UNISONIC TECHNOLOGIES CO., LTD
UM21125
SINGLE-SUPPLY COMPARATOR
DESCRIPTION
The UTC
UM21125
is a single-supply comparator. There is a
70mV V
REF
negative input inside.
LINEAR INTEGRATED CIRCUIT
FEATURES
* Single-Supply Operation
* Low Operating Voltage: ±2.7V~20V
* Low Operating Current: 1.3mA (Typ.)
ORDERING INFORMATION
Ordering Number
Lead Free
UM21125L-AF5-R
Halogen Free
UM21125G-AF5-R
Package
SOT-25
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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QW-R105-038.E
UM21125
PIN CONFIGURATION
V
+
5
OUTPUT
4
LINEAR INTEGRATED CIRCUIT
2
1
3
+INPUT GND -INPUT
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
PIN NAME
+INPUT
GND
-INPUT
OUTPUT
V+
DESCRIPTION
Positive
input of the comparator
Ground Connection
Negative input of the comparator (there is 70mV Vref inside)
The output of the comparator
Supply voltage
BLOCK DIAGRAM
+INPUT
1
5
V+
GND
2
-INPUT
3
70mV
Vref
4
OUTPUT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R105-038.E
UM21125
PARAMETER
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(T
A
=25°C, unless other specified)
SYMBOL
RATINGS
UNIT
+
Supply Voltage
V
+20
V
Differential Input Voltage
V
I(DIFF)
+20
V
Input Voltage
V
IN
-0.3 ~ +20 (Note 2)
V
Power Dissipation
P
D
200
mW
Junction Temperature
T
J
+125
°C
Operating Temperature
T
OPR
-40~ +85
°C
Storage Temperature
T
STG
-40~+125
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. When the supply voltage is less than +20V, the absolute maximum input voltage is equal to the supply
voltage.
ELECTRICAL CHARACTERISTICS
(V
+
=5V,T
A
=25°C, unless other specified)
PARAMETER
-Input DC Level
Maximum Output Voltage Swings
Operating current
Output Source Current
Output Sink Current
SYMBOL
TEST CONDITIONS
V
IN
-
V
OM
R
L
=2kΩ
V+=5V, R
L
=∞
I
CC
V+=20V, R
L
=∞
I
SOURCE
V
IN
+=1V, V
IN
-=70mV
I
SINK
V
IN
+=0V, V
IN
-=70mV
MIN
63
3.5
TYP
68
1.3
1.6
30
20
MAX
73
1.75
2.35
UNIT
mV
V
mA
mA
mA
mA
20
8
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R105-038.E
UM21125
TYPICAL CHARSACTERIST
Reference Voltage vs. Supply Voltage
100
95
90
85
80
75
70
65
60
55
50
45
0 2
4 6 8 10 12 14 16 18 20 22
Supply Voltage, V
CC
(V)
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
LINEAR INTEGRATED CIRCUIT
Operating Current vs. Supply Voltage
0 2
4 6 8 10 12 14 16 18 20 22
Supply Voltage, V
CC
(V)
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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QW-R105-038.E
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