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參數(shù)資料
| 型號： | LP2981IM5-2.7 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Micropower 100 mA Ultra Low-Dropout Regulator |
| 中文描述： | 2.7 V FIXED POSITIVE LDO REGULATOR, 0.375 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, SOP-5 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大小： | 346K |
| 代理商： | LP2981IM5-2.7 |
SLVS521B JULY 2004 REVISED OCTOBER 2004
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
capacitors
input capacitor (C
in
)
A minimum value of 1 F (over the entire operating temperature range) is required at the input of the LP2981.
In addition, this input capacitor should be located within 1 cm of the input pin and connected to a clean analog
ground. There is no Equivalent Series Resistance (ESR) requirement for this capacitor, and the capacitance
can be increased without limit. A good quality ceramic or tantalum capacitor can be used.
output capacitor (C
out
)
As a PNP regulator, the LP2981 requires the output capacitor to meet both a minimum capacitance and ESR
value. Required ESR values as a function of load current are provided for various output voltages, load currents,
and capacitances (see Figures 1–4).
Minimum C
out
: 3.3
μ
F (can be increased without limit to improve transient response stability margin)
ESR range: see Figures 1–4
Figure 4. 5-V/3.3-
μ
F ESR Curves
Figure 5. 5-V/10-
μ
F ESR Curves
Figure 6. 3-V/3.3-
μ
F ESR Curves
Figure 7. 3-V/10-
μ
F ESR Curves
E
Load Current mA
E
Load Current mA
E
Load Current mA
E
Load Current mA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP2981IM5-2.8 | Micropower 100 mA Ultra Low-Dropout Regulator |
| LP2981IM5-2.9 | Micropower 100 mA Ultra Low-Dropout Regulator |
| LP2981IM5-3.0 | Micropower 100 mA Ultra Low-Dropout Regulator |
| LP2981IM5-3.1 | Micropower 100 mA Ultra Low-Dropout Regulator |
| LP2981IM5-3.2 | Micropower 100 mA Ultra Low-Dropout Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2981IM5-3.0 | 功能描述:低壓差穩(wěn)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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2981IM5-3.0 | 制造商:Texas Instruments 功能描述:V REG LDO +3.0V SMD 2981 SOT235 |
| LP2981IM5-3.0/NOPB | 功能描述:低壓差穩(wěn)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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2981IM5-3.1 | 制造商:Rochester Electronics LLC 功能描述:100MA UPOWER SOT LDO REGULATOR - Bulk |
| LP2981IM5-3.1/NOPB | 功能描述:IC REG LDO 3.1V .1A SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:1 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）: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 |
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