MCP112

Features:

• Ultra-low supply current: 1.75 A (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 VOUT pin: - MCP111 active-low, open-drain - MCP112 active-low, push-pull
• Available in SOT23-3, 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)




Application

• Critical C and P Power-monitoring Applications
• Computers
• Intelligent Instruments
• Portable Battery-Powered Equipment




Pinout






Specifications

Parameter NameValueVcc Range (V)1.0 to 5.5OutputPush-PullTypical Supply Current (A)1Reset TypeActive Low Minimal Reset Voltage (V)1.87, 2.29, 2.59, 2.86, 2.87, 3.03, 4.31, 4.56Minimal Reset Pulse Width (ms)0.1Operating Temp. Range (°C)-40 to 85

Parameter Name	Value
Vcc Range (V)	1.0 to 5.5
Output	Push-Pull
Typical Supply Current (A)	1
Reset Type	Active Low
Minimal Reset Voltage (V)	1.87, 2.29, 2.59, 2.86, 2.87, 3.03, 4.31, 4.56
Minimal Reset Pulse Width (ms)	0.1
Operating Temp. Range (°C)	-40 to 85

V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .. . .. . .. . . . . . . . 7.0V
Input current (V_DD) . . . . . . . . . . . . . . . . . . . .. . .. . .. .. . . . . . . . .10 mA
Output current (RST) . . . . . . . . . . . . . . . . . . ... . ... . .. . . . . . . .10 mA
Rated Rise Time of V_DD . . . . . . . . . . . . .. . ... . .. . .. . . . . . . . 100V/s
All inputs and outputs w.r.t. V_SS . . . . .. .. . .. . .. 0.6V to (V_DD + 1.0V)
Storage temperature . . . . . . . . . . . . . . .. . .. ... . .65°C to + 150°C
Ambient temp. with power applied . . . . . . .. .. . .. ..40°C to + 125°C
Maximum Junction temp. with power applied . . . ... . ... . .. . . . . 150°C
ESD protection on all pins . . . . . . . . . . . . . . . . . . .. . ... . .. . . . . 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.

Description

The MCP111/112 Series are CMOS voltage detectors are well suited for portable, consumer electrics applications due to the extremely low 1uA operating current and small surface-mount packaging. These devices are designed to hold the microcontroller in reset until the supply voltage reaches a predetermined operating level. These devices also protect against brownout conditions that occur as a result of the supply voltage dropping below a tolerable level.

The MCP111/112 are voltage-detecting devices designed to keep a microcontroller in reset until the system voltage has reached, and 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 a safe operating level. The MCP111 and MCP112 are available in eight different trip voltages.

The MCP111 has an open-drain output with an activelow pin (V_OUT). This device will assert V_OUT when the voltage on the VDD pin is below the trip-point voltage.

The MCP112 has a push-pull output and will assert an active-low signal (V_OUT pin) when the voltage on the V_DD pin is below the trip-point voltage.

During operation, the output (V_OUT) remains at a logichigh as long as V_DD is greater than the specified threshold voltage. When V_DD falls below the voltage trip point, V_OUT is driven low.