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參數(shù)資料
| 型號： | TPS3610U18PWR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | BATTERY-BACKUP SUPERVISORS FOR RAM RETENTION |
| 中文描述： | 電池備份的RAM保持監(jiān)事 |
| 文件頁數(shù)： | 9/22頁 |
| 文件大?。?/td> | 453K |
| 代理商： | TPS3610U18PWR |
SLVS327B
–
DECEMBER 2000
–
REVISED DECEMBER 2002
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
backup-battery switchover
In case of a brownout or power failure, it may be necessary to preserve the contents of RAM. If a backup-battery
is installed at V
BAT
, the device automatically switches the connected RAM to backup power when V
DD
fails. In
order to allow the backup-battery (e.g., a 3.6-V lithium cell) to have a higher voltage than V
DD
, these supervisors
do not connect V
BAT
to V
OUT
when V
BAT
is greater than V
DD
. V
BAT
only connects to V
OUT
(through a 15-
switch)
when V
DD
falls below V
IT
and
V
BAT
is greater than V
DD
. When V
DD
recovers, switchover is deferred either until
V
DD
crosses V
BAT
, or until V
DD
rises above the reset threshold V
IT
. V
OUT
connects to V
DD
through a 1-
(max)
PMOS switch when V
DD
crosses the reset threshold.
FUNCTION TABLE
VDD > VBAT
1
VDD > VIT
1
VOUT
VDD
VDD
VDD
VBAT
1
0
0
1
0
0
Undefined
VBSW Hysteresis
VBAT Mode
VDD Mode
VIT Hysteresis
–
–
V
VBAT
–
Backup-Battery Supply Voltage
–
V
Figure 4. Normal Supply Voltage vs Backup-Battery Supply Voltage
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS3610U18PWRG4 | 功能描述:監(jiān)控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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:未知廠家 功能描述:Analog IC |
| TPS3610U30PWR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS3610U33PWR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS3610U50 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BATTERY-BACKUP SUPERVISORS FOR RAM RETENTION |
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