MB3771 Datasheet: Bipolar Power Supply Monitor - Fujitsu

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MB37712. AC Characteristics(VCC = 5 V, Ta = + 25 °C, CT = 0.01 µF)Parameter Symbol ConditionsValueMin Typ MaxUnitVSA, VSB input pulse width tPI ⎯ 5.0 ⎯ ⎯ µsReset hold time tPO ⎯ 0.5 1.0 1.5 msRESET rise time trRL = 2.2 kΩ,⎯ 1.0 1.5 µsRESET fall time tfCL = 100 pF⎯ 0.1 0.5 µstPD* 1 ⎯ ⎯ 2 10 µsPropagation delay time tPHL* 2RL = 2.2 kΩ,⎯ 0.5 ⎯ µstPLH* 2 CL = 100 pF⎯ 1.0 ⎯ µs*1: In case of VSB termination.*2: In case of VSC termination.6
MB3771■ APPLICATION CIRCUIT1. 5V Power Supply MonitorMonitored by VSA. Detection threshold voltage is VSAL and VSAHVCCMB3771CT12348765RESETLogiccircuit2. 5V Power Supply Voltage Monitor (Externally Fine-Tuned Type)The VSA detection voltage can be adjusted externally.Resistance R1 and R2 are set sufficiently lower than the IC internal partial voltage resistance, so that the detectionvoltage can be set using the ratio between resistance R1 and R2. (See the table below).•R1, R2 calculation formula (when R1
Page 4 and 5: MB3771■ ABSOLUTE MAXIMUM RATINGSR
Page 8 and 9: MB37713. Arbitrary Voltage Supply M
Page 10 and 11: MB37716. 5 V Power Supply Monitor w
Page 12 and 13: MB3771(2) 5 V Reference Voltage Gen
Page 14 and 15: MB377113. Back-up Power Supply Syst
Page 16 and 17: MB3771(Continued)Detection voltage
Page 18 and 19: MB3771■ PACKAGE DIMENSIONS8-pin P
Page 20 and 21: MB3771(Continued)8-pin Plastic SOP(

MB3771 Datasheet: Bipolar Power Supply Monitor - Fujitsu

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