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參數(shù)資料
| 型號(hào)： | LM2597-12 |
| 英文描述： | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897.00 k) |
| 中文描述： | SIMPLE SWITCHER系列電源轉(zhuǎn)換器150千赫0.5A的降壓穩(wěn)壓器的功能（897.00十一） |
| 文件頁數(shù)： | 4/28頁 |
| 文件大?。?/td> | 739K |
| 代理商： | LM2597-12 |
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LM2594/LM2594HV-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
LM2594/LM2594HV-ADJ
Typ
(Note 3)
Units
(Limits)
Limit
(Note 4)
SYSTEM PARAMETERS
(Note 5) Test Circuit Figure 1
V
FB
Feedback Voltage
4.5V
≤
V
IN
≤
V
INmax
, 0.1A
≤
I
LOAD
≤
0.5A
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, 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
LM2594/LM2594HV-XX
Typ
(Note 3)
Units
(Limits)
Limit
(Note 4)
DEVICE PARAMETERS
I
b
Feedback Bias Current
f
O
Oscillator Frequency
Adjustable Version Only, VFB = 1.3V
(Note 6)
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 (Note 7) (Note 8)
0.9
1.1/
1.2
DC
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Current Limit
(Note 8)
(Note 9)
Peak Current, (Note 7) (Note 8)
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
mA(max)
μA
μA(max)
μA(max)
C/W
I
L
Output Leakage Current
(Note 7) (Note 9) (Note 10)
Output = 0V
Output = 1V
2
15
I
Q
Quiescent Current
(Note 9)
5
10
I
STBY
Standby Quiescent
Current
ON/OFF pin = 5V (OFF)
LM2594
LM2594HV
N Package, Junction to Ambient (Note 11)
M Package, Junction to Ambient (Note 11)
(Note 10)
85
200/
250
250/
300
140
95
150
θ
JA
Thermal Resistance
ON/OFF CONTROL
Test Circuit Figure 1
ON /OFF Pin Logic Input
V
IH
Threshold Voltage
V
IL
I
H
ON /OFF Pin
Input Current
I
L
1.3
V
Low (Regulator ON)
High (Regulator OFF)
V
LOGIC
= 2.5V (Regulator OFF)
0.6
2.0
V(max)
V(min)
μA
μA(max)
μA
μA(max)
5
15
V
LOGIC
= 0.5V (Regulator ON)
0.02
5
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
L
www.national.com
4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2597-3.3 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897.00 k) |
| LM2597-5.0 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897.00 k) |
| LM2597HV-12 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897.00 k) |
| LM2597HV-3.3 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897.00 k) |
| LM2597HV-5.0 | SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator with Features(897.00 k) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2597HVM-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 |
| LM2597HVM-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 |
| LM2597HVM-12/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| LM2597HVM-3.3 | 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 |
| LM2597HVM-3.3/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 |
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