Fairchild Semiconductor Introduces New FAN7554 PWM Controller IC
Fairchild Semiconductor (South Portland, ME) has introduced its FAN7554 versatile PWM controller IC for use with power MOSFETs in off-line, dc/dc conversion and other switch-mode power supply applications, such as those found in desktop computers, monitors and power adapters.
The FAN7554 is a current-mode PWM controller that operates up to 500kHz. Fairchild Semiconductor claims that the device integrates control and power-savings circuitry to eliminate several external components and reduce system power consumption. The FAN7554 incorporates soft-startup circuitry, over-voltage protection, over-current protection, over-load protection and over-current latch-up protection. FAN7554 is available in an eight-lead DIP or SOP package.