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Diodes Incorporated AP7343Q-25W5-7
- Part No.:
- AP7343Q-25W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343Q-25W5-7.pdf
- Description:
- IC REG LINEAR 2.5V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
AP7343Q-25W5-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive-compliant low-dropout regulator delivering fixed 2.5V output at up to 300mA, with ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It operates from 1.7V to 5.25V input, features enable control, thermal shutdown, and short-circuit protection, and is optimized for noise-sensitive ADAS camera and RF power supplies.
For engineers reviewing the AP7343Q-25W5-7 datasheet, AP7343Q-25W5-7 pinout, AP7343Q-25W5-7 application, or AP7343Q-25W5-7 equivalent, key selection criteria include guaranteed 300mA load capability in SOT25, automotive-grade qualification (IATF 16949, PPAP-capable), low 35µA quiescent current, and validated performance across –40°C to +125°C ambient temperature.
Technical Context
The AP7343Q-25W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and thermal shutdown logic. Its architecture delivers fast line/load transient response without requiring external compensation, enabled by internal resistor network for fixed 2.5V output.
It supports active enable control (EN pin thresholds: 0–0.5V low, 1.3–5.25V high), includes foldback short-circuit protection (~55mA), and achieves 0.25V typical dropout at 300mA (VOUT = 2.5V), with thermal resistance θJA = 179°C/W in SOT25 package.
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 continuous; sustains full load under worst-case VIN = 3.5V and TA = +125°C. |
| PSRR | 75dB at 1kHz; suppresses ripple from noisy DC-DC stages feeding infotainment or RF subsystems. |
| Output Noise | 60µVrms (10Hz–100kHz); enables clean biasing of automotive image sensors and RF synthesizers. |
| Quiescent Current | 35µA typical; minimizes standby power loss in always-on ADAS modules. |
| Dropout Voltage | 0.25V typical at 300mA (VIN ≥ 2.75V required for full 2.5V regulation). |
| Operating Temp | –40°C to +125°C ambient; qualified per AEC-Q100 Grade 1 for under-hood and cabin applications. |
Pinout & Package
AP7343Q-25W5-7 is packaged in SOT25 (5-pin, 2.9mm × 2.8mm × 1.3mm), with exposed pad not electrically connected - recommended for thermal copper tie to GND.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 | EN | Active-high enable; must be driven to ≥1.3V to activate regulator; floating prohibited. |
| 3 | GND | Analog/digital ground reference; connects to PCB ground plane for low-impedance return path. |
| 4 | VOUT | Regulated 2.5V output; requires ≥1µF ceramic capacitor placed within 2mm of pin for stability. |
| 5 | NC | No-connect terminal; internally unconnected; recommended to tie to GND for thermal enhancement. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1, PPAP-capable, manufactured in IATF 16949-certified facilities. |
| Low-Noise Regulation | 60µVrms output noise enables direct powering of RF ICs and high-resolution image sensors. |
| High PSRR | 75dB at 1kHz ensures rejection of switching noise from upstream DC-DC converters. |
| Ultra-Low IQ | 35µA quiescent current extends battery life in always-on vehicle systems (e.g., telematics wake-up). |
| Thermal Protection | 150°C junction shutdown with 20°C hysteresis prevents damage during sustained overload or poor heatsinking. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
|
Use Scenario: Stable 2.5V rail for digital audio processors and display controllers in head units. IC Role / Device Role / Timing Role: Primary LDO providing clean, regulated voltage to noise-sensitive SoC I/O and memory interfaces. Use Value: ±1% output accuracy and 75dB PSRR prevent audible artifacts and display glitches caused by power rail noise. |
Use Scenario: Bias supply for VCOs, PLLs, and low-noise amplifiers in cellular/V2X modems. IC Role / Device Role / Timing Role: Low-noise post-regulator isolating RF section from noisy main 3.3V/5V domains. Use Value: 60µVrms noise floor preserves phase noise performance and receiver sensitivity. |
| ADAS Camera POL | Automotive Wireless Communications |
|
Use Scenario: Point-of-load regulation for CMOS image sensor analog front-end and ADC reference. IC Role / Device Role / Timing Role: High-accuracy, low-dropout LDO delivering precise 2.5V to sensor pixel array and timing circuits. Use Value: 0.25V dropout at 300mA allows operation from 2.75V input, enabling efficient use of intermediate bus rails. |
Use Scenario: Powering Bluetooth/Wi-Fi transceivers and GNSS receivers in gateway modules. IC Role / Device Role / Timing Role: Enable-controlled LDO supporting low-power sleep/wake cycles in wireless subsystems. Use Value: 35µA quiescent current and fast EN turn-on (<200µs) minimize system-level standby power and latency. |
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 | Same electrical specs, but in W-DFN2020-6 (SWP) Type A1 package (θJA = 54°C/W vs. 179°C/W). | Better thermal performance for higher ambient or sustained 300mA loads; requires different PCB footprint and reflow profile. | Select when thermal margin is constrained and board space permits smaller 2.0mm × 2.0mm footprint. |
| TLD1120FV-25 | 2.5V, 300mA AEC-Q100 LDO with integrated watchdog timer and diagnostic pins; higher IQ (65µA). | Supports functional safety monitoring (ISO 26262 ASIL-B ready); adds complexity for basic regulation needs. | Select only if system-level diagnostics or fail-safe behavior are required beyond basic voltage regulation. |
Compared with AP7343Q-25FDZW-7, the SOT25 variant offers simpler assembly and legacy compatibility; versus TLD1120FV-25, it provides lower cost and lower IQ where diagnostics are unnecessary.
Availability
AP7343Q-25W5-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera power, and wireless communications modules requiring stable component supply with full AEC-Q100 traceability and PPAP support.
Supply support for AP7343Q-25W5-7 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 belongs to Diodes' automotive-qualified LDO portfolio, designed specifically for noise-sensitive point-of-load regulation in ADAS, infotainment, and telematics systems operating across extended temperature ranges.
FAQ
What is the minimum input voltage required for AP7343Q-25W5-7 to maintain 2.5V output at 300mA?
The minimum input voltage is 2.75V, based on the typical 0.25V dropout voltage at 300mA load and 2.5V nominal output. At worst-case conditions (–40°C to +125°C, 300mA), dropout may reach 0.36V, requiring VIN ≥ 2.86V for guaranteed regulation. Input must remain within 1.7V–5.25V operating range.
Can the EN pin be left unconnected or tied to VIN?
No - the EN pin must never be left floating. If enable functionality is unused, it must be hard-wired to VIN (not through a resistor) to ensure reliable turn-on. Floating EN causes undefined regulator state and potential oscillation due to noise coupling, violating functional safety requirements for automotive use.
Is AP7343Q-25W5-7 compatible with 1µF ceramic output capacitors?
Yes - the device is explicitly characterized and stable with 1µF X5R/X7R ceramic capacitors (ESR < 10mΩ). Layout best practice requires placing COUT within 2mm of VOUT and GND pins, using short wide traces, and connecting GND to a solid ground plane to maintain PSRR and transient response performance.
Does AP7343Q-25W5-7 include output discharge functionality?
No - AP7343Q-25W5-7 is the non-discharge variant (suffix 'Q' without 'D'). It lacks an internal discharge FET; VOUT will decay only through load leakage or external bleed resistors. For rapid VOUT discharge on shutdown, select AP7343DQ-25W5-7, which integrates a 30Ω discharge path.
AP7343Q-25W5-7 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 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
AP7343Q-25W5-7 FAQ
1.How can I place an order for AP7343Q-25W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-25W5-7 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-25W5-7 reliable?
The price and inventory of AP7343Q-25W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343Q-25W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-25W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-25W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-25W5-7?
AP7343Q-25W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-25W5-7 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-25W5-7?
For technical support, including AP7343Q-25W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-25W5-7 requirements.
6.How does Aetrix verify that AP7343Q-25W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-25W5-7 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-25W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-25W5-7?
All AP7343Q-25W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-25W5-7, 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-25W5-7 part is unused and in its original packaging.
Return procedure for AP7343Q-25W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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