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參數資料
型號: TPS7330Q
廠商: Texas Instruments, Inc.
元件分類: 基準電壓源/電流源
英文描述: LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED DELAYED RESET FUNCTION
中文描述: 低技術,集成延遲復位功能降穩壓器
文件頁數: 39/43頁
文件大?。?/td> 638K
代理商: TPS7330Q
TPS7301Q, TPS7325Q, TPS7330Q, TPS7333Q, TPS7348Q, TPS7350Q
LOW-DROPOUT VOLTAGE REGULATORS
WITH INTEGRATED DELAYED RESET FUNCTION
SLVS124F – JUNE 1995 – REVISED JANUARY 1999
39
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
undervoltage supervisor function (continued)
Transient loads or line pulses can also cause a reset to occur if proper care is not taken in selecting the input
and output capacitors. Load transients that are faster than 5
μ
s can cause a reset if high-ESR output capacitors
(greater than approximately 7
) are used. A 1-
μ
s transient causes a reset when using an output capacitor with
greater than 3.5
of ESR. Note that the output-voltage spike during the transient can drop well below the reset
threshold and still not trip if the transient duration is short. A 1-
μ
s transient must drop at least 500 mV below the
threshold before tripping the reset circuit. A 2-
μ
s transient trips RESET at just 400 mV below the threshold.
Lower-ESR output capacitors help by reducing the drop in output voltage during a transient and should be used
when fast transients are expected.
NOTE:
V
IT+
= V
IT–
+Hysteresis
output noise
The TPS73xx has very low output noise, with a spectral noise density < 2
μ
V/
Hz. This is important when
noise-susceptible systems, such as audio amplifiers, are powered by the regulator.
regulator protection
The TPS73xx PMOS-pass transistor has a built-in back diode that safely conducts reverse currents when the
input voltage drops below the output voltage (e.g., during power down). Current is conducted from the output
to the input and is not internally limited. If extended reverse voltage is anticipated, external limiting might be
appropriate.
The TPS73xx also features internal current limiting and thermal protection. During normal operation, the
TPS73xx limits output current to approximately 1 A. When current limiting engages, the output voltage scales
back linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device
failure, care should be taken not to exceed the power dissipation ratings of the package. If the temperature of
the device exceeds 165
°
C, thermal-protection circuitry shuts it down. Once the device has cooled, regulator
operation resumes.
相關PDF資料
PDF描述
TPS7330Y LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED DELAYED RESET FUNCTION
TPS7333Q LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED DELAYED RESET FUNCTION
TPS7348Q LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED DELAYED RESET FUNCTION
TPS7333Y LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED DELAYED RESET FUNCTION
TPS7325Y LOW-DROPOUT VOLTAGE REGULATORS WITH INTEGRATED DELAYED RESET FUNCTION
相關代理商/技術參數
參數描述
TPS7330QD 功能描述:低壓差穩壓器 - LDO Low-Dropout 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS7330QD 制造商:Texas Instruments 功能描述:IC V REG LDO 3V SMD SOIC8
TPS7330QDG4 功能描述:低壓差穩壓器 - LDO Low-Dropout 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS7330QDR 功能描述:低壓差穩壓器 - LDO Low-Dropout 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS7330QDRG4 功能描述:低壓差穩壓器 - LDO Low-Dropout 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 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
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