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参数资料
| 型号： | BU4247F |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封装： | ROHS COMPLIANT, SOP-4 |
| 文件页数： | 8/11页 |
| 文件大小： | 282K |
| 代理商： | BU4247F |
Technical Note
6/10
BU42
□□G, BU42□□F, BU42□□FVE, BU43□□G, BU43□□F, BU43□□FVE series
www.rohm.com
2009.06 - Rev.B
2009 ROHM Co., Ltd. All rights reserved.
Circuit Applications
1) Examples of a common power supply detection reset circuit
Application examples of BU42
□□G/F/FVE series
(Open Drain output type) and BU43
□□G/F/FVE series
(CMOS output type) are shown below.
CASE1:The power supply of the microcontroller (Vdd2)
differs from the power supply of the reset detection
(Vdd1).
Use the Open Drain Output Type (BU42
□□G/FVE)
attached a load resistance (RL) between the output and
Vdd2. (As shown Fig.18)
CASE2:The power supply of the microcontroller (Vdd1) is
same as the power supply of the reset detection (Vdd1).
Use CMOS output type (BU43
□□G/FVE) or Open Drain
Output Type (BU42
□□G/FVE) attached a load
resistance (RL) between the output and Vdd1.
(As shown Fig.19)
When a capacitance CL for noise filtering is connected to
the Vout pin (the reset signal input terminal of the
microcontroller), please take into account the waveform
of the rise and fall of the output voltage (Vout).
VDD1
BU43□□□
CIN
GND
CT
Microcontroller
RST
CL
(Capacitor for
noise filtering)
Fig.19 CMOS Output type
VDD1
BU42□□□
VDD2
GND
Microcontroller
RST
CL
(Capacitor for
noise filtering)
CT
RL
CIN
Fig.18 Open collector Output type
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BU4247F-TR | 功能描述:电压监测器/监控器 LOW VOLT DETEC VOLT 0.9V 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 |
| BU4247FVE | 制造商:ROHM 制造商全称:Rohm 功能描述:Low Voltage Detector IC with Adjustable Output Delay |
| BU4247FVE-TR | 功能描述:电压监测器/监控器 LOW VOLT DETEC VOLT 0.9V 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 |
| BU4247G | 制造商:ROHM 制造商全称:Rohm 功能描述:Low Voltage Detector IC with Adjustable Output Delay |
| BU4247G-TR | 功能描述:电压监测器/监控器 CMOS LOW VOLT DETEC 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 |
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