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參數資料
| 型號： | TPS3619 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION(用于RAM數據保持的后備電源監控器) |
| 中文描述： | 備用電池RAM保持監督員（用于內存數據保持的后備電源監控器） |
| 文件頁數： | 1/13頁 |
| 文件大小： | 249K |
| 代理商： | TPS3619 |
SLVS387B – APRIL 2001 – REVISED DECEMBER 2002
1
www.ti.com
FEATURES
Supply Current of 40
μ
A (Max)
Battery-Supply Current of 100 nA (Max)
Precision Supply Voltage Monitor
3.3 V, 5 V, Other Options on Request
Backup-Battery Voltage Can Exceed V
DD
Power On Reset Generator With Fixed
100-ms Reset Delay Time
Voltage Monitor For Power-Fail
or Low-Battery Monitoring
Battery Freshness Seal
Pin-For-Pin Compatible With MAX819,
MAX703, and MAX704
8-Pin MSOP Package
Temperature Range –40 C to 85 C
APPLICATIONS
Fax Machines
Set-Top Boxes
Advanced Voice Mail Systems
Portable Battery-Powered Equipment
Computer Equipment
Advanced Modems
Automotive Systems
Portable Long-Time Monitoring Equipment
Point of Sale Equipment
DESCRIPTION
The TPS3619 family of supervisory circuits
monitor and control processor activity by
providing backup-battery switchover for data
retention of CMOS RAM.
During power on, RESET is asserted when the
supply voltage (V
DD
or V
BAT
) becomes higher
than 1.1 V. Thereafter, the supply voltage
supervisor monitors V
DD
and keeps RESET
output active as long as V
DD
remains below the
threshold voltage (V
IT
). An internal timer delays
the return of the output to the inactive state (high)
to ensure proper system reset. The delay time
starts after V
DD
has risen above V
IT
. When the
supply voltage drops below V
IT,
the output
becomes active (low) again.
The product spectrum is designed for supply
voltages of 3.3 V and 5 V. The circuits are available
in an 8-pin MSOP package. The TPS3619 devices
are
characterized
for
temperature range of –40
°
C to 85
°
C.
operation
over
a
PACKAGE INFORMATION
TA
DEVICE NAME
TPS3619–33DGKR
TPS3619–50DGKR
MARKING
AFL
–40
°
C to 85
°
C
AFM
The DGKR passive indicates tape and reel of 2,500 parts.
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Copyright
2002, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
V
BAT
RESET
MR
PFO
8
7
6
5
1
2
3
4
V
OUT
V
DD
GND
PFI
DGK PACKAGE
(TOP VIEW)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS3619-33 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:備份電池監督員保留內存 |
| TPS3619-33DGK | 功能描述:監控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（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 |
| TPS3619-33DGK | 制造商:Texas Instruments 功能描述:IC's |
| TPS3619-33DGKG4 | 功能描述:監控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（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 |
| TPS3619-33DGKR | 功能描述:監控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（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 |
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