MC34063A Datasheet, PDF (1/11 Pages) ON Semiconductor – DC-to-DC CONVERTER CONTROL CIRCUITS

DC-DC Converter Control Circuits
MC34063A
FEATURES
● OUTPUT SWITCH CURRENT IN EXCESS OF 1.5A
● 2% REFERENCE ACCURACY
● LOW QUIESCENT CURRENT:2.5mA(TYP.)
● OPERATING FROM 3V TO 40V
● FREQUENCY OPERATION TO 100KHz
● ACTIVE CURRENT LIMITING
● MOISTURE SENSITIVITY LEVEL 3
● MC34063AG is Halogen Free products
8 SOP/ 8 DIP PIN Configulation
SOP-8 PKG
DIP-8 PKG
APPLICATION
● Battery Chargers
● NICs / Switches / Hubs
● ADSL Modems
● Negative Voltage Power Supplies
Switch
Collector ¹
Switch ₂
Emitter
Timing
Capacitor
3
Ground 4
Driver
8 _Collector
7 Ipk Sense
6 Vcc
5 ^Comparator
Inverting
Input
DESCRIPTION
ORDERING INFORMATION
Device
Package
MC34063AD
MC34063AGD
SOP-8
MC34063AN
DIP-8
The MC34063A series is a monolithic control circuit delivering the main functions for DC-DC voltage
converting.
The device contains an intermal 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 devices series is designed for
Step-Down, Step-Up and Voltage-lnverting applications.
May. 2009 - Rev. 1.2
−1−
HTC