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Diodes Incorporated AP62300WU-7
- Part No.:
- AP62300WU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP62300WU-7.pdf
- Description:
- IC REG BUCK ADJ 3A TSOT26
- Quantity:
- Payment:
- Shipping:
Inventory:19,491
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Product details
Overview
AP62300WU-7 from Diodes Incorporated is a 3A synchronous buck DC-DC converter with 4.2V–18V input range, integrated 75mΩ high-side and 45mΩ low-side MOSFETs, 750kHz switching frequency, 0.8V ±1% feedback reference, and 155μA quiescent current in PFM mode-designed for EMI-sensitive 5V/12V point-of-load regulation in flat-panel TVs and home audio systems.
For engineers reviewing the AP62300WU-7 datasheet, AP62300WU-7 pinout, AP62300WU-7 application, or AP62300WU-7 equivalent, key selection criteria include its COT control architecture for fast transient response, proprietary gate driver for ringing-free SW node, thermal shutdown at +160°C, and TSOT26 package compatibility with space-constrained consumer power rails.
Technical Context
The AP62300WU-7 employs Constant On-Time (COT) control with input-voltage–compensated on-time calculation (tON = VOUT/(VIN × fSW)), enabling pseudo-fixed-frequency operation across 4.2V–18V input while maintaining <90ns minimum on-time and 220ns minimum off-time for stable light-load regulation.
Its proprietary multi-level gate driver suppresses switching-node ringing without degrading rise/fall slew rates, directly reducing high-frequency radiated EMI; combined with valley-current limiting (3.7A typ), UVLO (3.6V falling), and 2.5ms internal soft-start, it delivers robust startup and fault recovery in noisy consumer environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.2V to 18V DC - supports direct connection to 5V/12V distributed bus rails without pre-regulation. |
| IOUT Max | 3A continuous - sufficient for FPGA core, DSP I/O, or ASIC auxiliary rail power delivery. |
| fSW | 750kHz typical at VIN=12V, VOUT=5V - enables compact 3.3μH inductor and low-profile output capacitors. |
| IQ (PFM) | 155μA typical - extends battery life in always-on standby circuits and low-power audio subsystems. |
| VFB Ref | 0.8V ±1% at +25°C - sets output voltage via external resistor divider; supports 0.8V–7V programmable VOUT. |
| RDS(ON) HS/LS | 75mΩ / 45mΩ - minimizes conduction loss at full load, enabling >83% efficiency at 5mA light load. |
| Thermal Shutdown | +160°C with +20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
AP62300WU-7 is packaged in TSOT26 (Standard), a 6-pin, 1.6mm × 2.9mm, 0.95mm height surface-mount package with exposed thermal pad for enhanced power dissipation (θJA = 70°C/W on 2-layer FR-4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Supplies IC bias and high/low-side MOSFETs; requires ≥10μF ceramic bypass to GND near pin. |
| SW | Switching Node | Connects to inductor input; carries high di/dt; layout critical for EMI and efficiency. |
| GND | Power Ground | Primary return path for VIN, SW, BST, EN, FB; must tie to thermal pad and minimize impedance. |
| BST | Bootstrap Supply | Drives high-side MOSFET gate; requires ≥100nF capacitor from BST to SW for reliable turn-on. |
| EN | Enable Control | Digital input with 1.2V threshold; floating enables auto-start; 1.5μA shutdown current when pulled low. |
| FB | Feedback Sense | Monitors resistive divider output; regulates VOUT to 0.8V reference; high-impedance input (5.5μA sink). |
Key Features
| Feature | Design Value |
|---|---|
| COT Control Architecture | Delivers <10μs load transient response and eliminates loop compensation components for simplified design. |
| Ringing-Free Gate Driver | Suppresses SW node oscillation without slowing edge rates, reducing radiated EMI by >6dB in 30–1000MHz band. |
| Integrated Power MOSFETs | 75mΩ HS + 45mΩ LS reduce BOM count and PCB area vs. controller + discrete FET solutions. |
| Light-Load PFM Mode | Maintains >83% efficiency at 5mA output, critical for always-on audio amplifiers and TV standby supplies. |
| Comprehensive Protection | Includes cycle-by-cycle valley current limit, output undervoltage lockout, thermal shutdown, and UVLO. |
Applications
| Flat-Panel TV Power Rails | FPGA Core Voltage Supply |
|---|---|
|
Use Scenario: Regulating 5V/3.3V rails for TCON, backlight drivers, and HDMI interface ICs in 4K UHD TVs. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering stable, low-noise DC power with fast dynamic response to burst video loads. Use Value: COT control and EMI-optimized SW node meet CISPR-32 Class B radiated emissions limits without added ferrites or shielding. |
Use Scenario: Providing tightly regulated 1.2V core voltage to Xilinx Artix-7 or Intel Cyclone V FPGA during configuration and active logic operation. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter with 2.5ms soft-start to prevent inrush-induced rail collapse during FPGA power-up sequencing. Use Value: 0.8V ±1% VFB reference and valley-current limiting ensure ±2% output accuracy under 0–3A load steps and thermal drift. |
| Home Audio Amplifier Bias | Network Router PoL Conversion |
|
Use Scenario: Generating clean ±15V analog supply rails for Class AB/D audio amplifier stages in smart soundbars and AV receivers. IC Role / Device Role / Timing Role: Secondary buck stage feeding isolated DC/DC or LDOs; operates in PFM for ultra-low standby IQ. Use Value: 155μA quiescent current enables <100mW total system standby power, meeting Energy Star Tier 2 requirements. |
Use Scenario: Converting 12V mid-rail to 3.3V/1.8V for Ethernet PHYs, Wi-Fi SoCs, and memory interfaces in enterprise-grade routers. IC Role / Device Role / Timing Role: High-density, thermally robust buck converter mounted adjacent to heat-generating SoCs on compact 4-layer PCBs. Use Value: TSOT26 package with exposed thermal pad sustains 3A continuous output at +85°C ambient without derating. |
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, no integrated BST cap requirement. | Lacks proprietary EMI suppression; higher RDS(ON) (110mΩ HS) reduces efficiency at 3A. | Prefer for wider VIN range where EMI is less critical and load current ≤2A. |
| TPS563201DDFR | 4.5V–17V input, 0.8V ref, 3A output, 500kHz fSW, requires external bootstrap diode. | Higher IQ (250μA) and no PFM mode; less suitable for ultra-low standby power designs. | Choose when TI ecosystem support or adjustable frequency is prioritized over EMI performance. |
Compared with MP2451DT-LF-Z and TPS563201DDFR, AP62300WU-7 uniquely combines 3A capability, 155μA PFM IQ, and EMI-optimized switching in a 6-pin TSOT26, making it optimal for space- and noise-constrained consumer power rails where light-load efficiency and radiated emissions compliance are mandatory.
Availability
AP62300WU-7 is available at Aetrix Electronics and suitable for flat-panel TV power rails, FPGA core voltage supply, and home audio amplifier bias requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP62300WU-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 devices, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q200 for industrial and automotive applications.
The AP62300 series belongs to Diodes' high-efficiency, EMI-optimized DC-DC converter product line, designed specifically for consumer electronics power management where small size, low standby power, and regulatory emissions compliance are essential.
FAQ
What is the recommended input capacitor for AP62300WU-7?
A minimum 10μF X5R/X7R ceramic capacitor placed within 2mm of the VIN and GND pins is required to suppress high-frequency switching noise and stabilize the input rail. For improved ripple rejection and hold-up time, pair it with a 22μF bulk capacitor; total effective capacitance should exceed 33μF with ESR <10mΩ.
Can AP62300WU-7 operate with an output voltage below 0.8V?
No. The internal reference voltage is fixed at 0.8V ±1%, and the feedback network must be configured to scale the output so that the FB pin sees exactly 0.8V at regulation. Output voltages below 0.8V cannot be achieved without external circuitry, as the error amplifier lacks offset adjustment or programmable reference capability.
How does the EN pin function during power sequencing?
The EN pin has a 1.2V rising threshold and 1.1V falling threshold, with an internal 1.5μA pull-up current. When left floating, it enables automatically after VIN reaches UVLO release; adding a capacitor from EN to GND delays startup by controlling RC time constant, enabling controlled power-rail sequencing without external controllers.
Is AP62300WU-7 qualified for automotive applications?
AP62300WU-7 is not AEC-Q100 qualified. It is specified for industrial and consumer temperature ranges (–40°C to +85°C ambient), with junction temperature rated to +125°C. For automotive use, Diodes offers the AP62300T variant-contact Diodes or Aetrix for PPAP-capable, IATF 16949–certified versions with AEC-Q200 stress testing.
AP62300WU-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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-26
AP62300WU-7 FAQ
1.How can I place an order for AP62300WU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP62300WU-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 AP62300WU-7 reliable?
The price and inventory of AP62300WU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP62300WU-7 is usually 5 days.
3.What payment methods are accepted for AP62300WU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP62300WU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP62300WU-7?
AP62300WU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP62300WU-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 AP62300WU-7?
For technical support, including AP62300WU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP62300WU-7 requirements.
6.How does Aetrix verify that AP62300WU-7 is sourced from the original manufacturer or authorized distributors?
All AP62300WU-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 AP62300WU-7 meets industry standards.
7.What is the process for return or replacement of AP62300WU-7?
All AP62300WU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP62300WU-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 AP62300WU-7 part is unused and in its original packaging.
Return procedure for AP62300WU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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