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参数资料
| 型号： | LM2576 |
| 厂商： | Semtech Corporation |
| 元件分类： | 开关稳压 |
| 英文描述： | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 射频放大器 |
| 文件页数： | 7/19页 |
| 文件大小： | 441K |
| 代理商： | LM2576 |
15
2001 Semtech Corp.
www.semtech.com
LM2575 & LM2576
POWER MANAGEMENT
5
7
5
2
M
L6
7
5
2
M
L
C
N
I
F
7
4F
0
1
1
D
A
3A
7
1
L
H
0
1H
8
6
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O
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,
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0
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,
6
I
T
U
O
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5
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5
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L6
7
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L
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4F
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1
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A
3A
7
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L
H
0
1H
8
6
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U
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7
Inverting buck/boost operation is a different topology of
operation than buck. This difference reduces the output
current capability of the device, in that the inductor must
supply all of the load current during the time the power
switch is off. Maximum output current is approximately:
)
2576
LM
(
V
1
2
5
.
3
I
IN
O
OUT
+
≈
)
2575
LM
(
V
1
2
3
.
1
I
IN
O
OUT
+
≈
Component stress requirements are very similar to the
buck with a few exceptions:
(1) catch diode breakdown V
BR must be greater than
V
IN + |VOUT|
(2) input capacitor is larger due to the increased peak
current during switch turn on. Power dissipation is
approximately:
IN
O
IN
SAT
IN
O
IN
O
D
V
02
.
0
V
1
I
V
P
+
+
+
≈
Please contact factory for additional assistance when
using the buck/boost topology.
Applications Information - Inverting Buck/Boost
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2576/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Easy Switcher? 3.0 A Step-Down Voltage Regulator |
| LM2576_05 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:52kHz Simple 3A Buck Regulator |
| LM2576_06 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:3.0 A, 15 V, Step−Down Switching Regulator |
| LM2576_11 | 制造商:HTC 制造商全称:HTC Korea TAEJIN Technology Co. 功能描述:3A, 52kHz, Step-Down Switching Regulator |
| LM2576_12 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:EASY SWITCHERER 3.0 A STEPa??DOWN VOLTAGE REGULATOR |
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