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Diodes Incorporated AP7343DQ-11W5-7
- Part No.:
- AP7343DQ-11W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343DQ-11W5-7.pdf
- Description:
- IC REG LINEAR 1.1V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,438
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Product details
Overview
AP7343DQ-11W5-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout linear regulator with fixed 1.1V 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 SoC core supplies.
For engineers reviewing the AP7343DQ-11W5-7 datasheet, AP7343DQ-11W5-7 pinout, AP7343DQ-11W5-7 application, or AP7343DQ-11W5-7 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, SOT25 package thermal performance (θJA = 179°C/W), enable-controlled shutdown (ISTANDBY = 0.01µA), and dropout voltage of 0.46V at 300mA for 1.1V output.
Technical Context
The AP7343DQ-11W5-7 implements a CMOS-based LDO architecture with integrated 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 leakage < ±1.0µA.
It delivers stable 1.1V output across –40°C to +125°C ambient, supports input voltages from 1.7V to 5.25V, and maintains regulation under fast load transients (1mA ↔ 300mA) with minimal output deviation when paired with 1µF ceramic COUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1V ±1% at +25°C; ensures precise core rail for low-voltage microcontrollers and sensor interfaces. |
| Max Output Current | 300mA guaranteed; sufficient for powering single-core automotive MCUs or image signal processors. |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters in mixed-signal domains. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean analog supply for RF receivers and high-resolution ADCs. |
| Quiescent Current | 35µA typical; minimizes standby power loss in always-on automotive subsystems. |
| Dropout Voltage | 0.46V max at 300mA (1.1V output); allows operation from 1.56V minimum input, supporting wide battery range. |
| Operating Temp | –40°C to +125°C ambient; qualified for under-hood and cabin-mounted ADAS applications. |
Pinout & Package
AP7343DQ-11W5-7 is packaged in SOT25 - a 5-pin surface-mount package with exposed pad not present; footprint optimized for thermal dissipation via PCB copper area under pins 2 (GND) and 4 (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin to suppress supply glitches. |
| 2 | GND | Analog/digital ground reference; must connect directly to low-impedance PCB ground plane to minimize noise coupling. |
| 3 | EN | Active-high enable; drives regulator ON when ≥1.3V, OFF when ≤0.5V; floating prohibited - tie to VIN if unused. |
| 4 | NC | No-connect terminal; recommended to tie to GND to enhance thermal conduction and reduce EMI susceptibility. |
| 5 | VOUT | Regulated 1.1V output; requires 1µF ceramic capacitor near pin to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 | Qualified for automotive use up to +125°C ambient; supports PPAP documentation and IATF 16949 manufacturing. |
| Low-Noise Regulation | 60µVrms output noise enables direct powering of RF front-ends and precision analog sensors without additional filtering. |
| Ultra-Low Quiescent Current | 35µA operating / 0.01µA shutdown current extends battery life in always-on vehicle modules like telematics wake-up circuits. |
| High PSRR at Low Frequencies | 75dB rejection at 1kHz mitigates ripple from buck converter switching frequencies and their harmonics in multi-rail systems. |
| Integrated Discharge Path | Internal NMOS discharge transistor (RON ≈ 30Ω) actively pulls VOUT to GND during disable, preventing floating outputs in safety-critical paths. |
Applications
| Infotainment Power Supply | Automotive Camera Module |
|---|---|
Use Scenario: Providing clean 1.1V core supply to ARM Cortex-A53 application processor in head-unit systems. IC Role / Device Role / Timing Role: Primary LDO for SoC core rail, delivering regulated voltage independent of battery fluctuations and DC/DC switching noise. Use Value: 75dB PSRR and 60µVrms noise prevent digital switching artifacts from corrupting audio DAC output and display timing signals. |
Use Scenario: Powering image signal processor (ISP) and CIS sensor analog front-end in rear-view camera ECU. IC Role / Device Role / Timing Role: Low-noise bias source for pixel readout circuitry and ADC reference, requiring stable 1.1V under thermal cycling. Use Value: ±1% output accuracy and –40°C to +125°C operation ensure consistent image quality across vehicle lifetime and environmental extremes. |
| ADAS POL for Radar MCU | Automotive Wireless Comms |
Use Scenario: Point-of-load regulation for 1.1V core voltage of 77GHz radar microcontroller in front bumper module. IC Role / Device Role / Timing Role: Local LDO supplying MCU core logic, enabling fast enable/disable control synchronized with radar pulse timing. Use Value: 35µA quiescent current and 0.01µA shutdown current minimize system-level sleep-mode power, extending functional safety monitoring duration. |
Use Scenario: Regulating 1.1V supply for Bluetooth LE and Wi-Fi 6 companion ICs in connected gateway modules. IC Role / Device Role / Timing Role: Dedicated LDO isolating wireless PHY from noisy main system rails, with EN pin tied to host MCU GPIO for coordinated power gating. Use Value: Integrated discharge path prevents residual charge on VOUT from interfering with subsequent radio initialization sequences after wake-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361DQ-11W5-7 | 600mA output current, higher dropout (0.6V @ 600mA), same 1.1V fixed output and AEC-Q100 Grade 1 rating. | Suitable where higher load current is required, e.g., dual-core radar processors; larger thermal footprint needed. | Select when >300mA sustained load is expected; verify θJA derating in constrained PCB layouts. |
| TLD1113-11ES | 1.1V fixed output, 350mA, 65dB PSRR @ 1kHz, 45µVrms noise, but no integrated discharge path. | Lacks active VOUT discharge; requires external circuitry for safe power-down sequencing in ASIL-B designs. | Prefer when ultra-low noise is secondary to cost; confirm system-level discharge compliance if used in safety-critical paths. |
Compared with AP7343DQ-11W5-7, AP7361DQ-11W5-7 trades higher current capability for increased dropout and thermal demand, while TLD1113-11ES offers marginally lower noise but omits the critical discharge function required for deterministic power-state transitions in automotive ECUs.
Availability
AP7343DQ-11W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and wireless communication gateways requiring stable component supply with full AEC-Q100 traceability and PPAP support.
Supply support for AP7343DQ-11W5-7 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, computing, and consumer markets.
The AP7343Q series targets automotive power management with AEC-Q100 qualification, focusing on low-noise, high-PSRR LDOs for safety-critical and noise-sensitive subsystems including ADAS, infotainment, and telematics.
FAQ
What is the maximum input voltage for AP7343DQ-11W5-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V may degrade long-term reliability or trigger overvoltage protection in adjacent circuitry. Operation above 5.25V is not characterized per datasheet specifications.
Does AP7343DQ-11W5-7 require an external discharge resistor?
No - AP7343DQ-11W5-7 integrates an internal NMOS discharge transistor (RON ≈ 30Ω) that actively pulls VOUT to GND when EN is low. This eliminates need for external components and ensures rapid, controlled discharge essential for automotive functional safety requirements.
Can AP7343DQ-11W5-7 be used with ceramic output capacitors smaller than 1µF?
The device is stable with 1µF ceramic output capacitors, and the datasheet does not characterize stability below this value. Using <1µF risks instability under load transients or elevated temperature; Diodes Incorporated recommends maintaining ≥1µF X7R/X5R ceramic COUT placed within 2mm of VOUT and GND pins.
How does the NC pin affect thermal performance in SOT25 package?
Pin 4 (NC) is internally unconnected but thermally coupled to the die. Connecting it to GND expands the effective copper area for heat spreading, reducing θJA by up to 15°C/W in typical 2-layer PCB layouts - a verified layout practice documented in Diodes' thermal application notes for SOT25 LDOs.
AP7343DQ-11W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 1.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.72V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7343DQ-11W5-7 FAQ
1.How can I place an order for AP7343DQ-11W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343DQ-11W5-7 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-11W5-7 reliable?
The price and inventory of AP7343DQ-11W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343DQ-11W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343DQ-11W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343DQ-11W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343DQ-11W5-7?
AP7343DQ-11W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343DQ-11W5-7 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-11W5-7?
For technical support, including AP7343DQ-11W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343DQ-11W5-7 requirements.
6.How does Aetrix verify that AP7343DQ-11W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343DQ-11W5-7 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-11W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343DQ-11W5-7?
All AP7343DQ-11W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343DQ-11W5-7, 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-11W5-7 part is unused and in its original packaging.
Return procedure for AP7343DQ-11W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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