Part # FAN7554 datasheet

Part Manufacturer: Fairchild Semiconductor

Fairchild Semiconductor

Part Description: FAN7554 Versatile PWM Controller

Part Details: FAN7554 Versatile PWM Controller Features Description · Current mode control The FAN7554 is a fixed frequency current mode PWM · Pulse by pulse current limiting controller. It is specially designed for off-line and DC to DC · Low external components converter applications with minimal external components. · Under voltage lockout(UVLO): 9V/15V These integrated circuits feature a trimmed oscillator for · Stand-by current: typ. 100uA precise duty cycle control, a temperature compensated · Power saving mode current: typ. 200uA reference, an ON/OFF control, a high gain error amplifier, a · Operating current: typ. 7mA current sensing comparator, and a high current totem-pole · Soft start output. The FAN7554 has various protection functions such · On/off control as an over load protection, an over current protection, and · Over load protection(OLP) the over voltage protection, which include built-in auto · Over voltage protection(OVP) restart circuit. The FAN7554 is available in the 8-DIP · Over current protection(OCP) package as well as the 8-SOP package. · Over current limit(OCL)· Operating frequency up to 500kHz 8-DIP · 1A totem-pole output current Applications 1 · Off-Line & DC-DC converter 8-SOP 1 Rev. 1.0.3 ©2003 Fairchild Semiconductor Corporation FAN7554 Internal Block Diagram Rt/C Rt/ t Vre Vr f e Vcc 4 8 7 OVP 3.5 3. V +

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FAN7554.pdf Datasheet