MC34063AB, MC34063AC, MC34063EB, MC34063EC DC-DC converter control circuits Datasheet - production data Description The MC34063A/E series is a monolithic control circuit which delivers 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. DIP-8 SO-8 Output voltage is adjustable through two external resistors with a 2% reference accuracy. Employing a minimum number of external components, the MC34063A/E device series is designed for step-down, step-up and voltage- inverting applications. Features Output switch current in excess of 1.5 A 2 % reference accuracy Low quiescent current: 2.5 mA (typ.) Operating from 3 V to 40 V Frequency operation to 100 kHz Active current limiting Table 1. Device summary Order codes DIP-8 SO-8 MC34063ABN MC34063ABD-TR MC34063ACN MC34063ACD-TR MC34063EBN MC34063EBD-TR MC34063ECN MC34063ECD-TR February 2020 DocID5257 Rev 12 1/23 This is information on a product in full production. www.st.com 23Contents MC34063AB, MC34063AC, MC34063EB, MC34063EC Contents 1 Diagram . 3 2 Pin configuration 4 3 Maximum ratings 5 4 Electrical characteristics . 6 5 Typical performance characteristics 8 6 Typical application circuit . 10 7 Package mechanical data 18 8 Revision history . 22 2/23 DocID5257 Rev 12