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PDF TK11821MMG Data sheet ( Hoja de datos )
| Número de pieza | TK11821MMG | |
| Descripción | DC-DC CONVERTER | |
| Fabricantes | TOKO | |
| Logotipo |  |
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TK11821
DC-DC CONVERTER
FEATURES
s Very Low Noise
s Very Small Size
s Few External Components
s Wide Supply Voltage Range (0.9 to 10 V)
s Sinewave Oscillator
s Selectable Output Voltages
DESCRIPTION
The TK11821 is a low power, low input voltage DC-DC
converter. The device has been optimized for variable
capacitance diode and PIN photodiode bias applications. It
generates 10 Vdc and 24 Vdc output voltages from an input
voltage as low as 0.9 V.
Since the built-in high frequency oscillator generates
sinewaves, the TK11821 produces very low RF interfer-
ence noise. The internal oscillator is capable of operation
at frequencies as high as 6-8 MHz, therefore, interference
filtering is simple and effective. This unique feature makes
the TK11821 ideally suitable for RF and fiber optic receiver
applications.
The device is capable of operation in the 0.9 to 10 V power
supply voltage range.
The output voltage is 24 V when T1 is not connected. When
T1 is connected to VO, the output voltage is set to 10 V.
The TK11821 is available in an 8-pin plastic surface mount
(MFP-8) package. External inductive components are also
available.
ORDERING INFORMATION
TK11821M
Tape/Reel Code
TAPE/REEL CODE
BX: Bulk/Bag
TL: Tape Left
MG: Magazine
APPLICATIONS
s Variable Capacitance and PIN Photodiode 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
TK11821M
OSC 1
82A121
VD 2
BYPASS 3
VO 4
8 VFB
7 GND
6 VIN
5 T1
VIN 6
BLOCK DIAGRAM
VFB OSC VD
5 12
Feedback
Control
4 VO
GND
7
V REF
5 T1
3 BYPASS
January, 1996 TOKO, Inc.
1-30-96
Page 1
1 page  
PACKAGE OUTLINES
MFP-8
85
0.76
TK11821
14
5.0 ± 0.2
e 1.27
Recommended Mount Pad
± 0.2
0.5
+0.1
0.4 -0.01
0.12 M
e
1.27
0.1
± 0.3
6.0
Marking Information
821
Unit:mm
The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO
doesnotassumeanyliabilityarisingfromtheapplicationoruseofanyproductorcircuitdescribedherein,norforanyinfringementsofpatentsorotherrightsofthirdpartieswhichmayresultfromtheuseofitsproducts. Nolicenseisgranted
by implication or otherwise under any patent or patent rights of TOKO, Inc.
TOKO America, Inc.
1250 Feehanville Dr.
Mt. Prospect, IL 60056
Tel: (800) PIK-TOKO
Fax: (847) 699-1194
YOUR LOCAL REPRESENTATIVE IS:
January, 1996 TOKO, Inc.
© 1993 Toko America, Inc.
All Rights Reserved
1-30-96
Order this literature by: IC-109-TK11821
Page 5
Printed in U.S.A.
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet TK11821MMG.PDF ] | |
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