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参数资料
| 型号： | IP4011 |
| 厂商： | INTERPION SEMICONDUCTOR CO.,LTD. |
| 英文描述： | 5-CH MOTOR DRIVE IC |
| 中文描述： | 5通道马达驱动电路 |
| 文件页数： | 5/23页 |
| 文件大小： | 687K |
| 代理商： | IP4011 |
- 5 -
August. 2002
(Rev.5)
WWW.INTERPIONSEMI.COM
IP4011
5-CH MOTOR DRIVE IC
APPLICATION SUMMARY
-
Reference & all mute
When you want to control output bias current of the IP4011, use pin #23 as follows
Pin#23
Mute
Above1.0V
off
Below 1.0V
on
All Output
Driver Bias
VCC2
23
Q1
1V
30k
-
Mute
When you want to control output bias current of the IP4011, you can also use pin#7 as follows
All Output
Driver Bias
VCC2
20k
20k
7
Q2
Q3
Pin#7
Mute
High
off
Low
on
Fig1. Reference & all mute function
Fig2. Mute function
As shown in figure 1,
Pin#23 is a negative input of the comparator,
and the other Input is the 1.0V reference.
If the voltage of the pin#23 falls below 1.0V,
TR Q1 will be turned on and the output bias current
will be shut down
As shown in figure 2,
Pin#7 is a base input of the TR Q2.
If the voltage of the pin#7 is low or open,
TR Q2 will be turned off and TR Q3 will be turned on,
so the bias current will be shut down by TR Q3.
If the voltage of the pin#7 is high,
the bias circuit operates normally.
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