LNBH23LQTR LNB supply and control IC with step-up and I2C interface diode rectifier circuit

LNBH23LQTR LNB supply and control IC with step-up and I2C interface diode rectifier circuit

Features

■ Complete interface between LNB and I²C bus

■ Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93% @ 0.5 A)

■ Selectable output current limit by external resistor

■ Compliant with main satellite receivers output voltage specification

■ Auxiliary modulation input (EXTM pin) facilitates DiSEqC™ 1.X encoding

■ Accurate built-in 22 kHz tone generator suits widely accepted standards

■ Low-drop post regulator and high efficiency step-up PWM with integrated power NMOS allow low power losses

■ Overload and over-temperature internal protections with I²C diagnostic bits

■ LNB short circuit dynamic protection

■ ± 4 kV ESD tolerant on output power pins

Description

Intended for analog and digital satellite receivers, the LNBH23L is a monolithic voltage regulator and interface IC, assembled in QFN32 5 x 5 specifically designed to provide the 13 / 18 V power supply and the 22 kHz tone signalling to the LNB down-converter in the antenna dish or to the multi-switch box. In this application field, it offers a complete solution with extremely low component count, low power dissipation together with simple design and I²C standard interfacing.

STOCK LIST

CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electronic components that are hard to find and even obsolete. We have taken pride in our innovation, reliability and service, especially in the semiconductor marketplace.
Our distribution brands include XILINX，ALTERA，ATMEL, INFINEON, ST,SAMSUNG，TEXAS INSTRUMENTS，ON，TOSHIBA，，MICROCHIP，CYPRESS，FREESCALE，etc. We distributes over 200,000 products ranging from semiconductors to resistors, capacitors, diodes, inductors, connectors, transistors, sensors and so on.
Our mission is to meet and exceed all the expecations of what we supply to customers.