LNBH23:LNBs supply and control IC with step-up and I2C interface

Intended for analog and digital satellite receivers/sat-TV, sat-PC cards, the LNBH23 is a monolithic voltage regulator and interface IC, assembled in PowerSSO-24 ePAD and QFN32 (5 x 5 mm.) ePAD, 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.

Key Features

  • Complete interface between LNB and I²C bus
  • Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93% @ 0.75 A), with integrated NMOS
  • Selectable output current limit by external resistor
  • Compliant with main satellite receiver systems specifications
  • New accurate built-in 22 kHz tone generator suits widely accepted standards (patent pending)
  • Fast oscillator start-up facilitates DiSEqC™ encoding
  • Built-in 22 kHz tone detector supports bi-directional DiSEqC™ 2.0
  • Very low-drop post regulator and high efficiency step-up PWM with integrated power NMOS allow low power losses
  • Two output pins suitable to by-pass the output R-L filter and avoid any tone distortion (R-L filter as per DiSEqC™ 2.0 specs, see typ. application circuits)
  • Overload and over-temperature internal protections with I²C diagnostic bits
  • Output voltage and output current level diagnostic feedback by I²C bits
  • LNB short circuit dynamic protection
  • ± 4 kV ESD tolerant on output power pins
产品规格
DescriptionVersionSize
DS5188: LNBs supply and control IC with step-up and I²C interface8.0445 KB
应用手册
DescriptionVersionSize
AN2713: LNB power supply based on the LNBH23 supply and control IC with step-up and I²C interface1.11 MB
手册
DescriptionVersionSize
Brochure Power management guide05.20167 MB
Peripheral semiconductors for set-top box applications4.3633 KB
解决方案评估工具
型号制造商Description
STEVAL-CBL005V1LNB power supply demonstration board based on the LNBH23
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
LNBH23QTRVFQFPN 32 5x5x1.0Tape And Reel1.4381000NECEAR99MALAYSIA
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
LNBH23QTRVFQFPN 32 5x5x1.0IndustrialEcopack2md_vfqfpn-wspc-5x5x1.0-wspc-32l-wspc-pitch-wspc-0.5_hy42-wspc-um90j51_vers2_sdm_signed.pdf
md_vfqfpn-wspc-5x5x1.0-wspc-32l-wspc-pitch-wspc-0.5_hy42-wspc-um90j51_vers2.xml
LNBs supply and control IC with step-up and I²C interface LNBH23
circuit_diagram_13356_thumbnail.png LNBH23
LNB power supply based on the LNBH23 supply and control IC with step-up and I²C interface LNBH23
Very low drop voltage regulators with inhibit KFXX
3 A DC step-down switching regulator ST1S40
md_vfqfpn-wspc-5x5x1.0-wspc-32l-wspc-pitch-wspc-0.5_hy42-wspc-um90j51_vers2_sdm_signed.pdf LNBH23
md_vfqfpn-wspc-5x5x1.0-wspc-32l-wspc-pitch-wspc-0.5_hy42-wspc-um90j51_vers2.xml LNBH23