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參數(shù)資料
| 型號： | TPS3613-33DGSR |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 6/16頁 |
| 文件大小： | 214K |
| 代理商： | TPS3613-33DGSR |
TPS3600D20, TPS3600D33, TPS3600D50
BATTERY-BACKUP SUPERVISORS FOR LOW-POWER PROCESSORS
SLVS336 – DECEMBER 2000
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
NAME
BATTOK
BATTON
CEIN
CEOUT
GND
MR
MSWITCH
PFI
PFO
RESET
VBAT
VDD
VOUT
WDI
I/O
DESCRIPTION
NO.
9
6
5
10
3
11
4
7
8
13
14
2
1
12
O
O
I
O
I
I
I
I
O
O
I
I
O
I
Battery status output
Logic output/external bypass switch driver output
Chip-enable input
Chip-enable output
Ground
Manual reset input
Manual switch to force device into battery-backup mode
Power-fail comparator input
Power-fail comparator output
Active-low reset output
Backup-battery input
Input supply voltage
Supply output
Watchdog timer input
detailed description
battery freshness seal
The battery freshness seal of the TPS3600 family disconnects the backup battery from the internal circuitry until
it is needed. This ensures that the backup battery connected to V
BAT
should be 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)
or V
DD(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.
This 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 measure cycle on-time
of 25
μ
s. This measurement cycle starts after the reset is released. If the battery voltage V
BATT
is below the
negative-going threshold voltage V
(BOK)
, the indicator BATTOK does a high-to-low transition. Otherwise, it its
status remains to the V
OUT
level.
Table 1. Typical Values for BATTOK Indication
SUPERVISOR TYPE
VIT TYP
1.78 V
VBOK MIN
1.84 V
VBOK TYP
1.91 V
VBOK MAX
1.97 V
TPS3600x20
TPS3600x33
2.93 V
3.04 V
3.14 V
3.24 V
TPS3600x50
4.40 V
4.56 V
4.71 V
4.86 V
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TPS3613-33DGST | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS3613-50DGSR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS3613-50DGST | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS3617 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BATTERY-BACKUP SUPERVISOR FOR RAM RETENTION |
| TPS3617-50 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery-Backup Supervisors for RAM Retention |
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