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BD5356FVE-TR

BD5356FVE-TR首页预览图
型号: BD5356FVE-TR
PDF文件:
  • BD5356FVE-TR PDF文件
  • BD5356FVE-TR PDF在线浏览
功能描述: Free Delay Time Setting CMOS Voltage Detector IC Series
PDF文件大小: 400.42 Kbytes
PDF页数: 共16页
制造商: ROHM[Rohm]
制造商LOGO: ROHM[Rohm] LOGO
制造商网址: http://www.rohm.com
捡单宝BD5356FVE-TR
PDF页面索引
120%
Datasheet
12/13
BD52xx series BD53xx series
TSZ02201-0R7R0G300040-1-
2
© 2013 ROHM Co., Ltd. All rights reserved.
22.May.2013 Rev.006
www.rohm.com
TSZ2211115001
3) Examples of the power supply with resistor dividers
In applications wherein the power supply voltage of an IC comes from a resistor divider circuit, an in-rush current will flow
into the circuit when the output level switches from “High” to “Low” or vice versa. In-rush current is a sudden surge of
current that flows from the power supply (VDD) to ground (GND) as the output logic changes its state. This current flow
may cause malfunction in the systems operation such as output oscillations, etc.
Figure.21
When an in-rush current (I1) flows into the circuit (Refer to Fig. 21) at the time when output switches from “Low” to “High”,
a voltage drop of I1×R2 (input resistor) will occur in the circuit causing the VDD supply voltage to decrease. When the VDD
voltage drops below the detection voltage, the output will switch from “High” to “Low”. While the output voltage is at “Low”
condition, in-rush current will stop flowing and the voltage drop will be reduced. As a result, the output voltage will switches
again from “Low” to “High” which causes an in-rush current and a voltage drop. This operation repeats and will result to
oscillation.
Figure.22 IDD Peak Current vs. Power Supply Voltage
*
This data is for reference only.
The figures will vary with the application, so please confirm actual operating conditions before use.
VOUT
R2
VDD
BD52xx
BD53xx
GND
R1
I1
V1
CIN
CL
IDD
V
DD
VDET
0
Through
Current
0.001
0.01
0.1
1
10
3 4 5 6 7 8 9 10
IDD-peak[mA]
VDD[V]
VDD - IDD Peak Current Ta=25
BD52xx
BD53xx
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