FAN7554D

多功能PWM控制器 Versatile PWM Controller

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.

Features

• Current Mode Control

• Pulse by Pulse Current Limiting

• Low External Components

• Under Voltage LockoutUVLO: 9V/15V

• Stand-by Current: Typ. 100uA

• Power Saving Mode Current: Typ. 200uA

• Operating Current: Typ. 7mA

• Soft Start

• On/Off Control

• Over Load ProtectionOLP

• Over Voltage ProtectionOVP

• Over Current ProtectionOCP

• Over Current LimitOCL

• Operating Frequency up to 500kHz

• 1A Totem-Pole Output Current