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Regulator ICs www.DataSheet4U.com 2-channel switching regulator controller BA9743AFV The BA9743AFV is a 2-channel switching regulator controller that uses a pulse width modulation (PWM) system. Both channels can be used for DC / DC converter operations including step up, step down, and inverting. Because the IC is compactly packaged, it is best suited for use as a power supply in portable equipment. FApplications DC / DC converters in VCRs, notebook computers, etc. FFeatures 1) Built-in reference voltage current (±1%). 2) Timer latch, short-circuit protection circuit is built in. 3) Circuit to prevent malfunction during low input voltage is built in. FAbsolute maximum ratings (Ta = 25_C) 4) Built-in reference voltage (2.505V) output pin. 5) Rest period is adjustable over the whole range of duty ratio. FRecommended operating conditions (Ta = 25_) 307 Regulator ICs www.DataSheet4U.com FBlock diagram BA9743AFV FPin descriptions 308 Regulator ICs www.DataSheet4U.com FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC = 6V) BA9743AFV 309 Regulator ICs www.DataSheet4U.com FTiming chart BA9743AFV FElectrical characteristic curves 310 Regulator ICs www.DataSheet4U.com BA9743AFV FExternal dimensions (Units: mm) 311