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参数资料
| 型号： | TPS3600D33PWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| 封装： | 5.10 X 6.60 MM, GREEN, PLASTIC, TSSOP-14 |
| 文件页数： | 26/26页 |
| 文件大小： | 677K |
| 代理商： | TPS3600D33PWRG4 |
TPS3600D20, TPS3600D25, TPS3600D33, TPS3600D50
BATTERY BACKUP SUPERVISORS FOR LOW POWER PROCESSORS
SLVS336B DECEMBER 2000 REVISED JANUARY 2007
9
detailed description (continued)
manual switchover (MSWITCH)
While operating in the normal mode from VDD, the device can be manually forced to operate in the
battery-backup mode by connecting MSWITCH to VDD. The table below shows the different switchover modes.
MSWITCH
STATUS
VDD mode
GND
VDD mode
VDD mode
VDD
Switch to battery-backup mode
Battery-backup mode
GND
Battery-backup mode
Battery-backup mode
VDD
Battery-backup mode
If the manual switchover feature is not used, MSWITCH must be connected to ground.
watchdog
In a microprocessor- or DSP-based system, it is not only important to supervise the supply voltage, it is also
important to ensure the correct program execution. The task of a watchdog is to ensure that the program is not
stalled in an indefinite loop. The microprocessor, microcontroller, or the DSP have to toggle the watchdog input
within typically 0.8 s to avoid a time-out from occurring. Either a low-to-high or a high-to-low transition resets
the internal watchdog timer. If the input is unconnected the watchdog is disabled and will be retriggered
internally.
saving current while using the watchdog
The watchdog input is internally driven low during the first 7/8 of the watchdog time-out period, then momentarily
pulses high, resetting the watchdog counter. For minimum watchdog input current (minimum overall power
consumption), leave WDI low for the majority of the watchdog time-out period, pulsing it low-high-low once
within 7/8 of the watchdog time-out period to reset the watchdog timer. If instead, WDI is externally driven high
for the majority of the time-out period, a current of e.g. 5 V/40 k
≈ 125 A can flow into WDI.
VIT
WDI
RESET
td
t(tout)
VOUT
td
Undefined
Figure 4. Watchdog Timing
www.ti.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS3600D50 | 制造商:TI 制造商全称:Texas Instruments 功能描述:BATTERY-BACKUP SUPERVISORS FOR LOW-POWER PROCESSORS |
| TPS3600D50PW | 功能描述:监控电路 Battery-Backup for LP Processor 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 |
| TPS3600D50PWG4 | 功能描述:监控电路 Battery-Backup for LP Processor 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 |
| TPS3600D50PWR | 功能描述:监控电路 Battery-Backup for LP Processor 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 |
| TPS3600D50PWRG4 | 功能描述:监控电路 Battery-Backup for LP Processor 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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