LNBP8L, LNBP9L LNBP10L, LNBP11L LNB supply and control voltage regulator 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) must be 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 Cable length compensation, LLC pin V (typ.) to compensate for the excess voltage (LNBP10L, LNBP11L versions) drop along the coaxial cable (LLC pin HIGH). 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 OFF, Description 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 (5 x 6) and IPPAK (1/12)*T (typ.). If the overload is still present, OFF packages, specifically designed to provide the the protection circuit will cycle again through T OFF powering voltages and the interfacing signals to and T until the overload is removed. A typical ON the LNB down-converter. The regulator output T +T value is 1100 ms when a 4.7 F ON OFF can be logic controlled for 13 V or 18 V (typ.) by external capacitor is used on the C . This EXT means of the EN/VSEL 3-state pin for remotely dynamic operation can greatly reduce the power controlling the LNB. When the IC is powered and dissipation in short-circuit condition, while put in standby (EN/VSEL pin at high impedance), ensuring excellent power-on startup even with the regulator output is disabled. In order to reduce highly capacitive loads on the LNB outputs. The power dissipation, the LNBP10L/11L versions (on device is packaged in the IPPAK for through-hole DFN package) feature 2 supply inputs: V and mounting and in the DFN8 (5 x 6) for surface CC1 V . These pins must be powered, respectively, mounting. Both package solutions are offered in CC2 at 15 V (min.) and 22 V (min.), and an internal two versions: with ten pins (LNBP9L/11L) to use switch will automatically select the appropriate with the integrated 22 kHz tone generator, or with supply voltage according to the selected output the EXTM pin (LNBP8L/10L) to use external 22 voltage. The LNBP8L/9L versions (in the IPPAK kHz sources. All versions have built-in thermal package) have only one supply input pin, which protection to prevent overheating damage. August 2010 Doc ID 15153 Rev 2 1/21 www.st.com 21Contents 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 . 10 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 Doc ID 15153 Rev 2