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LNBH23TPPR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
This is information on a product in full production.
February 2013 Doc ID 13356 Rev 8 1/32
32
LNBH23
LNBs supply and control IC with step-up and I²C interface
Datasheet − production data
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
Description
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.
QFN32 (5 x 5 mm.)
(Exposed pad)
PowerSSO-24
(Exposed pad)
Table 1. Device summary
Order code Package Packaging
LNBH23PPR PowerSSO-24 (Exposed pad) Tape and reel
LNBH23QTR QFN32 (Exposed pad) Tape and reel
www.st.com
Contents LNBH23
2/32 Doc ID 13356 Rev 8
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 DiSEqC™ data encoding and decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 DiSEqC™ 2.0 implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 DiSEqC™ 1.X implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Data encoding by external tone generator (EXTM) . . . . . . . . . . . . . . . . . . 5
2.5 I²C interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.6 Output voltage selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.7 Diagnostic and protection functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.8 Output voltage diagnostic - VMON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.9 22 kHz tone diagnostic - TMON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.10 Minimum output current diagnostic - IMON . . . . . . . . . . . . . . . . . . . . . . . . 6
2.11 Output current limit selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.12 Over-current and short circuit protection and diagnostic . . . . . . . . . . . . . . 7
2.13 Thermal protection and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 I²C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.2 Start and stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3 Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.5 Transmission without acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 LNBH23 software description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.1 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.2 System register (SR, 1 byte) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
LNBH23 Contents
Doc ID 13356 Rev 8 3/32
7.3 Transmitted data (I²C bus write mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.4 Diagnostic received data (I²C read mode) . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5 Power-on I²C interface reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.6 Address pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.7 DiSEqC™ implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

LNBH23TPPR

Mfr. #:
Buy LNBH23TPPR
Manufacturer:
STMicroelectronics
Description:
Power Management Specialized - PMIC LNB supply control IC Step up
Lifecycle:
New from this manufacturer.
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