LNBH24PPR datasheet(1/30 Pages) STMICROELECTRONICS

部件名	LNBH24PPR

功能描述	Dual LNB supply and control IC with step-up and I2C interface

PDF	30 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 30 page

February 2008

Rev 1

1/30

30

LNBH24

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

Features

■ Complete interface between LNBS 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 through external

resistor

■ Compliant with main satellite receivers output

voltage specification

■ New accurate built-in 22 kHz tone generator

meets 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

N-MOS allow low power losses

■ Two output pins suitable for bypassing the

output R-L filter and avoiding 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

Description

Intended for analog and digital DUAL Satellite

receivers/Sat-TV, sat-PC cards, the LNBH24 is a

monolithic voltage regulator and interface IC,

assembled in PowerSSO-36 ePad, specifically

designed to provide the 13/18 V power supply and

the 22 kHz tone signalling for two independent

LNB down-converters in the antenna dishes

and/or multi-switch box. In this application field, it

offers a dual tuner STBs with extremely low

component count, low power dissipation together

with simple design and I2C standard interfacing.

PowerSSO-36 (ePad)

Table 1.

Device summary

Order code

Package

Packaging

LNBH24PPR

PowerSSO-36 (Exposed pad)

Tape and reel

www.st.com

类似零件编号 - LNBH24PPR

制造商	部件名	数据表	功能描述
STMicroelectronics	LNBH24PPR	438Kb / 30P	Dual LNB supply and control IC with step-up and I²C interface 27-Aug-2008

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类似说明 - LNBH24PPR

制造商	部件名	数据表	功能描述
STMicroelectronics	LNBS21	637Kb / 19P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE Nov-2002
	LNBH221	515Kb / 18P	DUAL LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE Apr-2004
	LNBH21	493Kb / 20P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE Apr-2004
	LNBEH21	588Kb / 22P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND IC INTERFACE 05-Jul-2004
	LNBS21	695Kb / 21P	LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE 05-Oct-2004
	LNBH221	654Kb / 27P	Dual LNB supply and control IC with Step-Up converter and I2C interface 23-Feb-2006
	LNBH24_0808	438Kb / 30P	Dual LNB supply and control IC with step-up and I²C interface 27-Aug-2008
	LNBH25LPQR	909Kb / 28P	LNB supply and control IC with step-up and I2C interface 15-Feb-2012
	LNBH23LQTR	483Kb / 25P	LNB supply and control IC with step-up and I2C interface 29-Nov-2010
	LNBH25S	1Mb / 37P	LNB supply and control IC with step-up and IC interface 24-Mar-2015

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