ROHM BM1Q041FJ-E2, DC-DC DC-DC Converter 8-Pin, SOP-J8

The ROHM quasi-resonant controller typed AC or DC converter IC provides an optimum system for all products that include an electrical outlet. Quasi-resonant operation enables soft switching and helps to keep EMI low. With MOSFET for switching and current detection resistors as external devices, a higher degree of design freedom is achieved. As built in HV starter circuit, it contributes to low consumption power and high speed start. Because the built-in burst mode is reduced switching loss and IC consumption current is low, Stand-by power is very low. Because built-in soft-start, burst mode, over current limiter which is cycle-by-cycle, over load protection, over voltage protection, CS open protection and so on and highly safety.

Frequency reduction function
AC voltage correction function
VCC pin under voltage protection
VCC pin overvoltage protection
Over-current protection cycle-by-cycle
OUT pin H voltage 12V clamp
Soft start
ZT trigger mask function
ZT overvoltage protection
FB overload protection auto-restart
CS pin open protection auto-restart