LNBP8L - LNBP9L LNBP10L - LNBP11L LNB supply and control voltage regulator Preliminary data Features Simplest integrated solution for LNB remote supply and control 500 mA guaranteed output current Dual input supply for reducing power dissipation (DFN package) 3-state function to enable/disable and select IPPAK DFN8 (5 x 6 mm) the output voltage level through a single pin Fast oscillator startup for DiSEq encoding (LNBP9L/11L versions) supplied at 22 V (min.). Additionally, the External 22 kHz modulation input pin LNBP10L/11L versions have the LLC pin to (LNBP8L/10L versions) increment the selected output voltage value by 1 V (typ.) to compensate for the excess voltage Cable length compensation, LLC pin drop along the coaxial cable (LLC pin HIGH). (LNBP10L, LNBP11L versions) An analog 22 kHz modulation input pin (EXTM) is Short-circuit and over-temperature protection available in the LNBP8L and LNBP10L versions. LNB overload and short-circuit dynamic An appropriate DC blocking capacitor must be protection (LNBP10L, LNBP11L versions) used to couple the modulating signal source to Available in DFN8 (5 x 6 mm) and IPPAK the EXTM pin. The LNBP10L/11L versions are packages also equipped with over-current dynamic protection: as soon as an overload is detected the output is shut down for the time T which is Description OFF, determined by the capacitor connected between Intended for analog and digital satellite receivers, the CEXT pin and GND. After the time has the LNBP is a monolithic linear voltage regulator, elapsed, the output is resumed for a time T = ON assembled in the DFN8 5x6 and IPPAK packages, (1/12)*T (typ.). If the overload is still present, OFF specifically designed to provide the powering the protection circuit will cycle again through T OFF voltages and the interfacing signals to the LNB and T until the overload is removed. A typical ON down-converter. The regulator output can be logic T +T value is 1100 ms when a 4.7 F ON OFF controlled for 13 V or 18 V (typ.) by means of the external capacitor is used on the C . This EXT EN/VSEL 3-state pin for remotely controlling the dynamic operation can greatly reduce the power LNB. When the IC is powered and put in standby dissipation in short-circuit condition, while (EN/VSEL pin at high impedance), the regulator ensuring excellent power-on startup even with output is disabled. In order to reduce power highly capacitive loads on the LNB outputs. dissipation, the LNBP10L/11L versions (on DFN The device is packaged in the IPPAK for through- package) feature 2 supply inputs: V and V . hole mounting and in the DFN8 5x6 for surface CC1 CC2 These pins must be powered, respectively, at 15 mounting. Both package solutions are offered in V (min.) and 22 V (min.), and an internal switch two versions: with ten pins (LNBP9L/11L) to use will automatically select the appropriate supply with the integrated 22 kHz tone generator, or with voltage according to the selected output voltage. the EXTM pin (LNBP8L/10L) to use external 22 The LNBP8L/9L versions (in the IPPAK package) kHz sources. All versions have built-in thermal have only one supply input pin, which must be protection to prevent overheating damage. November 2008 Rev 1 1/21 This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change www.st.com 21 without notice.Contents LNBP8L - LNBP9L - LNBP10L - LNBP11L Contents 1 Diagram . 3 2 Pin configuration . 4 3 Maximum ratings 5 4 Electrical characteristics . 6 5 Typical application circuits . 8 6 Detailed description and application hints . 9 6.1 Input voltage protection 10 6.2 Single supply for the DFN package . 11 6.3 IPPAK mounting and thermal considerations 11 7 Typical performance characteristics . 13 8 Package mechanical data 16 9 Ordering information . 19 10 Revision history . 20 2/21