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參數(shù)資料
| 型號(hào)： | MCZ34653EFR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 1649K |
| 描述： | IC HOTSWAP CTRLR 1A NEG 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 熱交換開關(guān) |
| 應(yīng)用： | 通用 |
| 內(nèi)部開關(guān)： | 是 |
| 電流限制： | 1A |
| 電源電壓： | 36 V ~ 80 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 包裝： | 帶卷 (TR) |
Analog Integrated Circuit Device Data
Freescale Semiconductor
19
34653
TYPICAL APPLICATIONS
rchived by Freescale Semiconductor, Inc., 2008
Table 6. R
ICHG
Values for Some Desired I
CHG
Values
Figure 20. External Resistor (R
ICHG
) Value Versus
Charging Current Limit Value (I
CHG
)
Choosing the External Capacitor C
ICHG
Value
The user can also change the charging current rise time by
adding a capacitor (C
ICHG
) between the ICHG and VIN pins,
as shown in Figure 19
, page 17
. The charging current rise
time ranges between 1.0 ms (default value) and a
recommended maximum of 10 ms. Table 7
lists examples of
C
ICHG
for different values of t
ICHGR
and Figure 21
shows a
plot of C
ICHG
versus t
ICHGR
.
To calculate the value of the C
ICHG
capacitor we use the
following equation:
C
ICHG
(nF) = 1000
*
t
ICHGR
(ms) / [ 3
*
R
ICHG
(k? ]
Figure 21. Charging Current External Capacitor (C
ICHG
)
Versus Charging Current Rise Time t
ICHGR
I
CHG
(A) R
ICHG
(k?/SPAN>)
0.05
15.35
0.1
32.10
0.15
48.85
0.2
65.60
0.25
82.35
0.3
99.10
0.35
115.85
0.4
135.60
0.45
149.35
0.5
166.10
0
20
40
60
80
100
120
140
160
180
0 0.1 0.2 0.3 0.4 0.5 0.6
ICHG (A)
I
CHG
(A)
Table 7. C
ICHG
Values for Some Desired t
ICHGR
Values
at a Specific I
CHG
Value
t
ICHGR
(ms)
C
ICHG
(nF)
I
CHG
= 0.05 A
C
ICHG
(nF)
I
CHG
= 0.1 A
C
ICHG
(nF)
I
CHG
= 0.5 A
1.0
21.72
10.38
2.01
2.0
43.43
20.77
4.01
3.0
65.15
31.15
6.02
4.0
86.86
41.54
8.03
5.0
108.58
51.92
10.03
6.0
130.29
62.31
12.04
7.0
152.01
72.69
14.05
8.0
173.72
83.07
16.05
9.0
195.44
93.46
18.06
10
217.16
103.84
20.07
0
20
40
60
80
100
120
140
160
180
200
220
0 1 2 3 4 5 6 7 8 9 10 11
TICHGR (ms)
ICHG = 0.05 A
ICHG = 0.1 A
ICHG = 0.5 A
I
CHG
I
CHG
I
CHG
t
ICHGR
(ms)
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