FB3480 NEW HIGH SPEED CURRENT MODE CONTROL IC MASTER CHIP
M.K. Nalbant, W. Davis · 1989
The concept of a reconfigurable high speed switching regulator controller integrated circuit is introduced. The FB3480 is an analog array chip with several pre-optimized functional blocks usually found in high performance controllers. In addition the chip has several large sections that can be reconfigured to meet additional specific design needs. The FB3480 contains a high speed error amplifier (BW>4MHz), a precision bandgap voltage reference (l%), a precision high speed oscillator (f>lMHz), dual totem pole output stages (IOUT>1.5A), undervoltage lockout, high speed ECL /EFL logic and many uncommitted components for circuit customization. Th following is a discussion of the FB3480 along with two of its derivatives, th ML4825 and the ML4809.