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Diodes Incorporated AP63201QWU-7
- Part No.:
- AP63201QWU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP63201QWU-7.pdf
- Description:
- IC REG BUCK ADJ 2A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:8,843
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Product details
Overview
AP63201QWU-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter with integrated 125mΩ high-side and 68mΩ low-side MOSFETs, delivering 2A continuous output current across 3.8V–32V input range. It features 500kHz fixed switching frequency, 0.8V ±1% reference voltage, and Pulse Width Modulation (PWM) operation regardless of load-enabling stable regulation in automotive body electronics and instrument clusters.
For engineers reviewing the AP63201QWU-7 datasheet, AP63201QWU-7 pinout, AP63201QWU-7 application, or AP63201QWU-7 equivalent, key selection considerations include its PWM-only control mode (no PFM), -40°C to +125°C ambient operation, TSOT26 package thermal resistance (θJA = 89°C/W), and precision enable threshold (1.18V) for UVLO adjustment in 12V/24V automotive systems.
Technical Context
The AP63201QWU-7 uses peak current mode control with fully integrated loop compensation, eliminating external compensation components. Its proprietary gate driver suppresses switching node ringing without extending turn-on/turn-off times, directly reducing high-frequency radiated EMI.
Unlike AP63200Q/AP63203Q/AP63205Q variants, AP63201QWU-7 operates exclusively in PWM mode-ensuring constant frequency under all load conditions-and lacks Frequency Spread Spectrum (FSS). It supports low-dropout (LDO) mode and includes cycle-by-cycle overcurrent protection, thermal shutdown (+160°C), and output overvoltage protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 32V DC - supports full automotive battery range including cold-crank (4.5V) and load-dump (32V) transients. |
| VOUT Range | 0.8V to VIN - adjustable via external resistor divider; enables flexible rail generation for MCU cores, sensors, and peripherals. |
| fSW | 500kHz ±10% - fixed frequency simplifies EMI filter design and avoids audible noise in cabin systems. |
| IOUT | 2A continuous - sufficient for powering ADAS camera modules, display backlight drivers, or infotainment SoCs. |
| IQ | 370μA typical - higher than PFM variants but ensures consistent transient response and no mode-switching artifacts. |
| VFB Accuracy | 0.800V ±1% - enables ±1% output voltage tolerance at 5V or 3.3V when using standard 1% resistors. |
| RDS(ON) HS / LS | 125mΩ / 68mΩ - low conduction losses support >85% efficiency at 2A/5V from 12V input. |
Pinout & Package
AP63201QWU-7 is housed in a thermally enhanced TSOT26 package (2.9mm × 1.6mm × 0.85mm), optimized for automotive PCB layouts with exposed thermal pad (pin 4 GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback sensing input | Connects to resistor divider midpoint; regulates output by comparing against 0.8V internal reference. |
| EN (Pin 2) | Enable control input | Digital on/off control with 1.18V precision threshold; floating or tied to VIN for automatic startup. |
| VIN (Pin 3) | Main power input | Supplies IC bias and high/low-side MOSFETs; requires local 10µF ceramic bypass capacitor. |
| GND (Pin 4) | Power ground reference | Common return path for VIN, SW, BST, and FB; must connect to thermal pad for optimal θJA. |
| SW (Pin 5) | Switching node output | Drives external LC filter; connects to inductor and bootstrap capacitor (BST–SW). |
| BST (Pin 6) | Bootstrap supply for high-side gate | Requires 100nF ceramic capacitor between BST and SW to sustain high-side N-MOSFET drive during duty cycles >50%. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-only operation | Guarantees constant 500kHz switching under all loads-eliminates PFM-induced output voltage ripple and frequency modulation artifacts critical for noise-sensitive analog circuits. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation and manufactured in IATF 16949-certified facilities-meets functional safety requirements for ASIL-B systems. |
| Integrated MOSFETs | 125mΩ high-side + 68mΩ low-side reduce BOM count and layout area while maintaining >88% efficiency at light loads (5mA). |
| Proprietary gate driver | Minimizes switching node ringing without increasing MOSFET transition times-reduces high-frequency EMI emissions without degrading efficiency. |
| Comprehensive protection | Includes undervoltage lockout (UVLO), output overvoltage protection (OVP), cycle-by-cycle current limiting, and thermal shutdown with 25°C hysteresis. |
Applications
| Automotive Instrument Clusters | Automotive Body Control Modules |
|---|---|
Use Scenario: Powering digital gauges, TFT LCD controllers, and CAN transceivers in dashboard assemblies. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator supplying microcontroller, display driver, and sensor interface rails. Use Value: PWM-only operation ensures stable clock domains and eliminates audible coil whine during variable-speed fan or motor control sequences. |
Use Scenario: Regulating power for door module ECUs, seat position memory, and interior lighting drivers. IC Role / Device Role / Timing Role: High-efficiency buck converter delivering 2A at 5V from 12V battery rail with robust transient response. Use Value: Integrated OVP and thermal shutdown prevent latch-up during short-circuit events in wiring harnesses exposed to vibration and temperature cycling. |
| Automotive Telematics Units | Advanced Driver Assistance Systems |
Use Scenario: Supplying GPS receivers, cellular modems, and Wi-Fi/BT SoCs in connected car gateways. IC Role / Device Role / Timing Role: Secondary power stage converting 12V to 3.3V for RF front-end and baseband processors. Use Value: Low 370μA quiescent current extends battery runtime during vehicle sleep mode while maintaining fast wake-up capability. |
Use Scenario: Powering radar sensor SoCs, camera ISPs, and vision processing units in forward collision warning systems. IC Role / Device Role / Timing Role: Main 5V rail generator with tight output regulation (±1%) and fast load transient recovery (<100μs). Use Value: Precision 0.8V reference and integrated current limit ensure reliable operation during ESD events and electrical fast transients per ISO 16750-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP63200QWU-7 | Same package and pinout; supports PFM mode (22μA IQ) and FSS; 500kHz switching. | Better suited for ultra-low-power sleep modes where IQ <50μA is required; less ideal for noise-sensitive analog signal chains due to frequency modulation. | Select AP63200QWU-7 if system prioritizes lowest standby current over strict EMI spectral purity. |
| MPQ4420AGQB-Z | Monolithic 2A buck with 3.8V–36V input, 500kHz, but no AEC-Q100 qualification; RDS(ON) = 130mΩ/75mΩ. | Targeted at industrial/commercial designs-not validated for automotive temperature or reliability requirements. | Choose MPQ4420AGQB-Z only for non-automotive applications where AEC-Q100 compliance is not mandated. |
Compared with AP63200QWU-7, AP63201QWU-7 trades lower quiescent current for deterministic PWM timing and tighter EMI control; versus MPQ4420AGQB-Z, it delivers certified automotive reliability at the cost of broader commercial availability.
Availability
AP63201QWU-7 is available at Aetrix Electronics and suitable for automotive instrument clusters, telematics gateways, and ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP63201QWU-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 solutions with strong focus on automotive, industrial, and power management applications.
The AP6320xQ series belongs to Diodes' automotive-grade DC-DC converter product line, designed specifically to replace legacy linear regulators and discrete buck solutions in harsh-temperature vehicle subsystems.
FAQ
What is the minimum recommended input voltage for reliable startup?
The AP63201QWU-7 has a VIN power-on reset (POR) rising threshold of 3.5V and an undervoltage lockout (UVLO) falling threshold of 3.06V. Reliable startup requires VIN ≥3.5V with monotonic ramp-up; below 3.06V, the device remains latched off until VIN exceeds 3.5V again. This ensures clean sequencing during cold-crank conditions.
Can the output voltage be set below 0.8V using external feedback?
No. The internal reference is fixed at 0.8V ±1%, and the feedback amplifier is designed for VOUT ≥ 0.8V. Attempting to set VOUT below 0.8V violates the error amplifier's common-mode input range and results in loss of regulation. For sub-0.8V outputs, a dedicated low-VOUT buck controller or post-regulation LDO is required.
Is the BST capacitor mandatory, and what value is recommended?
Yes-the BST capacitor is mandatory for high-side gate drive. A 100nF X7R ceramic capacitor rated ≥16V must be placed between BST and SW pins, with minimal trace length. This capacitor supplies charge to the high-side MOSFET gate during each switching cycle; omission causes immediate failure due to insufficient gate voltage.
Does AP63201QWU-7 support forced continuous conduction mode (FCCM)?
No. AP63201QWU-7 operates exclusively in PWM mode across all load conditions-there is no skip-cycle or burst-mode option. Unlike PFM-capable variants (e.g., AP63200Q), it maintains constant 500kHz frequency down to zero load, ensuring predictable EMI spectrum and eliminating low-frequency output ripple.
AP63201QWU-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:
- 2A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
AP63201QWU-7 FAQ
1.How can I place an order for AP63201QWU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP63201QWU-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 AP63201QWU-7 reliable?
The price and inventory of AP63201QWU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP63201QWU-7 is usually 5 days.
3.What payment methods are accepted for AP63201QWU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP63201QWU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP63201QWU-7?
AP63201QWU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP63201QWU-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 AP63201QWU-7?
For technical support, including AP63201QWU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP63201QWU-7 requirements.
6.How does Aetrix verify that AP63201QWU-7 is sourced from the original manufacturer or authorized distributors?
All AP63201QWU-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 AP63201QWU-7 meets industry standards.
7.What is the process for return or replacement of AP63201QWU-7?
All AP63201QWU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP63201QWU-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 AP63201QWU-7 part is unused and in its original packaging.
Return procedure for AP63201QWU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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