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MIC4685BR 参数 Datasheet PDF下载

MIC4685BR图片预览
型号: MIC4685BR
PDF下载: 下载PDF文件 查看货源
内容描述: 3A SPAK SuperSwitcher ™降压稳压器 [3A SPAK SuperSwitcher⑩ Buck Regulator]
分类和应用: 稳压器开关
文件页数/大小: 15 页 / 155 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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MIC4685
Micrel
Functional Characteristics
Switching Frequency Foldback
V
SW
(NORMAL)
12V IN, 5V/1A OUT
Load Transient
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 1.0A to 0.1A
V
OUT
(100mV/div.)
Normal
Operation
5.1V
5V
200kHz
V
SW
(SHORTED)
12V IN, 0V OUT
Short
Circuit
Operation
Typical
I
OUT
(500mA/div.)
1A
0A
70kHz
TIME (25µs/div.)
TIME
Frequency Foldback
The MIC4685 folds the switching frequency back during a
hard short circuit condition to reduce the energy per cycle and
protect the device.
MIC4685
8
September 2002