MCP102/103/121/131
Micropower Voltage Supervisors
Features:
• Ultra-Low Supply Current: 1.75 µA
(steady-state maximum)
• Precision Monitoring Options of:
- 1.90V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V and
4.63V
• Resets Microcontroller in a Power-Loss Event
• RST Pin (active-low):
-
MCP121:
Active-low, Open-drain
-
MCP131:
Active-low, Open-drain with Inter-
nal Pull-up Resistor
-
MCP102
and
MCP103:
Active-low, Push-pull
• Reset Delay Timer (120 ms delay, typical)
• Available in SOT-23, TO-92 and SC70 Packages
• Temperature Range:
- Extended: -40°C to +125°C
(except
MCP1XX-195)
- Industrial: -40°C to +85°C (MCP1XX-195
only)
• Pb-free Devices
General Description:
The MCP102/103/121/131 devices are voltage
supervisor devices designed to keep a microcontroller
in reset until the system voltage has reached and
stabilized at the proper level for reliable system
operation.
Table 1
shows the available features for
these devices.
Package Types
SOT-23/SC70
RST 1
MCP102/121/131
TO-92
3 V
SS
RST
V
DD
V
SS
V
DD
2
SOT-23/SC70
V
SS
1
MCP103
3 V
DD
Applications:
• Critical Microcontroller and Microprocessor
Power-monitoring Applications
• Computers
• Intelligent Instruments
• Portable Battery-powered Equipment
RST
2
Block Diagram
V
DD
R
(1)
Comparator
+
–
Band Gap
Reference
V
SS
Note:
MCP131 only
Reset
Delay
Circuit
Output
Driver
RST
2004-2014 Microchip Technology Inc.
DS20001906D-page 1
MCP102/103/121/131
TABLE 1:
Device
Type
MCP102
Push-pull
MCP103
Push-pull
Pull-up Resistor
No
No
DEVICE FEATURES
Output
Reset
Delay
(typ)
120 ms
120 ms
120 ms
Package Pinout
(Pin # 1, 2, 3)
RST, V
DD
, V
SS
V
SS
, RST, V
DD
RST, V
DD
, V
SS
RST, V
DD
, V
SS
V
OUT
, V
SS
, V
DD
V
OUT
, V
SS
, V
DD
See
MCP111/112
Data Sheet
(DS21889)
See
MCP111/112
Data Sheet
(DS21889)
Comment
MCP121
Open-drain External
MCP111
Open-drain External
MCP112
Push-Pull
No
MCP131
Open-drain Internal (~95 k) 120 ms
No
No
DS20001906D-page 2
2004-2014 Microchip Technology Inc.
MCP102/103/121/131
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings†
V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0V
Input current (V
DD
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 mA
Output current (RST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 mA
Rated Rise Time of V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V/µs
All inputs and outputs (except RST) w.r.t. V
SS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to (V
DD
+ 1.0V)
RST output w.r.t. V
SS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to 13.5V
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to + 150°C
Ambient temperature with power applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to + 125°C
Maximum Junction temperature with power applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
ESD protection on all pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ³ 2 kV
† Notice:
Stresses above those listed under “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 listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.
DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, all limits are specified for: V
DD
= 1V to 5.5V, R
PU
= 100 k (MCP121 only),
T
A
= -40°C to +125°C.
Parameters
Operating Voltage Range
Specified V
DD
Value to RST low
Operating Current
Sym.
V
DD
V
DD
I
DD
Min.
1.0
1.0
—
—
I
DD
—
—
—
Note 1:
2:
3:
4:
5:
Typ.
—
—
<1
—
<1
—
—
1.75
20.0
1.75
75
90
Max.
5.5
Units
V
V
µA
µA
µA
µA
µA
I
RST
= 10 µA, V
RST
< 0.2V
Reset Power-up Timer (t
RPU
) Inactive
Reset Power-up Timer (t
RPU
) Active
V
DD
> V
TRIP
and Reset Power-up
Timer (t
RPU
) Inactive
V
DD
< V
TRIP
and Reset Power-up
Timer (t
RPU
) Inactive
(Note
3)
Reset Power-up Timer (t
RPU
) Active
(Note
4)
Conditions
MCP102,
MCP103,
MCP121
MCP131
6:
Trip point is ±1.5% from typical value.
Trip point is ±2.5% from typical value.
RST output is forced low. There is a current through the internal pull-up resistor.
This includes the current through the internal pull-up resistor and the reset power-up timer.
This specification allows this device to be used in PIC
®
microcontroller applications that require In-Circuit Serial
Programming™ (ICSP™) (see device-specific programming specifications for voltage requirements). This specification
DOES NOT allow a continuous high voltage to be present on the open-drain output pin (V
OUT
). The total time that the
V
OUT
pin can be above the maximum device operational voltage (5.5V) is 100s. Current into the V
OUT
pin should be
limited to 2 mA and it is recommended that the device operational temperature be maintained between 0°C to 70°C
(+25°C preferred). For additional information, please refer to
Figure 2-33.
This parameter is established by characterization and not 100% tested.
2004-2014 Microchip Technology Inc.
DS20001906D-page 3
MCP102/103/121/131
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications:
Unless otherwise indicated, all limits are specified for: V
DD
= 1V to 5.5V, R
PU
= 100 k (MCP121 only),
T
A
= -40°C to +125°C.
Parameters
V
DD
Trip Point
MCP1XX-195
Sym.
V
TRIP
Min.
1.872
1.853
MCP1XX-240
2.285
2.262
MCP1XX-270
2.591
2.564
MCP1XX-300
2.886
2.857
MCP1XX-315
3.034
3.003
MCP1XX-450
4.314
4.271
MCP1XX-475
4.561
4.514
V
DD
Trip Point Tempco
Threshold
Hysteresis
min.
= 1%,
max = 6%)
MCP1XX-195
MCP1XX-240
MCP1XX-270
MCP1XX-300
MCP1XX-315
MCP1XX-450
MCP1XX-475
RST Low-level Output Voltage
RST High-level Output Voltage
(MCP102 and MCP103 only)
Internal Pull-up Resistor
(MCP131 only)
Open-drain High Voltage on Output
(MCP121 only)
V
OL
V
OH
R
PU
V
ODH
T
TPCO
V
HYS
—
0.019
0.023
0.026
0.029
0.031
0.044
0.046
—
V
DD
– 0.6
—
—
Typ.
1.900
1.900
2.320
2.320
2.630
2.630
2.930
2.930
3.080
3.080
4.380
4.380
4.630
4.630
±100
—
—
—
—
—
—
—
—
—
95
—
Max.
1.929
1.948
2.355
2.378
2.670
2.696
2.974
3.003
3.126
3.157
4.446
4.490
4.700
4.746
—
0.114
0.139
0.158
0.176
0.185
0.263
0.278
0.4
—
—
13.5
(5)
Units
V
V
V
V
V
V
V
V
V
V
V
V
V
V
ppm/°C
V
V
V
V
V
V
V
V
V
k
V
I
OL
= 500 µA, V
DD
= V
TRIP(MIN)
I
OH
= 1 mA; for
MCP102/MCP103
only
(push-pull output)
V
DD
= 5.5V
V
DD
= 3.0V, Time voltage > 5.5V
applied
100s,
current into pin limited to 2 mA, 25°C
operation recommended
(Note
5, Note 6)
T
A
= +25°C
Conditions
T
A
= +25°C
(Note
1)
T
A
= -40°C to +85°C
(Note
2)
T
A
= +25°C
(Note
1)
Note 2
T
A
= +25°C
(Note
1)
Note 2
T
A
= +25°C
(Note
1)
Note 2
T
A
= +25°C
(Note
1)
Note 2
T
A
= +25°C
(Note
1)
Note 2
T
A
= +25°C
(Note
1)
Note 2
Open-drain Output Leakage Current
(MCP121 only)
Note 1:
2:
3:
4:
5:
I
OD
—
0.1
—
µA
6:
Trip point is ±1.5% from typical value.
Trip point is ±2.5% from typical value.
RST output is forced low. There is a current through the internal pull-up resistor.
This includes the current through the internal pull-up resistor and the reset power-up timer.
This specification allows this device to be used in PIC
®
microcontroller applications that require In-Circuit Serial
Programming™ (ICSP™) (see device-specific programming specifications for voltage requirements). This specification
DOES NOT allow a continuous high voltage to be present on the open-drain output pin (V
OUT
). The total time that the
V
OUT
pin can be above the maximum device operational voltage (5.5V) is 100s. Current into the V
OUT
pin should be
limited to 2 mA and it is recommended that the device operational temperature be maintained between 0°C to 70°C
(+25°C preferred). For additional information, please refer to
Figure 2-33.
This parameter is established by characterization and not 100% tested.
DS20001906D-page 4
2004-2014 Microchip Technology Inc.
MCP102/103/121/131
V
TRIP
1V
V
DD
t
RPU
t
RPD
V
OH
1V
RST
t
RT
V
OL
FIGURE 1-1:
Timing Diagram.
AC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, all limits are specified for: V
DD
= 1V to 5.5V, R
PU
= 100 k
(MCP121 only), T
A
= -40°C to +125°C.
Parameters
V
DD
Detect to RST Inactive
V
DD
Detect to RST Active
Sym.
t
RPU
t
RPD
Min.
80
—
Typ.
120
130
Max.
180
—
Units
ms
µs
Conditions
Figure 1-1
and C
L
= 50 pF
V
DD
ramped from
V
TRIP(MAX)
+ 250 mV down to
V
TRIP(MIN)
– 250 mV, per
Figure 1-1,
C
L
= 50 pF (Note
1)
For RST 10% to 90% of final
value per
Figure 1-1,
C
L
= 50 pF
(Note
1)
RST Rise Time After RST Active
(MCP102 and MCP103 only)
t
RT
—
5
—
µs
Note 1:
These parameters are for design guidance only and are not 100% tested.
TEMPERATURE CHARACTERISTICS
Electrical Specifications:
Unless otherwise noted, all limits are specified for: V
DD
= 1V to 5.5V, R
PU
= 100 k
(MCP121 only), T
A
= -40°C to +125°C.
Parameters
Temperature Ranges
Specified Temperature Range
Specified Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Package Thermal Resistances
Thermal Resistance, 3L-SOT-23
Thermal Resistance, 3L-SC70
Thermal Resistance, 3L-TO-92
JA
JA
JA
—
—
—
308
335
146
—
—
—
ºC/W
ºC/W
ºC/W
T
A
T
A
T
J
T
A
-40
-40
—
-65
—
—
—
—
+85
+125
+150
+150
ºC
ºC
ºC
ºC
MCP1XX-195
Except MCP1XX-195
Sym.
Min.
Typ.
Max.
Units
Conditions
2004-2014 Microchip Technology Inc.
DS20001906D-page 5
