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Diodes Incorporated AP62300TWU-7
- Part No.:
- AP62300TWU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP62300TWU-7.pdf
- Description:
- IC REG BUCK ADJ 3A TSOT26
- Quantity:
- Payment:
- Shipping:
Inventory:97,017
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Product details
Overview
AP62300TWU-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, 0.763V ±1% reference voltage (25°C), 750kHz switching frequency at 12VIN/5VOUT, 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 AP62300TWU-7 datasheet, AP62300TWU-7 pinout, AP62300TWU-7 application, or AP62300TWU-7 equivalent, key selection criteria include its TSOT26 package footprint, COT control architecture for fast transient response, proprietary ringing-free gate driver for radiated EMI reduction, and precise 1.2V EN threshold enabling power-rail sequencing.
Technical Context
The AP62300TWU-7 implements Constant On-Time (COT) control with input-voltage–compensated on-time calculation (tON = VOUT/(VIN × fSW)), enabling pseudo-fixed-frequency operation across 4.2–18V input while maintaining <90ns minimum on-time and 220ns minimum off-time. Its multi-level gate driver suppresses SW node ringing without degrading rise/fall slew rates.
It operates in PFM mode under light load (≤5mA), achieving up to 83% efficiency, and transitions seamlessly to CCM above the calculated boundary current. Protection includes cycle-by-cycle valley current limit (3.2–4.2A), thermal shutdown at +160°C with +20°C hysteresis, UVLO (3.6V falling / 3.9–4.15V rising), and output undervoltage protection.
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 Continuous | 3A - delivers full rated current with thermal derating per θJA = 70°C/W in TSOT26 package. |
| VFB Reference | 0.763V ±1% at +25°C - sets output voltage via external resistor divider; enables 0.8–7V programmable VOUT. |
| fSW | 750kHz typical at 12VIN/5VOUT - balances EMI performance and inductor size; varies with load in PFM. |
| IQ (PFM) | 155μA typical - minimizes standby power loss in always-on consumer electronics subsystems. |
| RDS(ON) HS/LS | 75mΩ / 45mΩ - integrated MOSFETs reduce BOM count and conduction losses at 3A load. |
| EN Threshold | 1.20–1.25V logic high - allows precise UVLO programming and reliable rail sequencing with RC delay networks. |
Pinout & Package
AP62300TWU-7 is housed in a thermally enhanced TSOT26 (Standard) package (2.9mm × 1.6mm × 0.85mm), optimized for high-power density PCB layouts with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 3) | Power Input | Accepts 4.2–18V supply; requires local 10μF ceramic bypass capacitor to GND for noise suppression. |
| SW (Pin 2) | Switching Node | Connects to inductor input; carries high di/dt; must be routed with minimal loop area to reduce EMI. |
| GND (Pin 1) | Power Ground | Primary return path for high-current loops; tied directly to thermal pad for optimal heat dissipation. |
| BST (Pin 6) | Bootstrap Supply | Drives high-side MOSFET gate; requires ≥100nF capacitor between BST and SW for charge replenishment. |
| EN (Pin 5) | Enable Control | Digital input with 1.2V threshold; internal 1.5μA pull-up enables auto-start when floating; supports RC-delayed sequencing. |
| FB (Pin 4) | Feedback Sense | Monitors resistive divider output; regulates VOUT to 0.763V reference; high-impedance input minimizes divider current. |
Key Features
| Feature | Design Value |
|---|---|
| Ringing-free SW node | Proprietary multi-level gate driver eliminates high-frequency switching node oscillation without sacrificing efficiency or slew rate. |
| COT control architecture | Delivers <10μs load transient response and eliminates external compensation components for stable 5V/3.3V outputs. |
| EMI-optimized layout | Integrated MOSFETs, minimized SW loop area, and controlled edge rates meet CISPR-32 Class B radiated emission limits. |
| Light-load PFM mode | Reduces switching frequency below 5mA load, sustaining 83% efficiency and 155μA IQ for battery-backed or standby circuits. |
| Comprehensive protection | Includes valley current limiting, thermal shutdown (+160°C), UVLO hysteresis, and output undervoltage lockout. |
Applications
| Flat-Panel TV Power Rails | FPGA Core Supply |
|---|---|
|
Use Scenario: Regulating 5V/3.3V rails for display timing controllers and interface ICs in 4K UHD TVs. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering clean, low-noise power with fast transient response to dynamic pixel data loads. Use Value: Proprietary EMI suppression enables compliance with stringent CISPR-32 radiated emissions limits without added ferrite beads or shielding. |
Use Scenario: Providing tightly regulated 1.2V core voltage to Xilinx Artix-7 FPGA I/O banks during configuration and operation. IC Role / Device Role / Timing Role: Point-of-load converter with COT control ensuring sub-100mV output deviation during 2A load steps. Use Value: 0.763V reference tolerance and 2.5ms soft-start prevent FPGA configuration failure due to VCCINT overshoot or inrush. |
| Home Audio DSP Supply | Network Router PoL |
|
Use Scenario: Generating ultra-low-noise 3.3V supply for TI TMS320C55x DSP in premium soundbars and AV receivers. IC Role / Device Role / Timing Role: Low-IQ buck converter operating in PFM during idle periods to extend standby battery life. Use Value: 155μA quiescent current and 83% light-load efficiency minimize self-heating and acoustic noise in enclosed enclosures. |
Use Scenario: Stepping down 12V system rail to 5V for Ethernet PHYs and switch controllers in enterprise SOHO routers. IC Role / Device Role / Timing Role: High-reliability PoL regulator with thermal shutdown and cycle-by-cycle current limiting for unattended operation. Use Value: Integrated 75mΩ/45mΩ MOSFETs eliminate discrete FET selection risk and reduce board area by >30% vs. controller+MOSFET solutions. |
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 | Fixed 500kHz fSW, no PFM mode, higher IQ (260μA), 0.8V reference, SOT23-6 package. | Lacks light-load efficiency optimization; less suitable for always-on audio or IoT standby rails. | Choose when fixed-frequency EMI filtering is prioritized over light-load efficiency. |
| TPS563201DDFR | Adjustable soft-start, 0.8V reference, 1.2MHz fSW, 125μA IQ, 6-pin SOT23 package. | Higher switching frequency increases inductor cost; lower IQ but no proprietary EMI mitigation. | Prefer for space-constrained designs needing faster transient response, accepting higher radiated EMI risk. |
Compared with MP2451DT-LF-Z and TPS563201DDFR, AP62300TWU-7 uniquely combines PFM-enabled ultra-low IQ, integrated EMI suppression, and TSOT26 thermal performance-making it optimal for consumer electronics where standby power, radiated emissions, and board-area constraints co-dominate.
Availability
AP62300TWU-7 is available at Aetrix Electronics and suitable for flat-panel TV power rails, FPGA core supplies, and home audio DSP regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP62300TWU-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 design centers in Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.
The AP62300 series belongs to Diodes' high-efficiency DC-DC converter product line, engineered specifically for EMI-sensitive consumer and computing applications demanding low quiescent current, small footprint, and robust protection.
FAQ
What is the recommended input capacitor for AP62300TWU-7?
A 10μF X5R/X7R ceramic capacitor placed within 2mm of VIN and GND pins is required to suppress high-frequency switching noise. For systems with long input traces, add a bulk 47–100μF aluminum polymer capacitor upstream to handle low-frequency ripple and inrush current.
Can AP62300TWU-7 be used in automotive applications?
AP62300TWU-7 is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., AP62300Q) with PPAP documentation, extended temperature range (−40°C to +125°C), and IATF 16949 manufacturing-contact Diodes sales for qualified alternatives.
How does the EN pin enable power-rail sequencing?
Applying a rising voltage >1.2V to EN initiates 2.5ms soft-start. Leaving EN floating enables auto-start via internal 1.5μA pull-up. Adding an RC network (e.g., 100kΩ + 10nF) delays EN rise time by ~2.8ms, allowing staggered startup of multiple rails to limit inrush current.
What causes the difference in feedback reference voltage between AP62300T and AP62300?
AP62300T uses a trimmed 0.763V ±1% reference to improve accuracy at low output voltages (e.g., 1.2V or 1.8V), while AP62300/AP62301 use 0.8V ±1%. This enables tighter regulation tolerance for modern low-voltage digital ICs without requiring external compensation.
AP62300TWU-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):
- 0.763V
- 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
AP62300TWU-7 FAQ
1.How can I place an order for AP62300TWU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP62300TWU-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 AP62300TWU-7 reliable?
The price and inventory of AP62300TWU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP62300TWU-7 is usually 5 days.
3.What payment methods are accepted for AP62300TWU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP62300TWU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP62300TWU-7?
AP62300TWU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP62300TWU-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 AP62300TWU-7?
For technical support, including AP62300TWU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP62300TWU-7 requirements.
6.How does Aetrix verify that AP62300TWU-7 is sourced from the original manufacturer or authorized distributors?
All AP62300TWU-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 AP62300TWU-7 meets industry standards.
7.What is the process for return or replacement of AP62300TWU-7?
All AP62300TWU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP62300TWU-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 AP62300TWU-7 part is unused and in its original packaging.
Return procedure for AP62300TWU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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