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參數(shù)資料
| 型號(hào)： | LP2980IBP-5.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Micropower 50 mA Ultra Low-Dropout Regulator |
| 中文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.225 V DROPOUT, PBGA5 |
| 封裝： | MICRO, BUMP, SMD-5 |
| 文件頁(yè)數(shù)： | 15/18頁(yè) |
| 文件大?。?/td> | 423K |
| 代理商： | LP2980IBP-5.0 |
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Typical Applications
(Continued)
brought low, the converter will be in shutdown, and will draw
less than 1 μA from the source.
Notes:
A. Drive this input with a logic signal (see Application Hints).
If the shutdown function is not to be used, tie the ON/OFF
pin directly to the V
IN
pin.
B. Capacitor is required for regulator stability. Minimum size
is shown, and may be increased without limit.
C. Increasing the output capacitance improves transient re-
sponse and increases phase margin.
D. A heatsink may be required for this transistor. The maxi-
mum allowable value for thermal resistance of the heatsink
is dependent on ambient temperature and load current (see
curves in ). Once the value is obtained from the graph, a
heatsink must be selected which has a thermal resistance
equal to or lower than this value. If the value is above
60C/W, no heatsink is required (the TO-220 package alone
will safely dissipate this).
For these curves, a maximum junction temperature of 150C
is assumed for the pass transistor. The case-to-heatsink at-
tachment thermal resistance is assumed to be 1.5C/W. All
calculations are for 5.5V input voltage (which is worst-case
for power dissipation).
DS012078-54
FIGURE 8. Heatsink Thermal Resistance Requirements
for
Figure 7
L
www.national.com
15
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2980IBPX-3.3 | 制造商:Rochester Electronics LLC 功能描述:50MA LDO MICRO SMD-5 - Bulk 制造商:Texas Instruments 功能描述: |
| LP2980IBPX-3.3/NOPB | 功能描述:IC REG LDO 3.3V 50MA 5USMD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP2980IBPX-5.0 | 制造商:Rochester Electronics LLC 功能描述:50MA LDO MICRO SMD-5 - Bulk |
| LP2980IBPX-5.0/NOPB | 功能描述:IC REG LDO 5V 50MA 5MICROSMD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP2980IM5-1.8 | 制造商:Rochester Electronics LLC 功能描述:50MA MICROPWR SOT-23 ULTRA LDO - Bulk 制造商:Texas Instruments 功能描述: |
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