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參數資料
| 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： | 6/22頁 |
| 文件大?。?/td> | 453K |
| 代理商： | TPS3610U18PWR |
SLVS327B
–
DECEMBER 2000
–
REVISED DECEMBER 2002
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
9
BATTOK
O
Battery status output
BATTON
6
O
Logic output/external bypass switch driver output
CEIN
5
I
Chip-enable input
CEOUT
10
O
Chip-enable output
GND
3
I
Ground
LOWLINE
11
O
Early power-fail warning output
MSWITCH
4
I
Manual switch to force device into battery-backup mode
VOUT
PFI
1
O
Supply output
7
I
Power-fail comparator input
PFO
8
O
Power-fail comparator output
RESET
13
O
Active-low reset output
VBAT
VDD
WDI
14
I
Backup-battery input
2
I
Input supply voltage
12
I
Watchdog timer input
detailed description
battery freshness seal
The battery freshness seal of the TPS3610 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.
Connect V
BAT
(V
BAT
> V
BAT
min)
Ground PFO
2.
3.
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.
BATTOK output
4.
BATTOK is a logic feedback of the device to indicate the status of the backup battery. The supervisor checks
the battery voltage every 200 ms with a voltage divider load of approximately 100 k
and a measurement cycle
on-time of 25
μ
s. The measurement cycle starts after the reset is released. If the battery voltage V
BAT
is below
the negative-going threshold voltage V
IT(BOK)
, the indicator BATTOK does a high-to-low transition. Otherwise
it retains its status to V
DD
level.
25
μ
s
IBAT
200 ms
100
μ
A
t
Figure 1. BATTOK Timing
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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: 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)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 |
| 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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