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Rohm Semiconductor Electronic Components Datasheet

BD63621MUV Datasheet

Stepping Motor Driver

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Datasheet
36V
Stepping Motor Driver
BD63621MUV
General Description
BD63621MUV is a bipolar low-consumption driver that
driven by PWM current. Rated power supply voltage of
the device is 36 V, and rated output current is 2.0 A.
CLK-IN driving mode is adopted for input interface, and
excitation mode is corresponding to FULL STEP mode ,
HALF STEP mode ( 2 kinds), QUARTER STEP mode
via a built-in DAC. In terms of current decay, the FAST
DECAY/SLOW DECAY ratio may be set without any
limitation, and all available modes may be controlled in
the most appropriate way. In addition, the power supply
may be driven by one single system, which simplifies
the design.
Features
Rated output currentDC2.0A
Low ON resistance DMOS output
CLK-IN drive mode
PWM constant current (other oscillation)
Built-in spike noise cancel function (external noise
filter is unnecessary)
Full -, half (2 kinds)-, quarter step functionality
Freely timing excitation mode switch
Current decay mode switch
linearly variable FAST/SLOW DECAY ratio
Normal rotation & reverse rotation switching
function
Power save function
Built-in logic input pull-down resistor
Power-on reset function
Thermal shutdown circuit (TSD)
Over-current protection circuitOCP
Under voltage lock out circuit (UVLO)
Over voltage lock out circuit (OVLO)
Ghost Supply Prevention (protects against
malfunction when power supply is disconnected)
Adjacent pins short protection
Microminiature, ultra-thin and high heat-radiation
(exposed metal type) package
Application
PPC, multi-function printer, laser beam printer, and
ink-jet printer
Monitoring camera and WEB camera
Sewing machine
Photo printer, FAX, scanner and mini printer
Toy and robot
Key Specifications
Range of power supply voltage
Rated output current (continuous)
Rated output current (peak value)
Range of operating temperature
Output ON resistance (total of
upper and lower resistors)
8 to 28 V
2.0 A
2.5 A
-25 to +85 °C
0.49 Ω (Typ)
Package
VQFN028V5050
W(Typ) x D(Typ)x H(Max)
5.00mm x 5.00mm x 1.00mm
VQFN028V5050
Typical Application Circuit
GND
1
GND
2
GND
6
CLK 5
MODE1 7
MODE0 8
CW_CCW 9
ENABLE 10
TEST 11
VREF 28
CR 26
SELECT 4
MTH 27
25 GND
3 PS
24 VCC1
23 OUT1A
19
OUT1B
20
RNF1
21 RNF1S
12 VCC2
13 OUT2A
17 OUT2B
16
RNF2
15 RNF2S
18 GND
Figure 1. Application circuit diagram
Product structuresilicon monolithic integrated circuit
www.rohm.com
© 2017 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
It is not the radiation-proof design for this product.
1/24
TSZ02201-0P2P0B701290-1-2
21.Dec.2020 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BD63621MUV Datasheet

Stepping Motor Driver

No Preview Available !

BD63621MUV
Pin Configuration
[TOP VIEW]
21 20 19 18 17 16 15
N.C. 22
OUT1A 23
VCC1 24
GND 25
CR 26
MTH 27
VREF 28
14 N.C.
13 OUT2A
12 VCC2
11 TEST
10 ENABLE
9 CW_CCW
8 MODE0
1234567
Figure 2. Pin Configuration Diagram
Block Diagram
GND 1
GND 2
GND 6
CLK 5
MODE1 7
MODE0 8
CW_CCW 9
ENABLE 10
TEST 11
VREF 28
Translator
DAC
RNF1S
RNF2S
Blank time
PWM control
CR 26
OSC
SELECT 41
MTH 217
Mix decay
control
TSD
OVLO
RESET
OCP
UVLO
25 GND
3 PS
Regulator
24 VCC1
OUT1A
23
19 OUT1B
20 RNF1
21 RNF1S
12 VCC2
13 OUT2A
17 OUT2B
16 RNF2
15 RNF2S
18 GND
Figure 3. Block Diagram
Pin Description
Pin No. Pin name
1
GND
Function
Ground terminal
Pin No.
15
2
GND
Ground terminal
16
3
PS
Power save terminal
17
4
SELECT Decay mode setting terminal
18
5
CLK
Clock input terminal for advancing the
electrical angle
19
6
GND
Ground terminal
20
7
MODE1 Motor excitation mode setting terminal
21
8
MODE0 Motor excitation mode setting terminal
22
9
CW_CCW Motor rotating direction setting terminal
23
10
ENABLE Output enable terminal
24
11
TEST
Terminal for testing
(Used by connecting with GND)
25
12
VCC2
Power supply terminal
26
13
OUT2A H bridge output terminal
27
14
N.C.
No Connection
28
Pin name
RNF2S
RNF2
OUT2B
Function
Input terminal of current limit
comparator
Connection terminal of resistor for
output current detection
H bridge output terminal
GND
Ground terminal
OUT1B
RNF1
RNF1S
N.C.
H bridge output terminal
Connection terminal of resistor for
output current detection
Input terminal of current limit
comparator
No Connection
OUT1A H bridge output terminal
VCC1
Power supply terminal
GND
CR
MTH
Ground terminal
Connection terminal of CR for setting
chopping frequency
Current decay mode setting terminal
VREF
Output current value setting terminal
www.rohm.com
© 2017 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/24
TSZ02201-0P2P0B701290-1-2
21.Dec.2020 Rev.002


Part Number BD63621MUV
Description Stepping Motor Driver
Maker ROHM
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BD63621MUV Datasheet PDF






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