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| 型號： | TPS3610U18PW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 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 |
| 文件頁數(shù)： | 26/26頁 |
| 文件大小： | 711K |
| 代理商： | TPS3610U18PW |
TPS3610U18, TPS3610T50
BATTERY BACKUP SUPERVISORS FOR RAM RETENTION
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 VBAT, the device automatically switches the connected RAM to backup power when VDD fails. In
order to allow the backup-battery (e.g., a 3.6-V lithium cell) to have a higher voltage than VDD, these supervisors
do not connect VBAT to VOUT when VBAT is greater than VDD. VBAT only connects to VOUT (through a 15- switch)
when VDD falls below VIT and VBAT is greater than VDD. When VDD recovers, switchover is deferred either until
VDD crosses VBAT, or until VDD rises above the reset threshold VIT. VOUT connects to VDD through a 1- (max)
PMOS switch when VDD crosses the reset threshold.
FUNCTION TABLE
VDD > VBAT
VDD > VIT
VOUT
1
VDD
1
0
VDD
0
1
VDD
0
VBAT
Undefined
VBSW Hysteresis
VBAT Mode
VDD Mode
VIT Hysteresis
–
Normal
Supply
V
o
ltage
–
V
DD
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 |
|---|---|
| TPS3610U18PWG4 | 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(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(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(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: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 |
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