參數(shù)資料
型號(hào)： LM2574-12MDC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
封裝： DIE
文件頁數(shù)： 28/33頁
文件大小： 814K
代理商： LM2574-12MDC
LM2574-12, LM2574HV-12
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range.
Symbol
Parameter
Conditions
LM2574-12
Units
(Limits)
LM2574HV-12
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 25V, ILOAD = 100 mA
12
V
11.76
V(Min)
12.24
V(Max)
V
OUT
Output Voltage
15V
≤ V
IN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
12
V
LM2574
11.52/11.40
V(Min)
12.48/12.60
V(Max)
V
OUT
Output Voltage
15V
≤ V
IN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
12
LM2574HV
11.52/11.40
V(Min)
12.54/12.66
V(Max)
η
Efficiency
V
IN = 15V, ILOAD = 0.5A
88
%
LM2574-15, LM2574HV-15
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range.
Symbol
Parameter
Conditions
LM2574-15
Units
(Limits)
LM2574HV-15
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
OUT
Output Voltage
V
IN = 30V, ILOAD = 100 mA
15
V
14.70
V(Min)
15.30
V(Max)
V
OUT
Output Voltage
18V
≤ V
IN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A
15
V
LM2574
14.40/14.25
V(Min)
15.60/15.75
V(Max)
V
OUT
Output Voltage
18V
≤ V
IN ≤ 60V, 0.1A ≤ ILOAD ≤ 0.5A
15
LM2574HV
14.40/14.25
V(Min)
15.68/15.83
V(Max)
η
Efficiency
V
IN = 18V, ILOAD = 0.5A
88
%
LM2574-ADJ, LM2574HV-ADJ
Electrical Characteristics
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range. Unless otherwise specified, V
IN = 12V, ILOAD = 100 mA.
Symbol
Parameter
Conditions
LM2574-ADJ
Units
(Limits)
LM2574HV-ADJ
Typ
Limit
(Note 2)
SYSTEM PARAMETERS (Note 3) Test Circuit
Figure 2
V
FB
Feedback Voltage
V
IN = 12V, ILOAD = 100 mA
1.230
V
1.217
V(Min)
1.243
V(Max)
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參數(shù)描述
LM2574-12YN 功能描述:直流/直流開關(guān)調(diào)節(jié)器 0.5A Step-Down SMPS Regulator (Lead Free) 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
LM2574-15 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:EASY SWITCHERE⑩ 0.5 A STEP-DOWN VOLTAGE REGULATOR
LM2574-15BN 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller
LM2574-15BWM 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller
LM2574-3.3 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:EASY SWITCHERE⑩ 0.5 A STEP-DOWN VOLTAGE REGULATOR
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