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参数资料
| 型号： | TC1271ASBVCT |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | LEAD FREE, PLASTIC, SOT-23, 5 PIN |
| 文件页数： | 13/40页 |
| 文件大小： | 551K |
| 代理商： | TC1271ASBVCT |
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TC1270A/70AN/71A
DS22035B-page 20
2007 Microchip Technology Inc.
4.2.3
POWER-DOWN/BROWN-OUTS
As the device powers-down/brown-outs, the VDD falls
from a voltage above the devices trip point (VTRIP). The
device will trip at a voltage between the maximum trip
point
(VTRIP(MAX)) and the minimum trip point
(VTRIP(MIN)). Once the device voltage (VDD) goes
below this voltage, the RST/RST pin will be forced to
the active state.
Figure 4-8 shows the waveform of the RST pin as
determined by the VDD voltage. As the VDD voltage falls
from the normal operating point, the device “enters”
reset
by
crossing
the
VTRIP voltage (between
VTRIP(MAX) and VTRIP(MIN)). Then when VDD voltage
rises, the device “exits” reset by crossing the VTRIP volt-
age (below or at VTRIP(MAX)). After the “exit” state has
been detected, the Reset Delay Timer (tRST) starts.
Once the tRST time completes, the Reset pin is driven
inactive.
Table 4-3 shows the state of the RST or RST pins.
TABLE 4-3:
RESET PIN STATES
FIGURE 4-8:
RST
Operation as determined by the VTRIP.
Device
State of RST Pin when:
Output Driver
VDD < VTRIP
VDD > VTRIP
(1)
VDD < VTRIP
VDD > VTRIP
(1)
TC1270A
L
H
—
Push-Pull
TC1271A
—
H
L
Push-Pull
Note 1:
The RST/RST pin will be driven inactive after the Reset Delay Timer (tRST) times out.
VDD
VTRIP
RST(1)
1V
< 1V is outside the
device specifications
tRD
tRST
tRD
tRST
VTRIP
(with VDD Falling)
(with VDD Rising)
Note 1:
The TC1270AN requires an external pull-up resistor.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1271ASBVCTTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1271ASBVRCTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1271ASCVCTTR | 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 |
| TC1271ASCVRCTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Voltage Supervisor with Manual Reset Input |
| TC1271ASVCTTR | 功能描述:监控电路 5Pin uP Reset Mon 2.93V 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 |
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