STR3A153 - Sanken

STR3A153 PWM Off-Line Switching Regulator ICs

STR3A100 series are power ICs for switching power supplies, incorporating a power MOSFET and a current mode PWM controller IC in one package. Including a startup circuit and a standby function in the controller, the product achieves low power consumption, low standby power, and high cost-effectiveness in power supply systems, while reducing external componen.

Features

• Current mode PWM control
• Built-in Random Switching function: reduces EMI noise, simplifies EMI filters, and cuts cost by external part reduction
• Built-in Slope Compensation function: avoids subharmonic oscillation
• Built-in Leading Edge Blanking (LEB) function
• Auto Standby function: ▫ Input power, PIN < 10 mW at no load with low power consumption shunt regulator ▫ Normal load operation: PWM switching ▫ Light load operation: Standby mode (Burst oscillation) Continued on the next page… Package: DIP8 Not to scale Description STR3A100 series are power ICs for switching power supplies, in.