参数资料
| 型号： | BD9306AFVM-TR |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM 8-MSOP |
| 标准包装： | 1 |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 800kHz |
| 占空比： | 83% |
| 电源电压： | 4.2 V ~ 18 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-VSSOP，8-MSOP（0.110"，2.80mm 宽） |
| 包装： | 标准包装 |
| 其它名称： | BD9306AFVM-DKR BD9306AFVM-DKR-ND BD9306AFVMDKR |
BD9306AFVM, BD9305AFVM
Technical Note
? Example of application
※ We recommend the application circuit examples with confidence, but hope that you will thoroughly check the characteristics
over again when putting them to use.
When you change the external circuit constant and use, please make a decision to leave a sufficient margin after taking
into consideration the deviation etc. of external components and ROHM IC, in terms of not only the static characteristic but
also the transient characteristic.
Moreover, please understand that our company can not confirm fully with regard to the patent right.
＜ Master Slave Function ＞
The master slave function, which is that the synchronous switching is possible by using these IC of BD9305AFVM /
BD9306AFVM through their multi-connection, is mounted. The following drawing shows an example of connection circuit
in which BD9305AFVM is connected on the master side and BD9306AFVM is connected on the slave side.
VCC
CTL1
RT
CT
BD9305AFVM
(Master Side)
CTL0
CTL2
BD9306AFVM
(Slave Side)
Vo2
Vo1
Fig.31 Master Slave Application Circuit
In the above-mentioned circuit, BD9306AFVM, which is synchronized with the switching frequency determined by RT and
CT of BD9305AFVM that is the master, operates.In addition, the ON/OFF of output can be controlled by connecting the
switch to the COMP terminal. (Refer to the following table)
Control signal correspondence table
Output state
Control signal
Vo1
OFF
OFF
ON
ON
Vo2
OFF
ON
OFF
ON
CTL0
Low
High
High
High
CTL1
＊
High
Low
Low
CTL2
＊
Low
High
Low
＊ The same in either case of High / Low.
Similarly in the case of connecting three or more than three, synchronization is possible by connecting the CT terminal of
Master and the CT terminal of Slave
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
11/14
2009.05 - Rev.A
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