LNBH23LQTR - STMicroelectronics

Manufacturer Part Number

LNBH23LQTR

Manufacturer

STMicroelectronics

Introduction

The LNBH23LQTR is a specialized power management integrated circuit (PMIC) designed for powering low-noise block downconverters (LNB) in satellite set-top box (STB) applications.

Product Features and Performance

Integrated voltage regulators for two LNB supply and control

Vout1 for 13.4V/Vout2 for 18.4V selectable via I2C

800mA peak output current capability

Built-in 22kHz tone generator for satellite tuning

I2C compatible interface

Thermal shutdown and overcurrent protection

Loss of lock detection

Power-save mode for enhanced power efficiency

Low power dissipation due to step-up/down architecture

Good thermal performance with exposed pad package

Product Advantages

High integration reduces BOM cost and complexity

Dual LNB output switching simplifies circuit design

Embedded diagnostics aid in system reliability

Supports both analog and digital satellite systems

Key Technical Parameters

Voltage - Input: 8V ~ 15V

Number of Outputs: 1

Voltage - Output: 13.4V, 18.4V-switchable

Operating Temperature: 0°C ~ +85°C

Mounting Type: Surface Mount

Package/Case: 32-VFQFN Exposed Pad

Supplier Device Package: 32-QFN (5x5)

Quality and Safety Features

Short-circuit protection

Thermal shutdown feature

Under-voltage lockout (UVLO)

Diagnostic functions for system monitoring

Compatibility

Designed for use in converter circuits within analog and digital satellite STB receivers

Application Areas

Analog and Digital Satellite Set-Top Box (SatTV) Receivers

Satellite Dish LNB Power Supplies

Product Lifecycle

Active status

Non-specified longevity may suggest a stable lifecycle

No indication of nearing discontinuation

Several Key Reasons to Choose This Product

Efficiently powers and controls both analog and digital LNBs

Flexibility with an I2C interface and selectable output voltages

Enhanced system reliability with built-in protections and diagnostics

Compact QFN package suitable for space-constrained applications

STMicroelectronics' reputation for quality and strong technical support