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Diodes Incorporated AP7343Q-27FDZW-7
- Part No.:
- AP7343Q-27FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-27FDZW-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-27FDZW-7 from Diodes Incorporated is an AEC-Q100 Grade 1 qualified automotive LDO regulator delivering fixed 2.7V output at up to 300mA, with ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). Packaged in W-DFN2020-6 (SWP) Type A1, it supports infotainment power rails and ADAS point-of-load applications requiring low-noise, high-PSRR regulation under -40°C to +125°C ambient conditions.
For engineers reviewing the AP7343Q-27FDZW-7 datasheet, AP7343Q-27FDZW-7 pinout, AP7343Q-27FDZW-7 application, or AP7343Q-27FDZW-7 equivalent, key selection criteria include guaranteed 300mA output current, thermal shutdown at +150°C, EN-controlled enable/disable functionality, and compatibility with 1µF ceramic input/output capacitors for compact automotive PCB layouts.
Technical Context
The AP7343Q-27FDZW-7 employs a CMOS-based architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its enable input provides precise on/off control with defined logic thresholds (EN low ≤0.5V, EN high ≥1.3V), and internal thermal shutdown activates at +150°C with +20°C hysteresis.
It operates across 1.7V–5.25V input range while maintaining stable 2.7V output, with dropout voltage as low as 0.22V at 300mA (for VOUT >3.0V). The device exhibits fast load transient response-under 100µs recovery for 1mA↔300mA steps-and achieves 75dB ripple rejection at 1kHz due to high PSRR design optimized for RF-sensitive automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7V ±1% at +25°C; ensures stable supply for 2.7V-tolerant microcontrollers and sensors. |
| Max Output Current | 300mA guaranteed; supports moderate-power automotive loads like camera image signal processors. |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters in infotainment systems. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean power for RF receivers and analog front-ends in wireless comms modules. |
| Quiescent Current | 35µA typical; minimizes standby power loss in always-on automotive domains such as telematics. |
| Operating Temp | -40°C to +125°C ambient; validated for engine bay and cabin-mounted ADAS ECUs per AEC-Q100 Grade 1. |
| Dropout Voltage | 0.22V max at 300mA (VOUT = 2.7V); allows operation from 2.92V input, supporting wide VIN battery-supplied systems. |
Pinout & Package
AP7343Q-27FDZW-7 uses the W-DFN2020-6 (SWP) Type A1 package (2.0mm × 2.0mm, 0.65mm pitch), featuring an exposed thermal pad (EP) for enhanced heat dissipation. PCB layout requires large copper area connected to GND under EP to maintain junction temperature within -40°C to +150°C limits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed adjacent to minimize input impedance. |
| 2 & 5 | NC | No-connect terminals; recommended to tie to GND for improved thermal conduction and EMI shielding. |
| 3 | GND | Analog/digital ground reference; must connect directly to low-impedance PCB ground plane to avoid regulation error. |
| 4 | VOUT | Regulated 2.7V output; requires 1µF ceramic capacitor placed within 2mm of pin to ensure stability and transient response. |
| 6 | EN | Active-high enable; drives regulator ON when ≥1.3V, OFF when ≤0.5V; floating state prohibited. |
| EP | Exposed Pad | Thermal interface only; not electrically functional; must be soldered to GND copper pour for θJA = 54°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use with PPAP support and IATF 16949 manufacturing; enables direct integration into safety-critical ECUs. |
| Low-noise 60µVrms output | Enables powering of RF transceivers and precision ADCs without additional filtering, reducing BOM count in ADAS radar modules. |
| 75dB PSRR at 1kHz | Rejects ripple from buck converters feeding infotainment SoCs, preventing audio artifacts and display noise in head units. |
| 35µA quiescent current | Extends battery life in always-on vehicle networks (e.g., CAN gateway wake-up circuits) without compromising startup time. |
| Thermal shutdown with hysteresis | +150°C trip threshold and +20°C hysteresis prevents thermal cycling damage during sustained overload in hot under-hood environments. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
|
Use Scenario: Powering audio DSPs and display controllers in head unit mainboards where switching noise from DC/DC converters must be suppressed. IC Role / Device Role / Timing Role: Low-noise post-regulator providing clean 2.7V bias to analog audio stages and HDMI PHYs. Use Value: 75dB PSRR eliminates need for ferrite beads or LC filters, reducing board area and cost while meeting CISPR 25 Class 5 emissions. |
Use Scenario: Supplying 2.7V to LTE/V2X transceiver ICs in telematics control units operating near high-frequency RF sources. IC Role / Device Role / Timing Role: Stable, low-phase-noise voltage source ensuring consistent RF front-end gain and LO stability. Use Value: 60µVrms noise floor prevents reciprocal mixing degradation in receiver sensitivity, preserving link margin. |
| Camera Module Power | ADAS Point-of-Load |
|
Use Scenario: Delivering regulated 2.7V to CMOS image sensors and ISP cores in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: High-PSRR LDO isolating sensor analog supply from noisy digital domain and motor actuator transients. Use Value: Fast load transient response (<100µs) maintains image quality during auto-exposure changes and LED flash triggering. |
Use Scenario: Local regulation for 2.7V supplies in radar ECU FPGAs or vision processor SoCs requiring tight voltage tolerance. IC Role / Device Role / Timing Role: Automotive-grade POL converter enabling independent voltage domain control in multi-rail ADAS subsystems. Use Value: ±1% output accuracy over -40°C to +125°C ensures reliable operation of timing-critical SerDes interfaces (e.g., MIPI CSI-2). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361Q-27W5-7 | Higher 600mA output current; larger SOT25 package; same 2.7V fixed output and ±1% accuracy. | Better suited for higher-current loads like dual-camera ISPs; less suitable for space-constrained RF modules. | Select when >300mA peak load or legacy through-hole-compatible footprint is required. |
| TLD1124-27QV | Integrated current sense and diagnostic flag; 250mA output; 2.7V output; AEC-Q100 qualified but no PSRR spec >65dB. | Targeted at LED driver bias rails with fault reporting; lacks noise/PSRR performance for RF/analog use. | Choose only if system-level diagnostics (e.g., open-load detection) outweigh low-noise requirements. |
Compared with AP7343Q-27FDZW-7, AP7361Q-27W5-7 trades compact DFN size for higher current and thermal mass, while TLD1124-27QV adds monitoring features at the expense of RF-grade noise suppression-making the AP7343Q optimal for noise-sensitive, space-constrained automotive analog power nodes.
Availability
AP7343Q-27FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and vehicle telematics requiring stable component supply with AEC-Q100 compliance and full PPAP documentation support.
Supply support for AP7343Q-27FDZW-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, with ISO/TS 16949-certified manufacturing and broad automotive qualification coverage.
The AP7343Q series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive power domains in infotainment, ADAS, and body electronics where high PSRR, low quiescent current, and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum allowable input voltage for AP7343Q-27FDZW-7?
The absolute maximum input voltage is 6.0V, but recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits and may trigger thermal shutdown or reduce long-term reliability, especially at high ambient temperatures.
Can the EN pin be left unconnected?
No-the EN pin must never be left floating. It must be actively driven to ≥1.3V for enable or ≤0.5V for disable. If unused, tie EN directly to VIN to ensure permanent operation; floating EN causes unpredictable regulator behavior and potential oscillation.
Is AP7343Q-27FDZW-7 compatible with 1µF ceramic output capacitors?
Yes-this device is explicitly characterized and stable with 1.0µF X5R/X7R ceramic capacitors (ESR <10mΩ). Layout best practice requires placing COUT within 2mm of VOUT and GND pins to maintain phase margin and transient response performance.
Does AP7343Q-27FDZW-7 include output discharge functionality?
No-AP7343Q-27FDZW-7 is the non-discharge variant. Unlike AP7343DQ versions, it lacks an internal NMOS discharge path from VOUT to GND during shutdown, so external discharge circuitry is required if rapid VOUT decay is needed for system sequencing.
AP7343Q-27FDZW-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):
- 2.7V
- 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-27FDZW-7 FAQ
1.How can I place an order for AP7343Q-27FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-27FDZW-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-27FDZW-7 reliable?
The price and inventory of AP7343Q-27FDZW-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-27FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-27FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-27FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-27FDZW-7?
AP7343Q-27FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-27FDZW-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-27FDZW-7?
For technical support, including AP7343Q-27FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-27FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-27FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-27FDZW-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-27FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-27FDZW-7?
All AP7343Q-27FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-27FDZW-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-27FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-27FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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