A8284
Data Sheet 27448.1
ADVANCE INFORMATION
(Subject to change without notice)
December 22, 2000
TWO-OUTPUT LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR
Intended for analog and digital satellite receivers, the low noise block
A8284SLB converter regulator (LNBR) is a monolithic linear and switching voltage regulator designed to provide power and interface signals to the LNB
OSEL 1
24 EXTM downconverter via the coaxial cable. Because most satellite receivers have two antenna ports, the output voltage of the regulator is available at one of two
OLF 2
23 VINT logic-selectable output terminals (LNBA, LNBB). If the device is in stand-by mode (EN terminal LOW), both regulator outputs are disabled, allowing the
VBULK 3
22 PUMPX antenna downconverters to be supplied and controlled by other satellite
CHARGE PUMP
LNBB 4
YNC 5
GND 6
RGND 7
OSENSE 8
TLNBA 99
CLX 10 BUCK
VOLTAGE CONTROL
AVIN 11 FTCAP 12
REG.
21 VPUMP 20 CPUMP 19 GND 18 GND 17 ENT 16 EN 15 VSEL0 14 VSEL1 13...
