![](/html/LSI/64222/page7.png)
CS1 1
CS2 20
FWD/REV 19
S1 15
S2 16
S3 17
BRAKE 9
+V
COMMUTATION
SEQUENCE
4
SELECT LOGIC
+V
INPUT
DECODER
8
OUTPUT
ENCODER
COMMON
5
6
OUTPUT
DRIVERS
2 O1
3 O2
4 O3
6 O4
7 O5
8 O6
ENABLE 10
R
POSITIVE
EDGE
DETECTOR
RQ
OVERCURRENT
SENSE
12
R
+
S
-
POSITIVE EDGE
DETECTOR
V TRIP 13
-
+V
+
+V
.001µF
33K
14
SAWTOOTH
OSCILLATOR
NOTE: With indicated components,
oscillator frequency is approximately 30KHz.
GND
FIGURE 6. LS7260 AND LS7262 BLOCK DIAGRAM AM
11 VSS
18 VDD