Tiny Package, 1.3MHz, Step-up DC/DC Converter
The RT9268 is a compact, 1.3MHz, step-up DC/DC
converter with a current mode PWM control loop,
providing a stable and efficient operation without external
The high switching frequency makes RT9268 suitable
for ADSL applications providing sufficient output current
for variant types of line drivers. This device is available
in space-saving SOT-23-6 package.
The output voltage is set with 2 external resistors. Both
internal 2A switch and driver for driving external power
devices (NMOS or NPN) are provided.
E : SOT-23-6
Operating Temperature Range
C : Commercial Standard
P : Pb Free with Commercial Standard
RichTek Pb-free 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.
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
z 1.3MHz Switching Frequency
z Below 2V Low Start-up Input Voltage
z Sufficient Supply Capability for Supplying XDSL
z Zero Shutdown Mode Supply Current
z Providing Flexibility for Using Internal and External
z Small SOT-23-6 Package
z RoHS Compliant and 100% Lead (Pb)-Free
z XDSL Line Drivers
z USB Devices
z PCMCIA Cards
z Mini-PCI Cards
FB VDD LX
EN EXT GND
Note : There is no pin1 indicator on top mark for SOT-23-6
type, and pin 1 will be lower left pin when reading top mark
from left to right.
DS9268-06 March 2005