RT34063A
DC-to-DC Converter Control Circuits
General Description
The RT34063A 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 specially designed to be incorporated in
step-down and step-up and Voltage-inverting applications
with a minimum number of external components.
Features
Operation from 3.0V to 30V Input
Low Standby Current
Current Limiting
Internal Switch Current to 1.5A
Output Voltage Adjustable
Frequency Operation to 100kHz
Precision 2% Reference
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Saver for Cellular Phones
DC-DC Converter Module
Ordering Information
RT34063A
Package Type
N : DIP-8
S : SOP-8
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
SC
SE
TC
GND
2
3
4
Pin Configurations
(TOP VIEW)
8
7
6
5
DRIVER
IPK
VCC
COMP
Note :
RichTek Pb-free and Green products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
100%matte tin (Sn) plating.
DIP-8 / SOP-8
Functional Pin Description
Pin Name
SC
SE
TC
GND
COMP
VCC
IPK
DRIVER
Pin Function
1.5A Switch Collector
Darlington Switch Emitter
Oscillator Timing Capacitor
Power GND
Feedback Comparator Inverting Input
Power Supply Input
Highside Current Sense Input VCC-V
IPK
= 330mV
Driver Collector
DS34063A-13 March 2007
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
