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参数资料
| 型号： | TC1270ATVRCTR |
| 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： | 10/48页 |
| 文件大小： | 541K |
| 代理商： | TC1270ATVRCTR |
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TC1270A/70AN/71A
DS22035D-page 18
2007-2011 Microchip Technology Inc.
3.1
Ground Terminal (VSS)
VSS provides the negative reference for the analog
input voltage. Typically, the circuit ground is used.
3.2
Supply Voltage (VDD)
VDD can be used for power supply monitoring or a
voltage level that requires monitoring.
3.3
Reset Output (RST and RST)
There are three types of Reset output pins. These are:
1.
Push-Pull active-low Reset
2.
Push-Pull active-high Reset
3.
Open-Drain active-low Reset, external pull-up
resistor required.
3.3.1
ACTIVE-LOW (RST) – PUSH-PULL
The RST push-pull output remains low while VDD is
below the Reset voltage threshold (VTRIP). The time
that the RST pin is held low after the device voltage
(VDD) returns to a high level (> VTRIP) is typically
280 ms. After the Reset Delay Timer expires, the RST
pin will be driven to the high state.
3.3.2
ACTIVE-HIGH (RST) – PUSH-PULL
The RST push-pull output remains high while VDD is
below the Reset voltage threshold (VTRIP). The time
that the RST pin is held high after the device voltage
(VDD) returns to a high level (> VTRIP) is typically
280 ms. After the Reset Delay Timer expires, the RST
pin will be driven to the low state.
3.3.3
ACTIVE-LOW (RST) – OPEN-DRAIN
The RST open-drain output remains low while VDD is
below the Reset voltage threshold (VTRIP). The time
that the RST pin is held low after the device voltage
(VDD) returns to a high level (> VTRIP) depends on the
Reset time-out selected. After the Reset Delay Timer
expires, the RST pin will float.
3.4
Manual Reset Input (MR)
The Manual Reset (MR) input pin allows a push button
switch to easily be connected to the system. When the
push button is depressed, it forces a system Reset.
This pin has circuitry that filters noise that may be
present on the MR signal.
The MR pin is active-low and has an internal pull-up
resistor.
33
3
MR
IST(1)
Manual Reset Input Pin
This input allows a push button switch to be
directly connected to a TC1270A/70AN/71A
device’s MR pin, which can be used to force a
system Reset. The input filter ignores noise
pulses that occur on the MR pin.
H = Switch is open (internal pull-up resistor
pulls signal high). State of the RST/RST
pin is determined by other system condi-
tions.
L = Switch is depressed (shorted to ground).
This forces the RST/RST pin Active.
24
2
4
2
4
VDD
—
Power
Supply Voltage
1
—1
—
NC
—
No Connection
TABLE 3-1:
PINOUT DESCRIPTION (CONTINUED)
Pin Number
Sym
Pin
Standard Function
TC1270A
(Push-Pull,
active-low)
TC1270AN
(Open-Drain,
active-low)
TC1271A
(Push-Pull,
active-high)
SOT
-23-
5
SOT
-143
-4
SOT
-23-
5
SOT
-143
-4
SOT
-23-
5
SOT
-143
-4
Type
Buffer /
Driver
Note 1:
The MR pin has an internal weak pull-up (18.5 k
typical).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1270FERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1270FERCTR | 功能描述:监控电路 4-Pin uP 1.75V Reset 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 |
| TC1270LERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
| TC1270LERCTR | 功能描述:监控电路 4-Pin uP 4.63V Reset 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 |
| TC1270MERC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4-Pin レP Reset Monitors |
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