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參數(shù)資料
| 型號(hào)： | LM3940 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 1.25A High Current Low Dropout |
| 中文描述： | 1.25A的高電流低壓差 |
| 文件頁(yè)數(shù)： | 2/3頁(yè) |
| 文件大?。?/td> | 145K |
| 代理商： | LM3940 |
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556 www.baylinear.com
LM3940
ABSOLUTE MAXIMUM RATINGS
Lead Temp. (Soldering, 5 Seconds).................................260°C
Storage Temperature Range.............................. -65° to +150°C
Operating Junction Temperature Range
LM3940 Control Section........................... -45°C +125°C
LM3940 Power Transistor..........................-45°C +150°C
ELECTRICAL CHARACTERISTICS
I
OUT
= 5mA, V
IN
=V
OUT
+ 1V, I
l
= 1250mA, C
L
= 10
μ
F. Ta=25
°
C, unless otherwise specified.
PARAMETER
CONDITIONS
Input Voltage........................................................26V
Maximum Output Current....................................3.5A
Input Supply Voltage (Survival)..........-20V to +60V
Typ
LM3940
Min Max
3.267
3.234
4.95
4.90
Units
Output Voltage
5mA
≤
I
L
≤
1.25A
5mA
≤
I
L
≤
1.25A
I
O
= 5mA, 4.5V
≤
V
IN
≤
5.5V
50mA
≤
I
OUT
≤
1.25 A
I
O
= 5mA
I
O
= 1000mA
I
O
= 1250mA
I
O
= 5mA, V
IN
= V
OUT
, +1V
I
O
= 1000mA, V
IN
= V
OUT
, +1V
I
O
= 1.25A
R
L
= 0
3.3
3.3
5.0
5.0
20
35
3.330
3.366
5.05
5.10
40
50
V
Output Voltage
V
Line Regulation
Load Regulation
mV
mV
120
180
400
600
Dropout Voltage
500
800
mV
Quiescent Current
240
22
35
350
35
70
μ
A
mA
Short Circuit Current
1.7
1.2
A
Current Limit
Output Noise Voltage
(10Hz to 100kHz)
I
L
= 100mA
BLOCK DIAGRAM
V
OUT
= 0V (Note 4)
C
L
= 10
μ
F
C
L
= 33
μ
F
1.7
1.5
A
400
260
μ
V
RMS
相關(guān)PDF資料 |
PDF描述 |
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| LM3940D | 1.25A High Current Low Dropout |
| LM3940J | 1.25A High Current Low Dropout |
| LM3940N | 1.25A High Current Low Dropout |
| LM3940S | 1.25A High Current Low Dropout |
| LM3940T | 1.25A High Current Low Dropout |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3940_03 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1A Low Dropout Regulator for 5V to 3.3V Conversion |
| LM3940D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1.25A High Current Low Dropout |
| LM3940IMP-3.3 | 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(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 |
| LM3940IMP-3.3 | 制造商:Texas Instruments 功能描述:V REG LDO +3.3V 3940 SOT-223-3 |
| LM3940IMP-3.3/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO 1A LDO REG 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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