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FAN7554
Versatile PWM Controller
Features Current Mode Control Pulse by pulse current limiting Low external components Lowest cost SMPS solution Under-Voltage Lockout( UVLO): 9V/15V Stand-by Current: Typ. 100uA Power Saving Mode Current: Typ. 200uA Operating Current: Typ. 7mA Soft start On/Off control Over Load Protection(OLP) Over Voltage Protection(OVP) Over Current Protection(OCP) Over Current Limit(OCL) Operating Frequency up to 500kHz 1A Totem-pole Output Current
Applications Off-Line & DC-DC Converter
DescriptionFAN7554 is fixed frequency current-mode PWM controller.
It is specially designed for off-line and DC-to-DC converter
applications with minimal external components. These inte-
grated circuits feature a trimmed oscillator for precise duty
cycle control, a temperature compensated reference, high
gain error amplifier, current sensing comparator, and a high
current totempole output. Ideally suited for driving a power
MOSFET. In addition to the general protection function of
PWM IC, FAN7554 has various protection function such as
Over Load Protection, Over Current Protection, Over Volt-
age Protection, which include Built-in auto-restart circuit,
and Over Current Latch. Moreover, it corporates on-off con-
trol circuit and soft start circuit. It also offer low power con-
sumption is stand-by condition.
