參數(shù)資料
型號(hào)： MCP121
廠商： Microchip Technology Inc.
英文描述： Micropower Voltage Detector
中文描述： 微功耗電壓檢測(cè)器
文件頁(yè)數(shù)： 1/26頁(yè)
文件大?。?/td> 266K
代理商： MCP121
2005 Microchip Technology Inc.
DS21889D-page 1
MCP111/112
Features
Ultra-low supply current: 1.75 μA (max.)
Precision monitoring options of:
- 1.90V, 2.32V, 2.63V, 2.90V, 2.93V, 3.08V,
4.38V and 4.63V
Resets microcontroller in a power-loss event
Active-low V
OUT
pin:
-
MCP111
active-low, open-drain
-
MCP112
active-low, push-pull
Available in SOT23-3, TO-92, SC-70 and
SOT-89-3 packages
Temperature Range:
- Extended: -40°C to +125°C
(
except MCP1XX-195
)
- Industrial: -40°C to +85°C (
MCP1XX-195 only
)
Pb-free devices
Applications
Critical Microcontroller and Microprocessor
Power-Monitoring Applications
Computers
Intelligent Instruments
Portable Battery-Powered Equipment
Description
The MCP111/112 are voltage-detecting devices
designed to keep a microcontroller in reset until the
system voltage has stabilized at the appropriate level
for reliable system operation. These devices also
operate as protection from brown-out conditions when
the system supply voltage drops below the specified
threshold voltage level. Eight different trip voltages are
available.
TABLE 1:
DEVICE FEATURES
Package Types
Block Diagram
3-Pin SOT23-3/SC-70
V
DD
V
OUT
M
1
2
V
SS
V
SS
V
OUT
3-Pin TO-92
V
DD
1
3
2
V
DD
V
SS
V
OUT
3-Pin SOT-89
V
DD
MCP111/112
V
DD
Comparator
+
–
Driver
V
OUT
Band Gap
Reference
V
SS
Device
Output
Reset Delay
(typ)
Package Pin Out
(Pin # 1, 2, 3)
Comment
Type
Pull-up Resistor
MCP111
Open-drain
External
No
V
OUT
, V
SS
, V
DD
V
OUT
, V
SS
, V
DD
RST, V
DD
, V
SS
MCP112
Push-pull
No
No
MCP102
Push-pull
No
120 ms
See
MCP102/103/121/131
Data Sheet
(DS21906)
MCP103
Push-pull
No
120 ms
V
SS
, RST, V
DD
See
MCP102/103/121/131
Data Sheet
(DS21906)
MCP121
Open-drain
External
120 ms
RST, V
DD
, V
SS
See
MCP102/103/121/131
Data Sheet
(DS21906)
MCP131
Open-Drain
Internal (~95 k
Ω
)
120 ms
RST, V
DD
, V
SS
See
MCP102/103/121/131
Data Sheet
(DS21906)
Micropower Voltage Detector
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