TOP233PN integrated off-line switcher IC DIP8

Description

The TOP233PN is a member of the TOPSwitch-FX family of integrated off-line switchers from Power Integrations . It integrates a high-voltage power MOSFET, PWM control, and fault protection circuitry onto a single CMOS chip, making it a complete solution for designing compact, energy-efficient AC-DC power supplies .

Key Specifications

Key Features & Design Notes

• Fully Integrated: The TOP233PN eliminates the need for external soft-start components and provides line under-voltage (UV) and overvoltage (OV) detection with a single resistor, reducing overall system cost and component count .

• Design Flexibility: It features externally settable accurate current limit and a wider duty cycle to support more power and smaller input capacitors .

• Fault Protection: Built-in protections include hysteretic thermal shutdown (for automatic recovery) and current limiting to ensure robust operation .

• Remote ON/OFF: The device supports active-on and active-off remote capability for flexible system control .