VB325SP

® VB325SP HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C. TYPE VB325SP s s Vcl 380V Icl 10A ICC 150mA PRIMARY COIL VOLTAGE INTERNALLY SET COIL CURRENT LIMIT INTERNALLY SET s LOGIC LEVEL COMPATIBLE INPUT s DRIVING CURRENT QUASI PROPORTIONAL TO COLLECTOR CURRENT s SINGLE FLAG-ON COIL CURRENT s LOW VOLTAGE CLAMP THERMAL SHUTDOWN DESCRIPTION The VB325SP is a high voltage power integrated circuit made us ing the STMicroelectronics VIPower™ M1-3 technology, with vertical current flow pow er dar lington and logic l evel compatible driving circuit. The enable pin allows to externally block the s witch when the i nput i s on. B uilt-in protection c ircuit for c oil c urrent limiting a nd collector voltage clamping allows the device to be used as smart, high voltage, high current interface BLOCK DIAGRAM VCC 10 1 PowerSO-10™ in advanced electronic ignition system. If the input signal from the micro happens to remain high, the device pr otects i tself ag ainst ov er-heating by forcing collector current to s mooth decrease (low voltage clamp feature) and no und esidered spark occurs (see figure 4). BD HVC VIN DRIVER QUASI PROP. BASE CURRENT DIAGNOSTIC OUTPUT VR LIMITER RSENSE VCC VF1 REFERENCE VLIM VTH THERMAL PR OTECTION SN E LGND GND November 2003 1/9 http://www.Datasheet4U.com VB325SP ABSOLUTE MAXIMUM RATING Symbol HVc IC IC(gnd) VCC Is Is(gnd) VIN IIN fIN VOUT(flag) IOUT(flag) Pmax Es/b VESD VESD VESD IBD VBD Tj Tstg VE IE Parameter Collector voltage (Internal...