- 您现在的位置：买卖IC网 > PDF目录171224 > DS1231SN-50 (DALLAS SEMICONDUCTOR) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 PDF资料下载
参数资料
| 型号： | DS1231SN-50 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | 0.300 INCH, SOIC-16 |
| 文件页数： | 5/9页 |
| 文件大小： | 70K |
| 代理商： | DS1231SN-50 |
DS1231/S
022698 5/9
APPLICATION – MODE PIN CONNECTED TO
GROUND
When the Mode pin is connected to ground, pin 1 is a
current source of 30
A with a VTP+ of 2.5 volts. Pin 1 is
held below the trip point by a switching device like an
opto-isolator as shown in Figure 6. Determination of the
sense point has the same criteria as discussed in the
previous application. However, determining component
values is significantly different. In this mode, the maxi-
mum dynamic range of the sense point versus desired
trip voltage is primarily determined by the selection of a
zener diode. As an example, if the maximum voltage at
the sense point is 200V and the desired trip point is
150V, then a zener diode of 150V will approximately set
the trip point. This is particularly true if power consump-
tion on the high voltage side of the opto-isolator is not an
issue. However, if power consumption is a concern,
then it is desirable to make the value of R1 high. As the
value of R1 increases, the effect of the LED current in
the opto-isolator starts to affect the IN trip point. This can
be seen from the equation shown in Figure 6. R1 must
also be low enough to allow the opto-isolator to sink the
30
A of collector current required by pin 1 and still have
enough resistance to keep the maximum current
through the opto-isolator’s LED within data sheet limits.
Figure 7 illustrates how the DS1231 can be interfaced to
the AC power line when the mode pin is grounded.
AC VOLTAGE MONITOR WITH TRANSFORMER ISOLATION Figure 5
+5VDC
IN
MODE
TOL
GND
VCC
NMI
RST
-10% VCC THRESHOLD
TO
P
DS1231
+5VDC
VOLTAGE SENSE POINT
NOTE: RST requires a pull–up resister.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1611EN | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| DS1691A | (RS-422/RS-423) Line Drivers with TRI-STATE Outputs((RS-422/RS-423) 三态输出的线驱动器) |
| DS1812Z-5 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| DS1813R-10T&R | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| DS1819AR-5T&R | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1232 | 功能描述:监控电路 MicroMonitor Chip RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1232+ | 功能描述:监控电路 MicroMonitor Chip RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1232G | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Detector |
| DS1232GN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage Detector |
| DS1232L | 制造商:Maxim Integrated Products 功能描述: |
发布紧急采购，3分钟左右您将得到回复。