MC34063 boost calculator
After you have entered your requirements on the left, hit the Go button to calculate your component values. If you need to tweak some components, Ct, R1, and the component Tol may be adjusted without hitting Go again.
I also have an ON Semiconductor switching regulator library for schematic symbols here.
There is a example schematic here in DesignWorks format.
MC34063 boost calculator
The device you select will automatically populate the temperature range fields. If your application will use a subset of this range, or you intend to use the part out of specification, adjust your temperature range so output accuracy is correct due to resistor temperature coefficient calculations.
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Manufacturer part numbers supported
Diodes Inc. AP34063
Fairchild KA34063A
Fairchild MC33063 (Obsolete)
Fairchild MC34063A (Obsolete)
ON Semiconductor MC33063AV
ON Semiconductor MC33063A
ON Semiconductor MC34063A
ON Semiconductor NCP3064
ON Semiconductor NCP3064B
ON Semiconductor NCP3065
ON Semiconductor NCP3066
ON Semiconductor NCV33063A
ON Semiconductor NCV3064
ON Semiconductor NCV3065
ON Semiconductor NCV3066
ST Microelectronics MC34063AB
ST Microelectronics MC34063AC
ST Microelectronics MC34063EB
ST Microelectronics MC34063EC
Texas Instruments MC33063A
Texas Instruments MC34063A
If this isn’t enough for you, you might try a full Spice simulation. A Spice model of the MC34063 can be found here. There are several free Spice ports for OS X, a list is here on my simulators page.
9/8/2018: Version 1.4.0 includes a bug fix for the computation of the short circuit sense resistor value.
