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參數(shù)資料
| 型號： | TLE4470 |
| 廠商： | SIEMENS AG |
| 英文描述： | Dual Low-Drop Voltage Regulator |
| 中文描述： | 雙低壓降穩(wěn)壓器 |
| 文件頁數(shù)： | 16/22頁 |
| 文件大?。?/td> | 121K |
| 代理商： | TLE4470 |
TLE 4470
Semiconductor Group
16
1998-11-01
Figure 5
Early Warning
The early warning function compares a voltage defined by the user to an internal
reference voltage. Therefore the voltage to be supervised has to be scaled down by an
external voltage divider in order to compare it to internal sense threshold (reference
voltage) which is typically 1.35 V. The sense out pin is set to low when the user defined
voltage falls below this threshold.
A typical example where this circuit can be used is to supervise the input voltage
V
I
to
give the microprocessor a prewarning of a low battery condition.
Calculation of the voltage divider can be easily done since the sense input current can
be neglected.
To minimize transient influences the use of a capacitor in parallel to
R
2
is recommended.
Like the reset output pin, the sense out pin SQ is internally connected to the stand-by
output Q1 via a 30 k
pull-up resistor. The sense out LOW signal at pin SQ is generated
down to an input voltage
V
I1
of 3 V typical.
AES02505
1
Band-Gap
Reference
Reference
Band-Gap
+
_
RADJ
RO
Q1
V
V
I1
GND
R
1
2
R
30 k
1.35 V
1.35 V
_
TLE 4470 G
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLE4470_08 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Dual Low-Drop Voltage Regulator Very low dropout |
| TLE4470G | 功能描述:低壓差穩(wěn)壓器 - LDO LOW DROPOUT REGULATOR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TLE4470GNT | 制造商:Infineon Technologies AG 功能描述:LDO Regulator Pos 5V5V 0.18A/0.35A 20-Pin DSO |
| TLE4470GNTMA1 | 制造商:Infineon Technologies AG 功能描述:LDO Regulator Pos 5V5V 0.18A/0.35A 20-Pin DSO 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC REG LDO 5V/ADJ 20DSO |
| TLE4470GS | 功能描述:低壓差穩(wěn)壓器 - LDO LOW DROPOUT REGULATOR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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