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PDF BU24031GW Data sheet ( Hoja de datos )
| Número de pieza | BU24031GW | |
| 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
BU24031GW
●General Description
BU24031GW 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 5 channels Driver block.
1ch-4ch: Voltage control type H-bridge
(Adaptable to STM 1systems)
5ch: Current control type H-bridge
Built-in 2 channels PI driving circuit
Built-in 3 channels Waveforming circuit
Built-in FLL digital servo circuit
Built-in PLL circuit
●Applications
Digital still cameras
●Typical Application Circuit
Example1
●Key Specifications
I/O Power Supply Voltage:
Digital Power Supply Voltage:
Driver Power Supply Voltage:
Output Current (1ch-5ch):
Input Clock Frequency:
FET ON Resistance (1ch-4ch):
FET ON Resistance (5ch):
Operating Temperature Range:
1.62V to 3.6V
2.7V to 3.6V
2.7V to 5.5V
±500mA(Max)
1MHz to 28MHz
2.0Ω(Typ)
1.0Ω(Typ)
-20℃ to +85℃
●Package
UCSP75M2
2.50mm x 2.50mm x 0.85mm
Photo interrupter
DVDDIO
DVDD
DVSS
OUT4A
OUT4B
4ch
Driver
RNF5
OUT5A
OUT5B
5ch
Driver
I
Logic
1ch
Driver
2ch
Driver
3ch
Driver
VDDAMP
MVCC12
MVCC3
MVCC4
MGND
OUT1A
OUT1B
OUT2A
OUT2B
OUT3A
OUT3B
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
TSZ02201-0M2M0BC12010-1-2
2.May.2013 Rev.003
1 page  
BU24031GW
●Description of Blocks
Voltage Driver (3ch, 4ch Driver)
Built-in voltage driver of PWM driving type.
Built-in digital FLL speed control logic for 4ch driver.
Datasheet
(1) Control
(ⅰ)Register Control
■3ch Driver, 4ch 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
■4ch 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
PMW
Control
Logic
H.B.
PI Dr
Comp
DCM
PI
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/20
TSZ02201-0M2M0BC12010-1-2
2.May.2013 Rev.003
5 Page 
BU24031GW
●Typical Performance Curves
(Unless otherwise specified, Ta=25°C, DVDDIO=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 9. 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 ［℃］
Figure 10. Output ON-Resistance
Temperature Dependency
(Current driver block)
100
5
4
3
2
1
0
0 32 64 96 128
Serial s etting code
Figure 11. Average Voltage Accuracy
between different output pins
(Voltage driver block)
400
300
200
100
0
32 64 96 128 160 192 224 256
Serial s etting code
Figure 12. Output Current
(Current driver block, RRNF = 1.0Ω, RL = 5.0Ω)
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/20
TSZ02201-0M2M0BC12010-1-2
2.May.2013 Rev.003
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet BU24031GW.PDF ] | |
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