參數(shù)資料
型號(hào)： LM2577S-ADJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SIMPLE SWITCHER Step-Up Voltage Regulator
中文描述： 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PSSO5
封裝： TO-263, 5 PIN
文件頁數(shù)： 3/27頁
文件大小： 889K
代理商： LM2577S-ADJ
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2577S-ADJ/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 STEP-UP VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM2577S-ADJ/NOPB 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu
LM2577SX-12 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM2577SX-12/NOPB 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM2577SX-15 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller
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