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PDF BU24020GU Data sheet ( Hoja de datos )
| Número de pieza | BU24020GU | |
| 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
BU24020GU
●General Description
BU24020GU 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 4channels Driver block.
1ch-4ch: Voltage control type H-bridge
(Adaptable to STM 2systems)
Built-in 2 channels PI driving circuit
Built-in PLL circuit
●Applications
Digital still cameras
●Typical Application Circuit
●Key Specifications
Digital Power Supply Voltage:
Driver Power Supply Voltage:
Output Current (1ch-4ch):
Input Clock Frequency:
FET ON Resistance (1ch-4ch):
Operating Temperature Range:
2.7V to 3.6V
2.7V to 5.5V
±500mA(Max)
1MHz to 28MHz
1.5Ω(Typ)
-20℃ to +85℃
●Package
VCSP85H2
2.60mm x 2.60mm x 1.00mm
Example1
Photo interrupter
DVDD
DVSS
OUT3A
3ch
M OUT3B Driver
OUT4A
OUT4B
4ch
Driver
Logic
MVCC12
MVCC34
MGND12
MGND34
1ch
Driver
OUT1A
OUT1B
OUT2A
2ch
Driver OUT2B
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
1/17
TSZ02201-0M2M0BC12020-1-2
18.Apr.2013 Rev.002
1 page  
BU24020GU
Datasheet
●Absolute Maximum Ratings (Ta=25℃)
Parameter
Symbol
Power Supply Voltage
DVDD
MVCC
Input Voltage
VIN
Limit
-0.3 to +4.5
-0.3 to +7.0
-0.3 to supply voltage+0.3
Input / Output Current *1
IIN
±500
+50
Storage Temperature Range
TSTG
-55 to +125
Operating Temperature Range TOPE
-20 to +85
Permissible Dissipation *2
PD
800
*1 Must not exceed PD.
*2 To use at a temperature higher than Ta=25 °C, derate 8mW per 1 °C
(At mounting 50mm x 58mm x 1.75mm glass epoxy board.)
Unit Remark
V
V MVCC12, MVCC34
V
mA MVCC12, MVCC34
mA by PIOUT pin
℃
℃
mW
●Recommended Operating Rating (Ta=25℃)
Parameter
Symbol
Digital Power Supply Voltage
DVDD
Driver Power Supply Voltage
MVCC
Clock Operating Frequency
FCLK
Limit
2.7 to 3.6
2.7 to 5.5
1 to 28
Unit Remark
V DVDD≦MVCC
V MVCC12, MVCC34
MHz Reference clock
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/17
TSZ02201-0M2M0BC12020-1-2
18.Apr.2013 Rev.002
5 Page 
BU24020GU
Datasheet
●Serial interface
Control commands are framed by a 16-bit serial input (MSB first) and are sent through CSB, SCLK, and SDATA pins.
The 4 higher-order bits specify addresses, while the remaining 12 bits specify data. Data of every bit is sent through SDATA
pin, which is retrieved during the rising edge of SCLK. Data becomes valid when CSB is Low is registered during the rising
edge of CSB. Furthermore, the interface will be synchronized with the falling edges of SCLK to output the SOUT data of the
12 bits.
CSB
SCLK
SDATA
x D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
x
SOUT
Hiz
Address
x
Data
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Hiz
＜Register map＞
Address[3:0]
Data[11:0]
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0000
A_Mode[1:0]
A_SEL[2:0]
A_different_output_voltage[6:0]
0 000
A_Cycle[5:0]
00
0 010
A_Cycle[13:6]
0001
0 1 1 0 A_BEXC 0 0 A_BSL A_AEXC 0 0 A_ASL
1 1 1 0 0 0 A_POS[1:0] 0 0 A_PS A_Stop
0 0 1 0 A_EN A_RT
A_Pulse[9:0]
0 0 1 1 A_ACT A_BUSY B_ACT B_BUSY L L L L L L L L
0100
B_Mode[1:0]
B_SEL[2:0]
B_different_output_voltage[6:0]
0 000
B_Cycle[5:0]
00
0 010
B_Cycle[13:6]
0 1 1 0 B_BEXC 0 0 B_BSL B_AEXC 0 0 B_ASL
0101
1
0
0
0
0
0 3_CHOP[1:0] 0
0 4_CHOP[1:0]
1 0 1 3_State_CTL[1:0]
3_PWM_Duty[6:0]
1 1 0 4_State_CTL[1:0]
4_PWM_Duty[6:0]
1 1 1 0 0 0 B_POS[1:0] 0 0 B_PS B_Stop
0 1 1 0 B_EN B_RT
B_Pulse[9:0]
0111
A_Position[9:6]
B_Position[9:6]
LLLL
1011
0
0
0
0
0
0 Edge 0
0
0 B_CTL A_CTL
1100
0
0 Chopping[1:0] CacheM 0
0 CLK_EN
CLK_DIV[3:0]
1101
0
0
0
0
0
0
0
0
0
0 PI_CTL2 PI_CTL1
1110
1
1
0
0
0
0
0 STB 0
0 STM_RS CMD_RS
Addresses other
than those above
Setting prohibited
(Note1) The notations A B in the register map correspond to Ach and Bch respectively. Ach is defined as 1ch and 2ch driver, Bch as 3ch and 4ch driver,
(Note2) After reset (Power ON reset), the initial condition is saved in all registers
(Note3) The addresses 4’b0011, and 4’b0111 have data (ACT, BUSY, Position [9:6]), which are internal register values and output from SOUT pin.
(Note4) For Mode, different output voltage, Cycle, EN, and RT registers, data that are written before the access to the Pulse register becomes valid and
determines the rising edge of CSB after the access to the Pulse register.
(The Mode, different output voltage, Cycle, EN, RT, and Pulse registers contain Cache registers. Any registers other than those do not contain Cache
registers.)
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/17
TSZ02201-0M2M0BC12020-1-2
18.Apr.2013 Rev.002
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet BU24020GU.PDF ] | |
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