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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Diodes Incorporated AP62250WU-7

Name: AP62250WU-7
Brand: Diodes Incorporated
SKU: AP62250WU-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP62250WU-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: SOT-23-6 Thin, TSOT-23-6

Datasheet:: AP62250WU-7.pdf

Description:: IC REG BUCK ADJ 2.5A TSOT26

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Inventory:172,720

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Product details

Overview

AP62250WU-7 from Diodes Incorporated is a 2.5A synchronous buck DC-DC converter with 4.2V–18V input range, integrated 75mΩ high-side and 45mΩ low-side MOSFETs, 1.3MHz switching frequency (at 12V_IN/5V_OUT), 0.8V ±1% reference voltage, and 155μA quiescent current in PFM mode-designed for EMI-sensitive point-of-load regulation in flat-panel displays and FPGA power supplies.

For engineers reviewing the AP62250WU-7 datasheet, AP62250WU-7 pinout, AP62250WU-7 application, or AP62250WU-7 equivalent, key selection criteria include its COT control architecture for fast transient response, proprietary gate driver for ringing-free SW node, valley-current OCP, thermal shutdown at +160°C, and dual SOT563/TSOT26 package options with validated thermal resistance (θ_JA = 110°C/W and 70°C/W).

Technical Context

The AP62250WU-7 implements Constant On-Time (COT) control to deliver pseudo-fixed-frequency operation across input voltage variations while maintaining fast load-step response and minimal output ripple. Its on-time is calculated as t_ON = V_OUT/(V_IN × f_SW), enabling stable loop behavior without external compensation.

It integrates protection features including cycle-by-cycle valley-current limiting (3.7A typ), undervoltage lockout (UVLO falling threshold 3.6V), and thermal shutdown (+160°C with +20°C hysteresis). The proprietary multi-level gate driver suppresses switching-node ringing without degrading rise/fall times-directly reducing high-frequency radiated EMI.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.2V to 18V DC - supports 5V/12V distributed bus inputs and automotive battery-supplied systems.
Output Current	2.5A continuous - sufficient for FPGA core rails and mid-power audio amplifiers.
Switching Frequency	1.3MHz typical (VIN=12V, VOUT=5V) - enables compact LC filter design with ≤2.2μH inductors.
Quiescent Current	155μA in PFM mode - extends battery life in always-on consumer electronics subsystems.
Reference Voltage	0.800V ±1% at +25°C - ensures tight output regulation accuracy for low-voltage logic rails (e.g., 1.2V, 1.8V).
High-Side R_DS(ON)	75mΩ - minimizes conduction loss at full load; combined with 45mΩ low-side MOSFET for high efficiency.
Thermal Shutdown	+160°C with +20°C hysteresis - provides robust overtemperature protection during sustained overload or poor PCB thermal layout.

Pinout & Package

AP62250WU-7 is available in TSOT26 (Standard) and SOT563 (Standard) packages-both 6-pin, lead-free, RoHS-compliant surface-mount packages with identical pin functions but reversed pin order. Thermal resistance θ_JA is 70°C/W (TSOT26) and 110°C/W (SOT563) on standard 2-layer FR-4 PCBs.

Pin/Terminal	Circuit Role	Design Meaning
VIN	Power Input	Supplies IC bias and high/low-side MOSFETs; requires ≥10μF ceramic bypass capacitor to GND for noise suppression.
SW	Switch Node	Connects to inductor; carries high di/dt switching current-critical for EMI layout and LC filter placement.
GND	Power Ground	Common return path for VIN, SW, BST, EN, and FB; must be low-impedance copper pour under IC.
BST	Bootstrap Supply	Drives high-side MOSFET gate via 100nF capacitor to SW; determines high-side drive strength and efficiency.
EN	Enable Control	Digital input with 1.2V logic-high threshold; internal 1.5μA pull-up enables auto-start if left floating.
FB	Feedback Sense	Monitors resistive divider output; sets V_OUT = 0.8V × (1 + R1/R2); sensitive to PCB trace noise.

Key Features

Feature	Design Value
Constant On-Time (COT) Control	Enables <100μs load transient recovery without external compensation components-ideal for dynamic FPGA/DSP loads.
Ringing-Free Gate Driver	Proprietary multi-level drive eliminates SW node oscillation >100MHz while preserving <10ns MOSFET turn-on/off times.
Valley Current Limit Protection	3.7A typical cycle-by-cycle limit sensed through low-side MOSFET-prevents inductor saturation and thermal runaway.
Programmable UVLO	External resistor divider on EN pin adjusts VIN enable/disable thresholds (e.g., 4.15V rising / 3.85V falling) for rail sequencing.
Soft-Start Time	2.5ms internal ramp prevents output overshoot and input inrush current during power-up.

Applications

Flat Panel Displays

FPGA Core Power

Use Scenario: Powering TCON (timing controller) and LED backlight drivers in 24–65″ LCD/LED TVs and monitors.

IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator delivering stable, low-noise supply with fast transient response to video frame rate changes.

Use Value: COT control maintains <±1% output regulation during 100mA–2.5A load steps caused by backlight dimming and panel refresh cycles.

Use Scenario: Generating configurable core voltage (e.g., 1.2V, 1.8V) for Xilinx Artix-7 or Intel Cyclone V FPGAs in industrial controllers.

IC Role / Device Role / Timing Role: Adjustable buck converter with precise 0.8V reference and valley-current OCP-ensuring safe startup and reliable operation under partial reconfiguration.

Use Value: 155μA quiescent current reduces standby power in always-on programmable logic modules without sacrificing dynamic performance.

Home Audio Systems

Network Infrastructure

Use Scenario: Supplying Class-D amplifier ICs and DSP processors in smart speakers and soundbars operating from 12V wall adapters.

IC Role / Device Role / Timing Role: High-efficiency 12V-to-5V/3.3V conversion stage with EMI-optimized switching to avoid audible noise coupling into analog audio paths.

Use Value: Proprietary gate driver eliminates >30MHz SW node ringing-reducing conducted EMI that would otherwise modulate audio DAC clocks.

Use Scenario: Providing 3.3V/2.5V rails for Ethernet PHYs, PoE controllers, and packet buffer memory in SOHO switches and Wi-Fi access points.

IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC solution supporting 85°C ambient operation in sealed plastic enclosures.

Use Value: TSOT26 package (θ_JA = 70°C/W) sustains 2.5A output at +70°C ambient-enabling fanless thermal design in space-constrained networking hardware.

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 (Monolithic Power)	2A output, 3.3–36V input, 2MHz fixed frequency, no integrated BST capacitor requirement.	Lacks proprietary EMI-reduction gate driver; higher radiated emissions in unshielded layouts.	Select when wider input range and higher switching frequency are prioritized over EMI compliance in cost-sensitive consumer designs.
TPS562210A (Texas Instruments)	2.5A output, 4.5–18V input, D-CAP2 control, 1.5MHz switching, integrated BOOT diode.	Requires external BOOT diode in some configurations; less optimized for ultra-low EMI than AP62250's ringing-free SW node.	Prefer when system-level D-CAP2 loop stability with ceramic output caps is required, and EMI filtering budget allows additional ferrite beads.

Compared with MP2451DT-LF-Z and TPS562210A, the AP62250WU-7 delivers superior EMI performance via its proprietary gate driver, tighter reference voltage tolerance (±1% vs. ±2%), and lower quiescent current (155μA vs. 250–320μA), making it optimal for noise-sensitive, battery-backed, or thermally constrained applications where SW node integrity is critical.

Availability

AP62250WU-7 is available at Aetrix Electronics and suitable for flat-panel display power supplies, FPGA core rails, home audio amplifiers, and network infrastructure equipment requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AP62250WU-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 AP62250 belongs to Diodes' high-efficiency synchronous buck converter product line-engineered specifically for EMI-critical, space-constrained point-of-load applications in consumer, industrial, and computing markets.

FAQ

What is the recommended input capacitor configuration for AP62250WU-7?

A minimum 10μF X5R/X7R ceramic capacitor placed close to the VIN and GND pins is required. For optimal EMI suppression and transient response, use two parallel capacitors: one 10μF (1206) and one 100nF (0603), both rated ≥25V. The 100nF capacitor must be placed nearest to the IC to shunt high-frequency switching noise directly to ground.

How does the AP62250WU-7 achieve EMI reduction without compromising efficiency?

The AP62250WU-7 uses a proprietary multi-level gate driver that actively damps SW node ringing above 100MHz while preserving fast MOSFET turn-on/off slew rates. This eliminates high-frequency spectral peaks without increasing switching losses-verified by measured radiated EMI plots showing >10dB improvement versus standard buck converters at 150MHz–1GHz.

Can the output voltage be adjusted below 0.8V using external circuitry?

No. The internal reference is fixed at 0.8V ±1%, and the feedback comparator is designed only for resistive divider configurations where V_OUT ≥ 0.8V. Attempting sub-0.8V regulation violates the device's electrical specifications and results in unstable or non-regulated output due to comparator saturation and insufficient headroom.

What thermal derating applies to AP62250WU-7 in TSOT26 package at 60°C ambient?

In TSOT26 package (θ_JA = 70°C/W), at 60°C ambient and 12V_IN/5V_OUT, maximum sustainable output current is ~2.3A before junction temperature exceeds +125°C. Derating follows linear curve in Figure 26 of DS42701 Rev. 2–2: output current decreases by ~0.012A/°C above 40°C ambient under full load conditions.

AP62250WU-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:: 2.5A

Frequency - Switching:: 1.3MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TSOT-26

AP62250WU-7 FAQ

1.How can I place an order for AP62250WU-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP62250WU-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 AP62250WU-7 reliable?

The price and inventory of AP62250WU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP62250WU-7 is usually 5 days.

3.What payment methods are accepted for AP62250WU-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP62250WU-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP62250WU-7?

AP62250WU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP62250WU-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 AP62250WU-7?

For technical support, including AP62250WU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP62250WU-7 requirements.

6.How does Aetrix verify that AP62250WU-7 is sourced from the original manufacturer or authorized distributors?

All AP62250WU-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 AP62250WU-7 meets industry standards.

7.What is the process for return or replacement of AP62250WU-7?

All AP62250WU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP62250WU-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 AP62250WU-7 part is unused and in its original packaging.

Return procedure for AP62250WU-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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