Part Number : BH0270A

Function : Green Mode Fairchild Power Switch (FPS™)

Maker : Fairchild Semiconductor

Pinouts :
BH0270A datasheet

Description :

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.



1. Brownout Protection with Hysteresis

2. Built-In 5ms Soft-Start Function

3. Internal Avalanche-Rugged 700V SenseFET

4. No Acoustic Noise During Light-Load Operation

5. High-Voltage Startup

6. Linearly Decreasing PWM Frequency to 18KHz

Datasheet PDF Download :
BH0270A pdf

Others datasheet of same file :

BH0170, BH0270, BH0270A, BH0370

2021/06/14 09:34 2021/06/14 09:34