LNBH26S:Dual LNB supply and control IC with step-up and I²C interface

Intended for analog and digital dual satellite receivers/Sat-TV, and Sat-PC cards, the LNBH26S is a monolithic voltage regulator and interface IC, assembled in QFN24 4x4 specifically designed to provide the 13/18 V power supply and the 22 kHz tone signaling to the LNB down-converter in the antenna dishes or to the multi-switch box. In this application field, it offers a complete solution for dual tuner satellite receivers 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% @ 0.5 A)
  • Selectable output current limit by external resistor
  • Compliant with main satellite receiver output voltage specification (15 programmable levels)
  • Accurate built-in 22 kHz tone generator suits widely accepted standards
  • 22 kHz tone waveform integrity guaranteed at no-load condition as well
  • Low drop post regulator and high efficiency step-up PWM with integrated power NMOS allowing low power losses
  • LPM function (low power mode) to reduce dissipation
  • Overload and overtemperature internal protection with I²C diagnostic bits
  • LNB short-circuit dynamic protection
  • +/- 4 kV ESD tolerant on output power pins
产品规格
DescriptionVersionSize
DS8975: Dual LNBS supply and control IC with step-up and I²C interface3.01 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-LNBH05STPower supply evaluation board for LNB based on the LNBH26S
STEVAL-LNBH06STPower supply evaluation board for LNB based on the LNBH26S
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
LNBH26SPQRQFN-24LTape And Reel0.7951000NECEAR99-
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
LNBH26SPQRQFN-24LIndustrialEcopack2md_nd-wspc-vfqfpn-wspc-4x4x1.0-wspc-24-wspc-pitch-wspc-0.5_ryndux68ab5-wspc-(lnbh26spqr)-wspc-wcp-wspc-ver2_signed.pdf
md_nd-wspc-vfqfpn-wspc-4x4x1.0-wspc-24-wspc-pitch-wspc-0.5_ryndux68ab5-wspc-(lnbh26spqr)-wspc-wcp-wspc-ver2.xml
Dual LNBS supply and control IC with step-up and I²C interface LNBH26S
Very low drop voltage regulators with inhibit KFXX
3 A DC step-down switching regulator ST1S40
md_nd-wspc-vfqfpn-wspc-4x4x1.0-wspc-24-wspc-pitch-wspc-0.5_ryndux68ab5-wspc-(lnbh26spqr)-wspc-wcp-wspc-ver2_signed.pdf LNBH26S
md_nd-wspc-vfqfpn-wspc-4x4x1.0-wspc-24-wspc-pitch-wspc-0.5_ryndux68ab5-wspc-(lnbh26spqr)-wspc-wcp-wspc-ver2.xml LNBH26S