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Diodes Incorporated AP63301QWU-7
- Part No.:
- AP63301QWU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP63301QWU-7.pdf
- Description:
- IC REG BUCK ADJ 3A TSOT26
- Quantity:
- Payment:
- Shipping:
Inventory:2,240
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Product details
Overview
AP63301QWU-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering 3A continuous output current with 3.8V–32V input range, 0.8V–VIN adjustable output, and fixed 500kHz PWM operation. It integrates 75mΩ high-side and 40mΩ low-side MOSFETs, supports precision enable threshold (1.18V), and operates across –40°C to +125°C ambient for body electronics and infotainment power rails.
For engineers reviewing the AP63301QWU-7 datasheet, AP63301QWU-7 pinout, AP63301QWU-7 application, or AP63301QWU-7 equivalent, this page delivers verified technical context, EMI-optimized gate drive behavior, thermal shutdown at +160°C, soft-start timing, and functional distinctions versus AP63300Q - all critical for automotive DC-DC selection and layout validation.
Technical Context
The AP63301QWU-7 employs fixed-frequency peak current mode control with a 500kHz oscillator and built-in slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its error amplifier compares FB voltage against a 0.800V ±1% internal reference to regulate output voltage via COMP node modulation.
Unlike the AP63300Q, the AP63301QWU-7 operates in forced PWM mode across all load conditions - eliminating PFM transitions and ensuring consistent switching frequency, minimal output ripple at light loads, and predictable EMI profile. It features a proprietary multi-level gate driver that suppresses SW node ringing without degrading rise/fall times or efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 32V DC - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (32V). |
| IOUT Max | 3A continuous - enables single-chip 5V/3.3V supply for microcontrollers, displays, and sensors in instrument clusters. |
| fSW | 500kHz ±10% - fixed frequency simplifies EMI filter design and avoids audible noise in telematics modules. |
| VFB Accuracy | 0.800V ±1% - ensures ≤±1.6% output voltage tolerance over temperature and line/load for safety-critical systems. |
| IQ (No Load) | 280μA typical - optimized for always-on domains requiring low standby consumption without PFM trade-offs. |
| RDS(ON) HS/LG | 75mΩ / 40mΩ - integrated MOSFETs reduce BOM count and PCB area vs. controller+external FET solutions. |
| TJ Max | +150°C - supports operation under hood or near engine control units with validated thermal derating. |
Pinout & Package
AP63301QWU-7 is housed in a thermally enhanced TSOT26 package (2.9mm × 1.6mm × 0.6mm, 0.95mm pitch), optimized for automotive PCB space constraints and thermal dissipation (θJA = 89°C/W on 2oz FR-4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback sensing input | Connects to resistor divider to set VOUT; 0.8V reference enables precise regulation independent of VIN or load. |
| EN (Pin 2) | Enable control input | Logic-high threshold at 1.18V allows direct VIN tie-off or MCU GPIO control; internal 1.5μA pull-up enables auto-start. |
| VIN (Pin 3) | Main power input | Accepts 3.8–32V; requires local 10μF ceramic bypass to suppress switching noise and stabilize internal LDO. |
| GND (Pin 4) | Power ground reference | Common return for VIN, SW, BST, and FB; must be low-impedance plane to minimize EMI and thermal resistance. |
| SW (Pin 5) | Switching node output | Drives external inductor; high di/dt path requiring tight loop layout and Kelvin connection to GND for ringing suppression. |
| BST (Pin 6) | Bootstrap capacitor connection | Requires 100nF ceramic cap to SW to sustain high-side gate drive; placement critical for MOSFET turn-on robustness. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C TA operation in IATF 16949 facilities - meets automotive change control and PPAP requirements. |
| Proprietary ringing-free gate driver | Eliminates SW node oscillation >100MHz without slowing edge rates - reduces radiated EMI by >6dB in 30–1000MHz band. |
| Integrated protection suite | Includes cycle-by-cycle OCP (4.5A typ), output OVP (+10%), thermal shutdown (+160°C), and UVLO (3.06V fall). |
| 4ms internal soft-start | Prevents output overshoot and inrush current during power-up - eliminates need for external SS capacitor in most designs. |
| Precision enable threshold | 1.18V rising threshold with ±70mV hysteresis enables accurate sequencing and programmable UVLO using external resistor divider. |
Applications
| Automotive Instrument Clusters | Automotive Infotainment Systems |
|---|---|
Use Scenario: Powering TFT LCD display, touch controller, and audio codec in digital dashboards with 12V battery input. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator supplying core logic and analog subsystems. Use Value: Fixed 500kHz PWM ensures stable ripple performance at 50mA–3A loads, avoiding display flicker or audio artifacts. |
Use Scenario: Generating clean 3.3V rail for SoC, Wi-Fi/BT module, and USB interface in head-unit designs. IC Role / Device Role / Timing Role: High-efficiency buck converter operating continuously in PWM mode to maintain signal integrity. Use Value: 280μA quiescent current and AEC-Q100 qualification support always-on connectivity without battery drain. |
| Automotive Body Control Modules | Advanced Driver Assistance Systems |
Use Scenario: Supplying 5V to door module MCUs, LED drivers, and LIN transceivers in centralized body electronics. IC Role / Device Role / Timing Role: Robust DC-DC stage handling load dump (32V) and cold crank (4.5V) without dropout or reset. Use Value: Integrated 75mΩ/40mΩ MOSFETs and thermal shutdown ensure reliable operation under under-hood temperature stress. |
Use Scenario: Providing regulated 5V for radar sensor processing unit and camera ISP in ADAS domain controllers. IC Role / Device Role / Timing Role: EMI-optimized power stage meeting CISPR 25 Class 5 radiated emissions limits. Use Value: Proprietary gate driver and fixed-frequency operation simplify compliance testing and reduce shielding cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP63300QWU-7 | Supports PFM mode (22μA IQ) and Frequency Spread Spectrum (±6% jitter); lacks forced PWM guarantee. | Better suited for ultra-low-power always-on nodes where light-load efficiency dominates EMI predictability. | Select when system prioritizes <100μA standby current over strict EMI spectral consistency. |
| MPQ4433AGL-AEC1-P | 4A rating, 2.5–36V input, 500kHz, but requires external compensation and has higher 350μA IQ in PWM mode. | Used in higher-current ADAS ECUs; less integrated than AP63301QWU-7 due to external loop components. | Choose only if >3A output or extended VIN beyond 32V is required - adds design complexity and footprint. |
Compared with AP63300QWU-7, AP63301QWU-7 trades light-load efficiency for deterministic EMI and ripple control; versus MPQ4433AGL-AEC1-P, it offers lower BOM count and tighter VFB accuracy at the expense of peak current headroom.
Availability
AP63301QWU-7 is available at Aetrix Electronics and suitable for automotive instrument clusters, infotainment systems, and body control modules requiring stable component supply, AEC-Q100 traceability, and long-term production continuity.
Supply support for AP63301QWU-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 manufacturer specializing in discrete, analog, and mixed-signal ICs for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing.
The AP63300Q/AP63301Q product line targets automotive power conversion with emphasis on EMI resilience, AEC-Q100 compliance, and minimal external component count for space-constrained ECUs.
FAQ
What distinguishes AP63301QWU-7 from AP63300QWU-7 in system-level operation?
The AP63301QWU-7 operates exclusively in forced PWM mode across all load conditions, ensuring constant 500kHz switching frequency, predictable EMI spectrum, and minimal output voltage ripple at light loads. In contrast, AP63300QWU-7 enters PFM below ~930mA, reducing quiescent current to 22μA but introducing variable frequency and potential beat frequencies in multi-rail systems.
Can AP63301QWU-7 safely handle automotive load dump events?
Yes. The device supports up to +35V DC on VIN per absolute maximum ratings and is rated for 400ms at +40V transient. Combined with integrated OVP (10% above nominal VOUT) and thermal shutdown at +160°C, it withstands standard ISO 16750-2 load dump profiles when paired with appropriate input TVS and bulk capacitance.
How does the proprietary gate driver reduce EMI without impacting efficiency?
The multi-level gate driver actively damps SW node ringing by modulating gate drive strength during critical transition edges, suppressing high-frequency oscillations (>100MHz) while preserving fast MOSFET turn-on/turn-off slew rates. This maintains conduction and switching efficiency - confirmed by 88% efficiency at 3A/12V→5V - without added external snubbers.
Is external compensation required for AP63301QWU-7 stability?
No. The device integrates a complete loop compensation network optimized for standard 6.8μH inductors and 22μF output capacitors. Stability is guaranteed across full operating range (–40°C to +125°C, 3.8–32V VIN, 0.8–VIN VOUT) without external compensation components, reducing design risk and board area.
AP63301QWU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.8V
- Voltage - Input (Max):
- 32V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 32V
- Current - Output:
- 3A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-26
AP63301QWU-7 FAQ
1.How can I place an order for AP63301QWU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP63301QWU-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 AP63301QWU-7 reliable?
The price and inventory of AP63301QWU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP63301QWU-7 is usually 5 days.
3.What payment methods are accepted for AP63301QWU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP63301QWU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP63301QWU-7?
AP63301QWU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP63301QWU-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 AP63301QWU-7?
For technical support, including AP63301QWU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP63301QWU-7 requirements.
6.How does Aetrix verify that AP63301QWU-7 is sourced from the original manufacturer or authorized distributors?
All AP63301QWU-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 AP63301QWU-7 meets industry standards.
7.What is the process for return or replacement of AP63301QWU-7?
All AP63301QWU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP63301QWU-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 AP63301QWU-7 part is unused and in its original packaging.
Return procedure for AP63301QWU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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