VB125SP

® VB125SP HIGH VOLTAGE IGNITION COIL DRIVER POWER IC TARGET DATA TYPE VB125SP s s s s s s VCL 370 V ICL 9A ICC 200 mA PRIMARY COIL VOLTAGE INTERNALLY SET COIL CURRENT LIMIT INTERNALLY SET LOGIC LEVEL COMPATIBLE INPUT BATTERY OPERATION SINGLE FLAG-ON COIL CURRENT TEMPERATURE COMPENSATED HIGH VOLTAGE CLAMP 10 DESCRIPTION The VB125SP is a high voltage power integrated circuit made using SGS-THOMSON Microelectronics Vertical Intelligent Power Technology, with vertical current flow power darlington and logic level compatible driving circuit. The VB125SP can be directly biased by using the 12V battery voltage, thus avoiding to use a low voltage regulator. It has built-in protection circuits for coil current limiting and collector voltage clamping. It is suitable as smart, high voltage, high current interface in advanced electronic ignition system. BLOCK DIAGRAM VCC 6 INPUT 9 1 PowerSO-10 CS 8 HVC TAB DRIVER FLAG FLAG 10 VOLTAGE REFERENCE THERMAL PROTECTION RSENSE 7 GND (Control) (*) Pins 1...5 September 1997 * GND (Power) 1/8 This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice. 1 VB125SP ABSOLUTE MAXIMUM RATING Symbol HV C IC VCC ICC IS VIN PTOT VESD VESD Tj TSTG Parameter Collector Voltage (Internally Limited) Collector Current (Internally Limited) Driving Stage Supply Voltage Driving Circuitry Supply Current Logic Circuitry Supply Ccurrent Input Voltage Power Dissipation ESD Voltage (HVC Pin) ESD Voltage (Other Pin) Operating Junction Temperature Storage Temperature Range Value -0.3V to VCLAMP 10 -0.2 to 40 400 100 -0.3 to 6 TBD -4 to 4 -2 to 2 -40 to 150 -55 to 150 Unit V A V mA mA V W KV KV °C °C THERMAL DATA Rthj-case Rthj-amb Thermal Resistance Junction - Case Thermal Resistance Junction - Ambient MAX MAX 1.2 62.5 °C/W °C/W CONNECTION DIAGRAM HVC VCC GND Cs INPUT FLAG 6 5 GND GND GND GND 10 1 GND PIN FUNCTION No 1-5 6 7 8 9 10 TAB (*) Pin 6 must be connected to pins 1-5 externally Name GND VCC GND CS INPUT FLAG HVC FUNCTION Emitter Power Ground Logic Supply Voltage Control Ground (*) Logic Level Supply Voltage Filter Capacitor Logic Input Channel Diagnostic Output Signal Primary Coil Output Driver 2/8 1 VB125SP ELECTRICAL CHARACTERISTICS (Vbat = 6 to 24V; -40°C