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UCM101 데이터시트 PDF




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부품번호 UCM101 기능
기능 BIDIRECTIONAL PRECISION HIGH-SIDE CURRENT MONITOR
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UCM101 데이터시트, 핀배열, 회로
UNISONIC TECHNOLOGIES CO., LTD
UCM101
Preliminary
BIDIRECTIONAL PRECISION
HIGH-SIDE CURRENT
MONITOR
DESCRIPTION
The UTC UCM101 is a bidirectional precision high-side current
sense monitor. It uses UTC’s advanced technology to provide
customers with a minimum operating current, high accuracy, high
side voltage and a fixed gain of 10, etc.
The UTC UCM101’s output voltage is proportional to the
differential input voltage. Direction of current flow is indicated by
the Flag pin.
The UTC UCM101 is suitable for widely voltage range
applications and portable battery equipment.
5
FEATURES
* Low operating current
* High side voltage (2.7~20V)
* A fixed gain of 10
* High accuracy (typ=1%)
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UCM101L-AF5-R
UCM101G-AF5-R
Package
SOT-25
CMOS IC
4
3
12
SOT-25
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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UCM101 pdf, 반도체, 판매, 대치품
UCM101
Preliminary
CMOS IC
APPLICATION INFORMATION
A common application for micro-power current monitors is measuring the discharge current of a rechargeable
lithium ion/polymer battery. The UTC UCM101 enables measuring both the charge and discharge current into the
battery and with its wide operating voltage of 2.5~20V enables it to measure the currents in to/ out of up to 4 cells
connected in series.
When choosing appropriate values for RSENSE a compromise must be reached between in-line signal loss
(including potential power dissipation effects) and small signal accuracy.
Higher values for RSENSE gives better accuracy at low load currents by reducing the inaccuracies due to internal
offsets. For best operation the UTC UCM101 has been designed to operate with VSENSE of the order of
50mV~150mV.
TYPICAL APPLICATION CIRCUIT
VIN+
RS
VIN-
45
S+ S-
UTC
UCM101
1
GND
2
OUT
3
Flag
VOUT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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