ML34063
ML34063 DC-to-DC Converter Control Circuit
Application
Battery Powered Equipment
Palmtops
Video Recorders
Features
Operating V
oltage from 3V to 35V
Low Standby Current
Output Switch Current up to 1.5A
Output V
oltage Adjustable
Operating Frequency at 100KHz
2% Accuracy V
oltage 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)
S
Q
1
Switch Collector (SC)
R
2
Switch Emitter (SE)
7
Ipk Sense (IPK)
Ipk
CT
3
Timing Capacitor (CT)
Oscillator
6
VCC
1.25V
Voltage Reference
+
Comparator
4
Comparator
5
Inverting Input (CII)
GND
Ordering Information
Part Number
ML34063NG
ML34063MG
ML34063N
ML34063M
Package
PDIP-8 (PB Free)
SO-8 (PB Free)
PDIP-8
Pin Configuration
Switch Collector (SC)
Switch Emitter (SE)
1
2
8
7
Driver
Collector (DRIC)
Ipk Sense (IPK)
VCC
Comparator
Inverting Input (CII)
Timing Capacitor (CT)
GND
3
4
6
5
SO-8
ML34063 (Top View)
P1/5
Rev B, June 2005
MINILOGIC [ MINILOGIC DEVICE CORPORATION LIMITED ]
