BA6286N

Motor driver ICs Reversible motor driver BA6286 / BA6286N The BA6286 and BA6286N are reversible-motor drivers with a maximum output current of 1.0A. Two logic inputs allow four output modes: forward, reverse, stop (idling), and brake. A built-in power saving circuit suppresses current consumption when the motor is in stop mode. FApplications VCRs and audio equipment in general FFeatures 1) Logic and power sections have separate ground pins; this allows the IC to drive speed-variable, reversible motors by connecting an electronic governor circuit. 2) Built-in power saving circuit suppresses the stop mode current dissipation. FAbsolute maximum ratings (Ta = 25_C) 3) Output voltage can be set arbitrarily with the VREF pin. 4) Interfaces with TTL devices. 5) Built-in thermal shutdown circuit. FRecommended operating conditions (Ta = 25_C) 432 Motor driver ICs FBlock diagram BA6286 / BA6286N FPin descriptions FInput / output circuits 433 Motor driver ICs BA6286 / BA6286N FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 9V, VM = 9V, VREF = 9V) FMeasurement circuit 434 Motor driver ICs FCircuit operation (1) Input section The four output modes are controlled by two logic inputs. Current flows from OUT1 to OUT2 when FIN is HIGH and RIN is LOW, and from OUT2 to OUT1 when RIN is HIGH and FIN is LOW (refer to the truth table). The input circuit can be operated by a logic circuit with a current capacity of 120 X 170µA. (2) Output section Current flows f...