The ROHM PWM type DC/DC converter IC with integrated switching MOSFET provides an optimal system for all products that require an electrical outlet. This IC supports both isolated and non-isolated devices and enables simpler designs of various types of low power consumption electrical converters. The built-in 800 V startup circuit contributes to low power consumption. Power supplies can be designed flexibly by connecting a current detection resistor for the switching externally. Current is restricted in each cycle and excellent performances are demonstrated in a bandwidth and transient response since a current mode control is utilized. The switching frequency is 65 kHz by a fixed method. At light load, the frequency is reduced, and high efficiency is achieved.

PWM current mode method
Frequency hopping function
Burst operation at light load
Frequency reduction function
Built-in 800 V startup ircuit
Built-in 800 V switching MOSFET
VCC UVLO (under voltage lockout)
VCC OVP (over voltage protection)
Soft start funct