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參數資料
| 型號： | LM2925 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩壓器的反向電流保護 |
| 文件頁數： | 2/8頁 |
| 文件大小： | 223K |
| 代理商： | LM2925 |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage
Operating Range
Overvoltage Protection
26V
60V
Internal Power Dissipation (Note 2)
Operating Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Lead Temperature
(Soldering, 10 seconds)
ESD rating is to be determined
Internally Limited
40C to + 125C
150C
65C to + 150C
260C
V
Electrical Characteristics
V
IN
= 14V, C2 = 10 μf, I
O
= 500 mA, T
J
= 25C (Note 4) (unless otherwise specified)
Parameter
Conditions
Min
Typ
Max
Units
(Note 3)
Output Voltage
6V
≤
V
IN
≤
26V, I
O
≤
500 mA,
40C
≤
T
J
≤
+125C
9V
≤
V
IN
≤
16V, I
O
= 5 mA
6V
≤
V
IN
≤
26V, I
O
= 5 mA
5 mA
≤
I
O
≤
500 mA
500 mA
DC
and 10 mArms,
100 Hz-10 kHz
I
O
≤
10 mA
I
O
= 500 mA
I
O
= 750 mA
10 Hz-100 kHz
V
4.75
5.00
4
10
10
200
5.25
25
50
50
Line Regulation
mV
mV
mV
m
Load Regulation
Output Impedance
Quiescent Current
3
mA
mA
mA
μVrms
mV/1000 hr
dB
V
V
A
V
40
90
100
20
66
0.45
0.82
1.2
31
100
Output Noise Voltage
Long Term Stability
Ripple Rejection
Dropout Voltage
f
o
= 120 Hz
I
O
= 500 mA
I
O
= 750 mA
0.6
Current Limit
Maximum Operational
Input Voltage
Maximum Line Transient
Reverse Polarity Input
Voltage, DC
Reverse Polarity Input
Voltage, Transient
0.75
26
V
O
≤
5.5V
V
O
≥
0.6V, 10
Load
60
15
70
30
V
V
1% Duty Cycle,
τ ≤
100 ms,
10
Load
50
80
V
Reset Output
Electrical Characteristics
V
IN
= 14V, C3 = 0.1 μF, T
A
= 25C (Note 4) (unless otherwise specified)
Parameter
Conditions
Min
Typ
Max
Units
(Note 3)
Reset Voltage
Output Low
Output High
Reset Internal Pull-up Resistor
Reset Output Current Limit
V
OUT
Threshold
Delay Time
I
SINK
= 1.6 mA, V
IN
= 35V
I
SOURCE
= 0
0.3
5.0
30
5
4.5
12
250
12
0.6
5.5
V
V
k
mA
V
ms
ms
s
4.5
V
RESET
= 1.2 V
C
3
= .005 μF
C
3
= 0.1 μF
C
3
= 4.7 μF tantalum
150
300
www.national.com
2
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