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參數(shù)資料
| 型號(hào)： | LM1577K-12 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | SIMPLE SWITCHER-R Step-Up Voltage Regulator |
| 中文描述： | SIMPLE SWITCHER系列- R的升壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 3/27頁(yè) |
| 文件大?。?/td> | 870K |
| 代理商： | LM1577K-12 |
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Electrical Characteristics—LM1577-12, LM2577-12
(Continued)
Specifications with standard type face are for T
= 25C, and those in
bold type face
apply over full
Operating Temperature
Range
. Unless otherwise specified, V
IN
= 5V, and I
SWITCH
= 0.
LM1577-12
Limit
(Notes 3, 4)
LM2577-12
Limit
(Note 5)
Units
(Limits)
Symbol
Parameter
Conditions
Typical
DEVICE PARAMETERS
Error Amplifier
Output Swing
Upper Limit
V
FEEDBACK
= 10.0V
Lower Limit
V
FEEDBACK
= 15.0V
V
FEEDBACK
= 10.0V to 15.0V
V
COMP
= 1.0V
2.4
V
2.2/
2.0
2.2/
2.0
V(min)
V
V(max)
μA
μA(min)
μA(max)
μA
μA(min)
μA(max)
%
%(min)
A/V
0.3
0.40/
0.55
0.40/
0.55
Error Amplifier
Output Current
±
200
±
130/
±
90
±
300/
±
400
±
130/
±
90
±
300/
±
400
I
SS
Soft Start Current
V
FEEDBACK
= 10.0V
V
COMP
= 0V
5.0
2.5/
1.5
7.5/
9.5
2.5/
1.5
7.5/
9.5
D
Maximum Duty Cycle
V
COMP
= 1.5V
I
SWITCH
= 100 mA
95
93/
90
93/
90
Switch
Transconductance
12.5
I
L
Switch Leakage
Current
Switch Saturation
Voltage
NPN Switch
Current Limit
V
SWITCH
= 65V
V
FEEDBACK
= 15V (Switch Off)
I
SWITCH
= 2.0A
V
COMP
= 2.0V (Max Duty Cycle)
10
μA
300/
600
300/
600
μA(max)
V
V(max)
A
A(min)
A(max)
V
SAT
0.5
0.7/
0.9
0.7/
0.9
4.5
3.7/
3.0
5.3/
6.0
3.7/
3.0
5.3/
6.0
Electrical Characteristics—LM1577-15, LM2577-15
Specifications with standard type face are for T
= 25C, and those in
bold type face
apply over full
Operating Temperature
Range
. Unless otherwise specified, V
IN
= 5V, and I
SWITCH
= 0.
LM1577-15
Limit
(Notes 3, 4)
LM2577-15
Limit
(Note 5)
Units
(Limits)
Symbol
Parameter
Conditions
Typical
SYSTEM PARAMETERS
Circuit of Figure 2 (Note 6)
V
OUT
Output Voltage
V
IN
= 5V to 12V
I
LOAD
= 100 mA to 600 mA
(Note 3)
V
IN
= 3.5V to 12V
I
LOAD
= 300 mA
V
IN
= 5V
I
LOAD
= 100 mA to 600 mA
V
IN
= 5V, I
LOAD
= 600 mA
15.0
V
14.50/
14.25
15.50/
15.75
14.50/
14.25
15.50/
15.75
V(min)
V(max)
mV
Line Regulation
20
50/
100
50/
100
mV(max)
Load Regulation
20
50/
100
50/
100
mV
mV(max)
η
DEVICE PARAMETERS
I
S
Efficiency
80
%
Input Supply Current
V
FEEDBACK
= 18.0V
(Switch Off)
I
SWITCH
= 2.0A
V
COMP
= 2.0V
(Max Duty Cycle)
I
SWITCH
= 100 mA
7.5
mA
10.0/
14.0
10.0/
14.0
mA(max)
mA
mA(max)
25
50/
85
50/
85
V
UV
Input Supply
2.90
V
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| LM1577K-12/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER Step-Up Voltage Regulator |
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