ML34063 Datasheet, PDF (1/5 Pages) Minilogic Device Corporation Limited – DC-to-DC Converter Control Circuit

ML34063
ML34063 DC-to-DC Converter Control Circuit
Application
Battery Powered Equipment
Palmtops
Video Recorders
Features
Operating Voltage from 3V to 35V
Low Standby Current
Output Switch Current up to 1.5A
Output VoltageAdjustable
Operating Frequency at 100KHz
2%Accuracy Voltage Reference
PackageAvailable: PDIP-8 (1.25W) & SO-8 (625mW)
General Description
The ML34063 is a DC/DC converter. It consists of
an internal temperature compensated voltage
reference, comparator, controlled duty cycle
oscillator with an active current limit circuit, driver
and high current output switch. It can be used in
step-down, step-up and voltage-inverting
applications with a minimum number of external
components.
Block Diagram
Driver
8
Collector (DRIC)
7
Ipk Sense (IPK)
6
VCC
Comparator
5
Inverting Input (CII)
S
Q
R
Ipk
CT
Oscillator
1
Switch Collector (SC)
2
Switch Emitter (SE)
3
Timing Capacitor (CT)
+
Comparator
1.25V
Voltage Reference
4
GND
Ordering Information
Pin Configuration
Part Number
ML34063NG
ML34063MG
ML34063N
ML34063M
Package
PDIP-8 (PB Free)
SO-8 (PB Free)
PDIP-8
SO-8
Switch Collector (SC) 1
Switch Emitter (SE) 2
8 ^Driver
Collector (DRIC)
7 Ipk Sense (IPK)
Timing Capacitor (CT) 3
GND 4
6 VCC
5 ^Comparator
Inverting Input (CII)
ML34063 (Top View)
P1/5
Rev B, June 2005