參數(shù)資料
型號(hào): TPS3619
廠商: Texas Instruments, Inc.
英文描述: BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION(用于RAM數(shù)據(jù)保持的后備電源監(jiān)控器)
中文描述: 備用電池RAM保持監(jiān)督員(用于內(nèi)存數(shù)據(jù)保持的后備電源監(jiān)控器)
文件頁(yè)數(shù): 4/13頁(yè)
文件大?。?/td> 249K
代理商: TPS3619
SLVS387B
APRIL 2001
REVISED DECEMBER 2002
4
www.ti.com
timing diagram
VIT
VBAT
VDD
VOUT
RESET
td
t
t
t
td
Terminal Functions
TERMINAL
NAME
GND
MR
PFI
PFO
RESET
VBAT
VDD
VOUT
I/O
DESCRIPTION
NO.
3
6
4
5
7
8
2
1
I
I
I
Ground
Manual reset input
Power-fail comparator input
Power-fail comparator output
Active-low reset output
Backup-battery input
Input supply voltage
Supply output
O
O
I
I
O
detailed description
battery freshness seal
The battery freshness seal of the TPS3619 family disconnects the backup-battery from internal circuitry until
it is needed. This function ensures that the backup-battery connected to V
BAT
is fresh when the final product
is put to use. The following steps explain how to enable the freshness seal mode.
1.
2.
3.
4.
Connect V
BAT
(V
BAT
> V
BAT
min)
Ground PFO
Connect PFI to V
DD
(PFI = V
DD
)
Connect V
DD
to power supply (V
DD
> V
IT
) and keep connected for 5 ms < t < 35 ms
The battery freshness seal mode is disabled by the positive-going edge of RESET when V
DD
is applied.
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TPS3619-33 制造商:TI 制造商全稱:Texas Instruments 功能描述:備份電池監(jiān)督員保留內(nèi)存
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TPS3619-33DGK 制造商:Texas Instruments 功能描述:IC's
TPS3619-33DGKG4 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
TPS3619-33DGKR 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