MCP111T-240E Datasheet, PDF (1/26 Pages) Microchip Technology – Micropower Voltage Detector

MCP111/112
Micropower Voltage Detector
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
3-Pin SOT23-3/SC-70
V_OUT 1
3 V_DD
3-Pin SOT-89
V_DD
MCP111/112
V_{SS 2}
1 23
V_OUT V_DD V_SS
3-Pin TO-92
V_OUT
V_DD ^VSS
Block Diagram
V_DD
Comparator
+
–
Output
Driver
V_OUT
Band Gap
Reference
V_SS
Device
Type
Output
Pull-up Resistor
Reset Delay
(typ)
Package Pin Out
(Pin # 1, 2, 3)
Comment
MCP111 Open-drain
MCP112 Push-pull
MCP102 Push-pull
External
No
No
No
No
120 ms
MCP103 Push-pull No
120 ms
MCP121 Open-drain External
120 ms
MCP131 Open-Drain Internal (~95 kΩ) 120 ms
V_OUT, V_SS, V_DD
V_OUT, V_SS, V_DD
RST, V_DD, V_SS
VSS, RST, V_DD
RST, V_DD, V_SS
RST, V_DD, V_SS
See MCP102/103/121/131 Data Sheet
(DS21906)
See MCP102/103/121/131 Data Sheet
(DS21906)
See MCP102/103/121/131 Data Sheet
(DS21906)
See MCP102/103/121/131 Data Sheet
(DS21906)
© 2005 Microchip Technology Inc.
DS21889D-page 1