HIGH VOLTAGE IGNITION COIL DRIVER POWER IC
Description
®
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 connec...
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