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PDF BU24026GU Data sheet ( Hoja de datos )
| Número de pieza | BU24026GU | |
| 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
BU24026GU
●General Description
BU24026GU 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-6ch: Voltage control type H-bridge
7ch: Current control type H-bridge
Built-in 2 channels PI driving circuit
Built-in 3 channels Waveforming circuit
●Applications
Digital still cameras
●Typical Application Circuit
●Key Specifications
Digital Power Supply Voltage:
Driver Power Supply Voltage:
Output Current (1ch-7ch):
Input Clock Frequency:
FET ON Resistance (1ch-6ch):
FET ON Resistance (7ch):
Operating Temperature Range:
2.7V to 3.6V
2.7V to 5.5V
±500mA(Max)
1MHz to 27.5MHz
1.5Ω(Typ)
0.9Ω(Typ)
-20℃ to +85℃
●Package
VCSP85H3
3.80mm x 3.80mm x 1.00mm
Example1
Photo interrupter
DVDD
DVSS
OUT5A
5ch
M OUT5B Driver
OUT6A
OUT6B
6ch
Driver
SENSE6
RNF6
OUT6A
OUT6B
7ch
Driver
Logic
VDDAMP
MVCC12
MVCC34
MVCC56
MGND7
MGND12
MGND34
MGND56
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
1/19
TSZ02201-0M2M0BC12050-1-2
18.Apr.2013 Rev.002
1 page  
BU24026GU
Datasheet
●Description of Blocks
Stepping Motor Driver (1ch-6ch Driver)
Built-in stepping motor driver of PWM driving type.
Maximum 3 stepping motor can be driven independently.
Built-in voltage feedback circuit of D-class type.
(1) Control
(ⅰ)Autonomous Control
The stepping motor is rotated by setting the registers for the stepping motor control.
The state of rotation command (executing:1, finished:0), Cache register 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 registers.
Cache registers enable the setting of the 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
5/19
TSZ02201-0M2M0BC12050-1-2
18.Apr.2013 Rev.002
5 Page 
BU24026GU
●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
0 32 64 96 128
Serial setting code
Figure 9. 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 10. Output Current
(Current driver block, RRNF = 1.0Ω, RL = 5.0Ω)
0.20
0.15
0.10
0.05
0.00
2.0
IIH=30mA
2.5 3.0 3.5
DVDD ［V］
Figure 11. Output Voltage
DVDD Dependency
(PI driving circuit)
4.0
1600
1400
1370mW
1200
1000
800
548mW
600
400
200
0
0
85℃
25 50 75 100 125
Ambient Temperature ［℃］
150
Figure 12. Power Dissipation Curve
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/19
TSZ02201-0M2M0BC12050-1-2
18.Apr.2013 Rev.002
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet BU24026GU.PDF ] | |
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