CP34063
1.5A,Step-Up/Down/Inverting Switching Regulators
The
CP34063
Series is a monolithic control circuit containing the
primary functions required for DC–to–DC converters. These devices
consist of an internal temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current limit circuit,
driver and high current output switch. This series was specifically
designed to be incorporated in Step–Down and Step–Up and
Voltage–Inverting applications with a minimum number of external
components.
PDIP–8
8
1
•
•
•
•
•
•
•
Operation from 3.0 V to 40 V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.5 A
Output Voltage Adjustable
Frequency Operation to 100 kHz
Precision 2% Reference
SOP–8
8
1
PIN CONNECTIONS
1
2
8
7
6
5
Drive 8
Collector
S Q
I
pk
7
Sense
R
100
Q2
Q1
1
Switch
Collector
3
4
2
I
pk
Oscillator C
T
V
CC
6
Comparator
+
-
Comparator 5
Inverting
Input
1.25 V
Reference
Regulator
4
(Bottom View)
3
Switch
Emitter
Timing
Capacitor
1 -
Switch Collector
2 -
Switch Emitter
3 -
Timing Capacitor
4 -
Gnd
5 -
Comparator Inverting Input
6 -
Vcc
7 -
Ipk Sense
8 -
Driver Collector
Gnd
This device contains 51 active transistors.
Figure 1. Representative Schematic Diagram
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 1 of 10
Rev 1.1 Jul.18,2003
Fax:886-3-3521052
CERAMATE [ CERAMATE TECHNICAL ]
