BH0170A

FSBH0F70A_F116, FSBH0170/0270/0370_F116 — Green Mode Fairchild Power Switch (FPS™) April 2011 FSBH0F70A _F116, FSBH0170_F116, FSBH0270_F116, FSBH0370_F116 Green Mode Fairchild Power Switch (FPS™) Features                  Brownout Protection with Hysteresis Built-In 5ms Soft-Start Function Internal Avalanche-Rugged 700V SenseFET Low Acoustic Noise During Light-Load Operation High-Voltage Startup Linearly Decreasing PWM Frequency to 18KHz Peak-Current-Mode Control Cycle-by-Cycle Current Limiting Leading-Edge Blanking (LEB) Synchronized Slope Compensation Internal Open-Loop Protection VDD Under-Voltage Lockout (UVLO) VDD Over-Voltage Protection (OVP) Internal Auto-Restart Circuit (OVP, OTP) Constant Power Limit (Full AC Input Range) Internal OTP Sensor with Hysteresis VIN Pin for Pull-HIGH Latch Function and Pull-LOW Auto-Recovery Protection Description The highl y i ntegrated F SBH-series c onsists of an integrated curr ent-mode Puls e W idth Mod ulator (PW M) and an av alanche-rugged 700V S enseFET. It is specifically designed for high-p erformance offlin e Switched-Mode Po wer Su pplies (SMPS) with minimal external components. The integrate d PW M controller featur es includ e a proprietary green-mode function that provi des off-time modulation to line arly decrease the s witching frequency at lig ht-load conditions t o minimiz e sta ndby power consumption. To avoid aco ustic-noise pr oblems, the minimum PW M frequenc y i s set above 18kHz. T his green-mo...