ROHM BD6373GW

System Lens Driver Series for Digital Still Cameras / Single-lens Reflex Cameras
6ch System Lens Drivers
for Digital Still Cameras /
Single-lens Reflex Cameras
BD6373GW,BD6873KN,BD6753KV
No.09014EAT02
●Description
The BD6373GW motor driver provides 6 Full-ON Drive H-bridge channels. The BD6873KN motor driver provides 5 Full-ON
Drive H-bridge channels and 1 Linear Constant-Current Drive H-bridge channel, while the BD6753KV provides 4 Full-ON
Drive channels and 2 PWM Constant-Current Drive H-bridge channels.
Stepping motors can be used for auto focus, and either zoom or iris. A new drive type (lens barrier) is also available. Three types of drivers
for shutter are offered: a simple Full-ON type, a high-precision linear constant current type, or a high-efficiency PWM constant current type,
enabling selection of the ideal solution based on the application.
●Features
1) Subminiature 31PIN Wafer-level CSP (Chip Size Package): 2.6 x 2.6 x 0.85mm3 (BD6373GW)
2) DMOS output allowing a range power supply: 4.5V to 10.5V (BD6753KV; VM1), 2.0V to 10.5V (BD6753KV; VM2 to VM4)
3) Low ON-Resistance Power MOS output:
Full-ON Drive block with 1.2Ω Typ. (BD6373GW)
Full-ON Drive block with 1.2Ω Typ. and Linear Constant-Current Drive block with 1.0Ω Typ. (BD6873KN)
Full-ON Drive block with 1.2Ω Typ. and PWM Constant-Current Drive block with 1.2Ω Typ. (BD6753KV)
4) Serial interface 3-line bus control input (BD6753KV)
5) Built-in two-step output current setting switch for the Linear Constant-Current Drive block (BD6873KN)
6) Drive mode switching function
7) 1.2V±3% high-precision reference voltage output (BD6873KN)
8) Constant-Current Drive block features phase compensation capacitor-free design (BD6873KN)
9) Built-in ±3% high-precision Linear Constant-Current Driver (BD6873KN)
10) Built-in peak current control PWM Constant-Current Driver (BD6753KV)
11) Built-in charge pump circuit for the DMOS gate voltage drive (BD6753KV)
12) UVLO (Under Voltage Lockout Protection) function
13) Built-in TSD (Thermal Shut Down) circuit
14) Standby current consumption: 0μA Typ.
●Absolute Maximum Ratings
Parameter
Symbol
Power supply voltage
Motor power supply voltage
Charge pump voltage
Control input voltage
Power dissipation
Operating temperature range
Junction temperature
Storage temperature range
H-bridge output current
VCC
VM
VG
VIN
Pd
Topr
Tjmax
Tstg
Iout
BD6373GW
-0.5 to +6.5
-0.5 to +6.5
-0.5 to VCC+0.5
940※1
-25 to +85
+150
-55 to +150
-800 to +800※4
Limit
BD6873KN
0 to +7.0
0 to +7.0
0 to VCC
950※2
-25 to +85
+150
-55 to +150
-800 to +800※4
BD6753KV
-0.5 to +7.0
-0.5 to +12.5
18.0
-0.5 to VCC+0.5
1125※3
-25 to +75
+150
-55 to +150
-800 to +800※4
Unit
V
V
V
V
mW
°C
°C
°C
mA/ch
※1 Reduced by 7.52mW/°C over 25°C, when mounted on a glass epoxy board (50mm x 58mm x 1.75mm; 8layers).
※2 Reduced by 7.6mW/°C over 25°C, when mounted on a glass epoxy board (70mm x 70mm x 1.6mm).
※3 Reduced by 9.0mW/°C over 25°C, when mounted on a glass epoxy board (70mm x 70mm x 1.6mm).
※4 Must not exceed Pd, ASO, or Tjmax of 150°C.
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© 2009 ROHM Co., Ltd. All rights reserved.
1/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
●Operating Conditions (Ta=-25 to +85°C(BD6373GW, BD6873KN), -25 to +75°C(BD6753KV))
Limit
Parameter
Symbol
BD6373GW
BD6873KN
BD6753KV
Power supply voltage
VCC
2.5 to 5.5
2.5 to 5.5
2.7 to 5.5
4.5 to 10.5 (VM1)
Motor power supply voltage
VM
2.5 to 5.5
2.5 to 5.5
2.0 to 10.5 (VM2 to VM4)
Control input voltage
VIN
0 to VCC
0 to VCC
0 to VCC
Output current control input
VLIM
0 to VCC
0 to 0.5
voltage range
PWM signal input frequency
FPWM
0 to 0.1
H-bridge output current
Iout
-500 to +500※5
-500 to +500※5
-500 to +500※5
Unit
V
V
V
V
MHz
mA/ch
※5 Must not exceed Pd or ASO.
●Electrical Characteristics
1) BD6373GW Electrical Characteristics (Unless otherwise specified, Ta=25°C, VCC=3.0V, VM=5.0V)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Overall
Circuit current
ICC
1.0
1.9
mA no signal and no load
Control input (IN=ENABLExx, INPUTx, and BRAKEx)
High level input voltage
VINH
2.0
VCC
V
Low level input voltage
VINL
0
0.7
V
High level input current
IINH
15
30
60
μA VINH=3V
Low level input current
IINL
-1
0
μA VINL=0V
UVLO
UVLO voltage
VUVLO
1.6
2.4
V
Full-ON Drive block (ch1 to ch6)
Io=±400mA on high and low sides In total
Output ON-Resistance 1
RON1
1.2
1.5
Ω
(VM=5V)
Io=±400mA on high and low sides In total
Output ON-Resistance 2
RON2
1.5
2.0
Ω
(VM=3V)
Turn on time
ton
0.55
1.95
μs
RL=20Ω
Turn off time
toff
0.08
0.5
μs
RL=20Ω
Rise time
tr
0.1
0.15
1.0
μs
RL=20Ω
Fall time
tf
0.03
0.2
μs
RL=20Ω
2) BD6873KN Electrical Characteristics (Unless otherwise specified, Ta=25°C, VCC=3.0V, VM=5.0V)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Overall
Circuit current
ICCST
0
10
μA PS=0V
during standby operation
Circuit current
ICC
1.2
2.3
mA PS=VCC with no signal and no load
Power-saving (PS)
High level input voltage
VPSH
2.0
V
Low level input voltage
VPSL
0.7
V
High level input current
IPSH
15
30
60
μA VPS=3V
Low level input current
IPSL
-1
0
μA VPS=0V
Control input (IN=IN1A to IN5B, SEL1 to 3, BRK1, EN1, IN6, and VLIMS)
High level input voltage
VINH
2.0
V
Low level input voltage
VINL
0.7
V
High level input current
IINH
15
30
60
μA VINH=3V
Low level input current
IINL
-1
0
μA VINL=0V
Pull-down resistance
RIN
50
100
200
kΩ
UVLO
UVLO voltage
VUVLO
1.6
2.4
V
Full-ON Drive block (ch1 to ch5)
Output ON-Resistance
RON
1.2
1.5
Ω
Io=±400mA on high and low sides In total
Linear Constant-Current Drive block (ch6)
Output ON-Resistance
RON
1.0
1.25
Ω
Io=±400mA on high and low sides in total
VREF output voltage
VREF
1.16
1.20
1.24
V
Iout=0~1mA
Output limit voltage
VOL
194
200
206
mV RNF=0.5Ω, VLIM=0.2V
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© 2009 ROHM Co., Ltd. All rights reserved.
2/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
3) BD6753KV Electrical Characteristics (Unless otherwise specified, Ta=25°C, VCC=3.3V, VM=10.5V)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Overall
Circuit current
during standby operation
ICCST
-
0
10
μA
PS=0V
3.0
mA
PS=VCC with no signal; CRx open
0.7
100
-
V
V
μA
μA
VPSH=3.3V
VPSL=0V
0.7
66
200
V
V
μA
μA
kΩ
-
V
2.5
V
1.2
1.5
Ω
Io=±400mA, VG=16.5V
on high and low sides in total
Io=±400mA, VG=16.5V
on high and low sides in total
Circuit current
ICC
2.2
Power-saving (PS)
High-level input voltage
VPSH
2.0
Low-level input voltage
VPSL
High-level input current
IPSH
25
50
Low-level input current
IPSL
-1
0
Control input (IN=STROBE, CLK, DATA, and PWM1 to 6)
High-level input voltage
VINH
2.0
Low-level input voltage
VINL
High-level input current
IINH
16.5
33
Low-level input current
IINL
-1
0
Pull-down resistance
RIN
50
100
Charge pump
Charge pump voltage
VCP
16
16.5
UVLO
UVLO voltage
VUVLO
1.6
Full-ON Drive block (ch1 to ch4)
Output ON-Resistance
RON
-
VINH=3.3V
VINL=0V
PWM Linear Constant-Current Drive block (ch5 and ch6)
Output ON-Resistance
VLIM pin input current
SENSE pin input current
Output limit voltage
CR clamp voltage
CR switching high voltage
CR switching low voltage
Minimum ON time
Constant voltage power supply
VREF output voltage
RON
-
1.2
1.5
Ω
IVLIM
ISENSE
VOL
VCR
VCRH
VCRL
TMINON
-1
-1
485
0.8
0.72
0.36
0.1
-0.2
-0.2
500
0.9
0.80
0.40
0.5
515
1.0
0.88
0.44
1.0
μA
μA
mV
V
V
V
μs
VREF
0.81
0.90
0.99
V
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3/17
VLIMx=0V, SENSEx=0.5V
VLIMx=0.5V, SENSEx=0V
VLIMx=500mV
R=10kΩ
C=470pF, R=10kΩ
Iout=0~1mA
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
●Electrical Characteristic Diagrams
BD6373GW
750
489mW
250
750
250
85°C
0
0
25
50
75
494mW
500
125
150
0
Ambient temperature : Ta [°C]
(2.5V to 5.5V)
2.0
1.0
0.0
1.0
2.0
3.0
4.0
6.0
7.0
150
75°C
0
75
100
125
BD6753KV
5.0
(2.5V to 5.5V)
2.0
1.0
4.0
(2.7V to 5.5V)
3.0
2.0
Top 75°C
Mid 25°C
Low -25°C
1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Supply voltage : VCC [V]
Supply voltage : VCC [V]
Fig.4 Circuit current
Fig.5 Circuit current
Fig.6 Circuit current
4.0
Op. range
3.0
(2.5V to 5.5V)
2.0
1.0
BD6873KN
5.0
Top 85°C
Mid 25°C
Low -25°C
4.0
Op. range
3.0
(2.5V to 5.5V)
2.0
1.0
0.0
0.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0.0
2.0
1.0
4.0
Op. range
3.0
(2.5V to 5.5V)
2.0
1.0
5.0 6.0
7.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
Supply voltage : VM [V]
Fig.9 Output ON-Resistance
(Linear Constant-Current Drive
BD6873KN
250
RNF voltage : VRNF [mV]
3.0
0.0
13.0
3.0 4.0
Fig.8 Output ON-Resistance
(Full-ON Drive block)
BD6753KV
Top 75°C
Mid 25°C
Low -25°C
4.0
1.0 2.0
Supply voltage : VM [V]
Supply voltage : VM [V]
5.0
Top 85°C
Mid 25°C
Low -25°C
0.0
7.0
Fig.7 Output ON-Resistance
(Full-ON Drive block)
7.0
BD6873KN
5.0
Output ON resistance : RON [Ω]
BD6373GW
Top 85°C
Mid 25°C
Low -25°C
150
Op. range
Op. range
3.0
50
Fig.3 Power Dissipation Reduction
BD6873KN
4.0
25
Ambient temperature : Ta [°C]
Top 85°C
Mid 25°C
Low -25°C
0.0
Output ON resistance : RON [Ω]
Output ON resistance : RON [Ω]
5.0
250
Supply voltage : VCC [V]
5.0
Output ON resistance : RON [Ω]
125
0.0
0.0
500
0
100
5.0
Circuit current : ICC [mA]
Circuit current : ICC [mA]
Op. range
3.0
75
Fig.2 Power Dissipation Reduction
BD6373GW
Top 85°C
Mid 25°C
Low -25°C
4.0
50
675mW
750
Ambient temperature : Ta [°C]
Fig.1 Power Dissipation Reduction
5.0
25
1125mW
1000
85°C
0
100
Circuit current : ICC [mA]
500
950mW
1000
BD6753KV
1250
Power dissipation : Pd [mW]
940mW
1000
BD6873KN
1250
Power dissipation : Pd [mW]
Power dissipation : Pd [mW]
1250
200
150
100
Top 85°C
Mid 25°C
Low -25°C
50
0
14.0
15.0
16.0
17.0
18.0
Supply voltage : VG [V]
Fig.10 Output ON-Resistance
(VM=10.5V)
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© 2009 ROHM Co., Ltd. All rights reserved.
0
50
100
150
200
250
VLIM voltage : VLIM [mV]
Fig.11 Output limit voltage
(RNF=0.5Ω)
4/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
●Block Diagram, Pin Arrangement, and Pin Function
VCC
F3
TSD & UVLO
BandGap
1
2
3
4
5
6
A
OUT3A
VM34
OUT3B
OUT4A
PGND34
OUT4B
B
PGND12
OUT3A
INPUT3
INPUT4
OUT4B
PGND56
C
OUT2B
ENABLE12
INPUT5
OUT5A
F2 VM12
H bridge
ENABLE12 C2
L
Full ON
Logic12
INPUT1 D2
H bridge
INPUT2 E3
Full ON
E2 F1 OUT1A
E1 OUT1B
D1 OUT2A
C1 OUT2B
B1 PGND12
A2 VM34
H bridge
ENABLE34 D3
L
Full ON
Logic34
INPUT3 B3
H bridge
INPUT4 B4
Full ON
INDEX
POST
A1 B2 OUT3A
A3 OUT3B
D
OUT2A
INPUT1
ENABLE34
BRAKE5
BRAKE6
OUT5B
E
OUT1B
OUT1A
INPUT2
INPUT6
OUT6B
OUT6A
F
OUT1A
VM12
VCC
GND
VM56
OUT6B
A4 OUT4A
A6 B5 OUT4B
A5 PGND34
F5 VM56
H bridge
INPUT5 C5
L
BRAKE5 D4
INPUT6 E4
Full ON
H bridge
BRAKE6 D5
Full ON
C6 OUT5A
D6 OUT5B
E6 OUT6A
E5 F6 OUT6B
B6 PGND56
OUT3A, OUT4B, OUT1A, and OUT6B, which are 2
function pins, are shorted on printed circuit boards.
F4
GND
Fig.13 BD6373GW Pin Arrangement (Top View)
UCSP75M2 Package
Fig.12 BD6373GW Block Diagram
No.
A1
A2
A3
A4
A5
A6
B1
B2
B3
B4
B5
B6
C1
C2
C3
C4
C5
C6
Pin Name
OUT3A
VM34
OUT3B
OUT4A
PGND34
OUT4B
PGND12
OUT3A
INPUT3
INPUT4
OUT4B
PGND56
OUT2B
ENABLE12
INDEX POST
INPUT5
OUT5A
BD6373GW Pin Function Table
Function
No.
Pin Name
H-bridge output pin ch3 A
D1
OUT2A
Motor power supply pin ch3 and ch4
D2
INPUT1
H-bridge output pin ch3 B
D3 ENABLE34
H-bridge output pin ch4 A
D4
BRAKE5
Motor ground pin ch3 and ch4
D5
BRAKE6
H-bridge output pin ch4 B
D6
OUT5B
Motor ground pin ch1 and ch2
E1
OUT1B
H-bridge output pin ch3 A
E2
OUT1A
Control input pin ch3 INPUT
E3
INPUT2
Control input pin ch4 INPUT
E4
INPUT6
H-bridge output pin ch4 B
E5
OUT6B
Motor ground pin ch5 and ch6
E6
OUT6A
H-bridge output pin ch2 B
F1
OUT1A
Control input pin ch1 and ch2 ENABLE
F2
VM12
F3
VCC
F4
GND
Control input pin ch5
F5
VM56
H-bridge output pin ch5 A
F6
OUT6B
Function
H-bridge output pin ch2 A
Control input pin ch1 INPUT
Control input pin ch3 and ch4 ENABLE
Control input pin ch5 BRAKE
Control input pin ch6 BRAKE
H-bridge output pin ch5 B
H-bridge output pin ch1 B
H-bridge output pin ch1 A
Control input pin ch2 INPUT
Control input pin ch6 INPUT
H-bridge output pin ch6 B
H-bridge output pin ch6 A
H-bridge output pin ch1 A
Motor power supply pin ch1 and ch2
Power supply pin
Ground pin
Motor power supply pin ch5 and ch6
H-bridge output pin ch6 B
OUT3A, OUT4B, OUT1A, and OUT6B, which are 2 function pins, are shorted on printed circuit boards.
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5/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
VCC
6
PS 38
Power Save
TSD & UVLO
BandGap
41 VM1
H bridge
IN1A 47
Level Shift
IN1B 48
IN2A
1
IN2B
2
SEL1
3
Logic12
Full ON
&
Pre Driver
H bridge
Full ON
39 OUT1A
40 OUT1B
45 OUT2A
46 OUT2B
44 PGND1
17 VM2
N.C.
PGND1
33 PGND3
28 VM4
Level Shift
EN1 36
Logic6
H bridge
&
IN6 37
Const. Current
Pre Driver
VLIML
VLIMS
VM4
OUT2A
OUT3B
OUT2B
OUT3A
IN1A
BRK1
IN1B
SEL3
IN2A
48
N.C.
VM2
IN5B
35 OUT5B
BRK1 14
N.C.
BD6873KN
IN5A
Full ON
OUT6A
PGND2
SEL2
H bridge
&
Pre Driver
RNF
OUT4A
VM1
OUT4B
IN4B
Logic5
OUT6B
OUT1B
N.C.
SEL3 13
SENSE
OUT1A
32 OUT5A
24
VREF
20 PGND2
34 VM3
Level Shift
VLIMH
22 OUT4B
IN5A 11
IN5B 12
OUT5A
PS
IN4A
SEL2 10
IN6
21 OUT4A
GND
Full ON
VCC
H bridge
IN3B
Pre Driver
16 OUT3B
VM3
9
Full ON
&
PGND3
IN4B
Level Shift
Logic34
IN3A
8
SEL1
5
IN4A
36
15 OUT3A
EN1
IN3B
H bridge
OUT5B
4
IN2B
IN3A
12
27 OUT6A
31 OUT6B
29 RNF
VREF
Selector
23
VREF
26
VLIMS
24
30 SENSE
25
VLIMH
7
VLIML
GND
Fig.14 BD6873KN Block Diagram
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Pin name
IN2A
IN2B
SEL1
IN3A
IN3B
VCC
GND
IN4A
IN4B
SEL2
IN5A
IN5B
SEL3
BRK1
OUT3A
OUT3B
VM2
N.C.
N.C.
PGND2
OUT4A
OUT4B
VREF
VLIMH
Fig.15 BD6873KN Pin Arrangement (Top View)
UQFN48 Package
BD6873KN Pin Function Table
Function
No. Pin name
Control input pin ch2 A
25
VLIML
Control input pin ch2 B
26
VLIMS
Input mode selection pin ch1 and ch2
27
OUT6A
Control input pin ch3 A
28
VM4
Control input pin ch3 B
29
RNF
Power supply pin
30
SENSE
Ground pin
31
OUT6B
Control input pin ch4 A
32
OUT5A
Control input pin ch4 B
33
PGND3
Input mode selection pin ch3 and ch4
34
VM3
Control input pin ch5 A
35
OUT5B
Control input pin ch5 B
36
EN1
Input mode selection pin ch5
37
IN6
Control input pin ch5 BRAKE
38
PS
H-bridge output pin ch3 A
39
OUT1A
H-bridge output pin ch3 B
40
OUT1B
Motor power supply pin ch3 and ch4
41
VM1
42
N.C.
43
N.C.
Motor ground pin ch3 and ch4
44
PGND1
H-bridge output pin ch4 A
45
OUT2A
H-bridge output pin ch4 B
46
OUT2B
Reference voltage output pin
47
IN1A
Output current setting pin 1 ch6
48
IN1B
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6/17
Function
Output current setting pin 2 ch6
Output current selection pin ch6
H-bridge output pin ch6 A
Motor power supply pin ch6
Resistance connection pin for output current detection ch6
Output current detection pin ch6
H-bridge output pin ch6 B
H-bridge output pin ch5 A
Motor ground pin ch5
Motor power supply pin ch5
H-bridge output pin ch5 B
Control input pin ch6 ENABLE
Control input pin ch6 INPUT
Power-saving pin
H-bridge output pin ch1 A
H-bridge output pin ch1 B
Motor power supply pin ch1 and ch2
Motor ground pin ch1 and ch2
H-bridge output pin ch2 A
H-bridge output pin ch2 B
Control input pin ch1 A
Control input pin ch1 B
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
CP1
VCC
4
9
PS 28
CP2
CP3
5
OSC
Charge Pump
Power Save
TSD & UVLO
6
CP4
VG
7
8
Charge Pump
BandGap
44 45 VM1
VG
41 OUT1A
H bridge
PWM1 2
Level Shift
Logic12
PWM2 3
Full ON
43 OUT1B
&
Pre Driver
46 OUT2A
H bridge
Full ON
48 OUT2B
42 47 RNF1
16 17 VM2
20 OUT4B
H bridge
21 OUT5A
OUT1B
OUT4A
VM2
VM1
36 VM4
VM2
RNF1
39 RNF4
PWM4
PWM3
VCC
VG
CP4
OUT3A
CP3
40 OUT6B
STROBE 31
RNF2
OUT2B
CP2
48
CP1
H bridge
OUT3B
PWM2
37 OUT6A
VM3
PS
CR1
RNF2
BD6753KV
OUT2A
PWM C. Current
12
38 SENSE4
PWM LATCH
DATA 33
GND
OUT4B
RNF1
24 OUT5B
&
Serial
Interface
VREF
OUT1A
25 VM3
VM1
PWM C. Current
Pre Driver
CLK 32
OUT5A
PWM1
Logic45
Logic56
PWM6 1
RNF3
OUT6B
PWM5
VG
24
SENSE3
RNF4
14 19 RNF2
Level Shift
OUT5B
SENSE4
Full ON
PWM5 12
CLK
OUT6A
VLIM5
18 OUT4A
H bridge
STROBE
Pre Driver
CR2
15 OUT3B
&
DATA
Full ON
VM4
Level Shift
Logic34
PWM4 11
PWM6
PWM3 10
36
13 OUT3A
H bridge
VLIM6
VG
22 RNF3
30
GND
VREF
PWM LATCH
29
27
VREF
23 SENSE3
34
CR1
26
CR2
VREF
35
VLIM5
VLIM6
Fig.16 BD6753KV Block Diagram
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Pin name
PWM6
PWM1
PWM2
CP1
CP2
CP3
CP4
VG
VCC
PWM3
PWM4
PWM5
OUT3A
RNF2
OUT3B
VM2
VM2
OUT4A
RNF2
OUT4B
OUT5A
RNF3
SENSE3
OUT5B
Fig.17 BD6753KV Pin Arrangement (Top View)
VQFP8C Package
BD6753KV Pin Function Table
Function
No. Pin name
PWM control input pin ch6
25
VM3
PWM control input pin ch1
26
VLIM5
PWM control input pin ch2
27
CR1
Charge pump capacitor connection pin 1
28
PS
Charge pump capacitor connection pin 2
29
VREF
Charge pump capacitor connection pin 3
30
GND
Charge pump capacitor connection pin 4
31
STROBE
Charge pump output pin
32
CLK
Power supply pin
33
DATA
PWM control input pin ch3
34
CR2
PWM control input pin ch4
35
VLIM6
PWM control input pin ch5
36
VM4
H-bridge output pin ch3 A
37
OUT6A
Motor ground pin ch3 and ch4
38
SENSE4
H-bridge output pin ch3 B
39
RNF4
Motor power supply pin ch3 and ch4
40
OUT6B
Motor power supply pin ch3 and ch4
41
OUT1A
H-bridge output pin ch4 A
42
RNF1
Motor ground pin ch3 and 4
43
OUT1B
H-bridge output pin ch4 B
44
VM1
H-bridge output pin ch5 A
45
VM1
Resistance connection pin for output current detection ch5
46
OUT2A
Output current detection pin ch5
47
RNF1
H-bridge output pin ch5 B
48
OUT2B
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7/17
Function
Motor power supply pin ch5
Output current setting pin ch5
CR timer setting element connection pin ch5
Power-saving pin
Reference voltage output pin
Ground pin
Serial enable input pin
Serial clock input pin
Serial data input pin
CR timer setting element connection pin ch6
Output current setting pin ch6
Motor power supply pin ch6
H-bridge output pin ch6 A
Output current detection pin ch6
Resistance connection pin for output current detection ch6
H-bridge output pin ch6 B
H-bridge output pin ch1 A
Motor ground pin ch1 and ch2
H-bridge output pin ch1 B
Motor power supply pin ch1 and ch2
Motor power supply pin ch1 and ch2
H-bridge output pin ch2 A
Motor ground pin ch1 and ch2
H-bridge output pin ch2 B
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
●Application Circuit Diagram and Function Explanation
Bypass filter Capacitor for
power supply input. (p.14/16)
1～100uF
VCC
Bypass filter Capacitor for
power supply input. (p.14/16)
F3
TSD & UVLO
BandGap
Motor control input
(p.8/16)
1～100uF
F2
H bridge
ENABLE12 C2
Level Shift
Logic12
INPUT1 D2
&
Pre Driver
INPUT2 E3
Full ON
H bridge
Full ON
E2 F1
E1
D1
C1
B1
VM12
OUT1A
M
OUT1B
OUT2A
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT2B
PGND12
1～100uF
Motor control input
(p.8/16)
A2
H bridge
ENABLE34 D3
Level Shift
Logic34
INPUT3 B3
&
Pre Driver
INPUT4 B4
Full ON
H bridge
Full ON
Motor control input
(p.8/16)
A1 B2
A3
A4
A6 B5
A5
VM34
OUT3A
M
OUT3B
OUT4A
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT4B
PGND34
1～100uF
Motor control input
brake function (p.8/16)
H : Brake
Motor control input
(p.8/16)
F5
INPUT5 C5
Logic5
BRAKE5 D4
H bridge
Level Shift
Full ON
&
INPUT6 E4
Logic6
BRAKE6 D5
Pre Driver
H bridge
Full ON
Motor control input
brake function (p.8/16)
H : Brake
C6
D6
E6
E5 F6
B6
VM56
OUT5A
OUT5B
OUT6A
OUT6B
PGND56
F4
GND
Fig.18 BD6373GW Application Circuit Diagram
1) Power-saving function
When Low-level voltage is applied to PS pin, the IC will be turned off internally and the circuit current will be 0μA (Typ.).
During operating mode, PS pin should be High-level. (See the Electrical Characteristics; p.2/16)
2) Motor Control input
(1) ENABLExx and INPUTx pins (BD6373GW), INxA, INxB, EN1 and IN6 pins (BD6873KN), and PWMx pins (BD6753KV)
These pins are used to program and control the motor drive modes. (See the Electrical Characteristics; p.2/16 and
p.3/16 and I/O Truth Table; p.12/16 and p.13/16)
(2) SELx pins (BD6873KN)
When the Low-level voltage is applied to the SELx pins, the I/O logic can be set to EN/IN mode. However, when the
High-level voltage is applied, the I/O logic can be set to IN/IN mode. The same selection made with the BD6873KN's
SELx pin can be made for the BD6753KV, using serial control. (See the Electrical Characteristics; p.2/16 and p.3/16
and I/O Truth Table)
(3) BRAKEx pins (BD6373GW) and BRK1 pin (BD6873KN)
Applying the High-level voltage pin will set the brake mode. The same selection made with the brake mode can be
made for the BD6753KV, using serial control. (See the Electrical Characteristics; p.2/16 and p.3/16 and I/O Truth
Table; p.12/16 and p.13/16)
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8/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
Bypass filter Capacitor for
power supply input. (p.14/16)
1～100uF
Power-saving (p.8/16)
H : Active
L : Standby
VCC
Bypass filter Capacitor for
power supply input. (p.14/16)
6
PS 38
Power Save
TSD & UVLO
BandGap
Motor control input
(p.8/16)
H bridge
IN1A 47
IN1B 48
Level Shift
Logic12
Full ON
&
IN2A 1
Drive mode selection
(p.8/16)
H : EN/IN
L : IN/IN
1～100uF
41
Pre Driver
H bridge
IN2B 2
Full ON
SEL1 3
39
40
45
46
44
VM1
OUT1A
OUT1B
M
OUT2A
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT2B
PGND1
1～100uF
Motor control input
(p.8/16)
17
H bridge
IN3A 4
IN3B 5
Drive mode selection
(p.8/16)
H : EN/IN
L : IN/IN
Level Shift
Logic34
Full ON
&
IN4A 8
Pre Driver
H bridge
IN4B 9
Full ON
SEL2 10
15
16
21
22
20
Motor control input
(p.8/16)
VM2
OUT3A
OUT3B
M
OUT4A
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT4B
PGND2
1～100uF
34
Drive mode selection
(p.8/16)
H : EN/IN
L : IN/IN
VM3
IN5A 11
IN5B 12
Level Shift
Logic5
H bridge
&
SEL3 13
Full ON
Pre Driver
32
35
BRK1 14
33
Motor control input
brake function (p.8/16)
H : Brake
OUT5A
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT5B
PGND3
1～100uF
28
VM4
EN1 36
Level Shift
Logic6
Const. Current
Pre Driver
Motor control input
(p.8/16)
31
29
VREF
Selector
23
VREF
When using the VREF voltage (1.2V) resistance division
value as VLIMH and VLIML input value, select R1, R2, and R3
values such that,
2kΩ≦R1+R2+R3≦20kΩ (p.9/16)
H bridge
&
IN6 37
27
26
VLIMS
24
30
25
OUT6B
RNF
0.1Ω~5.0Ω
SENSE
7
VLIMH
VLIML
R2
R3
R1
OUT6A
GND
The output current is converted to a voltage with
the RNF external resistor and transmitted to the
SENSE pin. (p.10/16)
Iout[A] = (VLIMH or VLIML[V])÷RNF[Ω]
Output current selection
(p.10/16)
H : VLIML
L : VLIMH
Fig.19 BD6873KN Application Circuit Diagram
3) H-bridge
The 6-channel H-bridges of can be controlled independently. For this reason, it is possible to drive the H-bridges
simultaneously, as long as the package thermal tolerances are not exceeded.
The H-bridge output transistors of the BD6373GW, BD6873KN and BD6753KV consist of Power CMOS, with the motor
power supply VM, and Power DMOS, with the charge pump step-up power supply VG, respectively. The total H-bridge
ON-Resistance on the high and low sides varies with the VM and VG voltages, respectively. The system must be
designed so that the maximum H-bridge current for each channel is 800mA or below.
4) Drive system of Linear Constant-Current H-bridge (BD6873KN: ch6)
BD6873KN (ch6) enables Linear Constant-Current Driving.
(1) Reference voltage output (with a tolerance of ±3%)
The VREF pin outputs 1.2V, based on the internal reference voltage. The output current of the Constant-Current Drive
block is controllable by connecting external resistance to the VREF pin of the IC and applying a voltage divided by the
resistor to the output current setting pins (VLIMH and VLIML pins). It is recommended to set the external resistance to
2kΩ or above in consideration of the current capacity of the VREF pin, and 20kΩ or below in order to minimize the
fluctuation of the set value caused by the base current of the internal transistor of the IC.
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9/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
Connecting 0.01μF to 0.1μF capacitors between the CP1 and CP2, CP3
and CP4, and VG and GND pins generate a VG voltage of approximately
VM1 + (VCC  2). Use caution to ensure that the voltage differential between
VG and VM is 4.5V or higher, and that the VG voltage does not exceed the
absolute maximum rating of 18V, especially BST voltage direct input.
(p.12/16)
Bypass filter Capacitor for
power supply input. (p.14/16)
0.1μF
0.1μF
0.1μF
1～100uF
CP1
VCC
Power-saving (p.8/16)
H : Active
L : Standby
Motor control input
(p.8/16)
PS 28
CP2
4
9
CP3
5
6
OSC
Charge Pump
Power Save
TSD & UVLO
CP4
VG
7
8
Charge Pump
Bypass filter Capacitor for
power supply input. (p.14/16)
BandGap
1～100uF
44 45
VG
41
H bridge
PWM1 2
L
Full ON
43
Logic12
PWM2 3
46
H bridge
Full ON
48
42 47
VM1
OUT1A
OUT1B
M
OUT2A
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT2B
RNF1
Motor control input
(p.8/16)
1～100uF
16 17
VG
13
H bridge
PWM3 10
L
Full ON
15
Logic34
PWM4 11
18
H bridge
Full ON
20
14 19
Motor control input
(p.8/16)
VM2
OUT3A
OUT3B
M
OUT4A
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT4B
RNF2
1～100uF
25
VG
21
H bridge
PWM5 12
L
PWM C. Current
24
Logic45
Logic56
PWM6 1
VM3
Bypass filter Capacitor for
power supply input. (p.14/16)
OUT5A
OUT5B
1～100uF
36
Serial control input
(p.12/16)
37
H bridge
PWM C. Current
40
STROBE 31
39
Serial
Interface
CLK 32
38
PWM LATCH
DATA 33
22
30
VREF
PWM LATCH
29
27
GND
VREF
23
34
CR1
CCR1
26
CR2
RCR1 CCR2
This CR timer determines the
off time for the PWM drive.
5kΩ≦RCR1≦50kΩ
10pF≦CCR1≦2200pF
(p.11/16)
RCR2
35
VREF
VLIM5
VLIM6
R1
R2
R3
This CR timer determines the
off time for the PWM drive.
5kΩ≦RCR2≦50kΩ
10pF≦CCR2≦2200pF
(p.11/16)
VM4
OUT6A
OUT6B
RNF4
The output current is converted
to a voltage with the RNF4
external resistor and transmitted
to the SENSE4 pin. (p.11/16)
Iout[A] = VLIM6[V]÷RNF4[Ω]
0.1Ω~5.0Ω
SENSE4
RNF3
0.1Ω~5.0Ω
SENSE3
The output current is converted
to a voltage with the RNF3
external resistor and transmitted
to the SENSE3 pin. (p.11/16)
Iout[A] = VLIM5[V]÷RNF3[Ω]
When using the VREF voltage (0.9V) resistance division
value as VLIM5 and VLIM6 input value, select R1, R2, and R3
values such that,
1kΩ≦R1+R2+R3≦20kΩ (p.11/16)
Fig.20 BD6753KV Application Circuit Diagram
(2) Output current settings and setting changes
When the Low-level control voltage is applied to the VLIMS pin, the value on the VLIMH pin will be used as an output current
set value to control the output current. When the High-level control voltage is applied to the VLIMS pin, the value on the VLIML
pin will be used as an output current set value to control the output current. (See the Electrical Characteristics; P.2/16)
(3) Output current detection and current settings
By connecting external resistor (0.1Ω to 5.0Ω) to the RNF pin of the IC, the motor drive current will be converted into voltage in
order to be detected. The output current is kept constant by shorting the RNF and SENSE pins and comparing the voltage with
the VLIMH or VLIML voltage. To perform output current settings more precisely, trim the external RNF resistance if needed, and
supply a precise voltage externally to the VLIMH or VLIML pin of the IC. In that case, open the VREF pin.
Output current value Iout[A] =
VLIMH[V]
or
VLIML[V]
RNF[Ω]
Select VLIMH when VLIMS is Low-level
･･････(1)
Select VLIML when VLIMS is High-level
The output current is 400mA3% if 0.2V is applied to the VLIMH or VLIML pin and a 0.5Ω resistor is connected externally to
the RNF pin.
If the VLIMH and VLIML pins are shorted to the VCC pin (or the same voltage level as the VCC is applied) and the SENSE and
RNF pins are shorted to the ground, this channel can be used as a Full-ON Drive H-bridge like the other five channels.
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10/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
5) Drive system of PWM Constant-Current H-bridge (BD6753KV: ch5 and ch6)
BD6753KV (ch5 and ch6) enable peak current control PWM Constant-Current Driving.
(1) Output current detection and current settings
By connecting external resistance (0.1Ω to 5.0Ω) to the RNF3 and RNF4 pins of the IC, the motor drive current will be
converted into voltage in order to be detected. The output current is kept constant by shorting the RNF3 and RNF4 pins with
the SENSE3 and SENSE4 pins, respectively, and comparing the voltage to the set voltage input from outside the IC to the
VLIM5 and VLIM6 pins. As with the BD6873KN, the reference voltage generated inside the IC (VREF pin: 0.9V±10%) can
be divided using external resistors (from 1kΩ to 20kΩ). The resulting value can be input as the set voltage.
It is also necessary to connect a resistor and capacitor to the CR1 and CR2 pins, to determine the PWM drive off time.
(2) PWM Constant-Current control operation
When the output current in output ON mode increases, and the RNF3 or RNF4 voltage reaches the value set with the
VLIM5 or VLIM6 voltage, the internal current limiting comparator operates to set the IC to short mode. This caused the
current to be attenuated so that the H-bridge's low-side DMOS is ON. Once the off time (Toff) ends, as measured by
the CR timer, the IC returns to output ON mode. By repeating this cycle, the IC maintains a fixed current due to the
motor's inductance characteristics.
(3) Noise cancellation function
In order to avoid false detections by the current limiting comparator (caused by spike noise generated when output is
turned on), the IC uses the noise cancellation time (Tn) to disable current detection. This begins from the time output
turns on, until the noise cancellation time elapses. The noise cancellation time represents the minimum on time, and is
determined by the CR pin's internal resistor, external resistor, and capacitor.
(4) CR timer
When output turns on, the CR pin is clamped at approximately 0.9V. When the mode changes to short mode, it
discharges to approximately 0.4V. The interval over which this 0.5V voltage differential is discharged, is determined by
the off time (Toff). Once the CR pin voltage reaches 0.4V, the pin begins to charge as the output turns on, until it
reaches 0.9V. The interval over which the pin charges from 0.4V to approximately 0.8V is given by the noise
cancellation time (Tn). Toff and Tn are determined by the external resistor and capacitor connected to the CR pin.
A low resistance value to the CR pin will prevent it from reaching the clamp voltage. Therefore a resistor from 5 kΩ to
50kΩ should be used. Capacitors should be from 10pF to 2200pF. The use of a capacitance in excess of 2200pF will
lengthen the noise cancellation time and may cause the output current to exceed the set current. Setting a longer off
time may increase the output current ripple, reducing both the average current and the motor's rotational efficiency.
Output current value Iout[A]
=
VLIM5[V]
or
RNF3[Ω]
VLIM6[V]
･･････(2)
RNF4[Ω]
PWM Constant-Current
setting value
Output current: Iout[A]
Spike noise
0A
VLIM pin setting voltage
RNF voltage: VRNF[V]
0V
0.9V
0.8V
CR voltage: VCR[V]
Discharge period
Noise cancellation time: Tn[sec]
0.4V
Off time: Toff[sec]
Charge period
Fig.21 BD6753KV Peak Current Control PWM Constant-Current Drive Using the CR Timer
If the VLIM5 or VLIM6 is shorted to the VCC pin (or the same voltage level as the VCC is applied) and the SENSE3 or
SENSE4 and RNF3 or RNF4 pins are shorted to the ground, this channel can be used as a Full-ON Drive H-bridge
like the other four channels.
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11/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
6) Charge pump (BD6753KV)
Each output H-bridge of the BD6753KV on the high and low sides consists of Nch DMOS. Therefore, the gate voltage VG
should be higher than the VM voltage to drive the Nch DMOS on the high side.The BD6753KV has a built-in charge
pump circuit that generates VG voltage by connecting an external capacitor (0.01μF to 0.1μF).
If a 0.1μF capacitor is connected between: CP1 and CP2, CP3 and CP4, VG and GND
Then, VG pin output voltage will be:
VM1 + (VCC  2)
If a 0.1μF capacitor is connected between:
CP1 and CP2, VG and GND
CP4 and VG pins are shorted, and CP3 pin is open
Then, VG pin output voltage will be:
VM1 + VCC
The VM1 to VM4 respectively can be set to voltages different to one another. In order to ensure better performance, the
voltage differential between VG and VM must be 4.5V or higher, and the VG voltage must not exceed the absolute
maximum rating of 18V.
7) Serial interface (BD6753KV)
The BD6753KV provides an 8-bit, 3-line serial interface for setting output modes. DATA is sent to the internal shift register
during the STROBE low interval at the CLK rising edge. Shift register data is written to the IC's internal 6-bit memory at
the STROBE rising edge, according to the addresses stored in Bit[7] and Bit[6]. The serial data input order is Bit[0] to
Bit[7]. Serial settings are reset when the PS pin changes to Low-level control voltage, triggering standby mode. Serial
settings are also reset when the UVLO circuit operates.
No.
00H
01H
02H
BD6753KV Serial Resistor Bit Map
DATA BIT
Bit[5]
Bit[4]
Bit[3]
Bit[2]
mod2
mod1
p2a
p2b
mod4
mod3
p4a
p4b
mod6
mod5
p6a
p6b
ADDRESS BIT
Bit[7]
Bit[6]
0
0
0
1
1
0
Bit[1]
p1a
p3a
p5a
Bit[0]
p1b
p3b
p5b
100%
Timing of input serial data
writing to internal register
STROBE
Timing of register data writing to
internal memory
0%
100%
CLK
0%
100%
DATA
Bit[0]
Bit[1]
Bit[2]
Bit[3]
Bit[4]
Bit[5]
Bit[6]
Bit[7]
Bit[0]
Bit[1]
Bit[5]
Bit[6]
Bit[7]
0%
DATA BITS
ADDRESS BITS
DATA BITS
ADDRESS BITS
Fig.22 BD6753KV Sequence of Serial Control Input
●I/O Truth Table
BD6373GW Full-ON Driver ch1 to ch2 I/O Truth Table
INPUT
OUTPUT
Drive mode
ENABLE12
INPUTx
OUTxA
OUTxB
H
X
Z
Z
EN/IN
L
L
H
L
L
H
L
H
BD6373GW Full-ON Driver ch3 to ch4 I/O Truth Table
INPUT
OUTPUT
Drive mode
ENABLE34
INPUTx
OUTxA
OUTxB
H
X
Z
Z
EN/IN
L
L
H
L
L
H
L
H
BD6373GW Full-ON Driver ch5 to ch6 I/O Truth Table
INPUT
OUTPUT
Drive mode
INPUTx
BRAKEx
OUTxA
OUTxB
L
L
H
L
IN/IN
H
L
L
H
X
H
L
L
Output mode
Standby
CW
CCW
Output mode
Standby
CW
CCW
Output mode
CW
CCW
Brake
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
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12/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
BD6873KN Full-ON Driver ch1 to ch4 I/O Truth Table
INPUT
Drive mode
SELx
INxA
INxB
H
X
EN/IN
L
L
L
L
H
L
L
H
L
IN/IN
H
L
H
H
H
OUTPUT
OUTxA
OUTxB
Z
Z
H
L
L
H
Z
Z
H
L
L
H
L
L
Output mode
Standby
CW
CCW
Standby
CW
CCW
Brake
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
BD6873KN Full-ON Driver ch5 I/O Truth Table
INPUT
Drive mode
SEL3
IN5A
IN5B
BRK1
H
X
X
L
L
L
EN/IN
L
L
H
L
L
X
H
L
L
X
H
L
X
IN/IN
H
L
H
X
H
H
X
OUTPUT
OUT5A
OUT5B
Z
Z
H
L
L
H
L
L
Z
Z
H
L
L
H
L
L
Output mode
Standby
CW
CCW
Brake
Standby
CW
CCW
Brake
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
BD6873KN Linear Constant-Current Driver ch6 I/O Truth Table
INPUT
OUTPUT
Drive mode
EN1
IN6
OUT6A
OUT6B
H
X
Z
Z
EN/IN
L
L
H
L
L
H
L
H
Output mode
Standby
CW
CCW
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
BD6753KV ch1 to ch6 I/O Truth Table
INPUT
Serial data
Drive mode
modx
pxa
pxa
L
L
L
H
L
H
IN/IN
L
H
L
H
L
H
H
L
X
H
L
EN/IN
H
H
L
H
H
Terminal
PWMx
X
L
H
L
H
X
X
L
H
X
OUTPUT
OUTxA
Z
L
L
H
L
L
Z
H
L
L
OUTxB
Z
H
L
L
L
L
Z
L
H
L
Output mode
Standby
CCW
Brake
CW
Brake
Brake
Standby
CW
CCW
Brake
L: Low, H: High, X: Don't care, Z: High impedance
At CW, current flows from OUTA to OUTB. At CCW, current flows from OUTB to OUTA.
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© 2009 ROHM Co., Ltd. All rights reserved.
13/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
●I/O Circuit Diagram
ENABLExx, INPUTx, BRAKEx
VCC
VMx, OUTxA, OUTxB, PGNDx
VMx
VCC
140kΩ
10kΩ
OUTxA
OUTxB
100kΩ
PGNDx
Fig.23 BD6373GW I/O Circuit Diagram (Resistance values are typical ones)
PS, INxA, INxB, EN1, IN6, VLIMS
VCC
VMx, OUTxA, OUTxB, PGNDx, RNF
VMx
VCC
10kΩ
VLIMH, VLIML, SENSE
VREF
VCC
VCC
VCC
10kΩ
OUTxA
OUTxB
100kΩ
200kΩ
PGNDx
RNF
Fig.24 BD6873KN I/O Circuit Diagram (Resistance values are typical ones)
PS
STROBE, CLK, DATA, PWMx
VCC
VCC
VMx, OUTxA, OUTxB, RNFx
VMx
VCC
10kΩ
40kΩ
VCC
VCC
OUTxA
OUTxB
VCC
100kΩ
70kΩ
CPH1, CPL1
100kΩ
RNFx
VLIMx, SENSEx
CP3, CP1
VCC
VCC
VG, CP4, CP2
CR1, CR2
VG
VCC
VCC
VCC
5kΩ
1kΩ
CP4
CP2
VM1
Fig.25 BD6753KV I/O Circuit Diagram (Resistance values are typical ones)
●Operation Notes
1) Absolute maximum ratings
Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in
IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is
suffered. The implementation of a physical safety measure such as a fuse should be considered when use of the IC in a
special mode where the absolute maximum ratings may be exceeded is anticipated.
2) Storage temperature range
As long as the IC is kept within this range, there should be no problems in the IC’s performance. Conversely, extreme
temperature changes may result in poor IC performance, even if the changes are within the above range.
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© 2009 ROHM Co., Ltd. All rights reserved.
14/17
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
3) Power supply pins and lines
None of the VM line for the H-bridges is internally connected to the VCC power supply line, which is only for the control
logic or analog circuit. Therefore, the VM and VCC lines can be driven at different voltages. Although these lines can be
connected to a common power supply, do not open the power supply pin but connect it to the power supply externally.
Regenerated current may flow as a result of the motor's back electromotive force. Insert capacitors between the power
supply and ground pins to serve as a route for regenerated current. Determine the capacitance in full consideration of all
the characteristics of the electrolytic capacitor, because the electrolytic capacitor may loose some capacitance at low
temperatures. If the connected power supply does not have sufficient current absorption capacity, regenerative current will
cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed
the absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a
voltage clamp diode between the power supply and ground pins.
For this IC with several power supplies and a part consists of the CMOS block, it is possible that rush current may flow
instantaneously due to the internal powering sequence and delays, and to the unstable internal logic, respectively. Therefore,
give special consideration to power coupling capacitance, width of power and ground wirings, and routing of wiring.
4) Ground pins and lines
Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND at
any time, regardless of whether it is a transient signal or not.
When using both small signal GND and large current MGND patterns, it is recommended to isolate the two ground patterns,
placing a single ground point at the application's reference point so that the pattern wiring resistance and voltage variations
caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change the GND
wiring pattern of any external components, either.
The power supply and ground lines must be as short and thick as possible to reduce line impedance.
5) Thermal design
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.
6) Pin short and wrong direction assembly of the device
Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any
connection error or if positive and ground power supply terminals are reversed. The IC may also be damaged if pins are
shorted together or are shorted to other circuit’s power lines.
7) Actions in strong magnetic field
Use caution when using the IC in the presence of a strong magnetic field as doing so may cause the IC to malfunction.
8) ASO
When using the IC, set the output transistor for the motor so that it does not exceed absolute maximum ratings or ASO.
9) Thermal shutdown circuit
If the junction temperature (Tjmax) reaches 175°C, the TSD circuit will operate, and the coil output circuit of the motor will
open. There is a temperature hysteresis of approximately 25°C (BD6373GW and BD6873KN Typ.) and 25°C (BD6753KV
Typ.). The TSD circuit is designed only to shut off the IC in order to prevent runaway thermal operation. It is not designed to
protect the IC or guarantee its operation. The performance of the IC’s characteristics is not guaranteed and it is
recommended that the device is replaced after the TSD is activated.
10) Serial data input
In the BD6753KV, DATA input string start with LSB first.
The serial settings are reset during standby mode operation and whenever the UVLO or TSD circuits are operating.
11) Power saving terminal
Be cancelled power saving mode after turned on power supply VCC and VM, because of PS terminal combines power
saving with serial reset function. If the case of power saving terminal always shorted power supply terminal, reset function
may not be well, and it may cause the IC to malfunction.
12) Testing on application board
When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress.
Always discharge capacitors after each process or step. Always turn the IC's power supply off before connecting it to, or
removing it from a jig or fixture, during the inspection process. Ground the IC during assembly steps as an antistatic
measure. Use similar precaution when transporting and storing the IC.
13) Application example
The application circuit is recommended for use. Make sure to confirm the adequacy of the characteristics. When using the
circuit with changes to the external circuit constants, make sure to leave an adequate margin for external components
including static and transitional characteristics as well as dispersion of the IC.
14) Regarding input pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements to keep them isolated. P-N
junctions are formed at the intersection of these P layers with the N layers of other elements, creating a parasitic diode or
transistor. For example, the relation between each potential is as follows:
When GND > Pin A, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic diode and transistor.
Parasitic elements can occur inevitably in the structure of the IC. The operation of parasitic elements can result in mutual
interference among circuits, operational faults, or physical damage. Accordingly, methods by which parasitic elements
operate, such as applying a voltage that is lower than the GND (P substrate) voltage to an input pin, should not be used.
Resistor
Pin A
Pin B
C
Transistor (NPN)
B
E
Pin A
N
P+
N
P+
P
N
N
Parasitic
element
P+
B
N
GND
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C
N
E
Parasitic
element
P substrate
Parasitic element
GND
Fig.26 Example of Simple IC Architecture
© 2009 ROHM Co., Ltd. All rights reserved.
P+
P
P substrate
Parasitic element
Pin B
15/17
GND
Other adjacent
elements
GND
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
●Ordering part number
B
D
6
Part No.
3
7
3
G
Part No.
6373 : F.ON 6ch
6873 : F.ON 5ch+C.C. 1ch
6753 : F.ON 4ch+PWM 2ch
W
-
E
Package
GW : UCSP75M2
KN : UQFN48
KV : VQFP48C
2
Packaging and forming specification
E2: Embossed tape and reel
(UCSP75M2/ UQFN48))
None: Tray
(VQFP48C)
UCSP75M2 (BD6373GW)
<Tape and Reel information>
Tape
Embossed carrier tape
Quantity
3000pcs
Direction
of feed
E2
The direction is the 1pin of product is at the upper left when you hold
( reel on the left hand and you pull out the tape on the right hand
1pin
(Unit:mm)
Reel
)
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
UQFN48
7.0±0.1
7.2±0.1
<Tape and Reel information>
7.2 ± 0.1
7.0 ± 0.1
36
Tape
Embossed carrier tape (with dry pack)
24
Quantity
2500pcs
13
Direction
of feed
25
37
48
1
12
0.2 ± 0.05
0.22±0.05
+0.03
0.02 -0.02
0.05
+0.1
0.6 -0.3
0.05
M
E2
The direction is the 1pin of product is at the upper left when you hold
( reel on the left hand and you pull out the tape on the right hand
)
0.95MAX
(1.4)
5)
.5
(0
(0
.2
)
5)
.4
(0
3-
0.4
Notice :
Do not use the dotted line area
for soldering
(Unit : mm)
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© 2009 ROHM Co., Ltd. All rights reserved.
1pin
Reel
16/17
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2009.06 - Rev.A
Technical Note
BD6373GW, BD6873KN, BD6753KV
VQFP48C
<Tape and Reel information>
9.0 ± 0.2
7.0 ± 0.1
37
24
48
13
1PIN MARK
Container
Tray
Quantity
1000pcs
Direction of feed
Direction of product is fixed in a tray
1pin
+0.05
0.145 -0.03
1.6MAX
0.75
12
0.5±0.15
0.75
1
1.0±0.2
25
7.0±0.1
9.0±0.2
36
0.1±0.05
1.4±0.05
4 +6
-4
0.5 ± 0.1
0.08 S
+0.05
0.22 -0.04
0.08
M
∗ Order quantity needs to be multiple of the minimum quantity.
(Unit : mm)
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© 2009 ROHM Co., Ltd. All rights reserved.
17/17
2009.06 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,
fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of
any of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
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http://www.rohm.com/contact/
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R0039A