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Diodes Incorporated AP63201WU-7
- Part No.:
- AP63201WU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP63201WU-7.pdf
- Description:
- IC REG BUCK ADJ 2A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:18,110
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Product details
Overview
AP63201WU-7 from Diodes Incorporated is a 3.8V–32V input, 2A synchronous buck DC/DC converter in TSOT26 package, featuring 500kHz fixed-frequency PWM operation, 0.8V ±1% reference voltage, 22µA quiescent current, and integrated 125mΩ/68mΩ MOSFETs - deployed in FPGA/DSP power supplies and industrial 24V bus converters.
For engineers reviewing the AP63201WU-7 datasheet, AP63201WU-7 pinout, AP63201WU-7 application, or AP63201WU-7 equivalent, key selection criteria include EMI-reduction features (FSS ±6%, ringing-free gate drive), precision enable threshold (1.18V), thermal shutdown (+160°C), and compatibility with low-ESR ceramic output capacitors in space-constrained designs.
Technical Context
This device implements peak current mode control with internal slope compensation to prevent subharmonic oscillation at >50% duty cycle. Its fixed 500kHz switching frequency enables predictable EMI filtering and stable loop response across 3.8V–32V input range.
The proprietary multi-level gate driver suppresses SW node ringing without degrading rise/fall times, while Frequency Spread Spectrum (±6% jitter) spreads conducted/radiated noise over a wider band - both critical for CISPR 32 Class B compliance in consumer audio and set-top box applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 32V DC - supports direct connection to 12V/24V industrial buses and automotive battery rails with transient tolerance up to +40V/400ms. |
| Output Current | 2A continuous - sustains full load at 85°C ambient with standard FR-4 PCB layout (θJA = 89°C/W). |
| Feedback Voltage | 0.800V ±1% - enables precise output regulation down to 0.8V using external resistor divider; accuracy maintained over -40°C to +85°C. |
| Quiescent Current | 22µA typical - ensures <100µW no-load power loss, critical for always-on IoT sensor nodes and standby power domains. |
| Switching Frequency | 500kHz fixed - balances inductor size (e.g., 2.2µH) and efficiency; avoids AM radio band and simplifies EMI filter design. |
| EMI Reduction | FSS ±6% + ringing-free SW node - reduces peak radiated emissions by >10dB compared to non-FSS buck converters in same layout. |
| Protection Features | Cycle-by-cycle OCP (2.8A typ), thermal shutdown (+160°C), UVLO (3.5V rising), and hiccup-mode fault recovery - eliminates need for external supervision ICs. |
Pinout & Package
AP63201WU-7 is housed in a 6-pin, low-profile TSOT26 package (2.9mm × 1.6mm × 0.6mm), optimized for high-density PCB layouts and thermal performance on 2oz copper layers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback sensing input | Connects to resistive divider; regulates output by comparing divided VOUT to 0.8V internal reference - sets output voltage with ±1% accuracy. |
| 2 EN | Enable control input | Digital ON/OFF control with 1.18V precision threshold; internal 1.5µA pull-up enables auto-start when tied to VIN; supports UVLO programming via external divider. |
| 3 VIN | Main power input | Supplies IC bias and switching stage; requires ≥10µF ceramic bypass capacitor close to pin to suppress switching noise and stabilize input rail. |
| 4 GND | Power ground reference | Common return path for high-side/low-side MOSFETs and control circuitry; must be connected to solid ground plane for EMI and thermal performance. |
| 5 SW | Switching node output | Drives external inductor; carries high di/dt current - requires tight layout with minimal trace length and dedicated thermal pad under IC body. |
| 6 BST | Bootstrap supply for high-side gate | Connected via 100nF ceramic capacitor to SW; generates ~5V gate drive above SW to fully enhance integrated 125mΩ N-channel MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 125mΩ high-side + 68mΩ low-side MOSFETs - eliminates external switch selection, reduces BOM count, and guarantees matched timing and RDS(on) tracking. |
| EMI-Optimized Switching | FSS ±6% + proprietary gate driver - suppresses narrowband EMI peaks and eliminates SW node ringing without adding snubbers or degrading efficiency. |
| Precision Enable Threshold | 1.18V ±30mV rising edge - enables accurate input UVLO configuration and reliable sequencing with other rails using simple resistor dividers. |
| Robust Protection Suite | Cycle-by-cycle OCP, thermal shutdown (+160°C), and hiccup-mode recovery - prevents damage during sustained overload or poor heatsinking conditions. |
| Low-IQ Light-Load Operation | 22µA IQ (non-switching) - maintains ultra-low standby power in always-on systems without requiring external LDOs or power gating. |
Applications
| Flat Screen TV & Monitors | FPGA/DSP Core Supplies |
|---|---|
|
Use Scenario: Powering 1.2V/1.8V logic rails in display controller boards with strict EMI limits and limited board area. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering clean, regulated core voltage with fast transient response to dynamic load steps. Use Value: FSS and ringing-free SW node meet CISPR 32 Class B radiated emissions without added ferrite beads or shielding cans. |
Use Scenario: Generating configurable I/O or auxiliary voltages for Xilinx Artix-7 or Intel Cyclone V FPGA platforms. IC Role / Device Role / Timing Role: Adjustable-output buck converter (via FB divider) providing stable 1.2V–3.3V rails with soft-start to prevent inrush into large FPGA capacitance. Use Value: 4ms internal soft-start and 2A capability ensure safe power-up of FPGA banks without violating slew-rate or current-limit specs. |
| Network Systems | Consumer Audio Devices |
|
Use Scenario: Point-of-load conversion for 5V/3.3V rails in Ethernet switches and Wi-Fi access points operating from 12V or 24V backplanes. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC/DC stage powering PHY transceivers and packet processors with minimal thermal footprint. Use Value: 89°C/W θJA enables full 2A output at 70°C ambient on standard 4-layer PCB - eliminates need for heatsinks or forced air. |
Use Scenario: Powering DACs, op-amps, and digital audio processors in premium Bluetooth speakers and soundbars. IC Role / Device Role / Timing Role: Low-ripple, low-noise power source where switching artifacts could modulate analog signal paths or induce audible noise. Use Value: 22µA IQ and FSS reduce ground-borne noise coupling; 0.8V reference enables tight output tolerance (<±2%) across temperature. |
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 | 3.3V–36V input, 0.6A output, 2MHz switching, no FSS, higher IQ (350µA) | Limited to lower-current applications; lacks EMI reduction features needed for Class B compliance | Select only if output current ≤0.6A and EMI requirements are relaxed; not suitable for 2A FPGA or TV use cases. |
| TPS562201DDCR | 4.5V–17V input, 2A output, 580kHz, no FSS, 110µA IQ, requires external bootstrap diode | Narrower VIN range excludes 24V industrial use; higher IQ increases standby loss in battery-backed systems | Preferable only for cost-sensitive 12V-only designs where EMI is managed externally; adds BOM complexity vs. AP63201WU-7's integrated BST cap. |
Compared with MP2451DT-LF-Z and TPS562201DDCR, AP63201WU-7 delivers 2A output across 3.8V–32V with industry-leading EMI suppression (FSS + ringing-free SW) and lowest IQ (22µA), making it uniquely suited for compact, high-reliability 24V bus and consumer electronics power rails.
Availability
AP63201WU-7 is available at Aetrix Electronics and suitable for FPGA/DSP core supplies, flat-panel display power, and network system point-of-load conversion requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP63201WU-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-performance power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
AP63201WU-7 belongs to Diodes' AP63xxx family of EMI-optimized synchronous buck converters - designed specifically for space-constrained, noise-sensitive applications requiring robust operation across wide input ranges and extended temperature profiles.
FAQ
What is the minimum recommended input voltage for reliable startup?
The AP63201WU-7 has a guaranteed UVLO rising threshold of 3.30V and hysteresis of 440mV. Reliable startup occurs at VIN ≥ 3.5V under all conditions; operation below 3.3V disables the converter and places it in shutdown with 1µA ISHDN current.
Can AP63201WU-7 be used with a fixed 3.3V output without external resistors?
No - AP63201WU-7 is the adjustable version (0.8V reference); fixed 3.3V output is provided by AP63203WU-7. To set 3.3V with AP63201WU-7, use R1 = 30.9kΩ and R2 = 62kΩ per Figure 20, achieving ±1% output accuracy over temperature and line.
How does the proprietary gate driver reduce EMI without sacrificing efficiency?
The multi-level gate driver controls turn-on/turn-off slew rates dynamically to eliminate SW node ringing while maintaining fast edge transitions (typ. 80ns min on-time). This avoids energy loss in snubbers and preserves >92% peak efficiency at 12V→3.3V/2A, unlike passive damping methods.
Is thermal derating required for continuous 2A operation at 85°C ambient?
Yes - with θJA = 89°C/W and max TJ = +125°C, the maximum allowable power dissipation is 446mW. At 12V→3.3V/2A, PD ≈ 380mW (including conduction and switching losses), leaving 66mW margin. Derating begins above 75°C ambient per Figure 24.
AP63201WU-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):
- 1.2V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 2A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
AP63201WU-7 FAQ
1.How can I place an order for AP63201WU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP63201WU-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 AP63201WU-7 reliable?
The price and inventory of AP63201WU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP63201WU-7 is usually 5 days.
3.What payment methods are accepted for AP63201WU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP63201WU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP63201WU-7?
AP63201WU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP63201WU-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 AP63201WU-7?
For technical support, including AP63201WU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP63201WU-7 requirements.
6.How does Aetrix verify that AP63201WU-7 is sourced from the original manufacturer or authorized distributors?
All AP63201WU-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 AP63201WU-7 meets industry standards.
7.What is the process for return or replacement of AP63201WU-7?
All AP63201WU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP63201WU-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 AP63201WU-7 part is unused and in its original packaging.
Return procedure for AP63201WU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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