INN3464C-TL Power Supply IC for Compact AC DC Power Conversion

ElecSuppliers Part Number GuideAug 15, 2026

The INN3464C-TL is a power conversion IC from the Power Integrations InnoSwitch3 family. It is designed for offline power supply applications where the circuit needs to convert AC input into a regulated DC output while keeping the overall design compact.

This type of IC is particularly useful in products where the power supply cannot take up a large part of the enclosure.

Rather than building the switching stage entirely from separate controller and power components, an integrated power conversion device can bring several important functions into one package.

What INN3464C-TL Does

At the heart of the application is an isolated switching power supply.

The IC controls the switching process that transfers energy through the transformer from the primary side to the secondary side. The transformer provides the required electrical isolation while the secondary circuit produces the DC output used by the rest of the product.

This makes the device suitable for many small and medium power AC DC designs.

The surrounding transformer, rectification components, capacitors and feedback circuitry still need to be selected according to the target output.

Compact Power Supply Design

One of the practical reasons to consider INN3464C-TL is integration.

A modern electronic product may contain a processor, wireless module, sensors and other circuitry while leaving very little room for the power supply.

Reducing the number of discrete components around the power conversion stage can help free up PCB space.

This is especially useful in wall adapters, embedded power supplies and products where the complete electronics need to fit inside a small enclosure.

InnoSwitch3 Architecture

INN3464C-TL belongs to the InnoSwitch3 family, which is designed around a high level of power supply integration.

The architecture combines the primary switching and control functions with other elements required for an isolated power converter.

For designers, this can simplify the power supply compared with building the same functions from several separate ICs and discrete switching components.

However, integration does not remove the need for careful transformer selection and PCB design.

Typical Applications

INN3464C-TL can be considered for a variety of offline power applications, including:

• AC DC adapters

• Consumer electronics

• Battery chargers

• Smart home devices

• IoT equipment

• Industrial control products

• Auxiliary power supplies

• Embedded electronic equipment

The appropriate application depends on the required input range, output voltage, output power and isolation requirements.

Transformer Design Still Matters

Even with an integrated power IC, the transformer remains one of the key components in an isolated flyback power supply.

Transformer turns ratio, core selection, winding arrangement and insulation all affect the performance of the finished converter.

PCB layout also needs careful attention around the primary switching node and the isolation barrier.

For this reason, selecting INN3464C-TL is only one part of designing the complete power supply.

Thermal Considerations

Power conversion always produces some heat.

In a compact adapter or embedded power module, there may be little space for additional cooling hardware. Component placement and PCB copper therefore become important parts of the thermal design.

The actual operating temperature should be evaluated under the worst expected input and output conditions rather than relying only on the nominal power rating.

Keeping switching losses under control can make a significant difference in a small enclosure.

INN3464C-TL Replacement

When looking for a replacement, using another InnoSwitch3 device is not automatically enough.

The replacement should be checked for its power capability, input requirements, package, pin arrangement, control characteristics and transformer requirements.

A device with a similar product name may still require changes to the surrounding circuit.

For an existing production design, the safest approach is to compare the complete electrical specifications before approving a substitute.

Why the Exact MPN Matters

The complete INN3464C-TL designation should remain unchanged in the BOM and purchasing documentation.

This is particularly important for semiconductor components because small differences in suffixes can identify different package, ordering or product configurations.

Searching only for "InnoSwitch3 power IC" is useful when researching alternatives, but it is not precise enough when sourcing the exact component used in an existing design.

INN3464C-TL Supplier Search

For purchasing, use INN3464C-TL as the primary search term.

When comparing suppliers, check the complete MPN, manufacturer, package, product status and available quantity. For production applications, it is also worth confirming that the supplied component matches the exact ordering code specified in the original design.

For engineers developing a compact isolated AC DC power supply, INN3464C-TL is a practical option when integrated power conversion and efficient PCB utilization are important design priorities.