STRA6061H - Sanken Electric

STRA6061H STR-A6000H Series PWM Off-Line Switching Regulator ICs

The STR-A6059H, STR-A6061H, STR-A6062H, and STR-A6069H are power ICs for switching power supplies, incorporating a power MOSFET and a current mode PWM controller IC in one package. To achieve low power consumption, these products include a startup circuit and a standby function in the controller. The switching modes are automatically changed according to loa.

Features

▪ Current mode PWM control ▪ Brown-In and Brown-Out function: auto-restart, prevents excess input current and heat rise at low input voltage ▪ Auto Standby function: improves efficiency by Burst mode operation in light load ▫ Normal load operation: PWM mode ▫ Light load operation: Burst mode ▪ No load power consumption < 25 mW ▪ Operating frequency, fOSC(AVG)(typ) = 100 kHz ▪ Random Switching function: reduces EMI noise, and simplifies EMI filters ▪ Slope Compensation function: avoids subharmonic oscillation ▪ Leading Edge Blanking function Continued on the next page… Description The STR-A605.