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參數資料
| 型號： | ZXCT1009T8TA |
| 廠商： | Diodes Inc |
| 文件頁數： | 4/8頁 |
| 文件大小： | 198K |
| 描述： | IC CURRENT MONITOR 1% SM8 |
| 產品培訓模塊： | Designing with Zetex Current Monitors |
| 標準包裝： | 1 |
| 功能： | 電流監控器 |
| 檢測方法： | 高端 |
| 精確度： | ±1% |
| 輸入電壓： | 2.5 V ~ 20 V |
| 電流 - 輸出： | 10.2mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-223-8 |
| 供應商設備封裝： | SM8 |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 1478 (CN2011-ZH PDF) |
| 其它名稱： | ZXCT1009T8DKR |
ZXCT1009
HIGH-SIDE CURRENT MONITOR
ZXCT1009
Document number: DS33441 Rev. 12 - 2
4 of 8
www.diodes.com
April 2011
?Diodes Incorporated
Typical Characteristics (cont.)
Power Dissipation
The maximum allowable power dissipation of the device for
normal operation (P
MAX
), is a function of the package junction to
ambient thermal resistance (?/DIV>
JA
), maximum junction temperature
(T
JMAX
), and ambient temperature (T
AMB
), according to the
expression:
P
MAX
= (T
JMAX
T
AMB
) / ?/DIV>
JA
The device power dissipation, P
D
is given by the expression:
P
D
= I
OUT
(V
IN
-V
OUT
) W
Application Information
The following text describes how to scale a load current
to an output voltage.
V
SENSE
= V
IN
- V
LOAD
V
OUT
= 0.01 x V
SENSE
x R
OUT
1
E.g.
A 1A current is to be represented by a 100mV output
voltage:
1) Choose the value of R
SENSE
to give 50mV >
V
SENSE
> 500mV at full load.
For example V
SENSE
= 100mV at 1.0A.
R
SENSE
= 0.1/1.0 => 0.1&.
2) Choose R
OUT
to give V
OUT
= 100mV, when
V
SENSE
= 100mV.
Rearranging
1
for Rout gives:
R
OUT
= V
OUT
/(V
SENSE
x 0.01)
R
OUT
= 0.1 / (0.1 x 0.01) = 100&
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