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參數資料
| 型號： | TPS3620-33DGK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION |
| 中文描述： | 備用電池RAM保持監督員 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 309K |
| 代理商： | TPS3620-33DGK |
www.ti.com
FEATURES
Supply Current of 40 μA (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 (TPS3619)
Pin-For-Pin Compatible With MAX819,
MAX703, and MAX704
8-Pin MSOP Package
Temperature Range -40
°
C to 85
°
C
DESCRIPTION
The TPS3619 and TPS3620 families of supervisory
circuits monitor and control processor activity by
providing backup-battery switchover for data retention
of CMOS RAM.
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
V
BAT
RESET
MR
PFO
8
7
6
5
1
2
3
4
V
OUT
V
DD
GND
PFI
DGK PACKAGE
(TOP VIEW)
ACTUAL SIZE
3,05 mm x 4,98 mm
V
DD
V
BAT
PFI
Backup
Battery
RESET
PFO
V
OUT
GND
R
x
R
y
External
Source
0.1
μ
F
Power
Supply
GND
RESET
I/O
V
CC
Switchover
Capacitor
0.1
μ
F
TPS3619
TPS3620
Microcontroller
or
Microprocessor
Manual
Reset
MR
TPS3619-33, TPS3619-50
TPS3620-33, TPS3620-50
SLVS387E–APRIL 2001–REVISED SEPTEMBER 2004
BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION
During power on, RESET is asserted when the
supply voltage (V
or V
) 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
). 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
has risen above V
. 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 TPS3619 and TPS3620 are
available in an 8-pin MSOP package and are
characterized for operation over a temperature range
of -40
°
C to 85
°
C.
TYPICAL OPERATING CIRCUIT
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2001–2004, Texas Instruments Incorporated
相關PDF資料 |
PDF描述 |
|---|---|
| TPS3705-30Y | PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL |
| TPS3705-33Y | PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL |
| TPS3705-50Y | PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL |
| TPS3707-25Y | PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL |
| TPS3707-30Y | PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS3620-33DGKR | 功能描述:監控電路 3.3-V 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 |
| TPS3620-33DGKRG4 | 功能描述:監控電路 3.3-V 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 |
| TPS3620-33DGKT | 功能描述:監控電路 3.3-V 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 |
| TPS3620-33DGKTG4 | 功能描述:監控電路 3.3-V 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 |
| TPS3620-33MDGKREP | 功能描述:監控電路 Mil Enhance Backup- Battery Sups 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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