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參數(shù)資料
| 型號： | TL7705 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Supply voltage Supervisor |
| 中文描述： | 電源電壓監(jiān)控 |
| 文件頁數(shù)： | 16/17頁 |
| 文件大?。?/td> | 340K |
| 代理商： | TL7705 |
Design
Tips
12
Literature Number: SLVAE04
Figure 14. Printed Circuit Layout for the supply voltage supervisor
When using the supply voltage supervisor TL770xB in certain applications a current limiting
resistor R
(figure 15) in series to the capacitor C
(pin 3) is required. With this circuit the timing
capacitor will be charged up to the supply voltage V
respectively an internal clamping (= 7.1 V),
where the smaller of the these two voltages determines the final voltage at the capacitor. When
the supply voltage drops quickly down to a voltage which is lower than the current voltage at the
capacitor C
, a parasitic current path may be turned on which in turn erroneously activates the
outputs. This effect is avoided when the mentioned parasitic current I
p
stays below 1 mA.
Considering this the resistor R
t
is calculated as follows:
V
t
= ≥
R
V
mA
1
Ct
t
max
where V
t
= threshold voltage of the SENSE input
V
Ctmax
= V
ccmax
or 7 V, the lower of these values apply
When using the TL7705B (V
t
= 4.55 V) with a maximum supply voltage V
cc
= 5.5 V, one gets:
R
V
V
mA
1
t
= ≥
=
55
.
455
.
950
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TL7705A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
| TL7705A_10 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SUPPLY-VOLTAGE SUPERVISORS |
| TL7705AC | 制造商:TI 功能描述:7705 TI IN S3D8A 制造商:Texas Instruments 功能描述: |
| TL7705AC10 | 制造商:Texas Instruments 功能描述: |
| TL7705ACD | 功能描述:監(jiān)控電路 4.55V Monitor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 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(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 |
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