MCP111/112 MCP111/112 Micropower Voltage Detector Features Description Ultra-low supply current: 1.75 A (max.) The MCP111/112 are voltage-detecting devices designed to keep a microcontroller in reset until the Precision monitoring options of: system voltage has reached, and stabilized, at the - 1.90V, 2.32V, 2.63V, 2.90V, 2.93V, 3.08V, appropriate level for reliable system operation. These 4.38V and 4.63V devices also operate as protection from brown-out Resets microcontroller in a power-loss event conditions when the system supply voltage drops Active-low V pin: OUT below a safe operating level. The MCP111 and - MCP111 active-low, open-drain MCP112 are available in eight different trip voltages. - MCP112 active-low, push-pull The MCP111 has an open-drain output with an active- Available in SOT23-3, TO-92 and SC70 packages low pin (V ). This device will assert V when the OUT OUT voltage on the V pin is below the trip-point voltage. Temperature Range: DD - Extended: 40C to +125C The MCP112 has a push-pull output and will assert an (except MCP1XX-195) active-low signal (V pin) when the voltage on the OUT V pin is below the trip-point voltage. - Industrial: 40C to +85C (MCP1XX-195 only) DD During operation, the output (V ) remains at a logic- OUT Applications high as long as V is greater than the specified DD threshold voltage. When V falls below the voltage DD Critical C and P Power-monitoring Applications trip point, V is driven low. OUT Computers Intelligent Instruments Package Types Portable Battery-Powered Equipment SOT23-3/SC-70 Block Diagram V 1 V DD OUT V 3 DD Comparator V V 2 OUT SS + Output Driver TO-92 Band Gap Reference V OUT V V SS DD V SS 2004 Microchip Technology Inc. DS21889B-page 1MCP111/112 Notice: Stresses above those listed under Maximum Rat- 1.0 ELECTRICAL ings may cause permanent damage to the device. This is a CHARACTERISTICS 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. Expo- Absolute Maximum Ratings sure to maximum rating conditions for extended periods may V . 7.0V affect device reliability. DD Input current (V ) 10 mA DD Output current (RST) 10 mA Rated Rise Time of V 100V/s DD All inputs and outputs w.r.t. V . 0.6V to (V + 1.0V) SS DD Storage temperature 65C to + 150C Ambient temp. with power applied .40C to + 125C Maximum Junction temp. with power applied 150C ESD protection on all pins . 2kV DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, all limits are specified for V = 1V to 5.5V, R = 100 k (only MCP111), DD PU T = 40C to +125C. A Parameters Sym Min Typ Max Units Conditions Operating Voltage Range V 1.0 5.5 V DD Specified V Value to V low V 1.0 V I = 10 A, V < 0.2V DD OUT DD RST RST Operating Current I < 1 1.75 A DD V Trip Point MCP1XX-195 V 1.872 1.900 1.929 V T = +25C (Note 1) DD TRIP A 1.853 1.900 1.948 V T = -40C to +85C (Note 2) A MCP1XX-240 2.285 2.320 2.355 V T = +25C (Note 1) A 2.262 2.320 2.378 V Note 2 MCP1XX-270 2.591 2.630 2.670 V T = +25C (Note 1) A 2.564 2.630 2.696 V Note 2 MCP1XX-290 2.857 2.900 2.944 V T = +25C (Note 1) A 2.828 2.900 2.973 V Note 2 MCP1XX-300 2.886 2.930 2.974 V T = +25C (Note 1) A 2.857 2.930 3.003 V Note 2 MCP1XX-315 3.034 3.080 3.126 V T = +25C (Note 1) A 3.003 3.080 3.157 V Note 2 MCP1XX-450 4.314 4.380 4.446 V T = +25C (Note 1) A 4.271 4.380 4.490 V Note 2 MCP1XX-475 4.561 4.630 4.700 V T = +25C (Note 1) A 4.514 4.630 4.746 V Note 2 V Trip Point Tempco T 100 ppm/ DD TPCO C Threshold Hysteresis MCP1XX-195 V 0.019 0.114 V T = +25C HYS A (min. = 1%, max = 6%) MCP1XX-240 0.023 0.139 V MCP1XX-270 0.026 0.158 V MCP1XX-290 0.029 0.174 V MCP1XX-300 0.029 0.176 V MCP1XX-315 0.031 0.185 V MCP1XX-450 0.044 0.263 V MCP1XX-475 0.046 0.278 V Note 1: Trip point is 1.5% from typical value. 2: Trip point is 2.5% from typical value. DS21889B-page 2 2004 Microchip Technology Inc.