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参数资料
| 型号： | LM2585-12MDC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 7 A SWITCHING REGULATOR, 125 kHz SWITCHING FREQ-MAX, UUC |
| 封装： | DIE |
| 文件页数： | 24/29页 |
| 文件大小： | 708K |
| 代理商： | LM2585-12MDC |
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Electrical Characteristics (All Versions)
Symbol
Parameters
Conditions
Typical
Min
Max
Units
COMMON DEVICE PARAMETERS for all versions (Note 5)
I
S
Input Supply
(Switch Off)
11
15.5/16.5
mA
Current
(Note 8)
I
SWITCH = 1.8A
50
100/115
mA
V
UV
Input Supply
R
LOAD = 100
3.30
3.05
3.75
V
Undervoltage
Lockout
f
O
Oscillator Frequency
Measured at Switch Pin
R
LOAD = 100
100
85/75
115/125
kHz
V
COMP = 1.0V
f
SC
Short-Circuit
Measured at Switch Pin
Frequency
R
LOAD = 100
25
kHz
V
FEEDBACK = 1.15V
V
EAO
Error Amplifier
Upper Limit
2.8
2.6/2.4
V
Output Swing
(Note 7)
Lower Limit
0.25
0.40/0.55
V
(Note 8)
I
EAO
Error Amp
(Note 9)
Output Current
165
110/70
260/320
A
(Source or Sink)
I
SS
Soft Start Current
V
FEEDBACK = 0.92V
11.0
8.0/7.0
17.0/19.0
A
V
COMP = 1.0V
D
Maximum Duty
R
LOAD = 100
98
93/90
%
Cycle
(Note 7)
I
L
Switch Leakage
Switch Off
15
300/600
A
Current
V
SWITCH = 60V
V
SUS
Switch Sustaining
dV/dT = 1.5V/ns
65
V
Voltage
V
SAT
Switch Saturation
I
SWITCH = 3.0A
0.45
0.65/0.9
V
Voltage
I
CL
NPN Switch
4.0
3.0
7.0
A
Current Limit
θ
JA
Thermal Resistance
T Package, Junction to
Ambient (Note 10)
65
θ
JA
T Package, Junction to
Ambient (Note 11)
45
θ
JC
T Package, Junction to
Case
2
θ
JA
S Package, Junction to
Ambient (Note 12)
56
C/W
θ
JA
S Package, Junction to
Ambient (Note 13)
35
θ
JA
S Package, Junction to
Ambient (Note 14)
26
θ
JC
S Package, Junction to
Case
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).
LM2585
www.national.com
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|---|---|
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2585S-12 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2585S-12/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2585S-3.3 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2585S-3.3/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2585S-5.0 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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