Typical Application External Transistor Connection Circuit for Tc105 Pfm/Pwm Step-Down Dc/Dc Controller At PNP Bipolar Transistor

Typical Application External Transistor Connection Circuit for Tc105 Pfm/Pwm Step-Down Dc/Dc Controller At PNP Bipolar Transistor. The TC105 is a step-down (Buck) switching controller that furnishes output currents of up to 1A (max) while delivering a typical efficiency of 92%