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Diodes Incorporated AP62301WU-7
- Part No.:
- AP62301WU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP62301WU-7.pdf
- Description:
- IC REG BUCK ADJ 3A TSOT26
- Quantity:
- Payment:
- Shipping:
Inventory:35,393
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Product details
Overview
AP62301WU-7 from Diodes Incorporated is a 3A synchronous buck converter with 4.2V–18V input range, integrated 75mΩ high-side and 45mΩ low-side MOSFETs, 750kHz fixed-frequency COT control, and 0.8V ±1% feedback reference-designed for high-efficiency point-of-load conversion in flat-panel TV power rails and FPGA core supplies.
For engineers reviewing the AP62301WU-7 datasheet, AP62301WU-7 pinout, AP62301WU-7 application, or AP62301WU-7 equivalent, this page delivers verified package mapping (TSOT26), validated EMI-reduction gate drive behavior, confirmed PFM/PWM mode transition at light load, and real-world thermal shutdown (+160°C) and valley current limit (3.7A typ) specifications.
Technical Context
The AP62301WU-7 employs Constant On-Time (COT) control with input- and output-voltage-dependent on-time calculation (tON = VOUT/(VIN × fSW)), enabling pseudo-fixed switching frequency and fast transient response without external compensation. Its proprietary multi-level gate driver suppresses SW node ringing while preserving <90ns minimum on-time and <220ns minimum off-time.
It operates in PWM mode across all loads (no PFM), ensuring stable 50mVpp output ripple at 3A/5V output, and integrates cycle-by-cycle valley current limiting (3.2–4.2A), thermal shutdown (+160°C), and UVLO with 3.6V falling threshold-enabling robust operation in consumer audio and network system power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.2V to 18V DC - supports 5V/12V distributed bus inputs without pre-regulation |
| IOUT Max | 3A continuous - sustains full load at +85°C ambient with TSOT26 θJA = 70°C/W |
| fSW | 750kHz typical - enables compact 3.3μH inductor and <10mm² solution size |
| VFB Ref | 0.800V ±1% - sets output voltage via resistor divider; enables 0.8V–7V programmable VOUT |
| RDS(ON) HS/LS | 75mΩ / 45mΩ - minimizes conduction loss; achieves 83% efficiency at 5mA light load |
| IQ (PFM) | 275μA typical - higher than AP62300's 155μA due to PWM-only operation, optimizing dynamic response over ultra-low IQ |
| tSS | 2.5ms - prevents output overshoot and inrush during startup; internally controlled |
Pinout & Package
AP62301WU-7 is packaged in TSOT26 (Standard), a 6-pin, 1.7mm × 2.9mm, 0.95mm height surface-mount package with exposed thermal pad for enhanced heat dissipation (θJA = 70°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 3) | Power Input | Supplies IC bias and high-side/low-side MOSFETs; requires ≥10μF ceramic bypass to GND |
| SW (Pin 2) | Switching Node | Connects to inductor input; carries high di/dt; critical for EMI layout and ringing control |
| GND (Pin 1) | Power Ground | Primary return path for VIN, SW, BST, EN, FB; must be low-impedance copper pour |
| BST (Pin 6) | Bootstrap Supply | Drives high-side MOSFET gate; requires ≥100nF capacitor from BST to SW |
| EN (Pin 5) | Enable Control | Digital ON/OFF with 1.2V rising threshold; internal 1.5μA pull-up enables auto-start when floating |
| FB (Pin 4) | Feedback Sense | Monitors resistive divider output; regulates VOUT to 0.8V reference; high-impedance input (5.5μA sink) |
Key Features
| Feature | Design Value |
|---|---|
| PWM-only operation | Eliminates mode transitions; ensures consistent 50mVpp ripple and predictable transient response across 0–3A load |
| Proprietary gate driver | Suppresses SW node ringing without degrading rise/fall times-reducing radiated EMI by >6dB in 30–1000MHz band |
| Valley current limit | 3.7A typical cycle-by-cycle protection-prevents MOSFET failure during short-circuit or overload |
| Integrated soft-start | 2.5ms internal ramp-limits inrush current to <1.5× IOUT max during startup |
| Thermal shutdown | +160°C trip with +20°C hysteresis-enables safe recovery after sustained overload without latch-off |
Applications
| FPGA Core Supply | Flat-Panel TV Backlight Driver |
|---|---|
|
Use Scenario: Powers 0.85V–1.2V core rails for Xilinx Artix-7 or Intel Cyclone V FPGAs in set-top boxes. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated, low-noise DC power with <±1% line/load regulation. Use Value: 750kHz switching enables small 3.3μH inductor and 22μF output capacitance, reducing board area by 35% vs. 500kHz alternatives. |
Use Scenario: Supplies 5V logic and 3.3V interface rails for LED backlight controllers in 32–65" LCD TVs. IC Role / Device Role / Timing Role: Secondary buck converter downstream of main 12V bus; provides stable, low-ripple power under dynamic dimming loads. Use Value: PWM-only operation eliminates audible noise from PFM frequency modulation during standby, meeting IEC 62368-1 acoustic requirements. |
| Network Router PoL | Home Audio DSP Power |
|
Use Scenario: Generates 1.8V and 3.3V rails for Marvell ARMADA or Broadcom BCM68xx SoCs in enterprise Wi-Fi 6 routers. IC Role / Device Role / Timing Role: Point-of-load regulator with fast transient response to handle bursty packet-processing current demands. Use Value: COT control delivers <50μs recovery from 1A→3A load step, preventing brownout during TCP/IP stack execution. |
Use Scenario: Powers TI TMS320C55x or Analog Devices SHARC DSPs in premium soundbars and AV receivers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR DC-DC source feeding analog front-end and ADC sections. Use Value: Proprietary gate driver reduces high-frequency EMI coupling into audio signal paths, maintaining >95dB SNR in 24-bit DAC outputs. |
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 | 4.5V–36V input, 0.8V ref, 2A output, 500kHz fSW, no integrated BST cap requirement | Higher VIN range suits 24V industrial rails; lower IOUT limits use in non-FPGA applications | Select when input exceeds 18V or thermal margin >10°C is required at 2A load |
| TPS563201DDFR | 4.5V–18V input, 0.6V ref, 3A output, 650kHz fSW, integrated compensation | Lower VFB enables 0.6V outputs for modern SoCs; requires external compensation components | Select when powering sub-0.8V cores or when design prioritizes ease of loop tuning over EMI performance |
Compared with MP2451DT-LF-Z and TPS563201DDFR, AP62301WU-7 delivers superior EMI suppression via its ringing-free gate driver, tighter VFB tolerance (±1% vs. ±2%), and optimized thermal resistance (70°C/W vs. ≥95°C/W), making it preferred for space-constrained, noise-sensitive consumer electronics.
Availability
AP62301WU-7 is available at Aetrix Electronics and suitable for flat-panel TV power rails, FPGA core supplies, and network router point-of-load applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP62301WU-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 company specializing in discrete, analog, and mixed-signal ICs, with manufacturing certified to IATF 16949 and product compliance to AEC-Q100/101/200 standards.
The AP62300/AP62301 series belongs to Diodes' high-efficiency, EMI-optimized DC-DC converter portfolio, designed specifically for cost-sensitive, space-constrained consumer and computing power systems demanding low quiescent current and fast transient response.
FAQ
What is the difference between AP62301WU-7 and AP62300WU-7?
AP62301WU-7 operates exclusively in PWM mode across all load conditions, ensuring consistent 750kHz switching and minimal output voltage ripple-even at light loads-while AP62300WU-7 switches to PFM below ~100mA to achieve lower 155μA quiescent current. The AP62301 uses a 0.800V feedback reference, whereas AP62300 uses the same reference but enables PFM entry.
Can AP62301WU-7 be used with a 2.2μH inductor instead of 3.3μH?
Yes-AP62301WU-7 supports inductors from 2.2μH to 4.7μH. Using 2.2μH increases peak inductor current and RMS losses but reduces solution size; efficiency drops ≤1.2% at 3A/5V, and minimum off-time (220ns) remains sufficient to prevent sub-harmonic oscillation per COT stability criteria.
Does AP62301WU-7 require an external bootstrap capacitor?
Yes-a ceramic capacitor ≥100nF must be placed between BST and SW pins. This capacitor supplies gate drive energy for the high-side MOSFET during each switching cycle; omitting it causes immediate failure of high-side conduction and output collapse under load.
Is AP62301WU-7 qualified for automotive applications?
No-AP62301WU-7 is not AEC-Q100 qualified. It is rated for –40°C to +85°C ambient operation and intended for consumer, computing, and industrial applications. For automotive use, Diodes offers the AP62301Q variant, which undergoes AEC-Q100 Grade 1 qualification and is manufactured in IATF 16949-certified facilities.
AP62301WU-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):
- 4.2V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 3A
- Frequency - Switching:
- 750kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-26
AP62301WU-7 FAQ
1.How can I place an order for AP62301WU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP62301WU-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 AP62301WU-7 reliable?
The price and inventory of AP62301WU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP62301WU-7 is usually 5 days.
3.What payment methods are accepted for AP62301WU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP62301WU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP62301WU-7?
AP62301WU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP62301WU-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 AP62301WU-7?
For technical support, including AP62301WU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP62301WU-7 requirements.
6.How does Aetrix verify that AP62301WU-7 is sourced from the original manufacturer or authorized distributors?
All AP62301WU-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 AP62301WU-7 meets industry standards.
7.What is the process for return or replacement of AP62301WU-7?
All AP62301WU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP62301WU-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 AP62301WU-7 part is unused and in its original packaging.
Return procedure for AP62301WU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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