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參數(shù)資料
| 型號： | LM2984 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Microprocessor Power Supply System |
| 中文描述： | 微機電源系統(tǒng) |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 398K |
| 代理商： | LM2984 |
Electrical Characteristics
(Continued)
V
= 14V, I
= 5 mA, C
buf
= 10 μF, unless otherwise indicated.
Boldface
type refers to limits over the entire operating tem-
perature range, 40C
≤
T
A
≤
+125C, all other limits are for T
A
= T
j
= 25C (Note 8) .
Parameter
Conditions
Typical
Limit
(Note 4)
Units
V
buffer
(Pin 10)
Output Noise Voltage
Long Term Stability
Ripple Rejection
Dropout Voltage
Current Limit
Maximum Operational
Input Voltage
Maximum Line
Transient
Reverse Polarity
Input Voltage DC
Reverse Polarity Input
Voltage Transient
10 Hz–100 kHz, I
OUT
= 100 mA
100
20
70
0.35
0.23
32
μV
mV/1000 hr
dB
min
V
max
A
min
V
min
f
o
= 120 Hz
I
buf
= 100 mA
60/
50
0.50/
0.80
0.15/
0.15
26/
26
Continuous DC
V
buf
≤
6V, R
buf
= 100
,
T
≤
100 ms
V
buf
≥
0.6V, R
buf
= 100
65
60/
60
V
min
30
15/
15
V
min
T
≤
100 ms, R
buf
= 100
55
35/
35
V
min
Electrical Characteristics
V
= 14V, I
= 1 mA, C
stby
= 10 μF, unless otherwise indicated.
Boldface
type refers to limits over the entire operating tem-
perature range, 40C
≤
T
A
≤
+125C, all other limits are for T
A
= T
j
= 25C (Note 8) .
Parameter
Conditions
Typical
Limit
(Note 4)
Units
V
standby
(Pin 9)
Output Voltage
1 mA
≤
I
O
≤
7.5 mA
6V
≤
V
IN
≤
26V
9V
≤
V
IN
≤
16V
7V
≤
V
IN
≤
26V
0.5 mA
≤
I
OUT
≤
7.5 mA
5 mA
dc
and 1 mA
rms
, f
o
= 120 Hz
I
stby
= 7.5 mA
I
stby
= 2 mA
10 Hz–100 kHz, I
stby
= 1 mA
5.00
4.85/
4.75
5.15/
5.25
25/
25
50/
50
50/
50
V
min
V
max
mV
max
mV
max
mV
max
mA
max
mA
max
μV
mV/1000 hr
dB
min
V
max
V
max
mA
min
V
min
Line Regulation
2
5
6
Load Regulation
Output Impedance
Quiescent Current
0.9
1.2
0.9
100
20
70
0.26
0.38
15
65
2.0/
4.0
1.5/
4.0
Output Noise Voltage
Long Term Stability
Ripple Rejection
Dropout Voltage
f
o
= 120 Hz
I
stby
= 1 mA
I
stby
= 7.5 mA
60/
50
0.50/
0.60
0.60/
0.70
12/
12
60/
60
Current Limit
Maximum Operational
Input Voltage
Maximum Line
Transient
Reverse Polarity
Input Voltage DC
Reverse Polarity Input
Voltage Transient
4.5V
≤
V
stby
≤
6V,
R
stby
= 1000
V
stby
≤
6V, T
≤
100 ms,
R
stby
= 1000
V
stby
≥
0.6V,
R
stby
= 1000
T
≤
100 ms, R
stby
= 1000
65
60/
60
V
min
30
15/
15
V
min
55
35/
35
V
min
3
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