario: Powering SoC I/O banks and display interface circuitry in head-unit designs. IC Role / Device Role / Timing Role: Primary low-noise post-regulator for 2.5V core logic rails downstream of a 5V buck converter. Use Value: 75dB PSRR eliminates need for ferrite-bead filters, reducing BOM count and board space while meeting CISPR 25 Class 5 emissions. |
Use Scenario: Biasing low-noise amplifiers (LNAs) and mixers in cellular/V2X front-end modules. IC Role / Device Role / Timing Role: Clean 2.5V analog supply isolated from noisy digital domains via high PSRR and low noise. Use Value: 60µVrms noise floor preserves receiver sensitivity (NF < 2dB) without requiring discrete RC filtering. |
| ADAS Camera POL | Automotive Wireless Communications |
|
Use Scenario: Providing regulated 2.5V to high-speed image signal processors (ISPs) and MIPI CSI-2 serializers. IC Role / Device Role / Timing Role: Point-of-load regulator placed adjacent to camera module PCB to minimize trace inductance. Use Value: 300mA capability and fast transient response (<100µs) prevent voltage droop during burst-mode pixel readout. |
Use Scenario: Powering Bluetooth/Wi-Fi transceivers and GNSS RF sections in telematics control units. IC Role / Device Role / Timing Role: Dedicated LDO for 2.5V analog/RF sections, decoupled from shared 3.3V digital rail. Use Value: ±1% output accuracy ensures consistent PLL VCO tuning voltage, maintaining frequency stability across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6216D252MR-G | Same 2.5V fixed output, but only 200mA rated; 50µVrms noise, 65dB PSRR @1kHz; SOT-25 only. | Lacks AEC-Q100 qualification and automotive PPAP support; not suitable for safety-critical ADAS nodes. | Select when cost sensitivity outweighs automotive compliance and higher current demand. |
| Richtek RT9080AL-25PUF | 2.5V output, 300mA, but 100µVrms noise and 60dB PSRR @1kHz; requires 2.2µF COUT minimum. | Higher noise degrades RF receiver NF; lower PSRR necessitates additional input filtering in noisy environments. | Acceptable for non-RF infotainment peripherals where noise budget permits 100µVrms. |
Compared with XC6216D252MR-G and RT9080AL-25PUF, AP7343Q-25FDZW-7 uniquely combines AEC-Q100 Grade 1 qualification, 300mA capability, 60µVrms noise, and 75dB PSRR in a thermally optimized 2mm×2mm wettable flank package-making it the only drop-in solution for automotive RF and imaging POLs demanding simultaneous low noise, high PSRR, and functional safety readiness.
Availability
AP7343Q-25FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment power supplies, ADAS camera POLs, and automotive RF supplies requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.
Supply support for AP7343Q-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design, manufacturing, and test facilities certified to IATF 16949 for automotive-grade products.
The AP7343Q belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive power domains in ADAS, infotainment, and telematics-emphasizing PSRR, low noise, and thermal robustness over wide temperature ranges.
FAQ
Is AP7343Q-25FDZW-7 pin-compatible with other variants in the AP7343Q family?
Yes-AP7343Q-25FDZW-7 shares identical pinout and footprint with all W-DFN2020-6 (SWP) Type A1 variants (e.g., AP7343Q-33FDZW-7). Only the output voltage and marking differ; no layout change is needed when migrating between 0.9V–3.6V fixed-output versions in the same package.
Does AP7343Q-25FDZW-7 include internal output discharge functionality?
No-AP7343Q-25FDZW-7 is the non-discharge variant (denoted by "Q", not "DQ"). When disabled via EN, VOUT discharges only through the load; for controlled discharge, an external NMOS switch or resistor network must be added between VOUT and GND.
What is the minimum input capacitance required for stable operation?
A minimum 0.47µF X5R/X7R ceramic capacitor is required between VIN and GND, placed within 2mm of the pins. Larger values (≥1µF) improve immunity to input rail transients but are not mandatory for basic stability per the datasheet's 1µF CIN recommendation.
Can AP7343Q-25FDZW-7 operate with a 1.8V input supply?
No-its absolute minimum input voltage is 1.7V, but the dropout voltage at 300mA for 2.5V output is 0.25V (typical). To sustain regulation, VIN must remain ≥2.75V under full load; at 1.8V input, the device enters dropout and cannot maintain 2.5V output.
AP7343Q-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)
AP7343Q-25FDZW-7 FAQ
1.How can I place an order for AP7343Q-25FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-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 AP7343Q-25FDZW-7 reliable?
The price and inventory of AP7343Q-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 AP7343Q-25FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-25FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-25FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-25FDZW-7?
AP7343Q-25FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-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 AP7343Q-25FDZW-7?
For technical support, including AP7343Q-25FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-25FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-25FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-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 AP7343Q-25FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-25FDZW-7?
All AP7343Q-25FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-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 AP7343Q-25FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-25FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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