Versatile PWM Controller
Features
• Current Mode Control
• Pulse by Pulse Current Limiting
• Low External Components
• 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
Description
The FAN7554 is a fixed frequency current mode PWM
controller. It is specially designed for off-line and DC to DC
converter applications with minimal external components.
These integrated circuits feature a trimmed oscillator for
precise duty cycle control, a temperature compensated
reference, an ON/OFF control, a high gain error amplifier, a
current sensing comparator, and a high current totem-pole
output. The FAN7554 has various protection functions such
as an over load protection, an over current protection, and
the over voltage protection, which include built-in auto
restart circuit. The FAN7554 is available in the 8-DIP
package as well as the 8-SOP package.
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