MC34063AB Datasheet, PDF (1/23 Pages) STMicroelectronics – DC/DC converter control circuits

MC34063AB - MC34063AC
MC34063EB - MC34063EC
DC/DC converter control circuits
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
Description
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
DIP-8
SO-8
designed for step-down, step-up and voltage-
inverting applications.
Table 1. Device summary
Order codes
DIP-8
MC34063ABN ⁽¹⁾
MC34063ACN ⁽¹⁾
MC34063EBN
MC34063ECN
1. The "A" version is not recommended for new designs.
November 2007
Rev 10
SO-8
MC34063ABD-TR
MC34063ACD-TR
MC34063EBD-TR
MC34063ECD-TR
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