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Diodes Incorporated AP63356DV-7
- Part No.:
- AP63356DV-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 13-PowerVFDFN
- Datasheet:
-
AP63356DV-7.pdf
- Description:
- IC REG BUCK ADJ 3.5A 13DFN
- Quantity:
- Payment:
- Shipping:
Inventory:12,418
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Product details
Overview
AP63356DV-7 from Diodes Incorporated is a 3.5A synchronous buck DC-DC converter with 3.8V–32V input range, integrated 74mΩ high-side and 40mΩ low-side MOSFETs, 450kHz fixed-frequency operation, and proprietary EMI-reduction gate driver. It delivers regulated 5V/3.3V output for FPGA, DSP, and point-of-load applications in flat-panel TVs and network systems.
For engineers reviewing the AP63356DV-7 datasheet, AP63356DV-7 pinout, AP63356DV-7 application, or AP63356DV-7 equivalent, this device supports PWM-only operation, features 0.8V ±1% feedback reference, 22µA quiescent current (AP63357 variant), and V-DFN3020-13 package with validated thermal resistance of 25°C/W (θJA).
Technical Context
The AP63356DV-7 employs peak current mode control with internal slope compensation to prevent subharmonic oscillation at duty cycles >50%. Its 450kHz oscillator initiates each switching cycle, and the COMP node voltage regulates average inductor current via error amplifier comparison against a 0.8V reference.
EMI reduction is achieved through two independent mechanisms: a multi-level gate driver that eliminates SW node ringing without degrading edge rates, and Frequency Spread Spectrum (FSS) with ±6% switching frequency jitter to disperse radiated energy across a broader band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 32V DC - supports direct connection to 5V/12V/24V distributed bus rails without pre-regulation. |
| IOUT Max | 3.5A continuous - sufficient for powering mid-tier FPGAs, ASIC cores, or multiple SoC domains. |
| VFB Accuracy | 0.792V to 0.808V (±1%) - ensures tight output regulation across temperature and line/load variations. |
| fSW | 400–500kHz typical - enables compact magnetics (e.g., 6.8µH inductor) while avoiding AM radio band interference. |
| IQ (PFM) | 22µA typical - minimizes standby power loss in always-on consumer electronics like smart displays. |
| RDS(ON) HS/LD | 74mΩ / 40mΩ - reduces conduction loss and thermal stress at full load, enabling 86% efficiency at 5mA light load. |
| Thermal Shutdown | 170°C with 25°C hysteresis - provides robust overtemperature protection during sustained overload or poor PCB heatsinking. |
Pinout & Package
V-DFN3020-13 (Type A) package: 3mm × 2mm, 0.5mm pitch, exposed thermal pad, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Power Input | Primary supply rail (3.8–32V); requires local 10µF ceramic bypass capacitor to GND for noise suppression. |
| EN (2) | Enable Control | Digital enable with 1.18V precision threshold; floating or tied to VIN enables automatic startup; supports UVLO programming. |
| FB (3) | Feedback Sense | Connects to resistor divider (e.g., 157kΩ/30kΩ) to set output voltage; 0.8V reference enables 3.3V/5V/12V configurations. |
| COMP (4) | Loop Compensation | Internal compensation enabled by grounding; external RC network allows custom loop response tuning for dynamic load stability. |
| PG (5) | Power-Good Indicator | Open-drain output with 5MΩ internal pull-up; asserts low during soft-start, UVP, or output fault conditions. |
| BST (6) | Bootstrap Supply | Drives high-side MOSFET gate; requires 100nF ceramic capacitor between BST and SW for charge pump operation. |
| NC (7) | No Connect | Unbonded pin; may be left floating or tied to GND/VIN without functional impact. |
| GND (8) | Power Ground | Main return path for input/output currents; must connect directly to thermal pad for optimal θJC = 5°C/W performance. |
| SW (9) | Switching Node | High dv/dt node connecting to inductor; layout critical for EMI; requires short, low-inductance trace to LC filter. |
Key Features
| Feature | Design Value |
|---|---|
| PWM-only operation (AP63356) | Eliminates PFM-induced output voltage ripple and audible noise in sensitive audio/video systems. |
| Proprietary gate driver | Suppresses SW node ringing without slowing rise/fall times - preserves efficiency while meeting CISPR-32 Class B EMI limits. |
| Frequency Spread Spectrum (FSS) | ±6% jitter spreads conducted/radiated emissions across ~27kHz bandwidth, reducing peak spectral amplitude by up to 10dB. |
| Integrated protection suite | Includes cycle-by-cycle OCP, output UVP, thermal shutdown, and UVLO with programmable hysteresis for system-level reliability. |
| Low-dropout (LDO) mode | Maintains regulation down to VIN – VOUT < 1V, supporting high-duty-cycle operation in 5V-out-from-5.5V-in scenarios. |
Applications
| Flat Panel TV Power Rails | FPGA Core Voltage Supply |
|---|---|
|
Use Scenario: Providing stable 1.2V/1.8V core and 3.3V I/O rails for LCD controller and timing processor in 4K UHD TVs. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 3.5A continuous current with fast transient response to video frame buffer bursts. Use Value: Integrated MOSFETs and internal compensation reduce BOM count by 4 components vs. controller+external FET solution; FSS ensures compliance with FCC Part 15B. |
Use Scenario: Generating 1.0V core voltage for Xilinx Artix-7 or Intel Cyclone V FPGA under dynamic logic switching loads. IC Role / Device Role / Timing Role: Point-of-load regulator with 4ms soft-start and PG signal for safe FPGA configuration sequencing. Use Value: 0.8V ±1% reference and 22µA IQ enable precise voltage margining and ultra-low standby power in battery-backed systems. |
| Network Router PoL Conversion | Smart Home Appliance MCU Supply |
|
Use Scenario: Converting 12V backplane voltage to 5V/3.3V for Ethernet PHYs, switch fabric, and management microcontrollers. IC Role / Device Role / Timing Role: High-efficiency buck converter operating across wide input range (12V ±10%) with EMI-hardened switching node. Use Value: V-DFN3020-13 package enables dense 2-layer PCB layout; thermal resistance (θJA = 25°C/W) sustains full load at +85°C ambient. |
Use Scenario: Powering ARM Cortex-M7 MCU, Wi-Fi module, and sensor hub in connected washing machines or refrigerators. IC Role / Device Role / Timing Role: Always-on power supply with low IQ and robust UVLO hysteresis to tolerate brownout events on unregulated AC-DC outputs. Use Value: Precision EN threshold (1.18V) allows clean power sequencing with external RC delay; LDO mode maintains regulation during input dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 2A max output, 36V max VIN, no FSS, higher IQ (120µA), SOIC-8 package | Lacks EMI reduction features; unsuitable for Class B radiated emission-critical designs | Select only if cost sensitivity outweighs EMI compliance requirements and load current ≤2A |
| TPS54332DR | 3A max output, 28V max VIN, external MOSFETs required, no integrated FSS or ringing suppression | Requires 6 external components vs. AP63356's 4; higher layout complexity and thermal footprint | Prefer when adjustable frequency (100kHz–2.5MHz) or external FET selection is mandatory |
Compared with MP2451DT-LF-Z and TPS54332DR, AP63356DV-7 delivers higher current density in a smaller footprint, integrates EMI-mitigating features not found in alternatives, and achieves superior light-load efficiency-making it optimal for space-constrained, noise-sensitive consumer and industrial PoL applications.
Availability
AP63356DV-7 is available at Aetrix Electronics and suitable for flat-panel TV power rails, FPGA core supplies, and network router point-of-load conversion requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for AP63356DV-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 for power management, signal integrity, and connectivity applications.
The AP63356/AP63357 series belongs to Diodes' high-efficiency DC-DC converter product line, designed specifically for EMI-sensitive consumer, industrial, and networking equipment requiring compact, low-noise, and highly integrated buck regulation.
FAQ
What is the difference between AP63356DV-7 and AP63357DV-7?
AP63356DV-7 operates exclusively in PWM mode across all load conditions, ensuring constant switching frequency and minimal output voltage ripple. AP63357DV-7 switches to PFM mode at light loads (<50mA), reducing quiescent current to 22µA but introducing variable frequency and potential audible noise. Both share identical pinout, package, and EMI-reduction features.
Can AP63356DV-7 be used with an output voltage lower than 0.8V?
No. The internal reference is fixed at 0.8V ±1%, and the FB pin senses the scaled output voltage. Output voltages below 0.8V cannot be regulated because the feedback loop lacks headroom to drive the COMP node sufficiently low to reduce duty cycle further. Minimum supported VOUT is 0.8V.
How is the Power-Good (PG) signal asserted and what load does it drive?
PG is an open-drain output with a 5MΩ internal pull-up to VIN. It pulls low when output voltage deviates beyond ±7.5% of target (e.g., <4.65V or >5.35V for 5V output), during soft-start, or under UVP/thermal fault. It can sink ≥1mA and is typically used to enable downstream regulators or assert system reset signals.
What thermal design considerations apply to the V-DFN3020-13 package?
The exposed thermal pad must be soldered to a minimum 40mm² copper pour with ≥4 thermal vias (0.3mm diameter) to inner ground planes. With this layout, θJA is 25°C/W. Without thermal vias, θJA degrades to ~60°C/W, limiting continuous output current to ~2.2A at +85°C ambient per derating curves in DS41949 Rev. 3-2.
AP63356DV-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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- V-DFN3020-13 (Type A)
AP63356DV-7 FAQ
1.How can I place an order for AP63356DV-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP63356DV-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 AP63356DV-7 reliable?
The price and inventory of AP63356DV-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP63356DV-7 is usually 5 days.
3.What payment methods are accepted for AP63356DV-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP63356DV-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP63356DV-7?
AP63356DV-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP63356DV-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 AP63356DV-7?
For technical support, including AP63356DV-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP63356DV-7 requirements.
6.How does Aetrix verify that AP63356DV-7 is sourced from the original manufacturer or authorized distributors?
All AP63356DV-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 AP63356DV-7 meets industry standards.
7.What is the process for return or replacement of AP63356DV-7?
All AP63356DV-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP63356DV-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 AP63356DV-7 part is unused and in its original packaging.
Return procedure for AP63356DV-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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