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參數(shù)資料
| 型號： | LM1575J-CAD/883 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, CDIP16 |
| 封裝： | CERDIP-16 |
| 文件頁數(shù)： | 27/30頁 |
| 文件大?。?/td> | 676K |
| 代理商： | LM1575J-CAD/883 |
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LM1575-ADJ, LM2575-ADJ, LM2575HV-ADJ
Electrical Characteristics (Continued)
Specifications with standard type face are for T
J= 25C, and those with boldface type apply over full Operating Temperature
Range.
Symbol
Parameter
Conditions
Typ
LM1575-ADJ
LM2575-ADJ
Units
(Limits)
LM2575HV-ADJ
Limit
(Note 2)
(Note 3)
SYSTEM PARAMETERS (Note 4) Test Circuit
Figure 2
V
OUT
Feedback Voltage
0.2A
≤ I
LOAD ≤ 1A,
1.230
V
LM1575/LM2575
8V
≤ V
IN ≤ 40V
1.205/1.193
1.193/1.180
V(Min)
V
OUT = 5V, Circuit of Figure 2
1.255/1.267
1.267/1.280
V(Max)
V
OUT
Feedback Voltage
0.2A
≤ I
LOAD ≤ 1A,
1.230
V
LM2575HV
8V
≤ V
IN ≤ 60V
1.205/1.193
1.193/1.180
V(Min)
V
OUT = 5V, Circuit of Figure 2
1.261/1.273
1.273/1.286
V(Max)
η
Efficiency
V
IN = 12V, ILOAD = 1A, VOUT = 5V
77
%
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Temperature
Range. Unless otherwise specified, V
IN = 12V for the 3.3V, 5V, and Adjustable version, VIN = 25V for the 12V version, and VIN
= 30V for the 15V version. I
LOAD = 200 mA.
Symbol
Parameter
Conditions
Typ
LM1575-XX
LM2575-XX
Units
(Limits)
LM2575HV-XX
Limit
(Note 2)
(Note 3)
DEVICE PARAMETERS
I
b
Feedback Bias
Current
V
OUT = 5V (Adjustable Version Only)
50
100/500
nA
f
O
Oscillator Frequency
(Note 13)
52
kHz
47/43
47/42
kHz(Min)
58/62
58/63
kHz(Max)
V
SAT
Saturation Voltage
I
OUT = 1A (Note 5)
0.9
V
1.2/1.4
V(Max)
DC
Max Duty Cycle (ON)
(Note 6)
98
%
93
%(Min)
I
CL
Current Limit
Peak Current (Notes 5, 13)
2.2
A
1.7/1.3
A(Min)
3.0/3.2
A(Max)
I
L
Output Leakage
(Notes 7, 8)
Output = 0V
2
mA(Max)
Current
Output = 1V
7.5
mA
Output = 1V
30
mA(Max)
I
Q
Quiescent Current
(Note 7)
5
mA
10/12
10
mA(Max)
I
STBY
Standby Quiescent
ON /OFF Pin = 5V (OFF)
50
A
Current
200/500
200
A(Max)
θ
JA
Thermal Resistance
T Package, Junction to Ambient (Note 9)
65
θ
JA
T Package, Junction to Ambient (Note 10)
45
C/W
θ
JC
T Package, Junction to Case
2
θ
JA
N Package, Junction to Ambient (Note 11)
85
θ
JA
M Package, Junction to Ambient (Note 11)
100
θ
JA
S Package, Junction to Ambient (Note 12)
37
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