參數(shù)資料
型號(hào)： TLE4299
廠商： INFINEON TECHNOLOGIES AG
英文描述： 5-V Low-Drop Fixed Voltage Regulator
中文描述： 5 - V低拖放固定穩(wěn)壓器
文件頁(yè)數(shù)： 16/22頁(yè)
文件大?。?/td> 356K
代理商： TLE4299
TLE 4299
Data Sheet Rev. 1.0
16
2002-01-17
Early Warning
The early warning function compares a voltage defined by the user to an internal
reference voltage. Therefore the supervised voltage has to be scaled down by an
external voltage divider in order to compare it to the internal sense threshold of typical
1.35 V. The sense output pin is set low, when the voltage at SI falls below this threshold.
A typical example where the circuit can be used is to supervise the input voltage
V
I
to
give the microcontroller a prewarning of low battery condition.
Calculation to the voltage divider can be easily done since the sense input current can
be neglected.
Figure 9
Sense Timing Diagram
V
thHL
= (
R
SI1
+
R
SI2
)/
R
SI2
V
SI low
V
thLH
= (
R
SI1
+
R
SI2
)/
R
SI2
V
SI high
[4]
[5]
The sense in comparator uses a hysteresis of typical 100 mV. This hysteresis of the
supervised threshold is multiplied by the resistor dividers amplification (
R
SI1
+
R
SI2
)/
R
SI1
.
The sense in comparator can also be used for receiving data with a threshold of typical
1.35 V and a hysteresis of 100 mV. Of course also the data signal can be scaled down
with a resistive divider as shown above. With a typical delay time of 2.4 s for positive
transitions and 1.7 s for negative transitions receiving data of up to 100 kBaud are
possible.
AED02559
t
Sense
Input
Voltage
t
SI, High
V
SI, Low
V
High
Low
Output
Sense
t
PD SO LH
PD SO HL
t
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLE4299_04 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:5-V Low Drop Fixed Voltage Regulator
TLE4299_07 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Low-Drop Fixed Voltage Regulator
TLE42994 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Low Dropout Fixed Voltage Regulator
TLE42994E 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) LINEAR VLTGE REG RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L
TLE42994E V33 功能描述:低壓差穩(wěn)壓器 - LDO Low Dropout Fixed Voltage 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(dòng)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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