
January 1999 TOKO, Inc.
Page 1
TK11816, TK11817,
TK11818, TK11819
GND
DK
OSC
VIN
OSCILLATOR
CIRCUIT
RVOLTAGE
CONTROL
VOUT
T1
DC-DC CONVERTER
FEATURES
I
Miniature Package (SOT-23L-6)
I
Few External Components
I
Internal Rectifier and Regulator
I
Wide Input Voltage Range (1.1 to 18 V)
I
Selectable Output Voltages
I
Single Battery Cell Operation
TK11816M
TK11817M
TK11818M
TK11819M
ORDERING INFORMATION
TAPE/REEL CODE
TL: Tape Left
Tape/Reel Code
BLOCK DIAGRAM
DESCRIPTION
The TK1181x series devices generate DC output voltages
ranging from 7.2 to 32 V. Each device provides two
regulated output voltages selectable by a single jumper.
Designed for step-up operation, these devices will operate
with an input voltage as low as 1.1 V, thus allowing single
battery cell operation.
These converters have a built-in relaxation oscillator. The
frequency of operation is determined by external component
values. The built-in rectifier combined with an internal
temperature compensated reference allows stable output
voltages with minimal external components.
These devices are available in a miniature SOT-23L-6
surface mount package. An optimized surface mount
inductor is available from TOKO (P/N: 395GN-0091IB).
APPLICATIONS
I
Variable Capacitance and PIN Diode Bias
I
Portable Instrumentation
I
Radio Control Systems
I
Mobile Radios
I
Cellular Telephones
I
Cordless Telephones
I
Fiber-Optic Receivers
I
Local Area Network (LAN) Receivers
I
Battery Operated Equipment
TK11816 TK11817
TK11818 TK11819
OSC
VIN
VOUT
T1
DK
GND
01S