KP3224DP

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Product Description

KP3224DP is a high-performance, low-cost offline PWM-controlled power switch IC designed for small-power offline Buck and Buck-Boost converter applications. It integrates a 650V high-voltage MOSFET and high-voltage startup circuit, reducing external component count and simplifying power supply design.
The device uses multi-mode PWM control technology where the switching frequency automatically changes according to load conditions. This improves efficiency, enhances line/load regulation, reduces standby power consumption, and eliminates audible switching noise.
KP3224DP provides a fixed 12V output solution and includes complete protection functions such as overload protection, cycle-by-cycle current limiting, over-voltage protection, UVLO, VDD protection, and thermal protection. It is suitable for compact AC-DC power supplies used in appliances and industrial control systems.

Product group	Integrated Circuit (IC)
Package	DIP-7
Model Number	KP3224DP
Operating Mode	Multi-Mode PWM Offline Power Switch with Fixed 12V Output (Supports Buck and Buck-Boost Topologies)
Product Keywords	Offline PWM Power Switch, Buck Power Switch, Buck-Boost Power Switch, Fixed 12V Power Switch, AC-DC Power IC
Protections/Features	Over-Load Protection (OLP), Cycle-by-Cycle Over-Current Protection (OCP), Output Over-Voltage Protection (OVP), VDD Over-Voltage Protection, Under-Voltage Lockout (UVLO), Soft Start, Green Mode, Multi-Mode PWM Control
Internal MOS	Integrated 650V High-Voltage MOSFET
Output Current	Up to 500mA (85–265VAC) / Up to 600mA (150–265VAC) Continuous Load; Peak Load up to 700mA / 800mA (application dependent)
Application Area	Small Home Appliances, Industrial Control Power Supplies, Offline Buck/Buck-Boost Power Supplies, Auxiliary Power Supplies

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