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PDF BD6370GUL Data sheet ( Hoja de datos )

Número de pieza BD6370GUL
Descripción 5-Channel System Lens Driver
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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Datasheet
Motor Drivers for Digital Still Cameras
5-Channel System Lens Driver
for Digital Still Cameras
BD6370GUL
General Description
The BD6370GUL is a motor driver that integrates 3
Full-ON or Constant-Voltage type H-bridges, 1
Constant-Voltage or Linear Constant-Current or
Full-ON type H-bridge and 1 Linear Constant-Current
type H-bridge. The device can drive one stepping
motor for auto focus, and DC motors for zoom and iris.
It is therefore possible to drive another stepping motor
for either zoom or iris, because it has the system to
drive 6-channel H-bridges exclusively.
Features
Low ON-Resistance Power CMOS Output
Drive Mode Switch Function
Serial Interface 3-line Bus Control
Exclusive 6-Channel Drive Function
6-Bits D/A Converters for Constant-Voltage
and Constant-Current Control
High-Precision (±5%) Constant-Voltage Driver
High-Precision (±3%) Linear Constant-Current
Driver
Both Constant-Voltage Drive Block and
Constant-Current Drive Block feature Phase
Compensation Capacitor-Free Design
Under Voltage Locked Out Protection
& Thermal Shut Down Circuit
Key Specifications
Power Supply Voltage Range:
2.7V to 5.5V
Motor Power Supply Voltage Range: 2.7V to 5.5V
Circuit Current:
1.3mA(Typ)
Stand-By Current:
3.0µA(Max)
Control Input Voltage Range:
0V to VCCV
H-Bridge Output Current:
-0.4A/ch to +0.4A/ch
Output ON-Resistance(Each Channel): 1.4Ω(Typ)
Operating Temperature Range: -25°C to +85°C
Package
VCSP50L2
W(Typ) x D(Typ) x H(Max)
2.60mm x 2.60mm x 0.55mm
VCSP50L2
Applications
Mobile system
Home appliance
Amusement system, etc
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/32
TSZ02201-0H3H0B601350-1-2
09.Dec.2015 Rev.001

1 page




BD6370GUL pdf
BD6370GUL
Description of Blocks continued
4. The D/A Converter Settings for Each Channel
The three H-Bridges (channel 1 to 3) can drive motors as Constant-Voltage or Full-ON mode. The H-Bridge of
channel 4 can drive it as Constant-Voltage or Constant-Current or Full-ON mode, while the H-Bridge of channel 5 is
always set for Constant-Current mode. In case of driving each H-bridge as Full-ON mode, serial data of each D/A
Converter (DAC12 and DAC3) for Constant-Voltage mode should be set all bits high. If channel 4 is set to
Constant-Voltage mode, serial data of D/A Converter (DACI4) for Constant-Current mode should be set all bits high.
In case of driving H-bridge as Constant-Current mode, serial data of D/A Converter (DACV4) for Constant-Voltage
mode should be set all bits high, while driving as Full-ON mode, serial data of both D/A Converters should be set all
bits high. In case of driving channel 4 as Constant-Voltage or Full-ON mode, it is not necessary to connect the
external resistor for output current detection at RNF4 pin. When driving as Constant-Current mode, design the
application in consideration of both internal metal impedance and external resistor for output current detection.
(a) Full-ON Mode (Channel 1 to Channel 4)
D/A Converter Setting Range
VDACx: 6b111111 Fixed (x = 12, 3, V4, and I4)
(b) Constant-Voltage Mode (Channel 1 to Channel 4)
Formula for Output High Voltage:
VVOHx[V] = 8 x VDACx[V] (8 x VDACx VM[V], x = 12, 3, and V4)
VVOHx[V] = VM[V] (8 x VDACx > VM[V], x = 12, 3, and V4)
D/A Converter Setting Range
8 x VDACx: 6b010100 to 111111 (x = 12, 3, and V4)
(In case of setting channel 4, set VDACI4: 6b111111, in addition to the above condition)
(c) Constant-Current Mode (Channel 4 & Channel 5)
Formula for Output Current:
IOUTx[A] = VDACx[V] / (RMETALx[Ω] + RNFx[Ω]) (x = I4 and 5)
RMETALx; the internal metal impedance
(Channel 4; RMETALI4[Ω] = 0.004(Typ))
(Channel 5; RMETAL5[Ω] = 0.022(Typ))
RNFx; the resistor value for output current detection at RNFx pin
D/A Converter Setting Range
VDACx: 6b001010 to 111111 (x = I4 and 5)
(In case of setting channel 4, set VDACV4: 6b111111, in addition to the above condition)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
5/32
TSZ02201-0H3H0B601350-1-2
09.Dec.2015 Rev.001

5 Page





BD6370GUL arduino
BD6370GUL
Timing chart continued
Table 4. DATA BIT MAP [000]
ADR.
Bit[B] Bit[A]
000
TEST
(Note 5)
TEST
(Note 5)
(Note 5) Must be held at 0 (GND)
Bit[9]
MODE
45
Bit[8]
MODE
34
Bit[7]
MODE
23
DATA BIT
Bit[6]
MODE
13
Bit[5]
MODE
3C
Bit[4]
MODE
3B
Bit[3]
MODE
3A
Bit[2]
MODE
12C
Bit[1]
MODE
12B
Bit[0]
MODE
12A
Refer to the p.19/32 to p.21/32 about MODE12A & MODE12B.
Refer to the p.20/32 about MODE3A & MODE3B.
Table 5. I/O Truth Table for Drive Mode Selection (Channel 1 to Channel 3)
Bit[5]
Bit[2]
Drive Mode for Output Terminals
MODE3C MODE12C
Channel 3
Channel 2
Channel 1
0-
Full-ON
-
-
1 - Constant-Voltage -
-
-0
-
Full-ON
Full-ON
-1
- Constant-Voltage Constant-Voltage
Note
DAC3: 6’b111111
DAC12: 6’b111111
Table 6. I/O Truth Table for Exclusive Drive Mode Selection
Bit[9] Bit[8] Bit[7] Bit[6]
Input Pins Correspond to Outputs
MODE MODE MODE MODE
45 34 23 13
0000
0(Note 6)
0
0
1
INPUT
45
OUT
4A-4B
INPUT
34
OUT
3A-3B
INPUT
2
OUT
2A-2B
INPUT
1
OUT
1A-1B
Note
Opened Output Terminals
OUT5A, 5B
Ref
No.
(Next)
1
0(Note 6)
0
1
0
0(Note 6)
0
1
1
0
1
0
0
OUT
5A-5B
OUT
4A-4B
OUT
2A-2B
OUT
1A-1B
OUT3A, 3B
0
1
0
1
OUT
5A-5B
OUT
4A-4B
OUT
2A-2B
OUT
1A-3A
OUT1B, 3B
0
1
1
0
OUT
5A-5B
OUT
4A-4B
OUT
2A-3B
OUT
1A-1B
OUT2B, 3A
0
1
1
1
OUT
5A-5B
OUT
4A-4B
OUT
2A-3B
OUT
1A-3A
OUT1B, 2B
1
0
0
0
OUT
5A-5B
OUT
3A-3B
OUT
2A-2B
OUT
1A-1B
OUT4A, 4B
1(Note 6)
0
0
1
2
3
4
5
6
1(Note 6)
0
1
0
1(Note 6)
0
1
1
1(Note 6)
1
0
0
1(Note 6)
1
0
1
1(Note 6)
1
1
0
1(Note 6)
1
1
(Note 6) Must not set data
1
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
11/32
TSZ02201-0H3H0B601350-1-2
09.Dec.2015 Rev.001

11 Page







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