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PDF BU24038GW Data sheet ( Hoja de datos )
| Número de pieza | BU24038GW | |
| Descripción | System Lens Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
System Lens Drivers
μ-step System Lens Driver
for Digital Still Cameras
BU24038GW
●General Description
BU24038GW is a system Lens Driver that uses μ-step
driving to make the configuration of the sophisticated,
high precision and low noise lens driver system possible.
This IC has a built-in driver for both DC motor and voice
coil motor and a μ-step controller that decreases CPU
power. Therefore, multifunctional lens can be applied.
●Features
Built-in 9 channels Driver block
1ch-8ch: Voltage control type H-bridge
(Adaptable to STM 3systems)
9ch: Current control type H-bridge
Built-in 3 channels PI driving circuit
Built-in 4 channels Waveforming circuit
Built-in PLL circuit
●Key Specifications
Digital Power Supply Voltage:
Driver Power Supply Voltage:
Output Current (1ch-9ch):
Input Clock Frequency:
FET ON Resistance (1ch-8ch):
FET ON Resistance (9ch):
Operating Temperature Range:
2.7V to 3.6V
2.7V to 5.5V
±500mA(Max)
1MHz to 28MHz
1.5Ω(Typ)
1.0Ω(Typ)
-20℃ to +85℃
●Package
USCP75M3
3.80mm x 3.80mm x 0.85mm
●Applications
Digital still cameras
●Typical Application Circuit
Example1
Photo interrupter
DVDD
DVSS
OUT5A
5ch
OUT5B Driver
M
OUT6A
OUT6B/7B 6ch/7ch
OUT7A
Driver
OUT8A
OUT8B
8ch
Driver
RNF9
OUT9A
OUT9B
9ch
Driver
Logic
VDDAMP
MVCC12
MVCC34
MVCC567
MVCC8
MGND9
MGND12
MGND34
MGND567
MGND8
1ch
Driver
2ch
Driver
3ch
Driver
4ch
Driver
OUT1A
OUT1B
OUT2A
OUT2B
OUT3A
OUT3B
OUT4A
OUT4B
M
M
Main Host
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed for protection against radioactive rays
1/22
TSZ02201-0M2M0BC12090-1-2
18.Apr.2013 Rev.002
1 page  
BU24038GW
Datasheet
●Description of Blocks
Stepping Motor Driver (1ch-6ch Driver)
Built-in stepping motor driver of PWM driving type.
Maximum 3 stepping motors can be driven independently.
Built-in voltage feedback circuit of D-class type.
3ch/4ch drivers can also drive independently for DC motor or voice coil motor.
(1) Control
It corresponds to both Clock IN and Autonomous control.
(ⅰ)Clock IN Control
Set the resistors for the stepping motor control.
The stepping motor is rotated and synchronized with the input clock in the STATE pin.
It is possible to select the mode of stepping motor control from μ-step, 1-2 phase excitation, 2 phase excitation and
the number of edge for electrical angle cycle from 4, 8, 32, 64, 128, 256, 512 or 1024.
ON/OFF
Direction
Torque
3
CSB
SCLK
SDATA
Host
（Speed･Amount）
STATE
SIF
STM
Control
Logic
SIN wave
Control
Logic
PWM
Control
Logic
H.B.
H.B.
STM
(ⅱ)Autonomous Control
The stepping motor is rotated by setting the resistors for the stepping motor control.
The state of rotation command (executing:1, finished:0), Cache resistor, and motor position are the output from the
serial output (SOUT pin). Also, the signal (MO output) which is synchronized with the motor rotation is the output from
STATE pin.
It is possible to select the mode of stepping motor control from μ-step (1024 portion), 1-2 phase excitation and
2 phase excitation
Built-in Cache resistors.
Cache resisters enable the setting of subsequent process while the motor is in operation. Through these registers,
operations are done continuously.
ON/OFF
Direction
Speed
Torque
Amount 3
CSB
SCLK
SDATA
Host State
SOUT
Position
STATE
SIF
STM
Control
Logic
SIN wave
Control
Logic
PWM
Control
Logic
H.B.
H.B.
STM
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/22
TSZ02201-0M2M0BC12090-1-2
18.Apr.2013 Rev.002
5 Page 
BU24038GW
●Typical Performance Curves
(Unless otherwise specified, Ta=25°C, DVDD=3.0V, MVCC=5.0V, DVSS =MGND=0.0V)
Datasheet
5
4
3
2
1
0
2.0
IO=±100mA
3.0 4.0 5.0
MVCC ［V］
6.0
Figure 5. Output ON-Resistance
MVCC Dependency
(Voltage driver block)
5
4
IO=±100mA
3
2
1
0
-50
-25 0
25 50 75
Am bient Tem perature［℃］
100
Figure 6. Output ON-Resistance
Temperature Dependency
(Voltage driver block)
5
4
IO=±100mA
3
2
1
0
2.0
3.0 4.0 5.0
MVCC ［V］
Figure 7. Output ON-Resistance
MVCC Dependency
(Current driver block)
6.0
5
4
IO=±100mA
3
2
1
0
-50
-25 0
25 50 75
Am bient Tem perature［℃］
100
Figure 8. Output ON-Resistance
Temperature Dependency
(Current driver block)
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/22
TSZ02201-0M2M0BC12090-1-2
18.Apr.2013 Rev.002
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet BU24038GW.PDF ] | |
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