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PDF BU24024GU Data sheet ( Hoja de datos )
| Número de pieza | BU24024GU | |
| Descripción | System Lens Drivers | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
System Lens Drivers
μ-step System Lens Driver
for Digital Still Cameras
BU24024GU
●General Description
BU24024GU 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 7 channels Driver block
1ch-5ch: Voltage control type H-bridge
(Adaptable to STM 2systems)
6,7ch: Current control type H-bridge
Built-in 2 channels PI driving circuit
●Applications
Digital still cameras
●Typical Application Circuit
●Key Specifications
Digital Power Supply Voltage:
2.7V to 3.6V
Driver Power Supply Voltage:
2.7V to 5.5V
Output Current (1ch-4ch,6ch,7ch): ±400mA(Max)
Output Current (5ch):
±600mA(Max)
Input Clock Frequency:
1MHz to 27.5MHz
FET ON Resistance (1ch-5ch):
1.5Ω(Typ)
FET ON Resistance (6ch,7ch):
1.1Ω(Typ)
Operating Temperature Range:
-20℃ to +85℃
●Package
VCSP85H3
3.50mm x 3.60mm x 1.00mm
Example1
Photo interrupter
DVDD
DVSS
OUT5A
5ch
OUT5B Driver
RNF6
OUT6A
6ch
OUT6B Driver
RNF7
OUT7A
7ch
OUT7B Driver
Logic
VDDAMP67
MVCC12
MVCC34
MVCC5
MGND67
MGND125
MGND34
1ch
Driver
OUT1A
OUT1B
2ch
Driver
OUT2A
OUT2B
3ch
Driver
OUT3A
OUT3B
4ch
Driver
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
1/20
TSZ02201-0M2M0BC12030-1-2
18.Apr.2013 Rev.002
1 page  
BU24024GU
Datasheet
●Description of Blocks
Stepping Motor Driver (1ch-4ch Driver)
Built-in stepping motor driver of PWM driving type.
Maximum 2 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
(ⅰ) Autonomous Control
The stepping motor is rotated by setting the registers for the stepping motor control.
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 registers.
Cache registers enable the setting of subsequent process while the motor is in operation. Through these registers
operations are done continuously.
The state of the rotation command (ACT), state of Cache registers (BUSY), motor operation position (MO) and state of
excitation (MO & ACT) are synchronized with the motor rotation and can be selected to be the output of the STATE pin.
ON/OFF
Direction
Speed
Torque
Amount
3
CSB
SCLK
SDATA
Host
ACT
MO
STATEx1
STATEx2
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
5/20
TSZ02201-0M2M0BC12030-1-2
18.Apr.2013 Rev.002
5 Page 
BU24024GU
●Typical Performance Curves
(Unless otherwise specified, Ta=25°C, DVDD=3.0V, MVCC=5.0V, DVSS=MGND=0.0V)
Datasheet
5
4
IO=±100mA
3
2
1
0
2.0
3.0 4.0 5.0
MVCC ［V］
Figure 5. Output ON-Resistance
MVCC Dependency
(Voltage driver block)
6.0
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
3
2
1
0
2.0
IO=±100mA
3.0 4.0 5.0
MVCC ［V］
6.0
Figure 7. Output ON-Resistance
MVCC Dependency
(Current driver block)
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
11/20
TSZ02201-0M2M0BC12030-1-2
18.Apr.2013 Rev.002
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet BU24024GU.PDF ] | |
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