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Diodes Incorporated AP7343Q-10W5-7
- Part No.:
- AP7343Q-10W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343Q-10W5-7.pdf
- Description:
- IC REG LINEAR 1V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7343Q-10W5-7 from Diodes Incorporated is an automotive-grade 300mA low-dropout regulator with fixed 1.0V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It operates from 1.7V to 5.25V input and supports AEC-Q100 Grade 1 qualification for infotainment power rails and ADAS point-of-load applications.
For engineers reviewing the AP7343Q-10W5-7 datasheet, AP7343Q-10W5-7 pinout, AP7343Q-10W5-7 application, or AP7343Q-10W5-7 equivalent, key selection criteria include its SOT25 package thermal performance (θJA = 179°C/W), enable-controlled shutdown (ISTANDBY = 0.01µA), and guaranteed 300mA output under -40°C to +125°C ambient conditions.
Technical Context
The AP7343Q-10W5-7 implements a CMOS-based LDO architecture with integrated voltage reference, error amplifier, current limit, and thermal shutdown circuitry. Its fixed 1.0V output is set by an internal resistor network, eliminating external feedback components.
It delivers high PSRR (75dB @ 1kHz) and ultra-low noise (60µVrms) via optimized internal compensation and low-RDS(ON) N-channel pass transistor, enabling stable operation with only 1µF ceramic input/output capacitors in space-constrained automotive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0V ±1% at +25°C; maintains regulation across -40°C to +125°C ambient. |
| Max Output Current | 300mA continuous; foldback short-circuit protection limits current to ~55mA during VOUT-to-GND fault. |
| PSRR | 75dB at 1kHz; suppresses ripple from noisy DC-DC stages feeding RF or camera sensors. |
| Output Noise | 60µVrms (10Hz–100kHz); avoids interference in analog signal chains and PLL reference supplies. |
| Quiescent Current | 35µA typical; enables always-on subsystems (e.g., CAN wake-up logic) without battery drain. |
| Dropout Voltage | 0.46V max at 300mA (1.0V output); allows operation from 1.46V input, supporting wide VIN range down to 1.7V. |
| Enable Threshold | VEN(HI) ≥ 1.3V; compatible with 1.8V/3.3V GPIO without level-shifting in MCU-based ADAS modules. |
Pinout & Package
SOT25 package (3.0mm × 1.7mm × 1.3mm) with exposed pad for thermal dissipation; footprint compatible with standard pick-and-place equipment and reflow profiles for automotive-grade assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main power input; requires 0.47µF ceramic capacitor placed adjacent to minimize input impedance and supply glitches. |
| 2 | EN | Active-high enable; must be driven to ≥1.3V for regulation or ≤0.5V for shutdown; floating prohibited. |
| 3 | GND | Power ground reference; connects to PCB ground plane to reduce trace impedance and improve PSRR. |
| 4 | VOUT | Regulated 1.0V output; routed with wide copper traces to support 300mA load current and minimize IR drop. |
| 5 | NC | No-connect terminal; recommended to tie to GND for enhanced thermal conduction via PCB copper area. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive use from -40°C to +125°C junction temperature with PPAP documentation support. |
| Low-noise 60µVrms output | Enables clean power for RF transceivers and image sensor analog front-ends without additional filtering. |
| 75dB PSRR at 1kHz | Rejects switching noise from upstream buck converters, critical for noise-sensitive camera and radar modules. |
| 35µA quiescent current | Extends battery life in always-on vehicle systems such as telematics and remote keyless entry receivers. |
| Thermal shutdown with 20°C hysteresis | Protects against sustained overload or poor heatsinking; auto-recovery ensures system resilience after fault clearance. |
Applications
| Infotainment Power Supply | Automotive RF Supply |
|---|---|
|
Use Scenario: Powering SoC I/O banks and display interface logic in head-unit systems. IC Role / Device Role / Timing Role: Primary 1.0V LDO delivering stable core voltage for high-speed digital interfaces. Use Value: ±1% output accuracy ensures reliable DDR I/O timing margins; 75dB PSRR prevents audio codec distortion from DC-DC switching noise. |
Use Scenario: Biasing low-noise amplifiers and mixer stages in V2X or cellular modems. IC Role / Device Role / Timing Role: Ultra-low-noise local regulator for RF signal chain bias rails. Use Value: 60µVrms noise floor preserves receiver sensitivity; 300mA output supports multi-stage RF ICs without derating. |
| Camera Module POL | ADAS Sensor Interface |
|
Use Scenario: Providing clean 1.0V supply to CMOS image sensor analog cores and ADC reference circuits. IC Role / Device Role / Timing Role: Point-of-load regulator co-located with image sensor die for minimal loop inductance. Use Value: Low dropout (0.46V max) enables operation from 1.46V input, allowing shared 1.8V rail with other peripherals. |
Use Scenario: Powering radar transceiver ASICs and time-of-flight sensor controllers in driver-assistance ECUs. IC Role / Device Role / Timing Role: Automotive-compliant LDO supplying precision timing and analog bias for mmWave front-ends. Use Value: AEC-Q100 qualification ensures reliability in vibration-prone environments; 35µA IQ supports low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7343Q-10FDZW-7 | Same electrical specs, but W-DFN2020-6 (SWP) Type A1 package (θJA = 54°C/W vs. 179°C/W). | Better thermal performance for high-ambient or high-power-density layouts; requires wettable flank solder inspection. | Select when board-level thermal resistance exceeds 100°C/W and junction temperature margin is critical. |
| TLD1113-10ES | 1.0V fixed LDO, 300mA, but higher IQ (65µA) and lower PSRR (65dB @ 1kHz); AEC-Q100 qualified. | Limited noise immunity in RF-heavy designs; less suitable for camera sensor analog rails. | Choose only if SOT25 footprint compatibility is mandatory and PSRR/noise requirements are relaxed. |
Compared with AP7343Q-10W5-7, the FDZW variant improves thermal management for sustained 300mA loads, while TLD1113-10ES trades PSRR and noise performance for broader distributor availability-making the AP7343Q-10W5-7 optimal for noise-critical automotive LDO applications where SOT25 is preferred.
Availability
AP7343Q-10W5-7 is available at Aetrix Electronics and suitable for infotainment power supplies, automotive RF supplies, and ADAS camera modules requiring stable component supply with full automotive qualification and traceable sourcing.
Supply support for AP7343Q-10W5-7 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 devices for automotive, industrial, and consumer markets.
The AP7343Q belongs to Diodes' automotive-qualified LDO portfolio, designed specifically for noise-sensitive point-of-load applications in ADAS, infotainment, and telematics systems operating across extended temperature ranges.
FAQ
What is the maximum allowable input voltage for AP7343Q-10W5-7?
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, especially at high ambient temperatures. Operation above 5.25V is not characterized per the datasheet and violates recommended conditions.
Can AP7343Q-10W5-7 be used without an external output capacitor?
No. An output capacitor (minimum 1.0µF ceramic) is required for stability and transient response. Omitting COUT causes oscillation and output voltage collapse under load steps, as confirmed by load transient waveforms in the datasheet. The device is optimized for low-ESR ceramics-not for capacitor-less operation.
Is the EN pin internally pulled up or down on AP7343Q-10W5-7?
The EN pin has no internal pull-up or pull-down; it must be actively driven to ≥1.3V for enable or ≤0.5V for shutdown. Leaving it floating risks undefined operation due to noise coupling, and the datasheet explicitly states "must not be floating." Tie to VIN only if always-on operation is required.
Does AP7343Q-10W5-7 include output discharge functionality?
No. The "Q" suffix (as in AP7343Q) denotes non-discharge version. Only AP7343DQ variants integrate an internal discharge FET. For AP7343Q-10W5-7, VOUT remains active after EN deactivation until external load discharges the output capacitor-critical for sequencing-sensitive systems.
AP7343Q-10W5-7 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):
- 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
AP7343Q-10W5-7 FAQ
1.How can I place an order for AP7343Q-10W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343Q-10W5-7 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-10W5-7 reliable?
The price and inventory of AP7343Q-10W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343Q-10W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343Q-10W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343Q-10W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343Q-10W5-7?
AP7343Q-10W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343Q-10W5-7 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-10W5-7?
For technical support, including AP7343Q-10W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343Q-10W5-7 requirements.
6.How does Aetrix verify that AP7343Q-10W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343Q-10W5-7 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-10W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343Q-10W5-7?
All AP7343Q-10W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343Q-10W5-7, 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-10W5-7 part is unused and in its original packaging.
Return procedure for AP7343Q-10W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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