参数资料
型号: MIC2583R-KBQS TR
厂商: Micrel Inc
文件页数: 15/25页
文件大小: 826K
描述: IC CTRLR HOT SWAP 100MV 16-QSOP
标准包装: 2,500
类型: 热交换控制器
应用: 通用
内部开关:
电源电压: 2.3 V ~ 13.2 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 带卷 (TR)
其它名称: MIC2583R-KBQSTR
MIC2583R-KBQSTR-ND
Micrel, Inc.
MIC2582/MIC2583
 
 
April 2009 
15
M9999-043009-C
 
current   (I
CPOR
)   are   typically   1.24V   and   2.5礎,
respectively.
For   the   MIC2583/83R,   a   capacitor   connected   to
CFILTER is used to set the timer which activates the
circuit breaker during overcurrent conditions. When the
voltage across the sense resistor exceeds the slow trip
current limit threshold of 50mV, the overcurrent timer
begins to charge for a time period (t
OCSLOW
), determined
by C
FILTER
. When no capacitor is connected to CFILTER
and for the MIC2582, t
OCSLOW
 defaults to 5祍. If t
OCSLOW
 
elapses, then the circuit breaker is activated and the
GATE output is immediately pulled to ground. For the
MIC2583/83R,   the   following   equation   is   used   to
determine the overcurrent timer period, t
OCSLOW
.
 
)
(
0.19
F
C
I
V
C
t
FILTER
TIMER
TH
FILTER
OCSLOW
?/DIV>
?/DIV>
E
?/DIV>
=
  (8)
where V
TH
, the CFILTER timer threshold, is 1.24V and
I
TIMER
, the overcurrent timer current, is 6.5礎. Tables 2
and 3 provide a quick reference for several timer
calculations using select standard value capacitors.
 
C
POR
 
t
START
 
t
POR
 
0.01礔
1.2ms
5ms 
0.02礔 
2.4ms 
10ms 
0.033礔 
4ms 
16.5ms 
0.05礔 
6ms 
25ms 
0.1礔 
12ms 
50ms 
0.33礔 
40ms 
165ms 
0.47礔 
56ms 
235ms 
1礔 
120ms 
500ms 
Table 2. Selected Power-On Reset and Start-Up Delays
 
C
FILTER
 
t
OCSLOW
 
680pF
130祍
2200pF
420祍
4700pF
900祍
8200pF
1.5ms
0.033礔
6ms
0.1礔
19ms
0.22礔
42ms
0.47礔
90ms
Table 3. Selected Overcurrent Timer Delays
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