參數(shù)資料
型號(hào)： LM2597M-5.0
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator, with Features
中文描述： 1.4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PDSO8
封裝： PLASTIC, SOIC-8
文件頁(yè)數(shù)： 3/34頁(yè)
文件大?。?/td> 900K
代理商： LM2597M-5.0
LM2597/LM2597HV-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.
V
INmax
=40V for the LM2597 and 60V for the LM2597HV
Symbol
Parameter
Conditions
LM2597/LM2597HV-12
Typ
(Note 4)
Units
(Limits)
Limit
(Note 5)
SYSTEM PARAMETERS
(Note 6) Test Circuit Figure 12
V
OUT
Output Voltage
15V
≤
V
IN
≤
V
INmax
, 0.1A
≤
I
LOAD
≤
0.5A
12
V
11.52/
11.40
12.48/
12.60
V(min)
V(max)
%
η
Efficiency
V
IN
= 25V, I
LOAD
= 0.5A
88
LM2597/LM2597HV-ADJ
Electrical Characteristics
Specifications with standard type face are for T
= 25C, and those with
boldface type
apply over
full Operating Tempera-
ture Range.
V
INmax
=40V for the LM2597 and 60V for the LM2597HV
Symbol
Parameter
Conditions
LM2597/LM2597HV-ADJ
Typ
(Note 4)
Units
(Limits)
Limit
(Note 5)
SYSTEM PARAMETERS
(Note 6) Test Circuit Figure 12
V
FB
Feedback Voltage
4.5V
≤
V
IN
≤
V
INmax
, 0.1A
≤
I
LOAD
≤
0.5A
V
OUT
programmed for 3V. Circuit of Figure 12
1.230
V
1.193/
1.180
1.267/
1.280
V(min)
V(max)
%
η
Efficiency
V
IN
= 12V, V
OUT
= 3V, I
LOAD
= 0.5A
80
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
= 25C, and those with
boldface type
apply over
full Operating Tempera-
ture Range.
Unless otherwise specified, V
IN
= 12V for the 3.3V, 5V, and Adjustable version and V
IN
= 24V for the 12V ver-
sion. I
LOAD
= 100 mA.
Symbol
Parameter
Conditions
LM2597/LM2597HV-XX
Typ
(Note 4)
Units
(Limits)
Limit
(Note 5)
DEVICE PARAMETERS
I
b
Feedback Bias Current
f
O
Oscillator Frequency
Adjustable Version Only, V
FB
= 1.235V
(Note 7)
10
150
50/
100
nA
kHz
127/
110
173/
173
kHz(min)
kHz(max)
V
V(max)
%
V
SAT
Saturation Voltage
I
OUT
= 0.5A (Notes 8 and 9)
0.9
1.1/
1.2
DC
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Current Limit
(Note 9)
(Note 10)
Peak Current, (Notes 8 and 9)
100
0
0.8
I
CL
A
0.65/
0.58
1.3/
1.4
50
A(min)
A(max)
μA(max)
mA
mA(max)
mA
I
L
Output Leakage Current
(Notes 8, 10 and 11)
Output = 1V
Output = 0V
2
15
I
Q
Operating Quiescent
SD /SS Pin Open, V
BS
Pin Open(Note 10)
5
L
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相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2597M50 制造商:Texas Instruments 功能描述:SWITCHING REG 0.5A 5.0V SMD 2597
LM2597M-ADJ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2597M-ADJ 制造商:Texas Instruments 功能描述:SWITCHING REG 0.5A ADJ SMD 2597
LM2597M-ADJ/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 150KHZ 0.5A STEP- DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2597MX-12 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
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