- 您现在的位置：买卖IC网 > PDF目录69403 > TC1270ANTAVRCTR 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 PDF资料下载
参数资料
| 型号： | TC1270ANTAVRCTR |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封装： | LEAD FREE, PLASTIC, SOT-143, 4 PIN |
| 文件页数： | 19/48页 |
| 文件大小： | 541K |
| 代理商： | TC1270ANTAVRCTR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页当前第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页
TC1270A/70AN/71A
DS22035D-page 26
2007-2011 Microchip Technology Inc.
5.4
Modifying The Trip Point, VTRIP
Although the TC127XA device has a fixed voltage trip
point (VTRIP), it can be necessary to make custom
adjustments. This is accomplished by connecting an
external resistor divider to the TC127XA VDD pin. This
causes the VSOURCE voltage to be higher than it is
when the TC127XA input equals its VTRIP voltage
(Figure 5-5).
To maintain detector accuracy, the bleeder current
through the divider should be significantly higher than
the 15 A maximum operating current required by the
TC127XA. A reasonable value for this bleeder current
is 1 mA (67 times the 10 A required by the TC127XA).
For example, if VTRIP = 2V and the desired trip point is
2.5V, the value of R1 + R2 is 2.5 k (2.5V/1 mA). The
value of R1 + R2 can be rounded to the nearest
standard value and plugged into the equation shown in
1% tolerance resistors are recommended.
FIGURE 5-5:
Modifying Trip-Point using
External Resistor Divider.
5.5
MOSFET Low-Drive Protection
Low operating power and small physical size make the
TC1270AN series ideal for many voltage detector
applications. Figure 5-6 shows a low-voltage gate drive
protection circuit that prevents the logic-level MOSFET
from overheating due to insufficient gate voltage. When
the input signal is below the threshold of the
TC1270AN, its output grounds the gate of the
MOSFET.
FIGURE 5-6:
MOSFET Low-Drive
Protection.
TC127XA
VDD
RST
VSS
R1
VSOURCE
R2
or RST
V
SOURCE
R
1
R
1
R
2
+
--------------------
V
TRIP
Where:
Note: In this example, VSOURCE must be greater
than VTRIP.
VSOURCE = Voltage to be monitored
VTRIP = Threshold Voltage setting
VDD
RST
VSS
TC1270AN
270
(1)
MTP3055EL
VDD
RL
VTRIP
Note 1:
This resistance should be sized appro-
priately for the selected trip point volt-
age related to the VOL operation.
相关PDF资料 |
PDF描述 |
|---|---|
| TC1270AMVCTTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| TC1270ASAVCTTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| TC1270AMAVRCTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| TC1270ANTVRCTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| TC1270ANSBVCTTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1270ANTBVCTTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1270ANTBVRCTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1270ANTCVCTTR | 功能描述:监控电路 Vltg Detector 3.08V Reset Threshold 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 |
| TC1270ANTCVRCTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1270ANTVCTTR | 功能描述:监控电路 5Pin uP Reset Mon 3.08V Reset Thresh 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 |
发布紧急采购，3分钟左右您将得到回复。