Dual switch-mode regulator IC

This IC eliminates two linear regulators and replaces them with precision switch mode regulators (SMPS). The chip also combines circuitry for two stepper motors, and a DC motor driver. Precision voltage regulation is achieved using an EEPROM programmable trim, allowing in-package voltage adjustment to 1% and oscillator trim of 1.5%. The chip uses a 1 /spl mu/m power IC process that incorporates both 60 and 40 V DMOS structures, 10 V CMOS, and 5 V CMOS and n-p-n bipolar devices. This device incorporates a two-process-step EEPROM option for programming capability. The IC is available with two variants of SMPS, a conventional buck regulator and a burst or ripple type hybrid regulator.