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参数资料
| 型号： | TC1270ARCVRCTR |
| 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： | 10/40页 |
| 文件大小： | 551K |
| 代理商： | TC1270ARCVRCTR |
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TC1270A/70AN/71A
DS22035B-page 18
2007 Microchip Technology Inc.
FIGURE 4-4:
TC1270A Block Diagram.
FIGURE 4-5:
TC1270AN Block Diagram.
FIGURE 4-6:
TC1271A Block Diagram.
4.2
Voltage Detect Circuit
The Voltage Detect Circuit monitors VDD. The device’s
Reset voltage trip point (VTRIP) is selected when the
device is ordered. The voltage on the device’s VDD pin
determines the output state of the RST/RST pin.
VDD voltages above the VTRIP(MAX) force the RST/RST
pin inactive. VDD voltages below the VTRIP(MIN) force
the RST/RST pin active. The state of the RST/RST pin
is unknown for VDD voltages between VTRIP(MAX) and
TABLE 4-1:
VDD LEVELS TO RST/RST
OUTPUT STATES
The term VTRIP will be used as the general term for the
trip point voltage where the device actually trips.
In the case where VDD is falling (for voltages starting
above VTRIP(MAX)):
Voltages above VTRIP(MAX) will never cause the
RST/RST output pin to be driven Active.
Voltages below VTRIP(MIN) will always cause the
RST/RST output pin to be driven Active.
Now in the case where VDD is rising (for voltages
starting below VTRIP(MIN)):
Voltages above VTRIP(MAX) will always cause the
RST/RST output pin to be driven Inactive, (or
floated - TC1270AN) after the Reset Delay Timer
(tRST), times out.
VDD
Comparator
+
–
Output
Driver
RST
Reference
Noise Filter
MR
Voltage
Delay
(Push-
Pull)
VDD
Comparator
+
–
RST
Reference
VSS
Noise Filter
MR
Voltage
Delay
Output
Driver
(Open-
Drain)
VDD
Comparator
+
–
RST
Reference
Noise Filter
MR
Voltage
Delay
Output
Driver
(Push-
Pull)
VDD Voltage Level
Output State
RST
VDD ≥ VTRIP(MAX)
H (1, 2)
L (1)
VTRIP(MIN) < VDD < VTRIP(MAX)
UU
VDD ≤ VTRIP(MIN)
LH
Legend: H = Driven High
L = Driven Low
U = Unknown, driven either High or Low
Note 1:
The RST/RST pin will be driven inactive
after the Reset Delay Timer (tRST) times
out.
2:
The TC1270AN RST pin will be floated
after the Reset Delay Timer (tRST) times
out.
相关PDF资料 |
PDF描述 |
|---|---|
| TC1271AMCVRCTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| TC1271ARCVCT | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| TC1271ATCVCT | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| TC1270ALBVRC | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| TC1270ASCVRCTR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1270ARVCTTR | 功能描述:监控电路 5Pin uP Reset Mon 2.63V 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 |
| TC1270ARVRCTR | 功能描述:监控电路 4Pin uP Reset Mon 2.63V 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 |
| TC1270ASBVCTTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1270ASBVRCTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1270ASCVCTTR | 功能描述:监控电路 Vltg Detector 2.93V 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 |
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