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Name: AO4468
Brand: Alpha & Omega Semiconductor Inc.
SKU: AO4468
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Alpha & Omega Semiconductor Inc. AO4468

Part No.:: AO4468

Manufacturer:: Alpha & Omega Semiconductor Inc.

Package:: 8-SOIC

Datasheet:: AO4468.pdf

Description:: MOSFET N-CH 30V 10.5A 8SOIC

In Stock:: 1540

Quantity:: Add To Cart

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AO4468 Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Not For New Designs
FETType:
N-Channel
Technology:
MOSFET (Metal Oxide)
DraintoSourceVoltage(Vdss):
30 V
Current-ContinuousDrain(Id)@25°C:
10.5A (Ta)
DriveVoltage(MaxRdsOnMinRdsOn):
4.5V, 10V
RdsOn(Max)@IdVgs:
14mOhm @ 11.6A, 10V
Vgs(th)(Max)@Id:
3V @ 250µA
GateCharge(Qg)(Max)@Vgs:
24 nC @ 10 V
Vgs(Max):
±20V
InputCapacitance(Ciss)(Max)@Vds:
1200 pF @ 15 V
FETFeature:
-
PowerDissipation(Max):
3.1W (Ta)
OperatingTemperature:
-55°C ~ 150°C (TJ)
MountingType:
Surface Mount

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AO4468 information

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AO4468 Typical application Circuitry

AO4468

The AO4468 is a high-performance, N-channel MOSFET from Alpha & Omega Semiconductor, designed for fast switching applications. It is widely used in power management technology, especially in DC-DC converters, power supplies, and load switch applications. Its key features include low on-resistance (R_DS(on)), high current capability, and a compact SOP-8 package, making it suitable for high efficiency, space-constrained applications.

Application Scenarios and Parameter Features

The AO4468 is characterized by a 30V drain-source voltage (V_DS), a continuous drain current (I_D) of up to 20A, and a low on-resistance of 8.5 mΩ at V_GS = 10V. These specifications make it highly suitable for applications requiring efficient power handling and switching, such as in portable electronics, computing systems (for CPU and GPU power management), and in motor control circuits for drones or small electric vehicles.

One particular use case for it is in synchronous buck converters, a kind of DC-DC converter that is frequently used in portable devices to step down voltage with excellent efficiency.

Specific Circuit Connection

Incorporating the AO4468 into a synchronous buck converter involves detailed planning to ensure efficient power conversion. Below are detailed circuit connections and considerations:

1. Power Switch Connection: First, integrate the AO4468 as the low-side switch in the synchronous buck converter. Connect the Drain (D, pin 5-8) to the system ground. This provides the returning current's path when the low-side switch is in the on position.

2. Control Signal Connection: The Gate (G, pin 4) should be connected to the output of the PWM controller. A gate resistor (Rg) might be needed between the PWM controller and the Gate of the AO4468 to control the switching speed and minimize ringing.

3. Source Connection: The load's negative terminal is connected to the Source (S, pins 1-3). This configuration allows the AO4468 to complete the circuit path when turned on, allowing current to flow through the load.

4. Bootstrap Diode and Capacitor: For high-side drive in applications where the AO4468 is used, a bootstrap diode and capacitor are required to provide the gate drive voltage. However, in a low-side application like a synchronous buck converter, these are not required for the AO4468 itself but are relevant for the high-side MOSFET.

Design-Related Issues

When constructing the circuit, it is important to consider the following:

- Voltage of Gate Drive: To fully switch on the MOSFET and reduce conduction losses, make sure the gate drive voltage is within the recommended range on the AO4468.

- Thermal Management: The AO4468 can handle significant current, but it also generates heat. Make that there is enough ventilation or heat sinking to keep the MOSFET within its working temperature range.

- Parasitic Inductance: Minimize parasitic inductance in the PCB layout to reduce voltage spikes at the drain of the AO4468 during switching. Short, wide traces and proper grounding are crucial.

- Protection: Consider implementing over-current and over-temperature protection mechanisms to safeguard the AO4468 and the overall circuit from abnormal conditions.

By carefully considering these design principles and ensuring proper connections to the AO4468, developers can effectively integrate this N-channel MOSFET into synchronous buck converters or similar power management applications, achieving high efficiency and performance in compact, demanding environments.

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6. What is the process for return or replacement of AO4468?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AO4468 we delivered, we will accept the replacement or return of the AO4468 only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of AO4468.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations