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Diodes Incorporated AP7343Q-15FDZW-7
- Part No.:
- AP7343Q-15FDZW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7343Q-15FDZW-7.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:2,997
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Product details
Overview
AP7343Q-15FDZW-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 1.5V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current - designed for noise-sensitive power rails in ADAS camera modules and infotainment domain controllers.
For engineers reviewing the AP7343Q-15FDZW-7 datasheet, AP7343Q-15FDZW-7 pinout, AP7343Q-15FDZW-7 application, or AP7343Q-15FDZW-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 absence of output discharge functionality.
Technical Context
The AP7343Q-15FDZW-7 employs a CMOS-based LDO architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its enable input provides precise on/off control with defined logic thresholds (VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V), and it lacks internal output discharge - distinguishing it from the AP7343DQ variant.
It operates across 1.7V–5.25V input range and delivers stable 1.5V output up to 300mA while maintaining <0.46V dropout (typ. 0.39V) at full load. Thermal shutdown activates at +150°C with +20°C hysteresis, and short-circuit protection limits output current to ~55mA under VOUT-to-GND fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% - ensures precise rail generation for 1.5V logic or analog subsystems without external feedback. |
| Max Output Current | 300mA continuous - supports moderate-power automotive sensors, RF ICs, or camera ISP cores. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters in multi-rail automotive systems. |
| Output Noise | 60µVrms (10Hz–100kHz) - minimizes jitter and SNR degradation in high-speed ADCs or RF receivers. |
| Quiescent Current | 35µA typical - enables ultra-low-power sleep-mode operation in always-on vehicle networks. |
| Dropout Voltage | 0.39V typ. at 300mA - allows operation from 1.89V input, compatible with partially discharged 2.0V battery-backed rails. |
| Operating Temp | −40°C to +125°C ambient - meets automotive cabin and engine bay thermal requirements per AEC-Q100 Grade 1. |
Pinout & Package
AP7343Q-15FDZW-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). It offers θJA = 54°C/W and θJC = 17°C/W, enabling high-density PCB layouts with robust thermal dissipation when EP is connected to GND plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Power Input | Accepts 1.7V–5.25V supply; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 (EN) | Enable Control | Active-high logic input; must be driven to ≥1.3V to enable regulation, ≤0.5V to enter shutdown (ISTANDBY ≤ 1.0µA). |
| 3 (GND) | Ground Reference | Primary return path for input/output currents; must connect directly to low-impedance ground plane. |
| 4 (VOUT) | Regulated Output | Delivers 1.5V ±1% at up to 300mA; requires ≥1.0µF ceramic output capacitor near pin for stability. |
| 5, 6 (NC) | No Connect | Internally unconnected; recommended to tie to GND for enhanced thermal conduction and EMI shielding. |
| EP | Exposed Thermal Pad | Not electrically functional; must be soldered to large GND copper area for thermal management - not used as signal ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for −40°C to +125°C operation with PPAP support - suitable for safety-critical ADAS power domains. |
| High PSRR & Low Noise | 75dB rejection at 1kHz + 60µVrms noise enables clean power for RF transceivers and high-resolution imaging sensors. |
| Ultra-Low Quiescent Current | 35µA typical IQ extends battery life in always-on telematics and gateway modules during vehicle sleep states. |
| Low Dropout Performance | 0.39V typ. dropout at 300mA allows efficient use of marginal input voltages in 2.0V–3.3V intermediate rails. |
| Thermally Optimized Package | W-DFN2020-6 (SWP) Type A1 delivers 54°C/W θJA, enabling >250mA continuous operation on 2-layer PCBs with minimal copper. |
Applications
| Infotainment Power Supplies | Automotive RF Supplies |
|---|---|
Use Scenario: Powering audio DSPs, display timing controllers, and USB-C PD interface ICs in head-unit systems. IC Role / Device Role / Timing Role: Primary 1.5V LDO for low-noise digital core logic and PLL reference supplies. Use Value: 60µVrms noise prevents audible artifacts in Class-D amplifiers and reduces bit errors in high-speed serial links. |
Use Scenario: Supplying 1.5V bias to LTE/V2X transceiver front-ends and GNSS RFICs in telematics control units. IC Role / Device Role / Timing Role: Clean post-regulation stage following buck converter, rejecting switching ripple above 1MHz. Use Value: 75dB PSRR at 1kHz and flat response up to 100kHz suppresses DC/DC-induced phase noise in local oscillators. |
| Cameras | Automotive POL in ADAS |
Use Scenario: Providing 1.5V to image signal processors (ISPs) and MIPI CSI-2 serializer ICs in surround-view cameras. IC Role / Device Role / Timing Role: Point-of-load regulator delivering stable voltage during rapid exposure-triggered current transients. Use Value: Fast load transient response (<100µs settling) and 300mA capability prevent frame corruption during LED flash bursts. |
Use Scenario: Generating 1.5V for radar SoC auxiliary domains and sensor fusion accelerators in forward collision warning ECUs. IC Role / Device Role / Timing Role: Automotive-compliant POL supplying safety-relevant logic blocks with guaranteed -40°C to +125°C operation. Use Value: AEC-Q100 qualification and thermal shutdown (+150°C) ensure functional safety compliance per ISO 26262 ASIL-B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343DQ-15FDZW-7 | Includes active output discharge (30Ω pull-down on VOUT during shutdown); otherwise identical electrical specs and package. | Required where fast VOUT discharge is needed to meet system-level power sequencing or reset timing constraints. | Select DQ version only if discharge functionality is explicitly required; Q version avoids unnecessary VOUT collapse during brief EN glitches. |
| TI TPS78015QDRVRQ1 | Lower IQ (500nA), same 1.5V/300mA rating, but higher dropout (0.6V @ 300mA) and lower PSRR (65dB @ 1kHz). | Better suited for ultra-low-power wake-up circuits than noise-critical RF or imaging rails. | Choose AP7343Q-15FDZW-7 over TPS78015QDRVRQ1 when PSRR >70dB and dropout <0.45V are mandatory for signal integrity. |
Compared with AP7343DQ-15FDZW-7, this Q-version eliminates discharge-related leakage and simplifies sequencing; versus TPS78015QDRVRQ1, it delivers superior noise suppression and tighter dropout - critical for ADAS sensor power integrity.
Availability
AP7343Q-15FDZW-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics gateways requiring stable component supply with AEC-Q100 traceability and IATF 16949 manufacturing assurance.
Supply support for AP7343Q-15FDZW-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 for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing.
The AP7343Q belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for low-noise, high-PSRR point-of-load regulation in safety-critical vehicle subsystems operating across extended temperature ranges.
FAQ
What is the maximum allowable input voltage for AP7343Q-15FDZW-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V may trigger overvoltage protection or degrade long-term reliability, even if within absolute max ratings. Operation above 5.25V is not characterized or guaranteed.
Does AP7343Q-15FDZW-7 require an external discharge resistor?
No. The AP7343Q variant does not integrate output discharge circuitry, so VOUT remains floating after EN is pulled low. If rapid VOUT decay is required, an external 10kΩ–100kΩ pull-down resistor between VOUT and GND must be added - unlike the AP7343DQ version which includes internal 30Ω discharge.
Can AP7343Q-15FDZW-7 operate with only a 0.47µF input capacitor?
Yes - a minimum 0.47µF ceramic capacitor is sufficient for basic input decoupling per datasheet recommendations. However, for applications with high di/dt load transients (e.g., burst-mode camera ISPs), a 1.0µF or larger X7R/X5R ceramic capacitor placed within 2mm of VIN/GND pins is strongly advised to maintain stability and reduce input ripple coupling.
Is the exposed pad (EP) of AP7343Q-15FDZW-7 electrically connected internally?
No - the exposed pad is thermally conductive only and has no internal electrical connection. It must be soldered to a GND copper pour for thermal dissipation but must not be used as a functional GND node. Routing signals or power traces under or adjacent to the EP is discouraged due to potential solder wicking and thermal stress.
AP7343Q-15FDZW-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):
- 1.5V
- 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-15FDZW-7 FAQ
1.How can I place an order for AP7343Q-15FDZW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-15FDZW-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-15FDZW-7 reliable?
The price and inventory of AP7343Q-15FDZW-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-15FDZW-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-15FDZW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-15FDZW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-15FDZW-7?
AP7343Q-15FDZW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-15FDZW-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-15FDZW-7?
For technical support, including AP7343Q-15FDZW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-15FDZW-7 requirements.
6.How does Aetrix verify that AP7343Q-15FDZW-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-15FDZW-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-15FDZW-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-15FDZW-7?
All AP7343Q-15FDZW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-15FDZW-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-15FDZW-7 part is unused and in its original packaging.
Return procedure for AP7343Q-15FDZW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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