A1203

A1202 and A1203 Continuous-Time Bipolar Switch Family FEATURES AND BENEFITS AEC-Q100 automotive qualified Continuous-time operation □□Fast power-on time □□Low noise Stable operation over full operating temperature range Reverse-battery protection Solid-state reliability Factory-programmed at end-of-line for optimum performance Robust EMC performance High ESD rating Regulator stability without a bypass capacitor PACKAGES: Not to scale 3-pin SOT23W (suffix LH) NOT FOR NEW DESIGN 3-pin SIP, matrix HD style (suffix UA) 3-pin SIP, chopper style (suffix UA) DESCRIPTION The Allegro™ A1202 and A1203 Hall-effect bipolar switches are next-generation replacements and extension of the popular Allegro A3133 andA3132 bipolar switch product line. Overall, theA120x family, produced with BiCMOS technology, consists of continuous-time devices that feature fast power-on time and low-noise operation. Device programming is performed after packaging, to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique Hall element geometries and low-offset amplifiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress. TheA120x Hall-effect bipolar switches include the following on a single silicon chip: voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor. The integrated vol...