TOP204Y Off-line PWM Switch IC
- Supply Current: 1.4 mA
- Supply Voltage: 85-265VAC
- Output Voltage: 5.8 V
- Power (Watts): 50W
- Switching Frequency-Max:Â 100 kHz
- Package: TO-220
-  Built-in start-up and current limit reduce DC losses • Low capacitance 700 V MOSFET cuts AC losses • CMOS controller/gate driver consumes only 6 mW
- 70% maximum duty cycle minimizes conduction losses.
- Low Cost Replacement for Discrete Switchers.
- Easily interfaces with both opto and primary feedback .
- Supports continuous or discontinuous mode of operation
TOP221PN Off-line PWM Switch IC
- Supply current: 1.2mA
- Supply Voltage: 85-265VAC
- Output Voltage: 5.7 V
- Power (Watts): 9W
- Switching Frequency-Max: 100 kHz
- Package: DIP-8
- Lowest cost, lowest component count switcher solution
- Â Cost competitive with linears above 5 W
-  Very low AC/DC losses – up to 90% efficiency
- Â Built-in Auto-restart and Current limiting
- Latching Thermal shutdown for system level protection
- Implements Flyback, Forward, Boost or Buck topology
- Works with primary or opto feedback
- Stable in discontinuous or continuous conduction mode
- Source connected tab for low EMI
- Circuit simplicity and Design Tools reduce time to market