The MC79076 electric circuit is one kind of new auto-ignition controller which Motorola (Motorola) the company promotes. When practical application, best with Motorola production Darington power tube coordination use. Because MC79076 can provide the closed-loop control to the Darington power tube, thus MC79076 has the superior performance in the ignition coil electric current’s control aspect. Compares with other electric firing circuit, such auto-ignition control has the structure using the electric circuit to be simple, ignition control precise reliable, and the cost is relatively inexpensive and so on characteristics. The MC79076 present market price probably is 20 Yuan.
MC79076 has two kind of seal forms, the model is the MC79076 use plastic SO-16 seal form, another kind of model is the MCCF79076 use inversion welding (Flip-Chip) the technology connects the pin with the internal chip, but is not uses traditional the lead-out wire connection mode, this kind of seal enables MC79076 to be higher than the present all electric circuits in the operating temperature scope operational reliability. Its seal form as shown in Figure 1.
1 principal characteristic
The MC79076 main feature is as follows:
* convex welds the arrangement but actually;
* the ignition coil voltage is not higher than 375V;
* the coil current is not bigger than 7.5A;
* the output may real-time (static control);
* coil static state reaction control;
* Hall sensor input;
* operating temperature scope for - 30℃~ 140℃.
2 pin functions
Table 1 arranges in order is the MC79076 pin function explanation.
Table 1 MCC79076 pin function
| Pin serial number | Function | Pin serial number | Merit Can |
| 1 | Digital place | 8 | Ignition signal input end |
| 2 | Output current examination | 9 | It is estimated that input |
| 3 | Actuation level output | 10 | Reference output |
| 4 | Power source | 11 | Bypass input |
| 5 | Simulation place | 12 | 900 RPM surveys |
| 6 | Reference static state input | 13 | Static control |
| 7 | Initialization input |
3 using electric circuit
MC79076 model application electric circuit as shown in Figure 2. The electron ignition controller has widely applied in the modern automobile electron ignition system, therefore, may believe that will have the low cost and redundant reliable superiority MC79076 will obtain the widespread application without doubt.
