LNBEH21 Datasheet PDF | STMicroelectronics

STMicroelectronics LNBEH21

the LNBEH21 is a monolithic voltage regulator and interface IC, assembled in POWER SO-20, specifically designed to provide the 13/18V power supply and the 22KHz tone signalling to the LNB downconverter in the antenna or to the multiswitch box. The LNBEH21 supports both methods of communication currently used, 13/18V Control Word Communication Mode and DiSEqCTM communication.

Part No.	LNBEH21
Datasheet	LNBEH21 Download
Manufacturer	STMicroelectronics
Description	LNB SUPPLY AND CONTROLLER
Buy	Stock & Price

DESCRIPTION

Intended for analog and digital satellite STB receivers/SatTV, sets/PC cards, In this application field, it offers a complete solution with extremely low component count, low power dissipation together with simple design and I2CTM standard interfacing. Pro Gate te Sense LNBEH21 Step-up PWM Controller Vup-Feedback ole Vup Obs Vcc Preregul.+ U.V.lockout +P.ON res. VoTX VoRX Byp Linear Post-reg ISEL +Modulator +Protections EXTM SDA SCL ADDR V Select I²C interf. Enable 22KHz Oscill. Diagnostics Tone Detector DETIN TEN/VSEL OM=low Tone control 13/18V control OM=High Echo-pulses control TRISE= TFALL = 500µs DSQOUT July 2004 Rev. 1 1/22 LNBEH21 Table 1: Ordering Codes TYPE LNBEH21 Table 2:

ABSOLUTE MAXIMUM RATINGS

PowerSO-20 (Tube) LNBEH21PD PowerSO-20 (Tape & Reel) LNBEH21PD-TR Symbol Parameter Value Unit VCC DC Input Voltage -0.3 to 16 V VUP DC Input Voltage -03 to 25 V IO Output Current Internally Limited mA VOTX/RX DC Output Pins Voltage -0.3 to 25 V VI Logic Input Voltage (SD...