ML34063
ML34063 DC-to-DC Converter Control Circuit
ꢀ Application
ꢀ Features
ꢂ
ꢂ
ꢂ
ꢂ
ꢂ
ꢂ
ꢂ
OperatingVoltagefrom3Vto35V
LowStandbyCurrent
OutputSwitchCurrentupto1.5A
OutputVoltageAdjustable
ꢁ Battery Powered Equipment
ꢁ Palmtops
ꢁ Video Recorders
OperatingFrequencyat100KHz
2%AccuracyVoltageReference
PackageAvailable:PDIP-8(1.25W)&SO-8(625mW)
ꢀ General Description
ꢀ Block Diagram
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.
Driver
8
1
Collector (DRIC)
Switch Collector (SC)
Q
S
R
2
Switch Emitter (SE)
7
3
Ipk
CT
Ipk Sense (IPK)
Timing Capacitor (CT)
Oscillator
6
VCC
1.25V
+
Comparator
Voltage Reference
4
GND
Comparator
5
Inverting Input (CII)
ꢀ Ordering Information
ꢀ Pin Configuration
Driver
8
Part Number
ML34063NG
ML34063MG
ML34063N
Package
Switch Collector (SC)
Switch Emitter (SE)
1
2
Collector (DRIC)
PDIP-8 (PB Free)
SO-8 (PB Free)
PDIP-8
7
Ipk Sense (IPK)
6
5
VCC
Timing Capacitor (CT)
GND
3
4
Comparator
Inverting Input (CII)
ML34063M
SO-8
ML34063 (Top View)
P1/5
Rev B, June 2005
MINILOGIC [ MINILOGIC DEVICE CORPORATION LIMITED ]
