STMicroelectronics AN3352 LNBH24L Dual LNB Power Supply Application Note

This is an application note for LNBH24L supply and control IC, introducing the features and usage of LNBH24L.

Brand: STMicroelectronics
Category: Other Electronics
Document type: Application Note
Language: English
Pages: 26
File format: PDF
File size: 1.3 MB
Published: 06 August, 2012
Updated: 30 September, 2023
Model: LNBH24L
MD5 checksum: 974453D3F14019B38042880A3C9C27D7
PDF: STMicroelectronics AN3352 LNBH24L Dual LNB Power Supply Application Note PDF

About this manual

This application note provides additional information and suggestions for the correct use of the LNBH24L device, an integrated solution for supplying and interfacing two independent LNB down-converters in antenna dishes and multi-switch boxes. The device includes a fully integrated step-up DC-DC converter functioning with a single input voltage supply ranging from 8 V to 15 V, along with an I2C bus interface.

What's inside

Block diagram and pin function description
Step-up controller
Pre-regulator block
I2C interface and diagnostic
DiSEqC implementation
Component selection guidelines
Layout guidelines
Startup procedure

Specifications

Input voltage range	8 V to 15 V
Undervoltage lockout threshold	6.7 V typ
Power-on reset threshold	7.3 V typ
Overtemperature flag threshold	150 °C
Package type	exposed pad QFN-32

Frequently asked questions

What is the input voltage range for the LNBH24L?

The device functions with a single input voltage supply ranging from 8 V to 15 V.

How many LNB down-converters can the LNBH24L supply?

It is an integrated solution for supplying and interfacing two independent LNB down-converters.

What interface is used to control the main functions of the LNBH24L?

The main functions are controlled via the I2C bus by writing to the system register.

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