LNBH29EPTR

Power Management - Specialized Overview

The LNBH29EPTR is a specialized power management IC from STMicroelectronics, designed for satellite receiver applications. It integrates a low-noise LNB supply controller and a step-up DC-DC converter to provide 13V or 18V power to Low Noise Block downconverters. The device operates from a single 12V input source (8V to 17.5V range) and includes an accurate built-in 22 kHz tone generator for band switching. It features I²C interface control, selectable output current limits via external resistors, and comprehensive protection mechanisms including overload, overtemperature, and short-circuit detection with diagnostic reporting.

Power Management - Specialized Feature Summary

• Integrates high-efficiency step-up DC-DC converter and low-drop post regulator for single-supply LNB powering
• Provides complete I²C bus interface for digital control and status monitoring of the LNB module
• Includes factory-trimmed 22 kHz tone generator ensuring waveform integrity under all load conditions
• Features dynamic short-circuit protection and internal overload/overtemperature safeguards with diagnostic bits

Power Management - Specialized Applications

• Analog and digital satellite receivers
• Satellite TV cards
• Sat-PC cards
• Multi-switch boxes for satellite distribution

Power Management - Specialized Procurement Notes

Verify the specific suffix 'E' in the part number LNBH29EPTR against official datasheets to confirm the presence of the EXTM pin for auxiliary 22 kHz modulation input, as this variant differs functionally from standard versions. Ensure compatibility with QFN-16 packaging requirements and validate that the selected distributor sources genuine STMicroelectronics components to avoid counterfeit risks associated with specialized PMICs.

Power Management - Specialized Selection Notes

Select the LNBH29EPTR when design flexibility for 22 kHz tone modulation is required, indicated by the 'E' suffix which provides the EXTM pin. This component is suitable for designs needing precise I²C control and high efficiency in space-constrained layouts using QFN-16 packages. Consider the integrated power N-MOS and low component count benefits for reducing board size and power dissipation in satellite reception systems.

Power Management - Specialized Part Context

The LNBH29 series represents a monolithic solution for interfacing LNB downconverters in satellite dishes. It combines voltage regulation and signaling functions into a single chip, eliminating the need for multiple discrete components. The EPTR variant specifically denotes the E-series functionality within the LNBH29 family, tailored for advanced control requirements in modern satellite receiving equipment manufactured by STMicroelectronics.

Power Management - Specialized Replacement Considerations

Direct substitutes include other LNBH29 variants such as LNBH29EQTR or LNBH29QTR, depending on whether the EXTM pin functionality is required. Verify package compatibility (QFN-16) and electrical specifications before substitution. Generic LNB controllers may not offer the same level of I²C integration or specific satellite standards compliance.