參數資料
型號： LM2595
廠商： National Semiconductor Corporation
英文描述： Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85
中文描述： SIMPLE SWITCHER系列電源轉換器150千赫1A步降穩(wěn)壓器
文件頁數： 4/29頁
文件大?。?/td> 935K
代理商： LM2595
LM2595-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
.
Symbol
Parameter
Conditions
LM2595-ADJ
Units
(Limits)
Typ
Limit
(Note 4)
(Note 3)
SYSTEM PARAMETERS
(Note 5) Test Circuit Figure 1
V
FB
Feedback Voltage
4.5V
≤
V
IN
≤
40V, 0.1A
≤
I
LOAD
≤
1A
V
OUT
programmed for 3V. Circuit of Figure 1
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
= 1A
78
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
= 200 mA.
Symbol
Parameter
Conditions
LM2595-XX
Typ
(Note 3)
Units
(Limits)
Limit
(Note 4)
DEVICE PARAMETERS
I
b
Feedback Bias Current
Adjustable Version Only,V
FB
= 1.3V
10
nA
50/
100
nA (max)
kHz
kHz(min)
kHz(max)
V
V(max)
%
f
O
Oscillator Frequency
(Note 6)
150
127/
110
173/
173
V
SAT
Saturation Voltage
I
OUT
= 1A (Notes 7, 8)
1
1.2/
1.3
DC
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Current Limit
(Note 8)
(Note 9)
Peak Current (Notes 7, 8)
100
0
1.5
I
CL
A
1.2/
1.15
2.4/
2.6
50
A(min)
A(max)
μA(max)
mA
mA(max)
mA
mA(max)
μA
μA(max)
C/W
C/W
C/W
C/W
C/W
I
L
Output Leakage Current
Output = 0V
Output = 1V
(Notes 7, 9) and (Note 10)
2
15
I
Q
Quiescent Current
(Note 9)
5
10
I
STBY
Standby Quiescent
Current
Thermal Resistance
ON/OFF pin = 5V (OFF)
(Note 10)
85
200/
250
θ
JC
θ
JA
θ
JA
θ
JA
θ
JA
ON/OFF CONTROL
Test Circuit Figure 1
ON /OFF Pin Logic Input
V
IH
Threshold Voltage
V
IL
TO-220 or TO-263 Package, Junction to Case
TO-220 Package, Junction to Ambient (Note 11)
TO-263 Package, Junction to Ambient (Note 12)
TO-263 Package, Junction to Ambient (Note 13)
TO-263 Package, Junction to Ambient (Note 14)
2
50
50
30
20
1.3
V
Low (Regulator ON)
High (Regulator OFF)
0.6
2.0
V(max)
V(min)
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相關代理商/技術參數
參數描述
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LM2595DSADJG 功能描述:直流/直流開關調節(jié)器 1A BUCK SW REG 150KHZ RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
LM2595DSADJR4G 功能描述:直流/直流開關調節(jié)器 1A BUCK SW REG 150KHZ RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
LM2595S12 制造商:Texas Instruments 功能描述:SWITCHING REG, 1A 12V, SMD, 2595 制造商:Texas Instruments 功能描述:SWITCHING REG, 1A 12V, SMD, 2595; Primary Input Voltage:24V; No. of Outputs:1; Output Voltage:12V; Output Current:1A; Voltage Regulator Case Style:TO-263; No. of Pins:5; Operating Temperature Min:-25C; Operating Temperature ;RoHS Compliant: Yes
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