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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 2/22頁 |
| 文件大?。?/td> | 356K |
| 代理商： | TLE4299 |
TLE 4299
Data Sheet Rev. 1.0
2
2002-01-17
Circuit Description
The TLE 4299 is a PNP based very low drop linear voltage regular. It regulates the
output voltage to
V
Q
= 5 V for an input voltage range of 5.5 V
V
I
45 V. The control
circuit protects the device against potential caused by damages overcurrent and
overtemperature.
The internal control circuit achieves a 5 V output voltage with a tolerance of 2%.
The device includes a power on reset and an under voltage reset function with adjustable
reset delay time and adjustable reset switching threshold as well as a sense control/early
warning function. The device includes an inhibit function to disable it when the ECU is
not used for example while the motor is off.
The reset logic compares the output voltage
V
Q
to an internal threshold. If the output
voltage drops below this level, the external reset delay capacitor
C
D
is discharged. When
V
D
is lower than
V
LD
, the reset output RO is switched Low. If the output voltage drop is
very short, the
V
LD
level is not reached and no reset-signal is asserted. This feature
avoids resets at short negative spikes at the output voltage e.g. caused by load changes.
As soon as the output voltage is more positive than the reset threshold, the delay
capacitor is charged with constant current. When the voltage reaches
V
UD
the reset
output RO is set High again.
The reset threshold is either the internal defined
V
RT
voltage (typical 4.6 V) or can be
lowered by a voltage level at the RADJ input down to 3.5 V. The reset delay time and the
reset reaction time are defined by the external capacitor
C
D
. The reset function is active
down to
V
I
= 1 V.
In addition to the normal reset function, the device gives an early warning. When the SI
voltage drops below
V
SI,low
, the devices asserts the SI output Low to indicate the logic
and the -processor that this voltage has dropped. The sense function uses a hysteresis:
When the SI-voltage reaches the
V
SI,high
level, SO is set high again. This feature can be
used as early warning function to notice the -controller about a battery voltage drop and
a possible reset in a short time. Of cause also any other voltage can be observed by this
feature.
The user defines the threshold by the resistor-values
R
SI1
and
R
SI2
.
For the exact timing and calculation of the reset and sense timing and thresholds, please
refer to the application section.
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PDF描述 |
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| TLE4299G | 5-V Low-Drop Fixed Voltage Regulator |
| TLE4299GM | 5-V Low-Drop Fixed Voltage Regulator |
| TLE4726 | 2-Phase Stepper-Motor Driver |
| TLE4726G | 2-Phase Stepper-Motor Driver |
| tle 4726 | 2-Phase Stepper-Motor Driver(兩相步進(jìn)式馬達(dá)驅(qū)動器) |
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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