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參數(shù)資料
| 型號(hào)： | LM2576T-ADJFLOWLF03 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封裝： | ROHS COMPLIANT, TO-220, 5 PIN |
| 文件頁(yè)數(shù)： | 20/24頁(yè) |
| 文件大?。?/td> | 750K |
| 代理商： | LM2576T-ADJFLOWLF03 |
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LM2576-ADJ, LM2576HV-ADJ
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Temperature
Range.
Symbol
Parameter
Conditions
LM2576-ADJ
Units
(Limits)
LM2576HV-ADJ
Typ
Limit
V
OUT
Feedback Voltage
V
IN = 12V, ILOAD = 0.5A
1.230
V
OUT = 5V,
1.217
V(Min)
Circuit of Figure 2
1.243
V(Max)
V
OUT
Feedback Voltage
0.5A
≤ I
LOAD
≤ 3A,
1.230
V
LM2576
8V
≤ V
IN
≤ 40V
1.193/1.180
V(Min)
V
OUT = 5V, Circuit of Figure 2
1.267/1.280
V(Max)
V
OUT
Feedback Voltage
0.5A
≤ I
LOAD
≤ 3A,
1.230
V
LM2576HV
8V
≤ V
IN
≤ 60V
1.193/1.180
V(Min)
V
OUT = 5V, Circuit of Figure 2
1.273/1.286
V(Max)
η
Efficiency
V
IN = 12V, ILOAD = 3A, 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 = 500 mA.
Symbol
Parameter
Conditions
LM2576-XX
Units
(Limits)
LM2576HV-XX
Typ
Limit
DEVICE PARAMETERS
I
b
Feedback Bias Current
V
OUT = 5V (Adjustable Version Only)
50
100/500
nA
f
O
Oscillator Frequency
52
kHz
47/42
kHz
(Min)
58/63
kHz
(Max)
V
SAT
Saturation Voltage
I
OUT = 3A (Note 4)
1.4
V
1.8/2.0
V(Max)
DC
Max Duty Cycle (ON)
98
%
93
%(Min)
I
CL
Current Limit
(Notes 4, 11)
5.8
A
4.2/3.5
A(Min)
6.9/7.5
A(Max)
I
L
Output Leakage Current
(Notes 6, 7):
Output = 0V
2
mA(Max)
Output = 1V
7.5
mA
Output = 1V
30
mA(Max)
I
Q
Quiescent Current
5
mA
10
mA(Max)
I
STBY
Standby Quiescent
ON /OFF Pin = 5V (OFF)
50
A
Current
200
A(Max)
LM2576/LM2576HV
www.national.com
5
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PDF描述 |
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| LM2576HVT-15/LB03 | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5 |
| LM2576TV-005G | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PZFM5 |
| LM2576T-015G | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5 |
| LM2577M-12/NOPB | 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PDSO24 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2576T-ADJG | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3A 1.23-37V ADJ Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2576T-ADJ-H | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-ADJLB03 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-ADJ-V | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576TV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3.0A, 15V, Step-Down Switching Regulator |
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