2-Phase Stepper Motor Bipolar Driver IC (4W1-2 Phase Excitation/Micro-step Support)
A3957SLB
sExternal
Dimensions
*1
(Unit: mm)
24
24
19
10.0/10.65
7.40/7.60
7.40/7.60
0.40/1.27
1
0.33/0.51
0.33/0.51
1
1.27
BSC
0°/ 8°
0.23/0.32
SEATING
PLANE
15.2/15.6
2.35/2.65
0.10MIN
q
Pin material: copper, pin surface treatment: solder plating
q
Package index may be *1.
q
Allowable variation in distance between
leads is not cumulative.
q
Web (batwing) type lead frames are used for pin
6, 7, 18, 19. The pins are connected to GND.
A3957SLB
97
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