BA6220

Motor driver ICs General use electronic governor BA6220 The BA6220 is a monolithic IC designed for controlling the speed of general-purpose DC motors. The IC consists of a reference voltage generator, current multiplier, comparator, and start-up circuit. The speed of DC motor is controlled by detecting the counter-electromotive force generated by the motor. Various DC motors can be driven by changing the external constants. A large power dissipation is allowed by grounding the pin connected with the IC substrate. FApplications Radio cassette tape recorders FFeatures 1) Wide range of operating voltage. (3.5X16V) 2) Large starting torque at low supply voltage. 3) Large power dissipation allowable by using the PCB as a heat sink. 4) Various DC motors can be driven by changing the external constants. FBlock diagram FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 517 Motor driver ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC = 12V) BA6220 FMeasurement circuits FApplication example 518 Motor driver ICs FExternal dimensions (Units: mm) BA6220 519 ...