TK11806 Datasheet, PDF (1/7 Pages) TOKO, Inc – DC-DC CONVERTER

TK11806
DC-DC CONVERTER
FEATURES
s Very Small Size
s Few External Components
s Wide Input Supply Voltage Range (1.1 to 18 V)
s Six Selectable Output Voltages up to 32 V
s Single Battery Cell Operation
DESCRIPTION
The TK11806 is a low power, low input voltage DC-DC
converter.
APPLICATIONS
s Variable Capacitance and PIN Diode Bias
s Portable Instrumentation
s Radio Control Systems
s Mobile Radios
s Cellular Telephones
s Cordless Telephones
s Fiberoptic Receivers
s Local Area Network (LAN) Receivers
s Battery Operated Equipment
The device has been optimized for variable capacitance
diode and PIN diode bias applications. It generates DC
output voltages ranging from 9.3 V to 32 V in six steps. The
desired output voltage may be selected by simple wire
connections between control pins. The input DC voltage
can be as low as 1.1 V or as high as 18 V.
The device has a built-in relaxation oscillator. The fre-
quency of oscillation is determined by external component
values. The TK11806 has built-in voltage reference and an
array of temperature compensated zener diodes in order to
generate various output voltages with minimum external
part count.
TK11806M
80A621
V _{IN 1}
GND ²
T1 3
T2 4
8 OSC
7 _DA
6 V_O
5 T3
The device is available in an 8-lead plastic surface mount
package (MFP-8).
External inductive components are also available from
TOKO.
ORDERING INFORMATION
TK11806M
Tape/Reel Code
TAPE/REEL CODE
BX: Bulk/Bag
TL: Tape Left
MG: Magazine
BLOCK DIAGRAM
L _EXT
OSC.
8
V_IN S ₁
STARTUP
CIRCUIT
S
S
OSCILLATOR
FEEDBACK
CONTROL
2
GND
7 DA
6 V_O
REF.
VOLTAGE
5 T3
4 T2
3 T1
January, 1996 TOKO, Inc.
1-16-96
Page 1