LNBH25 datasheet(1/34 Pages) STMICROELECTRONICS

Part #	LNBH25

Description	Selectable output current limit by external resistor

PDF	34 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

1 / 34 page

February 2012

Doc ID 022433 Rev 4

1/34

34

LNBH25

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

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 receivers output

voltage specification (15 programmable levels)

■ Accurate built-in 22 kHz tone generator suits

widely accepted standards

■ 22 kHz tone waveform integrity guaranteed

also at no load condition

■ Low-drop post regulator and high efficiency

step-up PWM with integrated power N-MOS

allowing low power losses

■ LPM function (low power mode) to reduce

dissipation

■ Overload and overtemperature internal

protections with I²C diagnostic bits

■ LNB short-circuit dynamic protection

■ +/- 4 kV ESD tolerant on output power pins

Applications

■ STB satellite receivers

■ TV satellite receivers

■ PC card satellite receivers

Description

Intended for analog and digital satellite

receivers/Sat-TV and Sat-PC cards, the LNBH25

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 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 and low power

dissipation together with a simple design and I²C

standard interfacing.

QFN24 (4 x 4 mm)

Table 1.

Device summary

Order code

Package

Packaging

LNBH25PQR

QFN24 (4 x 4)

Tape and reel

www.st.com

Similar Part No. - LNBH25

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	LNBH25L	909Kb / 28P	LNB supply and control IC with step-up and I2C interface 15-Feb-2012
	LNBH25LPQR	909Kb / 28P	LNB supply and control IC with step-up and I2C interface 15-Feb-2012
	LNBH25LS	1Mb / 30P	LNB supply and control IC with step-up and I²C interface March 2016 Rev 3
	LNBH25LSPQR	1Mb / 30P	LNB supply and control IC with step-up and I²C interface March 2016 Rev 3
	LNBH25S	1Mb / 37P	LNB supply and control IC with step-up and IC interface 24-Mar-2015

More results

Similar Description - LNBH25

Manufacturer	Part #	Datasheet	Description
Fairchild Semiconductor	FPF2300	1Mb / 19P	Dual-Output Current Limit Switch
Maxim Integrated Produc...	MAX4772	302Kb / 10P	200mA/500mA Selectable Current-Limit Switches 19-2926; Rev 0; 7/03
Fairchild Semiconductor	FPF2310	1Mb / 17P	Dual-Output Adjustable Current Limit Switch
International Rectifier	IR1153S	386Kb / 20P	Cycle by cycle peak current limit
M/A-COM Technology Solu...	MAAL-010704	1Mb / 15P	Adjustable Current with an External Resistor
Silicon Touch Technolog...	LS521	711Kb / 12P	Tunable illumination sensitivity by an external resistor
Texas Instruments	PT5071-12V	150Kb / 4P	Output Current Limit
STMicroelectronics	LNBH23L	504Kb / 25P	Selectable output current limit by external resistor 29-Nov-2010
	LNBH26L	944Kb / 28P	Selectable output current limit by external resistor 01-Mar-2012
	LNBH30	830Kb / 27P	Selectable output current limit by external resistor 19-Mar-2015

More results

LNBH25 Datasheet(PDF) 1 Page - STMicroelectronics

LNBH25 Datasheet(HTML) 1 Page - STMicroelectronics

Similar Part No. - LNBH25

Similar Description - LNBH25

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

Datasheet Download

Link URL