参数资料
| 型号： | BA6423AF-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | IC FAN MOTOR DRIVER 1A SOP8 TR |
| 标准包装： | 2,500 |
| 应用： | 风扇电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | 1A |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-SOP |
| 包装： | 带卷 (TR) |
BA6423AF
Datasheet
● Safety measure
1) Reverse connection protection diode
Reverse connection of power results in IC destruction as shown in Fig.10. When reverse connection is possible, reverse
connection protection diode must be added between power supply and Vcc.
In normal energization
Vcc
Reverse power connection
Vcc
After reverse connection
destruction prevention
Vcc
Circuit
block
Each
pin
Circuit
block
Each
pin
Circuit
block
Each
pin
GND
Internal circuit impedance high
amperage small
GND
Large current flows
Thermal destruction
GND
No destruction
Fig.10 Flow of current when power is connected reversely
2) Measure against Vcc voltage rise by back electromotive force
Back electromotive force (Back EMF) generates regenerative current to power supply. However, when reverse
connection protection diode is connected, Vcc voltage rises because the diode prevents current flow to power supply.
ON
ON
ON
Phase
switching
ON
Fig.11 Vcc voltage rise by back electromotive force
When the absolute maximum rated voltage may be exceeded due to voltage rise by back electromotive force, place
(A) Capacitor or (B) Zener diode between Vcc and GND. If necessary, add both (C).
(A) Capacitor
ON
ON
(B) Zener diode
ON
ON
(C) Capacitor and zener diode
ON
ON
Fig.12 Measure against Vcc voltage rise
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19.Jul.2012 Rev.001
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