MC34063 dc/dc converter control circuit

What is for sale: MC34063 dc/dc converter control circuit

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These are new old stock parts.
DC/DC CONVERTER CONTROL CIRCUITS
OUTPUT SWITCH CURRENT IN EXCESS OF 1.5A
LOW QUIESCENT CURRENT: 2.5mA (TYP.)
The MC34063A/E series is a monolithic control circuit delivering the main functions for DC/DC voltage converting.
The device contains an internal temperature compensated reference, comparator, duty cycle controlled oscillator with an active current limit circuit, driver and high current output switch.
Output voltage is adjustable through two external resistors with a 2% reference accuracy.
Employing a minimum number of external components the MC34063A/E devices series is designed for Step-Down, Step-Up and Voltage-Inverting applications.
In most cases I have more of these parts. If you need more, I can list them.
If you have any questions please ask.
California sales are taxable at 7.75% unless resale number is on file and verified.