TK11822/11823
DC-DC CONVERTER
FEATURES
s
Very Low Noise
s
Low Operating Voltage Range
s
Few External Components
s
Wide Supply Voltage Range
s
Sinewave Oscillation
s
Selectable Output Voltages
APPLICATIONS
s
Headphone Stereos
s
Pagers
s
Mobile Wireless Equipment
s
Electronic Diaries
s
Other Battery-powered Equipment
s
LCD TV's
DESCRIPTION
The TK11822M and TK11823M are booster-type DC-DC
converters developed principally for use as power supplies
to drive variable capacitance diodes. Both products are low
power output types, suitable for operation at low voltages.
To suppress AM band noise, they use high frequency sine
wave oscillation. Both products are available in two output
voltages, allowing the user to select the most efficient
voltage for the equipment. The products have built-in rec-
tifier diodes and small packages, contributing to equipment
miniaturization.
TK11822/23M
EMITTER
R3
1
2
3
6
5
4
VIN
GND
VO
BASE
DA
ORDERING INFORMATION
TK11822M
TK11823M
BLOCK DIAGRAM
Tape/Reel Code
VO
4
3
DA
TAPE/REEL CODE
BX:
TL:
Bulk/Bag
Tape Left
GND
5
Reference
Voltage
Feedback
Control
2
BASE
VIN
6
1
EMITT
March 19, 1996 TOKO, Inc.
Page 1
TOKO [ TOKO, INC ]
