FAN6961 Datasheet | Fairchild Semiconductor

Features - - - - - - - - - - - - Boundary Mode PFC Controller Low Input Current THD Controlled On-Time PWM Zero-Current Detection Cycle-by-Cycle Current Limiting Leading-Edge Blanking instead of RC Filtering Low Start-up Current: 10µA Typical Low Operating Current: 4.5m A Typical Feedback Open-Loop Protection Programmable Maximum On-Time (MOT) Output Over-Voltage Clamping Protection Clamped Gate Output Voltage 16.5V Description The FAN6961 is an 8-pin, boundary-mode, PFC controller IC intended for controlling PFC preregulators. The FAN6961 provides a controlled on-time to regulate the output DC voltage and achieve natural power factor correction. The maximum on-time of the external switch is programmable to ensure safe operation during AC brownouts. An innovative multivector error amplifier is built in to provide rapid transient response and precise output voltage clamping. A builtin circuit disables the controller if the output feedback loop is opened. The start-up current is lower than 20µA and the operating current has been reduced to under 6m A. The supply voltage can be up to 25V, maximizing application flexibility. Applications - Electric Lamp Ballasts - AC-DC Switching Mode Power Converter .. - Open Frame Power Supplies and Power Adapters - Flyback Power Converters with ZCS / ZVS Ordering Information Part Number FAN6961SZ FAN6961DZ FAN6961SY Operating Temperature Range -40°C to +125°C -40°C to +125°C -40°C to +125°C Package 8-Pin, Small Outline Package (SOP) 8-Pin, Dual In-line Package (DIP) 8-Pin, Small Outline Package (SOP) Eco Status Ro HS Ro HS Green Packing Method Tape & Reel Tube Tape & Reel For Fairchild’s definition of “green” Eco Status, please visit: http://.fairchildsemi./pany/green/rohs_green.html. © 2008 Fairchild Semiconductor Corporation FAN6961 - Rev. 1.0.2 .fairchildsemi. - Boundary Mode PFC Controller Application Diagram Figure 1. Typical Application Block Diagram .. Figure 2. Function Block Diagram © 2008 Fairchild...