参数资料
| 型号： | BA6951FS-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 7/13页 |
| 文件大小： | 0K |
| 描述： | IC DVR REVERSE MOTOR 16SSOP |
| 标准包装： | 2,500 |
| 应用： | 直流电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | 800mA |
| 电压 - 负载： | 3 V ~ 16 V |
| 电源电压： | 3 V ~ 6 V |
| 工作温度： | -20°C ~ 75°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-SSOPA |
| 包装： | 带卷 (TR) |
BA6950FS, BA6951FS
● External application components setting procedure
The relation between VCTL and the output high voltage is as follows.
Technical Note
· I RT1 = VCTL / R1
· I RT2 = I ACT x R5 / R4
· V RT1 = R3 x ( I RT1 + I RT2 ) + R2 x I RT1
· V MX = 4 x V RT1
····· (1)
····· (2)
····· (3)
····· (4)
VCTL: Torque control voltage
I ACT : Motor current
V M1 , V M2 : Output high voltage
V MX =
4 ( R2 + R3 )
R1
x VTCL +
4 R3 R5
R4
x I ACT
····· (5)
To drive the motor by constant speed as follows.
R L + R ON + R5 =
4 R3 R5
R4
····· (6)
R L : Motor coil impedance
R ON : On resistance of the driver IC
R3, R4, and R5 are first set, and then R1 and R2 are set afterwards.
Table 4 External components
Parts
R1
R2 + R3
R4
R5
C1
C2
C3, C4
C5, C6
Default value
22k ?
1k ? + 1.5k ?
560 ?
5.5 ?
33pF
0.1μF
0.1μF
1~100μF
Parameter
I RT1
V RT1
I RT2
V ATC
V PCT
V PC
V M1 , V M2
VCC, VB
Recommended condition
I RT1 < 1mA
V RT1 x 4 < VB
I RT2 < 1mA
V ATC < 1V
Please confirm the motor
operation
● Interfaces
FIN
RIN
13.5k
3.6k
24k
10k
10k
10k
VCTL
1k
1k
20k
PCT
RC
1k
PC
Fig. 17 FIN, RIN
1k
1k
CS1
Fig.18 VCTL, RC, PCT
1k
1k
TL
Fig.19 PC
M1
M2
VB
RT1
RT2
CS2
1k
CS
ACT
Fig. 20 RT1, RT2
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
Fig.21 CS1, CS2
(BA6950FS)
7/10
Fig.22 CS, TL
(BA6951FS)
Fig.23 VB, ACT, M1,M2
2011.05 - Rev.C
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