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M54646AP 数据表(PDF) 1 Page - Mitsubishi Electric Semiconductor

部件名 M54646AP
功能描述  2-PHASE STEPPER MOTOR DRIVER
Download  6 Pages
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制造商  MITSUBISHI [Mitsubishi Electric Semiconductor]
网页  http://www.mitsubishichips.com
标志 MITSUBISHI - Mitsubishi Electric Semiconductor

M54646AP 数据表(HTML) 1 Page - Mitsubishi Electric Semiconductor

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2-PHASE STEPPER MOTOR DRIVER
M54646AP
MITSUBISHI <CONTROL / DRIVER IC>
PIN CONFIGURATION (TOP VIEW)
BLOCK DIAGRAM
Outline 28P4B
DESCRIPTION
The M54646AP is a semiconductor IC to drive bipolar stepper
motors by controlling winding current with reference to a
designated current level.
FEATURES
q Wide driver voltage range (10 – 40V)
q Wide output current control range (20 – 800mA)
q Bipolar and constant current control
q Built-in flywheel diode
q Built-in thermal protection circuit
APPLICATION
Office automation equipment such as printers, FDDs, HDDs and
facsimiles
FUNCTION
M54646AP Integrated Circuit drives two-phase bipolar stepper
motors while controlling winding current: It controls winding current
direction by inputting phases (pins 14 and 15) and, at the same
time, controls winding current amperage with terminals VR (pins
and
).
Provided with control circuits that output two phases, this IC is
sufficient to drive a two-phase bipolar stepper motor.
2
27
20 21 22 23
GND
28
1
1
1
MA2
MB2
VMM2
1
1
16
24
6789
GND
1
1
1
1
MA1
MB1
1
1
13
5
12
17
TSD
Comparator
input (2)
C2
One-shot multi
time constant
T2
tOFF = 0.69 • RT • CT
Current sensor
E2
Current
sensor
C1
Comparator
input (1)
Mono-
stable
tOFF = 0.69 • RT • CT
Current sensor
One-shot multi
time constant (1)
T1
E1
Current
sensor (1)
Mono-
stable
Power
supply (2)
VCC2
Power
supply (1)
VCC1
VR2
Ph2
VR1
Ph1
VMM1
19
18
15
27
410
14
2
3
25
1
4
5
3
2
6
7
8
9
10
12
13
14
11
C1
VR1
VMM1
MA1
E1
MB1
VMM1
VCC1
T1
Ph1
GND
28
25
24
26
27
23
22
21
20
19
17
16
15
18
MB2
VMM2
VCC2
T2
Ph2
GND
C2
VR2
VMM2
MA2
E2
Comparator input (1)
Comparator reference
voltage input (1)
Output stage
supply voltage (1)
Output terminal (1)
Current sensor (1)
Output terminal (1)
Output current
direction switch
One-shot multi
time constant
Power supply (1)
Output stage
supply voltage (1)
Output terminal (2)
Output current
direction switch
One-shot multi
time constant
Power supply (2)
Output stage
supply voltage (2)
Comparator input (2)
Comparator reference
voltage input (2)
Output stage
supply voltage (2)
Output terminal (2)
Current sensor (2)


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