Part Number : BH0270A
Function : Green Mode Fairchild Power Switch (FPS™)
Manufacturers : Fairchild Semiconductor
The highly integrated FSBH-series consists of an integrated current-mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components.
The integrated PWM controller features include a proprietary green-mode function that provides off-time modulation to linearly decrease the switching frequency at light-load conditions to minimize standby power consumption. To avoid acoustic-noise problems, the
minimum PWM frequency is set above 18kHz. This green-mode function enables the power supply to meet international power conservation requirements.
The PWM controller is manufactured using the BiCMOS process to further reduce power consumption. The FSBH-series turns off some internal circuits to improve power saving when VFBis lower than 1.6V, which allows an operating current of only 2.5mA.
BH0270A Datasheet PDF Download
Other data sheets within the file :