The TOP253PN is a high-performance, off-line switcher IC featuring an integrated 700V power MOSFET. Designed for energy-efficient power supplies, it offers precise control and protection for industrial and consumer electronic applications.
TOP253PN – Power Integrations (TOPSwitch®-HX Series)
The component shown in your image is TOP253PN, manufactured by Power Integrations. It belongs to the TOPSwitch®-HX family of integrated offline switching power supply ICs.
Product Specifications
Parameter
Specification
Manufacturer
Power Integrations
Part Number
TOP253PN
Series
TOPSwitch®-HX
Package
DIP-8 (7 Leads), Through-Hole
Type
Offline PWM Switcher / AC-DC Converter IC
Integrated MOSFET
700 V Power MOSFET
Switching Frequency
66 kHz
Input Voltage
85–265 VAC Universal Input
Output Power
Up to 25 W (Open Frame), up to 38 W (Peak/Adapter Design)
Operating Temperature
-40°C to +150°C
Protection
Over Temperature, Over Voltage, Current Limit, Auto-Restart
RoHS
Yes
The TOP253PN integrates a 700 V power MOSFET, PWM controller, startup circuitry, protection functions, and control logic into a single IC, simplifying the design of isolated flyback power supplies.
Typical Applications
SMPS Power Supplies
LED Drivers
Battery Chargers
Industrial Control Power Supplies
Home Appliance Power Supplies
Adapters & Chargers
Set-Top Boxes
TV & Monitor SMPS
Printer Power Supplies
Key Features
Universal AC input (85–265 VAC)
Integrated 700 V MOSFET
EcoSmart® low no-load power consumption
Soft-start function
Auto-restart protection
Thermal shutdown
Line under/over-voltage protection
High efficiency with minimal external components
