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ZXCT1020 데이터시트 PDF




Zetex Semiconductors에서 제조한 전자 부품 ZXCT1020은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 ZXCT1020 기능
기능 Low offset current output current monitor
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ZXCT1020 데이터시트, 핀배열, 회로
www.DataSheet4U.com
ZXCT1020
ZXCT1020
Low offset current output current monitor
Description
The ZXCT1020 is a precision high-side current
sense monitor. Using this type of device
eliminates the need to disrupt the ground
plane when sensing a load current.
The ZXCT1020 uses two external resistors to
set the overall voltage gain for applications
where improved accuracy at small sense
voltages is required. For fixed gain variants
Zetex offers the ZXCT1021 (G=10) and
ZXCT1022 (G=100).
The ZXCT1020 footprint follows that of the
ZXCT1021/2 with only 2 additional resistors
required:
One resistor between pins 1 and 4 for setting
transconductance, and the other between
pins 3 and 2 for setting overall gain.
Features
• Accurate high-side current sensing
• Versatile current output scaling
• 2.5V - 20V operating range
• 25µA quiescent current
• 1% typical accuracy
• SOT23-5 package
Pinout information
Current output enables the user to set the gain
via these external resistors. Using two external
resistors to set the gain ensures optimal
versatility as the transconductance can be varied
to meet the output impedance requirements of
the load that the ZXCT1020 has to drive.
The very low offset voltage enables a typical
accuracy of 3% for sense voltages of only 10mV,
giving better tolerances for small sense
resistors necessary at higher currents.
The wide input voltage range of 20V down to as
low as 2.5V make it suitable for a range of
applications. With a minimum operating current
of just 25µA, combined with its SOT23-5
package make it suitable for portable battery
equipment too.
Applications
• Battery chargers
• Over-current monitor
• Motherboard power supply current measurement
• Level translating
• Programmable current source
Typical application circuit
S+ 1
5 S-
GND 2
OUT 3
4 VB
Top view
RSH
S+ 1
VOUT
RG
3
RS IL
VB
S-
(LOAD)
45
-
+
2 ZXCT1020
GND
Ordering information
Order reference
Package
ZXCT1020E5TA
SOT23-5
Device
marking
1020
Status
Preview
Reel size
(inches)
7
Quantity
per reel
3000
Tape width
(mm)
8
Issue 1 - August 2007
© Zetex Semiconductors plc 2007
1
www.zetex.com




ZXCT1020 pdf, 반도체, 판매, 대치품
www.DataSheet4U.com
ZXCT1020
Typical characteristics
Test conditions unless otherwise stated: TA = 25°C, VB = VSENSE+ (via RSH) =15V, VSENSE = 100mV
RSH = 1.5k, RG = 15k.
Supply current v Temperature
Issue 1 - August 2007
© Zetex Semiconductors plc 2007
4
www.zetex.com

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ZXCT1020 전자부품, 판매, 대치품
www.DataSheet4U.com
ZXCT1020
Test conditions unless otherwise stated: TA = 25°C, VB = VSENSE+ (via RSH) =15V, VSENSE = 100mV
RG = 15k.
Gain = 100
°
°
°
°
°
°
°
VSENSE = 10mV
Issue 1 - August 2007
© Zetex Semiconductors plc 2007
7
www.zetex.com

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