LNBS21

Pinout




Specifications

Symbol	Parameter	Value	Unit
VCC	DC Input Voltage	16	V
VUP	DC Input Voltage	25	V
VLT1, VLT2	DC Input Voltage	20	V
IO	Output Current	Internally Limited	mA
VO	DC Output Pin Voltage	-0.3 to 22	V
VI	Logic Input Voltage (SDA, SCL, DSQIN)	0.3 to 7	V
VDETIN	Detector Input Signal Amplitude	2	VPP
VOH	Logic High Output Voltage (DSQOUT)	7	V
ILT	Bypass Switch ON Current	900	mA
VLT	Bypass Switch OFF Voltage	±20	V
IGATE	Gate Current	± 400	mA
VSENSE	Current Sense Voltage	-0.3 to 1	V
VADDRESS	Address Pin Voltage	-0.3 to 7	V
Tstg	Storage Temperature Range	-40 to +150
Top	Operating Junction Temperature Range	-40 to +125

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation der these condition is not implied.

Description

Intended for analog and digital satellite STB receivers/SatTV, sets/PC cards, the LNBS21 is a monolithic voltage regulator and interface IC, assembled in PowerSO-20, specifically designed to provide the power and the 13/18V, 22KHz tone signalling to the LNB downconverter in the antenna or to the multiswitch box. In this application field, it offers a complete solution with extremely low component count, low power dissipation together with simple design and I²C^TM standard interfacing.

This LNBS21 has a built in DC/DC step-up controller that, from a single supply source ranging from 8 to 15V, generates the voltages that let the linear