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PDF BD6757KN Data sheet ( Hoja de datos )
| Número de pieza | BD6757KN | |
| Descripción | 7ch System Lens Drivers | |
| Fabricantes | ROHM Semiconductor | |
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SystemLensDriverSeriesforDigitalStillCameras/Single-lensReflexCameras
7ch System Lens Drivers for
DigitalStillCameras/Single-lensReflexCameras
BD6757KN, BD6889GU
No.09014EAT04
●Description
BD6757KN and BD6889GU motor drivers provide 6 Full-ON Drive H-bridge channels and 1 Linear Constant-Current Drive
H-bridge channel. Stepping motors can be used for the auto focus, zoom, and iris, making it possible to configure a
sophisticated, high precision lens drive system. ROHM’s motor drivers are both compact, multifunctional, and enable
advanced features such as lens barrier and anti shock.
●Features
1) Subminiature grid array package: 5.0 5.0 1.2mm3 (BD6889GU)
2) DMOS output allowing a range power supply: 2.0V to 8.0V (BD6757KN)
3) Low ON-Resistance Power MOS output:
Full-ON Drive block with 1.3Ω Typ. and Linear Constant-Current Drive block with 0.9Ω Typ. (BD6757KN, BD6889GU)
4) Built-in two digital NPN transistor circuits for photo-interrupter waveform shaping:
Input-dividing type with output pull-up resistance (BD6757KN)
5) Built-in four digital NPN transistor circuits for photo-interrupter waveform shaping:
Input-dividing type with output pull-up resistance (BD6889GU)
6) Built-in four digital PNP transistor circuits for photo-interrupter waveform shaping:
Input-dividing type with output pull-down resistance (BD6889GU)
7) Built-in voltage-regulator circuit for photo-interrupter (BD6889GU)
8) Built-in two-step output current setting switch for the Linear Constant-Current Drive block (BD6757KN)
9) 0.9V±2% high-precision reference voltage output
10) Constant-Current Drive block features phase compensation capacitor-free design
11) Built-in ±3% high-precision Linear Constant-Current Driver
12) Built-in charge pump circuit for the DMOS gate voltage drive(BD6757KN)
13) UVLO (Under Voltage Lockout Protection) function
14) Built-in TSD (Thermal Shut Down) circuit
15) Standby current consumption: 0μA (Typ.)
●Absolute Maximum Ratings
Parameter
Symbol
Limit
BD6757KN
BD6889GU
Power supply voltage
VCC
-0.5 to +7.0
-0.5 to +7.0
Motor power supply voltage
VM -0.5 to +10.0
-0.5 to +7.0
Charge pump voltage
VG 15.0
None
Control input voltage
Power dissipation
VIN -0.5 to VCC+0.5 -0.5 to VCC+0.5
Pd 950※1
980※2
Operating temperature range
Topr -25 to +75
-25 to +85
Junction temperature
Tjmax
+150
+150
Storage temperature range
H-bridge output current
Tstg -55 to +150
-55 to +150
Iout
-800 to +800※3
-800 to +800※3
※1 Reduced by 7.6mW/°C over 25°C, when mounted on a glass epoxy board (70mm 70mm 1.6mm).
※2 Reduced by 7.84mW/°C over 25°C, when mounted on a glass epoxy board (70mm 70mm 1.6mm).
※3 Must not exceed Pd, ASO, or Tjmax of 150°C.
Unit
V
V
V
V
mW
°C
°C
°C
mA/ch
●Operating Conditions (Ta=-25 to +75°C(BD6757KN), -25 to +85°C(BD6889GU))
Parameter
Symbol
Limit
BD6757KN
BD6889GU
Power supply voltage
VCC
2.5 to 5.5
2.5 to 5.7
Motor power supply voltage
VM 2.5 to 8.0
2.5 to 5.7
Control input voltage
H-bridge output current
VIN 0 to VCC
0 to VCC
Iout
-500 to +500※4
-500 to +500※4
※4 Must not exceed Pd or ASO.
Unit
V
V
V
mA/ch
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/15
2009.06 - Rev.A
1 page  
BD6757KN, BD6889GU
●Pin arrangement and Pin Function
39
SI1
SI2
OUT5A
OUT5B
PGND2
OUT6A
OUT6B
OUT7A
RNF
OUT7B
SENSE
SO2
52 SO1
BD6757KN
IN1B
IN1A
OUT4A
OUT4B
OUT3A
OUT3B
PGND1
OUT2B
OUT2A
OUT1B
OUT1A
IN5A
IN5B
26
13
Technical Note
Fig.10 BD6757KN Pin Arrangement (Top View)
UQFN52 Package
BD6757KN Pin Function Table
No. Pin Name
Function
No. Pin Name
Function
1 IN7B
Control input pin ch7 B
27 IN2A
Control input pin ch2 A
2 VM4
Motor power supply pin ch7
28 IN2B
Control input pin ch2 B
3 IN7A
Control input pin ch7 A
29 IN3A
Control input pin ch3 A
4 GND
Ground Pin
30 VM2
Motor power supply pin ch3 and ch4
5 VREF Reference voltage output pin
31 CP1
Charge pump capacitor connection pin 1
6 VLIMH Output current setting pin 1 ch7
32 CP2
Charge pump capacitor connection pin 2
7 VLIML Output current setting pin 2 ch7
33 CP3
Charge pump capacitor connection pin 3
8 LIMSW Output current setting selection pin ch7 34 CP4
Charge pump capacitor connection pin 4
9 VCC
Power supply pin
35 VG
Charge pump output pin
10 VM1
Motor power supply pin ch1 and ch2
36 VM3
Motor power supply pin ch5 and ch6
11 PS
Power-saving pin
37 IN3B
Control input pin ch3 B
12 IN6B
Control input pin ch6 B
38 IN4A
Control input pin ch4 A
13 IN6A
Control input pin ch6 A
39 IN4B
Control input pin ch4 B
14 IN5B
Control input pin ch5 B
40 SI1
Digital transistor input pin 1
15 IN5A
Control input pin ch5 A
41 SI2
Digital transistor input pin 2
16 OUT1A H-bridge output pin ch1 A
42 OUT5A H-bridge output pin ch5 A
17 OUT1B H-bridge output pin ch1 B
43 OUT5B H-bridge output pin ch5 B
18 OUT2A H-bridge output pin ch2 A
44 PGND2 Motor ground pin ch5 and ch6
19 OUT2B H-bridge output pin ch2 B
45 OUT6A H-bridge output pin ch6 A
20 PGND1 Motor ground pin ch1 to ch4
46 OUT6B H-bridge output pin ch6 B
21 OUT3B H-bridge output pin ch3 B
47 OUT7A H-bridge output pin ch7 A
22 OUT3A H-bridge output pin ch3 A
48 RNF
Resistance connection pin for output current detection ch7
23 OUT4B H-bridge output pin ch4 B
49 OUT7B H-bridge output pin ch7 B
24 OUT4A H-bridge output pin ch4 A
50 SENSE Output current detection pin ch7
25 IN1A
Control input pin ch1 A
51 SO2
Digital transistor output pin 2
26 IN1B
Control input pin ch1 B
52 SO1
Digital transistor output pin 1
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
5/15
2009.06 - Rev.A
5 Page 
BD6757KN, BD6889GU
Technical Note
In the case of drive the Stepping Motor using ch1 and ch2 IN/IN input mode of the BD6757KN and BD6889GU
2 Phases
IN1A
INPUT
IN1B IN2A
IN2B
OUTPUT
OUT1A OUT1B OUT2A OUT2B
Output mode
ch1 / ch2
L L L L Z Z Z Z Stand by
H L H L H L H L 1. CW / CW
L H H L L H H L 3. CCW / CW
L H L H L H L H 5. CCW / CCW
H L L H H L L H 7. 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.
1-2 Phases
INPUT
OUTPUT
IN1A IN1B IN2A IN2B OUT1A OUT1B OUT2A
LLLLZZZ
HLHLHLH
L LHLZZH
LHHL LHH
LHL L LHZ
LHLHLHL
L L LHZZL
HL LHHL L
HL L LHL Z
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.
OUT2B
Z
L
L
L
Z
H
H
H
Z
Output mode
ch1 / ch2
Stand by
1. CW / CW
2. Z / CW
3. CCW / CW
4. CCW / Z
5. CCW / CCW
6. Z / CCW
7. CW / CCW
8. CW / Z
IN1A
H
L
IN1B H
L
H
IN2A L
IN2B H
L
H
OUT1A L
OUT1B H
L
H
OUT2A L
OUT2B
H
L
13571357
Fig.14 2 Phases Timing Sequence with IN/IN Input
IN1A
H
L
IN1B H
L
H
IN2A L
IN2B H
L
H
OUT1A L
OUT1B H
L
H
OUT2A L
OUT2B
H
L
12345678
：High impedance
Fig.15 1-2 Phases Timing Sequence with IN/IN Input
OUT1B
CCW
CW
OUT2A
31
57
Forward
OUT1A
CW
OUT1B
CCW
CW
OUT2A
321
48
567
Forward
OUT1A
CW
Reverse
OUT2B
CCW
Fig.16 Torque Vector of 2 Phases Mode
Reverse
OUT2B
CCW
Fig.17 Torque Vector of 1-2 Phases Mode
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
11/15
2009.06 - Rev.A
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet BD6757KN.PDF ] | |
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