MIC841/2
Comparator with 1.25% Reference and Adjustable Hysteresis
Features
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1.5V to 5.5V Operating Range
1.5
μA
Typical Supply Current
±1.25% Voltage Threshold Accuracy
10 nA Maximum Input Leakage Current Over
Temperature
10
μs
Propagation Delay
Externally Adjustable Hysteresis (MIC841)
Internal 20 mV Hysteresis (MIC842)
Output Options:
- Push-Pull, Active-High
- Push-Pull, Active-Low
- Open-Drain, Active-Low
Open-Drain Output can be Pulled to 6V
Regardless of V
DD
Immune to Brief Input Transients
Teeny 5-Pin SC-70 Package
6-Pin 1.6 mm x 1.6 mm TDFN (MIC841)
4-Pin 1.2 mm x 1.6 mm TDFN (MIC842)
Smartphones
PDAs
Precision Battery Monitoring
Battery Chargers
General Description
The MIC841 and MIC842 are micro-power,
precision-voltage comparators with an on-chip voltage
reference.
Both devices are intended for voltage monitoring
applications. External resistors are used to set the
voltage monitor threshold. When the threshold is
crossed, the outputs switch polarity.
The MIC842 incorporates a voltage reference and
comparator with fixed internal hysteresis; two external
resistors are used to set the switching threshold
voltage. The MIC841 provides a similar function with
user adjustable hysteresis; this part requires three
external resistors to set the upper and lower thresholds
(the difference between the threshold voltages being
the hysteresis voltage).
Both the MIC841 and MIC842 are available with
push-pull or open-drain output stage. The push-pull
output stage is configured either active-high or
active-low; the open-drain output stage is only
configured active-low.
Supply current is extremely low (1.5
μA,
typical),
making it ideal for portable applications.
The MIC841/2 is supplied in the Teeny 5-pin SC-70,
6-pin 1.6 mm × 1.6 mm Thin DFN (MIC841), and 4-pin
1.2 mm × 1.6 mm Thin DFN (MIC842) packages.
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Applications
Package Types
MIC841
SC-70-5 (C5)
MIC841
6-Pin TDFN (MT)
MIC842
SC-70-5 (C5)
MIC842
4-Pin TDFN (MT)
LTH GND HTH
3
2
1
LTH
1
GND
2
HTH
3
6
OUT
5
NC
NC GND INP
3
2
1
OUT
1
GND
2
4
VDD
Yxx
OUT
4
EP
4
VDD
Yxx
OUT
4
EP
3
INP
VDD
5
VDD
5
2017 Microchip Technology Inc.
DS20005758A-page 1
MIC841/2
2.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage (V
DD
) ................................................................................................................................... –0.3V to +7V
Input Voltage (V
INP
, V
LTH
,V
HTH
) ..................................................................................................................................+7V
Output Current (I
OUT
) ............................................................................................................................................±20 mA
ESD Rating
(1)
.............................................................................................................................................................1 kV
Operating Ratings ‡
Supply Voltage (V
DD
) ................................................................................................................................ +1.5V to +5.5V
Input Voltage (V
INP
, V
LTH
,V
HTH
) ........................................................................................................................ 0V to +6V
V
OUT
(‘H’ and ‘L’ versions) ......................................................................................................................................... V
DD
V
OUT
(‘N’ version)........................................................................................................................................................+6V
† Notice:
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice:
The device is not guaranteed to function outside its operating ratings.
Note 1:
Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series
with 100 pF.
DS20005758A-page 4
2017 Microchip Technology Inc.
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