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参数资料
| 型号： | BD45485G |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | SSOP-5 |
| 文件页数： | 6/9页 |
| 文件大小： | 733K |
| 代理商： | BD45485G |
6/8
Examples of the power supply with resistor dividers
In applications where the power supply input terminal (VDD) of an IC with resistor dividers, it is possible that a through current will
momentarily flow into the circuit when the output logic switches, resulting in malfunctions (such as output oscillatory state).
(Through-current is a current that momentarily flows from the power supply (VDD) to ground (GND) when the output level switches from
“High” to “Low” or vice versa.)
Fig.21
A voltage drop of [the through-current (I1)] × [input resistor (R2)] is caused by the through current, and the input voltage to descends,
When the output switches from “Low” to “High”. When the input voltage decreases and falls below the detection voltage, the output voltage
switches from “High” to “Low”. At this time, the through-current stops flowing through output “Low”, and the voltage drop is eliminated. As a
result, the output switches from “Low” to “High”, which again causes the through current to flow and the voltage drop. This process is
repeated, resulting in oscillation.
Fig.22
Current Consumption vs. Power Supply Voltage
VOUT
R2
VDD
BD45□□□G
BD46□□□G
GND
R1
I1
V1
ER
CIN
IDD
VDD
VDET
0
Through Current
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BD45485G-TR | 功能描述:电压监测器/监控器 RESET DETEC VOLT 2.3V RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| BD45E231 | 制造商:ROHM 制造商全称:Rohm 功能描述:Counter Timer Built-in CMOS Voltage Detector IC |
| BD45E231G-MTR | 制造商:ROHM 制造商全称:Rohm 功能描述:Counter Timer Built-in CMOS Voltage Detector IC |
| BD45E232 | 制造商:ROHM 制造商全称:Rohm 功能描述:Counter Timer Built-in CMOS Voltage Detector IC |
| BD45E232G-MTR | 制造商:ROHM 制造商全称:Rohm 功能描述:Counter Timer Built-in CMOS Voltage Detector IC |
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