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參數(shù)資料
| 型號： | LP2978AIM5X-3.8 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | SUBMINIATURE PC BOARD RELAY |
| 中文描述： | 3.8 V FIXED POSITIVE LDO REGULATOR, 0.225 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, SOP-5 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 102K |
| 代理商： | LP2978AIM5X-3.8 |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Operating Junction Temperature Range
Lead Temp. (Soldering, 5 sec.)
ESD Rating (Note 2)
Power Dissipation (Note 3)
65C to +150C
40C to +125C
260C
2 kV
Internally Limited
Input Supply Voltage (Survival)
Input Supply Voltage (Operating)
Shutdown Input Voltage (Survival)
Output Voltage (Survival, (Note 4))
I
OUT
(Survival)
0.3V to +16V
2.5V to +16V
0.3V to +16V
0.3V to +9V
Short Circuit
Protected
0.3V to +16V
Input-Output Voltage (Survival,
(Note 5))
Electrical Characteristics
Limits in standard typeface are for T
= 25C. and limits in
boldface type
apply over the full operating temperature range. Un-
less otherwise specified: V
IN
= V
O
(NOM) + 1V, I
L
= 1 mA, C
IN
= 1 μF, C
OUT
= 4.7 μF, V
ON/OFF
= 2V.
Symbol
Parameter
Conditions
Typ
LP2978AI-X.X
(Note 6)
Min
1.0
1.5
2.5
LP2978I-X.X
(Note 6)
Min
1.5
2.5
3.5
Units
Max
1.0
1.5
2.5
0.014
Max
1.5
2.5
3.5
0.014
V
O
Output Voltage
Tolerance
I
L
= 1 mA
1 mA
≤
I
L
≤
50 mA
%V
NOM
Output Voltage
V
O
(NOM)+1V
≤
V
IN
≤
16V
0.007
%/V
Line Regulation
0.032
0.032
V
IN
–V
O
Dropout Voltage
(Note 7)
I
L
= 0
1
3
5
10
15
60
90
150
225
95
125
110
170
220
400
600
1000
0.8
2
3
5
10
15
60
90
150
225
95
125
110
170
220
400
600
1000
0.8
2
mV
I
L
= 1 mA
7
I
L
= 10 mA
40
I
L
= 50 mA
120
I
GND
Ground Pin Current
I
L
= 0
65
μA
I
L
= 1 mA
75
I
L
= 10 mA
120
I
L
= 50 mA
350
V
ON/OFF
<
0.3V
V
ON/OFF
<
0.15V
High = O/P ON
Low = O/P OFF
V
ON/OFF
= 0
V
ON/OFF
= 5V
BW = 300 Hz to 50 kHz,
C
OUT
= 10 μF
C
BYPASS
= 10 nF
f = 1 kHz, C
BYPASS
= 10 nF
0.01
0.05
1.4
0.55
0.01
5
V
ON/OFF
ON/OFF Input Voltage
(Note 8)
1.6
1.6
V
0.15
2
15
0.15
2
15
I
ON/OFF
ON/OFF Input Current
μA
e
n
Output Noise
Voltage (RMS)
30
μV
Ripple Rejection
45
dB
C
OUT
= 10 μF
I
O
(SC)
I
O
(PK)
Short Circuit Current
Peak Output Current
R
L
= 0 (Steady State)
V
OUT
≥
V
o
(NOM) 5%
400
350
mA
mA
Note 1:
“Absolute Maximum Ratings” indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its rated operating conditions.
Note 2:
The ESD rating of pins 3 and 4 is 1 kV.
L
www.national.com
3
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