13
LNBH23L (U6)
13.1
Description
Intended for analog and digital satellite receivers,the LNBH23L is a monolithic voltage
regulator
and interface IC, assembled in QFN32 5 x 5 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.
13.2
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
•
Auxiliary modulation input (EXTM pin) facilitates DiSEqC™ 1.X encoding
•
Accurate built-in 22 kHz tone generator suits widely accepted standards
•
Low-drop post regulator and high efficiency step-up PWM with integrated power
NMOS allow low power losses
•
Overload and over-temperature internal protections with I²C diagnostic bits
•
LNB short circuit dynamic protection
•
+/- 4 kV ESD tolerant on output power pins
Summary of Contents for VES1.1E
Page 21: ...5 1 Power management Power Management with Adaptor Power Management with PW25 PW26 ...
Page 22: ... Power Management with IPS16 IPS17 IPS60 PW05 Power Management with PW03 PW04 PW07 ...
Page 27: ...6 2 MSTAR block diagram ...
Page 40: ... Block Diagram of M88DS3002 14 3 Pin Assignment ...
Page 44: ......
Page 49: ...22 Connectors 22 1 SCART SC1 22 2 HDMI CN707 CN708 ...
Page 50: ... 22 3 VGA CN711 15 14 VERTICALSYNC 15 DOC CLOCK _ ...
Page 68: ......
Page 78: ...27 2 PSU ...
Page 79: ......