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參數(shù)資料
| 型號： | LM2585S-5.0 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER 3A Flyback Regulator |
| 中文描述： | 7 A SWITCHING REGULATOR, 125 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封裝： | TO-263, 5 PIN |
| 文件頁數(shù)： | 4/25頁 |
| 文件大?。?/td> | 627K |
| 代理商： | LM2585S-5.0 |
Electrical Characteristics (All Versions)
Symbol
COMMON DEVICE PARAMETERS
for all versions (Note 5)
I
S
Input Supply
Current
Parameters
Conditions
Typical
Min
Max
Units
(Switch Off)
(Note 8)
I
SWITCH
= 1.8A
R
LOAD
= 100
11
15.5/
16.5
mA
50
3.30
100/
115
3.75
mA
V
V
UV
Input Supply
Undervoltage
Lockout
Oscillator Frequency
3.05
f
O
Measured at Switch Pin
R
LOAD
= 100
V
COMP
= 1.0V
Measured at Switch Pin
R
LOAD
= 100
V
FEEDBACK
= 1.15V
Upper Limit
(Note 7)
Lower Limit
(Note 8)
(Note 9)
100
85/
75
115/
125
kHz
f
SC
Short-Circuit
Frequency
25
kHz
V
EAO
Error Amplifier
Output Swing
2.8
2.6/
2.4
V
0.25
0.40/
0.55
V
I
EAO
Error Amp
Output Current
(Source or Sink)
Soft Start Current
165
110/
70
260/
320
μA
I
SS
V
FEEDBACK
= 0.92V
V
COMP
= 1.0V
R
LOAD
= 100
(Note 7)
Switch Off
V
SWITCH
= 60V
dV/dT = 1.5V/ns
11.0
8.0/
7.0
17.0/
19.0
μA
D
Maximum Duty
Cycle
Switch Leakage
Current
Switch Sustaining
Voltage
Switch Saturation
Voltage
NPN Switch
Current Limit
Thermal Resistance
98
93/
90
%
I
L
15
300/
600
μA
V
SUS
65
V
V
SAT
I
SWITCH
= 3.0A
0.45
0.65/
0.9
V
I
CL
4.0
3.0
7.0
A
θ
JA
T Package, Junction to
Ambient (Note 10)
T Package, Junction to
Ambient (Note 11)
T Package, Junction to
Case
S Package, Junction to
Ambient (Note 12)
S Package, Junction to
Ambient (Note 13)
S Package, Junction to
Ambient (Note 14)
S Package, Junction to
Case
65
θ
JA
45
θ
JC
2
θ
JA
56
C/W
θ
JA
35
θ
JA
26
θ
JC
2
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions the device is intended to
be functional, but device parameter specifications may not be guaranteed under these conditions. For guaranteed specifications and test conditions, see the Electrical
Characteristics.
Note 2:
Note that switch current and output current are not identical in a step-up regulator. Output current cannot be internally limited when the LM2585 is used as
a step-up regulator. To prevent damage to the switch, the output current must be externally limited to 3A. However, output current is internally limited when the
LM2585 is used as a flyback regulator (see the Application Hints section for more information).
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2585S-ADJ | 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 |
| LM2585S-ADJ/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 3-AMP FLYBACK REG 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 |
| LM2585S-ADJ/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| LM2585SX-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 |
| LM2585SX-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 |
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