MC79076_07 Datasheet, PDF (1/13 Pages) Freescale Semiconductor, Inc – Electronic Ignition Control Circuit

Freescale Semiconductor
Technical Data
Electronic Ignition Control
Circuit
The 79076, in conjunction with an appropriate Freescale Power
Darlington Transistor, provides an economical solution for
automotive ignition applications. The 79076 offers optimum
performance by providing closed loop operation of the Power
Darlington in controlling the ignition coil current.
Features
• Hall or Variable Reluctance Sensor Input
• Ignition Coil Voltage Internally Limited to 375 V
• Coil Current Limiting to 7.5 A
• Output On–Time (Dwell) Control
• Dwell Feedback Control to Sense Coil Variation
• Pb-Free Packaging Designated by Suffix Code EG
Document Number: 79076
Rev. 3.0, 3/2007
79076
ELECTRONIC IGNITION CONTROL CIRCUIT
DW SUFFIX
EG (PB-FREE) SUFFIX
98ASB42567B
16-PIN SOIC
ORDERING INFORMATION
Device
MC79076DW/R2
MCZ79076EG/R2
Temperature
Range (T_A)
-30°C to 125°C
Package
16 SOIC
79076
POWER GROUND
RPM DETECT
CURRENT SENSE
DWELL CONTROL
DWELL
VCC
SIGNAL GROUND
BYPASS
REFERENCE
EST
BIAS VOLTAGE
ADVANCE
REFERENCE/DWELL
Figure 1. 79076 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2007. All rights reserved.