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參數資料
| 型號： | CAT2300VP2-GT3 |
| 廠商： | ON Semiconductor |
| 文件頁數： | 5/7頁 |
| 文件大小： | 207K |
| 描述： | IC SENSE FET CONTROLLER 8TDFN |
| 標準包裝： | 3,000 |
| 系列： | SENSEFET® |
| 功能： | 電流鏡像 |
| 檢測方法： | 高端 |
| 輸入電壓： | 0.9 V ~ 1.5 V |
| 電流 - 輸出： | 70mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WFDFN 裸露焊盤 |
| 供應商設備封裝： | 8-TDFN（2x3） |
| 包裝： | 帶卷 (TR) |
CAT2300
http://onsemi.com
5
V
DD
V
DD
provides gate drive for the SENSEFET and power
for CAT2300s internal circuitry and must be +5 V.
I
MEAS
I
MEAS
is the mirror current output. Placing a resistor
between I
MEAS
and ground produces a voltage proportional
to I
BUS
. The maximum voltage producible at IMEAS is the
Kelvin voltage (V
K
) 0.1 V. This sets a limitation on the
maximum value of R
MEAS
.
R
MEAS
+
V
K
* 0.1 V
I
SENSE
+ CSR
V
K
* 0.1 V
I
bus
where:
CSR = Current Sensing Ratio taken from the SENSEFET
data sheet.
I
bus
= Max current through the SENSEFET.
EN
Enable is a high true logic input controlling the
SENSEFETs ON/OFF state. A logic high on EN turns the
switch ON; a logic low turns it OFF.
Bus turn-ON time is controlled by the FETs input gate
capacitance and the drive current applied to the gate.
To minimize power consumption EN disables the internal
gate drive current source and current mirroring circuitry
whenever the SENSEFET is OFF.
VREG
CAT2300
NTMF4834NS
GND
Sense
Sense
KS
Kelvin
Kelvin
Source
Drain
Gate
Gate
EN
250 mA
1
0
Figure 5. Typical Application
V
DD
I
bus
V
IN
V
OUT
I
Sense
I
MEAS
V
MEAS
+
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