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參數資料
| 型號： | LP3982IMM-2.82 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Micropower, Ultra Low-Dropout, Low-Noise, 300mA CMOS Regulator |
| 中文描述： | 2.82 V FIXED POSITIVE LDO REGULATOR, 0.22 V DROPOUT, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數： | 3/12頁 |
| 文件大小： | 361K |
| 代理商： | LP3982IMM-2.82 |
Electrical Characteristics
(Continued)
Note 1:
Absolute Maximum ratings indicate limits beyond which damage may occur. Electrical specifications do not apply when operating the device outside of its
rated operating conditions.
Note 2:
All voltages are with respect to the potential at the ground pin.
Note 3:
Maximum Power dissipation for the device is calculated using the following equations:
where T
J(MAX)
is the maximum junction temperature, T
A
is the ambient temperature, and
θ
JA
is the junction-to-ambient thermal resistance. E.g. for the MSOP-8
package
θ
JA
= 223C/W, T
J(MAX)
= 150C and using T
A
= 25C, the maximum power dissipation is found to be 561mW. The derating factor (1/
θ
JA
) = 4.5mW/C,
thus below 25C the power dissipation figure can be increased by 4.5mW per degree, and similarity decreased by this factor for temperatures above 25C. The value
of the
θ
JA
for the LLP package is specifically dependent on the PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal
resistance and power dissipation for the LLP package, refer to Application Note AN-1187.
Note 4:
Typical Values represent the most likely parametric norm.
Note 5:
All limits are guaranteed by testing or statistical analysis.
Note 6:
Human body model: 1.5k
in series with 100pF.
Note 7:
Condition does not apply to input voltages below 2.5V since this is the minimum input operating voltage.
Note 8:
Dropout voltage is measured by reducing V
IN
until V
O
drops 100mV from its nominal value at V
IN
-V
O
= 0.5V. Dropout Voltage does not apply to the 1.8
version.
Note 9:
The SET pin is not externally connected for the fixed versions.
Note 10:
The FAULT detection voltage is specified for the input to output voltage differential at which the FAULT pin goes active low.
Functional Block Diagram
20036913
L
www.national.com
3
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LP3982IMM-3.0 | 功能描述:低壓差穩壓器 - LDO 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 |
| LP3982IMM-3.0 | 制造商:Texas Instruments 功能描述:V REG LDO 0.3A 3.0V 3982 MSOP8 |
| LP3982IMM-3.0/NOPB | 功能描述:低壓差穩壓器 - LDO 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 |
| LP3982IMM-3.3 | 功能描述:低壓差穩壓器 - LDO 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 |
| LP3982IMM-3.3 | 制造商:Texas Instruments 功能描述:V REG LDO 0.3A 3.3V 3982 MSOP8 |
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