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E-L6219DS Datasheet(PDF) 6 Page - STMicroelectronics |
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E-L6219DS Datasheet(HTML) 6 Page - STMicroelectronics |
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6 / 16 page  Block diagram L6219 6/16 Figure 2. SO24/PDIP24 pins connection (top view) Table 3. Pin functions Pin # Name Description 1, 2 Output A See pins 5, 21 3, 23 Sense resistor Connection to lower emitters of output stage for insertion of current sense resistor 4, 22 Comparator input Input connected to the comparators. The voltage across the sense resistor is feedback to this input throught the low pass filter RC CC. The higher power transistors are disabled when the sense voltage exceeds the reference voltage of the selected comparator. When this occurs the current decays for a time set by RT CT (toff = 1.1 RT CT). See Figure 3. 5, 21 Output B Output Connection. The output stage is a "H" bridge formed by four transistors and four diodes suitable for switching applications 6, 19 Ground See pins 7, 18 7, 18 Ground Ground connection. With pins 6 and 19 also conducts heat from die to printed circuit copper 8, 20 Input 0 See Input 1 (pins 9, 17) 9, 17 Input 1 These pins and pins 8, 20 (input 0) are logic inputs which select the outputs of the comparators to set the current level. Current also depends on the sensing resistor and reference voltage. See functional description |
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