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

           King--- Originator of ANTERWELL, engaged in the IC electronics industry in 1998 and establish ANTERWELL in 2004. The company is located in Shenzhen Huaqiang North, the largest electronic center in Asia. Our main business is the technical development and electronic products import and export business. Currently, we have branches in Hong Kong and Malaysia.

           Up to now. ANTERWELL have more than 1,000,000 types of electronic components in stock. ANTERWELL has become one of the top choices for purchasing IC chips both domestically and internationally. King is a senior IC chip expert, sales engineer, and mentor, leading an elite team with customer first, quality first, honesty, trustworthiness, and mutual benefit. We look forward to cooperate with you to create a better future!

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