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参数资料
| 型号： | LM2575S-12T |
| 元件分类： | 稳压器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封装： | TO-263, 5 PIN |
| 文件页数： | 6/18页 |
| 文件大小： | 449K |
| 代理商： | LM2575S-12T |
1.0 & 3.0 AMP MINICONVERTER
SWITCHING REGULATORS
LM2575
LM2576
1998 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
April 7, 1998
14
Component stress requirement is very similar to the
buck with a few exceptions:
catch diode breakdown V
BR must be greater than
V
IN + |VOUT|
input capacitor is larger due to the increased peak
current during switch turn on. Power dissipation is
approximately:
Please contact factory for additional assistance when
using the buck/boost topology.
TYPICAL APPLICATION - INVERTING BUCK/BOOST
Inverting buck/boost operation is a different topology of
operation than buck. This difference reduces the out-
put 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 approxi-
mately:
)
2576
LM
(
V
1
2
5
.
3
I
IN
O
OUT
+
≈
)
2575
LM
(
V
1
2
3
.
1
I
IN
O
OUT
+
≈
LM2575
LM2576
C
IN
47F
100F
D1
3A
7A
L1
100H
68H
C
OUT
2,700F
6,800F
I
OUT
250mA
500mA
LM2575
LM2576
C
IN
47F
100F
D1
3A
7A
L1
100H
68H
C
OUT
470F
2,700F
I
OUT
100mA
750mA
IN
O
IN
SAT
IN
O
IN
O
D
V
02
.
0
V
1
I
V
P
+
+
+
≈
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| LM2575T-12EP | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, SFM5 |
| LM2575HVM-12EP | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2575S-12TR | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:1A & 3A Miniconverter Switching Regulators |
| LM2575S-15 | 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 |
| LM2575S-15 NOPB | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 6-Pin(5+Tab) TO-263 |
| LM2575S-15/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 |
| LM2575S-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 |
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