MC34063 DC-DC Buck-Boost Regulator

Description

MC34063A, DC-DC Buck Boost Regulator IC, Vin 3-40V, Vout 1.5-30V 1.5A, SOP8 The MC34063 has a wide input supply range between 3V to 40 Volt, It can provide high output switch current upto 1.5A we need to provide specific inductor. It can provide adjustable output voltage and has short circuit current limiting and low standby current. By using few external components we can implement this IC into buck, boost and inverting topologies. Since the regulation occurs through switching it is very efficient than linear circuits. Quick Spec Type: DC-DC Converter IC (Buck, Boost and Inverter) Vin Range: 3V to 40V Vout Range: 1.25V to 40V Current Capability: 1.5A (maximum) Switching Frequency: 100KHz Short Circuit current Limiting Footprint: SOP8 Pin Functions Resources MC34063 Datasheet Design Example 1 Formula Vout = 1.25(1+(R2 / R1) If POT R2 = 50K then Vout = 1.25(1+ (R2 / R1)) = 1.25 ( 1 + (50k/2.2k)) = 29.65V If POT R2 = 0 the Vout = 1.25(1+ (R2 / R1)) = 1.25 ( 1 + (0/2.2k)) = 2.25 (3V Practical) Note: Place every components as close as possible to the IC. Online Calculator For Calculations use switch Freq up 100Khz MC34063 Online Calculator Nomad – Alternative Online Calculator