参数资料
型号: BD9778HFP-TR
厂商: Rohm Semiconductor
文件页数: 8/19页
文件大小: 0K
描述: IC REG BUCK ADJ 2A HRP7
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1 V ~ 35 V
输入电压: 7 V ~ 35 V
频率 - 开关: 50kHz ~ 500kHz
电流 - 输出: 2A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-263-8,D²Pak(7 引线+接片),TO-263CA
包装: 标准包装
供应商设备封装: HRP7
其它名称: BD9778HFP-DKR
BD9778HFP-DKR-ND
BD9778HFPDKR
BD9778F, BD9778HFP, BD9001F, BD9781HFP
Timing chart
(BD9781HFP)
Technical Note
-
-
While in basic operation mode
V IN
Internal
OSC
FB
SW
EN/SYNC
While in overcurrent protection mode
I O
Internal
OSC
FB
SW
Fig.27
Output short circuit
Auto reset
Auto reset
Auto reset
Auto reset
Fig.28
External synchronizing function (BD9781HFP)
In order to activate the external synchronizing function, connect the frequency setting resistor to the RT pin and then input
a synchronizing signal to the EN/SYNC pin. As the synchronizing signal, input a pulse wave higher than a frequency determined
with the setting resistor (RT). On the BD9781HFP, design the frequency difference to be within 50%. Furthermore,
set the pulse wave duty between 10% and 90%.
F SYNC
: For RT only
Internal
OSC
Fig.29
: For external
synchronization
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
8/16
2010.02 - Rev. B
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