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PDF BU24035GW Data sheet ( Hoja de datos )
| Número de pieza | BU24035GW | |
| 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
BU24035GW
●General Description
BU24035GW 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 6 channels Driver block
1ch-4ch: Voltage control type H-bridge
(Adaptable to STM 2systems)
5ch: Voltage / Current control type H-bridge
6ch: Current control type H-bridge
Built-in 2 channels PI driving circuit
Built-in 1 channels Waveforming circuit
Built-in FLL digital servo circuit
Built-in PLL circuit
Built-in STM control circuit : Autonomous control
(cache / updown mode), Clock IN control
●Key Specifications
Digital Power Supply Voltage:
Driver Power Supply Voltage:
Output Current (1ch-4ch,6ch):
Output Current (5ch):
Input Clock Frequency:
FET ON Resistance (1ch-4ch):
FET ON Resistance (5ch,6ch):
Operating Temperature Range:
2.7V to 3.6V
2.7V to 5.5V
±500mA(Max)
±600mA(Max)
1MHz to 28MHz
1.5Ω(Typ)
1.0Ω(Typ)
-20℃ to +85℃
●Package
UCSP75M3
3.10mm x 3.10mm x 0.850mm
●Applications
Digital still cameras
●Typical Application Circuit
Example1
Photo interrupter
DVDD
DVSS
I
RNF5
OUT5A
5ch
OUT5B Driver
RNF6
OUT6A
6ch
OUT6B Driver
Logic
VDDAMP
MVCC12
MVCC34
MGND56
MGND12
MGND34
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
1/21
TSZ02201-0M2M0BC12080-1-2
18.Apr.2013 Rev.002
1 page  
BU24035GW
●Description of Blocks
Voltage / Current Driver (5ch Driver)
Built-in voltage driver of PWM driving type / constant current driver.
Built-in digital FLL speed control logic for voltage driver.
Datasheet
(1) Control
(ⅰ)Register Control
■Voltage Driver (at speed control = OFF)
The PWM drive is executed by the PWM duty ratio, the PWM direction and the PWM ON/OFF which are controlled by
the register settings.
Host
PWM duty
Direction
ON/OFF
3
CSB
SCLK
SDATA
SIF
PWM
Control
Logic
H.B.
M
■Voltage Driver (at speed control = ON)
The speed control drive is executed by the target speed value, the direction, the coefficient value of PI filter and the
turning ON/OFF which are controlled by the register settings.
The motor speed is adjusted by comparing the target speed with the motor speed detected at the signal of
photo-interrupter.
Host
Target speed
PI filter
Direction
ON/OFF 3
CSB
SCLK
SDATA
SIF
DCM
Speed control
Logic
PWM
Control
Logic
H.B.
PI Dr
Comp
DCM
PI
■Current Driver
The constant current drive is executed by the output current value, the current direction and the current ON/OFF which
are controlled by the register settings.
Host
Current value
Direction
ON/OFF 3
CSB
SCLK
SDATA
SIF
Control
Logic
Current control
DAC
C.C.
VCM
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/21
TSZ02201-0M2M0BC12080-1-2
18.Apr.2013 Rev.002
5 Page 
BU24035GW
●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］
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
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
11/21
TSZ02201-0M2M0BC12080-1-2
18.Apr.2013 Rev.002
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet BU24035GW.PDF ] | |
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