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Diodes Incorporated AP63356QZV-7
- Part No.:
- AP63356QZV-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 13-PowerVFDFN
- Datasheet:
-
AP63356QZV-7.pdf
- Description:
- IC REG BUCK ADJ 3.5A 13DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,667
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Product details
Overview
AP63356QZV-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering 3.5A continuous output from a 3.8V–32V input, featuring integrated 74mΩ/40mΩ MOSFETs, 450kHz fixed-frequency PWM operation, and 0.8V ±1% feedback reference. It targets 12V/24V automotive power rails for infotainment, instrument clusters, and ADAS subsystems.
For engineers reviewing the AP63356QZV-7 datasheet, AP63356QZV-7 pinout, AP63356QZV-7 application, or AP63356QZV-7 equivalent, this device offers verified EMI reduction via ringing-free gate drive and ±6% frequency spread spectrum, low 22µA quiescent current in PFM mode (AP63357Q variant), and precision enable threshold for programmable UVLO.
Technical Context
The AP63356QZV-7 employs peak current mode control with internal slope compensation to ensure stability at duty cycles >50%, and integrates loop compensation to eliminate external RC networks. Its proprietary multi-level gate driver suppresses switching node ringing without degrading rise/fall times, directly reducing high-frequency radiated EMI.
It features a 4ms internal soft-start, open-drain Power-Good (PG) with 5MΩ pull-up, and supports low-dropout (LDO) mode during input voltage sag. The EN pin provides precise 1.18V enable threshold and enables UVLO programming via external resistor dividers.
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. |
| Output Current | 3.5A continuous - sufficient for powering SoCs, displays, and sensor modules in body electronics and telematics. |
| Feedback Voltage | 0.800V ±1% - enables accurate output regulation across temperature (-40°C to +125°C ambient) with minimal external resistor tolerance impact. |
| Quiescent Current | 22µA typical (PFM mode) - extends battery life in always-on vehicle systems such as alarm controllers and CAN gateways. |
| Switching Frequency | 450kHz fixed - allows compact magnetics (e.g., 6.8µH inductor) while staying below AM radio band to ease EMI filtering. |
| EMI Reduction | Proprietary gate driver + ±6% FSS - measurably lowers peak radiated emissions per CISPR 25 Class 5 requirements without snubbers or shielding. |
| Thermal Shutdown | +170°C junction with +25°C hysteresis - ensures robust overtemperature protection in sealed enclosures like head units and ECUs. |
Pinout & Package
V-DFN3020-13/SWP (Type A1) package with wettable flanks - enables automated optical inspection (AOI) of solder joints and improves thermal performance on PCBs with 2oz copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Accepts 3.8–32V supply; requires local 10µF ceramic bypass capacitor to suppress switching noise and stabilize input rail. |
| EN (Pin 2) | Enable Control | Digital input with 1.18V precision threshold; floating enables auto-start; supports programmable UVLO via resistor divider. |
| FB (Pin 3) | Output Voltage Sense | Connects to resistive divider; regulates output using internal 0.8V reference; tolerates ±1% FB voltage error over temp. |
| COMP (Pin 4) | Loop Compensation | Internal compensation enabled by grounding; external RC network optional for custom transient response tuning. |
| PG (Pin 5) | Power-Good Indicator | Open-drain output with 5MΩ internal pull-up; asserts low during soft-start, UVP, or OVP - used for system sequencing. |
| BST (Pin 6) | Bootstrap Supply | Connects 100nF capacitor to SW; powers high-side gate driver; critical for maintaining 74mΩ RDS(on) efficiency. |
| NC (Pin 7) | No Connect | Unbonded; may be left floating or tied to GND for mechanical stability - no electrical function. |
| GND (Pin 8) | Power Ground | Primary return path for high-current switching; must connect to thermal pad and minimize impedance to reduce noise coupling. |
| SW (Pin 9) | Switch Node | Drives external inductor; carries high di/dt; layout requires tight loop area with low-inductance GND connection to limit EMI. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation, HBM ±2kV / CDM ±1kV ESD, and IATF 16949 manufacturing - meets OEM Tier-1 requirements. |
| Ringing-free gate driver | Eliminates need for external gate resistors or snubbers while preserving fast edge rates - reduces BOM count and layout sensitivity. |
| Frequency Spread Spectrum (FSS) | ±6% jitter spreads energy across ~27kHz bandwidth - lowers peak conducted/radiated emissions by up to 10dB per CISPR 25 testing. |
| Low-IQ PFM mode | 22µA typical shutdown current and 22µA no-load operating current - enables >1-year battery standby in always-on automotive modules. |
| Integrated protection suite | Includes cycle-by-cycle OCP (5A peak), output UVP, thermal shutdown (+170°C), and input UVLO - eliminates need for discrete supervisors. |
Applications
| Automotive Infotainment | Instrument Cluster Power |
|---|---|
Use Scenario: Powering display backlight drivers and audio DSPs in head units under wide-input 12V battery conditions. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with PG signaling for safe boot sequencing and brown-out detection. Use Value: Delivers stable 3.5A output during cold-crank (4.5V VIN) and load-dump (32V VIN) events while meeting CISPR 25 Class 5 EMI limits. |
Use Scenario: Supplying microcontroller, TFT LCD, and CAN transceiver in digital dashboards requiring high reliability. IC Role / Device Role / Timing Role: Main DC-DC converter with LDO mode support for seamless transition during input voltage sags. Use Value: Maintains regulated output down to 3.8V input and provides precise 0.8V reference for <±1% output accuracy across temperature. |
| ADAS Camera Modules | Body Control Module (BCM) |
Use Scenario: Generating clean 1.8V/3.3V rails for image sensors and ISP processors in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: High-efficiency buck converter with ultra-low ripple and fast load transient response (<100µs settling). Use Value: Achieves >85% efficiency at 50mA light load (PFM) and <1% output deviation during 2.5A→3.5A load steps - prevents image artifacts. |
Use Scenario: Powering door lock actuators, LED lighting drivers, and LIN transceivers in centralized body electronics nodes. IC Role / Device Role / Timing Role: Robust primary regulator with thermal shutdown and cycle-by-cycle current limiting for intermittent high-current loads. Use Value: Withstands 150°C junction temperature and delivers 3.5A peak for motor actuation pulses without derating or external heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4433-AEC1 | 4.5V–36V input, 3.5A, 2.2MHz switching, no integrated FSS or ringing suppression | Higher frequency enables smaller inductors but increases EMI filtering complexity in automotive cabins | Prefer when board space is constrained and EMI filtering can be added externally |
| TPS543B20QRTERQ1 | 4.5V–18V input, 3A, PMBus interface, external compensation, higher IQ (45µA) | Supports digital configuration and telemetry but lacks wettable flanks and AEC-Q100 Grade 1 extended temp range | Choose when system-level monitoring and dynamic voltage scaling are required |
Compared with MPQ4433-AEC1 and TPS543B20QRTERQ1, the AP63356QZV-7 uniquely combines AEC-Q100 Grade 1 operation, integrated EMI mitigation (ringing-free drive + FSS), wettable-flank packaging, and 22µA quiescent current - making it optimal for cost-sensitive, space-constrained, and EMI-critical automotive power rails where external components must be minimized.
Availability
AP63356QZV-7 is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, and ADAS camera modules requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.
Supply support for AP63356QZV-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 AP63356Q/AP63357Q series belongs to Diodes' automotive-grade power conversion portfolio, designed specifically to meet stringent CISPR 25 EMI, AEC-Q100, and IATF 16949 requirements for next-generation vehicle electronics.
FAQ
What is the difference between AP63356QZV-7 and AP63357QZV-7?
The AP63356QZV-7 operates exclusively in forced PWM mode across all load conditions, ensuring constant switching frequency and predictable EMI behavior. In contrast, the AP63357QZV-7 enters Pulse Frequency Modulation (PFM) mode at light loads (<700mA), reducing quiescent current to 22µA and improving light-load efficiency to 86% at 5mA - ideal for always-on automotive modules.
Does AP63356QZV-7 require external compensation components?
No. AP63356QZV-7 includes an integrated loop compensation network; connecting COMP to GND enables default stable operation with standard 6.8µH inductors and 22µF output capacitors. External RC compensation is optional only for custom transient response tuning in demanding applications like ADAS camera power rails.
How does the proprietary gate driver reduce EMI without sacrificing efficiency?
The gate driver uses multi-level slew-rate control to dampen high-frequency ringing at the SW node while preserving fast turn-on/turn-off transitions. This avoids energy loss from excessive gate resistance or snubber networks, maintaining >90% efficiency at 2A while lowering peak radiated emissions by 8–10dB per CISPR 25 measurements.
Can AP63356QZV-7 support output voltages below 0.8V?
No. The internal reference is fixed at 0.800V ±1%, and the FB pin is designed for resistive divider feedback only. Output voltages lower than 0.8V cannot be regulated - the minimum configurable output is 0.8V (e.g., 0.8V direct, or 3.3V using 157kΩ/30kΩ divider). For sub-0.8V rails, a different converter with adjustable reference is required.
AP63356QZV-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 13-PowerVFDFN
- 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):
- 31V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 450kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- V-DFN3020-13 (Type A)
AP63356QZV-7 FAQ
1.How can I place an order for AP63356QZV-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP63356QZV-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 AP63356QZV-7 reliable?
The price and inventory of AP63356QZV-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP63356QZV-7 is usually 5 days.
3.What payment methods are accepted for AP63356QZV-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP63356QZV-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP63356QZV-7?
AP63356QZV-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP63356QZV-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 AP63356QZV-7?
For technical support, including AP63356QZV-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP63356QZV-7 requirements.
6.How does Aetrix verify that AP63356QZV-7 is sourced from the original manufacturer or authorized distributors?
All AP63356QZV-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 AP63356QZV-7 meets industry standards.
7.What is the process for return or replacement of AP63356QZV-7?
All AP63356QZV-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP63356QZV-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 AP63356QZV-7 part is unused and in its original packaging.
Return procedure for AP63356QZV-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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