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參數(shù)資料
| 型號(hào)： | LP2981-25YZUR |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Crimp; Body Material:Aluminum; Series:PT00; No. of Contacts:3; Connector Shell Size:8; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| 中文描述： | 100馬超差穩(wěn)壓器具有關(guān)斷 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 346K |
| 代理商： | LP2981-25YZUR |
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
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| LP2981-28YZUR | 100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN |
| LP2981-29YZUR | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Crimp; Body Material:Aluminum; Series:PT00; No. of Contacts:4; Connector Shell Size:8; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| LP2981-30YZUR | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Crimp; Body Material:Aluminum; Series:PT00; No. of Contacts:4; Connector Shell Size:8; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| LP2981-32YZUR | 100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2981-28DBVR | 功能描述:低壓差穩(wěn)壓器 - LDO 100-mA 1.25% Tolerance 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(dòng)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 |
| LP2981-28DBVRE4 | 功能描述:低壓差穩(wěn)壓器 - LDO 100-mA 1.25% Tolerance 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(dòng)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 |
| LP2981-28DBVRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Sgl Output 100mA Fixed(2.8V) Shutdown 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(dòng)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 |
| LP2981-28DBVT | 功能描述:低壓差穩(wěn)壓器 - LDO 100-mA 1.25% Tolerance 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(dòng)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 |
| LP2981-28DBVTE4 | 功能描述:低壓差穩(wěn)壓器 - LDO 100-mA 1.25% Tolerance 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(dòng)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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