Fujitsu MB3759
The MB3759 is a control IC for constant-frequency pulse width modulated switching regulators. The IC contains most of the functions required for switching regulator control circuits. This reduces both the component count and assembly work.APPLICATIONS
BIPOLAR Switching Regulator Controller (Switchable between push-pull and single-end functions) MB3759 sDESCRIPTION
sFEATURES
●●
●
●
●
●
● Drives a 200 mA load Can be set to push-pull or single-end operation Prevents double pulses Adjustable dead-time Error amplifier has wide common phase input range Built in a circuit to prevent misoperation due to low power supply voltage. Built in an internal 5 V reference voltage with superior voltage reduction characteristics s PACKAGES 16-pin plastic DIP 16-pin ceramic DIP 16-pin plastic SOP (DIP-16P-M04) (DIP-16C-C01) (FPT-16P-M06) MB3759 s PIN ASSIGNMENT (TOP VIEW) +IN1 1 16 +IN2 15 −IN2 14 VREF 13 OC 12 VCC 11 C2 10 E2 9 E1 (DIP-16P-M04) (DIP-16C-C01) (FPT-16P-M06) −IN1 2 FB 3 DT 4 CT 5 RT 6 GND 7 C1 8 s BLOCK DIAGRAM Output control OC 13 RT 6 CT 5 OSC T Q Q 8 9 C1 E1 = 0.2 V Dead time control DT 4 11 C2 10 E2 Error amp.1 +IN1 1 −IN1 2 +IN2 16 −IN2 15 + A1 − + − 12 VCC VREF GND PMW comparator Reference regurator 14 7 A2 Error am...