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參數(shù)資料
| 型號(hào)： | TPS3610U18PW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| 封裝： | 5.10 X 6.60 MM, GREEN, PLASTIC, TSSOP-14 |
| 文件頁(yè)數(shù)： | 2/26頁(yè) |
| 文件大小： | 711K |
| 代理商： | TPS3610U18PW |
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TPS3610U18, TPS3610T50
BATTERY BACKUP SUPERVISORS FOR RAM RETENTION
SLVS327B – DECEMBER 2000 – REVISED DECEMBER 2002
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
manual switchover (MSWITCH)
While operating in the normal mode from VDD, the device can be forced manually to operate in battery-backup
mode by connecting MSWITCH to VDD. Refer to Table 1 for different switchover modes.
Table 1. Switchover Modes
MSWITCH
STATUS
V
mode
GND
VDD mode
VDD
Switch to battery-backup mode
Batter back p mode
GND
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 important not only to supervise the supply voltage, but also to
ensure 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 DSP has to toggle the watchdog input within typically
0.8 s to avoid the occurence of a time-out. 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 is 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 the input
momentarily pulses high, resetting the watchdog counter. For minimum watchdog input current (minimum
overall power consumption), WDI should be left low for the majority of the watchdog time-out period, and pulsed
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 timeout 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 5. Watchdog Timing
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| TPS3610U18PWG4 | 功能描述:監(jiān)控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3610U18PWR | 功能描述:監(jiān)控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3610U18PWRG4 | 功能描述:監(jiān)控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3610U25PWR | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Analog IC |
| TPS3610U30PWR | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Analog IC |
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