參數(shù)資料
型號(hào)： LP2957AIT
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： 5V Low-Dropout Regulator for P Applications
中文描述： 5 V FIXED POSITIVE LDO REGULATOR, 0.8 V DROPOUT, PSFM5
封裝： BENT STAGGERED, TO-220, 5 PIN
文件頁(yè)數(shù)： 2/14頁(yè)
文件大?。?/td> 378K
代理商： LP2957AIT
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Junction
Temperature Range
Storage Temperature Range
40C to +125C
65C to +150C
Lead Temperature
(Soldering, 5 Seconds)
Power Dissipation (Note 2)
Input Supply Voltage
Shutdown Input
ESD Rating
260C
Internally Limited
20V to +30V
0.3V to +30V
2 kV
Electrical Characteristics
Limits in standard typeface are for T
J
= 25C, and limits in
boldface type
apply over the full operating temperature range. Un-
less otherwise specified: V
IN
= 6V, I
L
= 1 mA, C
L
= 2.2 μF, V
SD
= 3V.
Symbol
Parameter
Conditions
Typical
LP2957AI
Min
4.975
4.940
4.930
LP2957I
Min
4.950
4.900
4.880
Units
Max
5.025
5.060
5.070
Max
5.050
5.100
5.120
V
O
Output Voltage
(Note 9)
5.0
V
1 mA
≤
I
L
≤
250 mA
(Note 3)
5.0
Output Voltage
Temperature
Coefficient
Line Regulation
20
100
150
ppm/C
V
IN
= 6V to 30V
0.03
0.10
0.20
%
0.20
0.40
Load Regulation
I
L
= 1 mA to 250 mA
I
L
= 0.1 mA to 1 mA
(Note 4)
I
L
= 1 mA
0.04
0.16
0.20
0.20
0.30
%
V
IN
–V
O
Dropout Voltage
(Note 5)
60
100
150
300
420
400
520
600
800
200
230
2
2.5
6
8
28
33
180
200
230
250
100
150
300
420
400
520
600
800
200
230
2
2.5
6
8
28
33
180
200
230
250
mV
I
L
= 50 mA
240
I
L
= 100 mA
310
I
L
= 250 mA
470
I
GND
Ground Pin Current
(Note 6)
I
L
= 1 mA
150
μA
I
L
= 50 mA
1.1
mA
I
L
= 100 mA
3
I
L
= 250 mA
16
I
GND
Ground Pin Current
in Shutdown (Note 6)
Ground Pin Current
at Dropout (Note 6)
Off-State Output
Pulldown Current
Output Leakage
in Shutdown
Current Limit
I
L
= 0
V
SD
= 0.4V
V
IN
= 4.5V
I
L
= 0.1 mA
V
IN
= 5.3V
V
O
= 5V, V
SD
= 0.4V
I
(SD IN)
≥
1 μA
V
IN
= 30V, V
OUT
= 0V
R
L
= 1
130
μA
I
GND
180
μA
I
O
(Sink)
I
O
(Off)
I
LIMIT
50
30
20
30
20
mA
3
10
20
500
530
10
20
500
530
μA
400
mA
Thermal Regulation
(Note 7)
0.05
0.2
0.2
%/W
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP2957AIT/LB03 制造商:Texas Instruments 功能描述:LDO Regulator Pos 5V 0.25A 5-Pin(5+Tab) TO-220 Rail
LP2957AIT/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(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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2957IS 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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2957IS/NOPB 功能描述:低壓差穩(wěn)壓器 - LDO 5V Micropwr 2.4% 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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2957IS/NOPB 制造商:Texas Instruments 功能描述:Voltage Regulator IC
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