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参数资料
| 型号： | MAX6351MRUT-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Dual/Triple-Voltage レP Supervisory Circuits |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | SOT-23, 6 PIN |
| 文件页数： | 10/11页 |
| 文件大小： | 280K |
| 代理商： | MAX6351MRUT-T |
MAX6351–MAX6360
Dual/Triple-Voltage
P Supervisory Circuits
8
_______________________________________________________________________________________
During the normal operating mode, the supervisor will
issue a reset pulse for the reset timeout period (140ms
min) if the P does not update the WDI with a valid tran-
sition (HIGH to LOW or LOW to HIGH) within the stan-
dard timeout period (1.6s min).
After each reset event (VCC power-up, manual reset, or
watchdog reset), there is an initial watchdog startup
timeout period of 25.6s. The startup mode provides an
extended period for the system to power up and fully
initialize all P and system components before assum-
ing responsibility for routine watchdog updates. The
normal watchdog timeout period (1.6s min) begins at
the conclusion of the startup timeout period or after the
first transition on WDI before the conclusion of the start-
up period (Figure 3).
Applications Information
Ensuring a Valid RESET Output
Down to VCC = 0
In some systems, it is necessary to ensure a valid reset
even if VCC falls to 0. In these applications, use the cir-
cuit shown in Figure 4. Note that this configuration does
not work for the open-drain outputs of the MAX6352/
MAX6355/MAX6358.
Interfacing to Ps with
Bidirectional Reset Pins
Microprocessors with bidirectional reset pins will con-
tend with the push-pull outputs of these devices. To
prevent this, connect a 4.7k
resistor between RESET
and the P’s reset I/O port, as shown in Figure 5. Buffer
RESET as shown in the figure if this reset is used by
other components in the system.
Figure 4. Ensuring a Valid Reset Low to VCC1 and VCC2 = 0
VCC2VCC1
GND
100k
RST2
RST1
RST
MAX6351 MAX6356
MAX6353 MAX6357
MAX6354 MAX6359
MAX6360
VCC2
VCC1
Figure 5. Interfacing to Ps with Bidirectional Reset I/O
BUFFERED RESET TO OTHER SYSTEM COMPONENTS
4.7k
GND
RESET
P
GND
RST2
RST1
RST
MAX6351–MAX6360
VCC2
VCC1
1.6s
MAX
tWDI-NORMAL
1.6s MAX
tWDI-STARTUP
25.6s MAX
VTH
VCC
WDI
RESET
140ms
Figure 3. Normal Watchdog Startup Sequence
Chip Information
TRANSISTOR COUNT: 855
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6353LTUK-T | Dual/Triple-Voltage レP Supervisory Circuits |
| MAX6353MRUK-T | Dual/Triple-Voltage レP Supervisory Circuits |
| MAX6353MTUK-T | Dual/Triple-Voltage レP Supervisory Circuits |
| MAX6354LTUK-T | Dual/Triple-Voltage レP Supervisory Circuits |
| MAX6354MRUK-T | Dual/Triple-Voltage レP Supervisory Circuits |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6351MSUK-T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual/Triple-Voltage レP Supervisory Circuits |
| MAX6351MSUT | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX6351MSUT+T | 功能描述:监控电路 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 |
| MAX6351MSUT-T | 功能描述:监控电路 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 |
| MAX6351MTUK-T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual/Triple-Voltage レP Supervisory Circuits |
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