LNBK10 SERIES LNBK20 LNB SUPPLY AND CONTROL VOLTAGE REGULATOR (PARALLEL INTERFACE) ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ REDUCED OUTPUT CURRENT VERSION OF LNBP1X AND LNBP20 SERIES COMPLETE INTERFACE FOR TWO LNBs REMOTE SUPPLY AND CONTROL LNB SELECTION AND STAND-BY FUNCTION BUILT-IN TONE OSCILLATOR FACTORY TRIMMED AT 22KHz FAST OSCILLATOR START-UP FACILITATES DiSEqC ENCODING TWO SUPPLY INPUTS FOR LOWEST DISSIPATION BYPASS FUNCTION FOR SLAVE OPERATION LNB SHORT CIRCUIT PROTECTION AND DIAGNOSTIC AUXILIARY MODULATION INPUT EXTENDS FLEXIBILITY CABLE LENGTH COMPENSATION INTERNAL OVER TEMPERATURE PROTECTION BACKWARD CURRENT PROTECTION DESCRIPTION Intended for analog and digital satellite receivers, the LNBK is a monolithic linear voltage regulator, assembled in Multiwatt-15, PowerSO-20 and PowerSO-10, specifically designed to provide the powering voltages and the interfacing signals to the LNB downconverter situated in the antenna via the coaxial cable. It has the same functionality of the LNBP1X and LNBP20 series, at a reduced output current capability. Since most satellite receivers have two antenna ports, the output voltage of the regulator is available at one of two logic-selectable output pins (LNBA, LNBB). When the IC is powered and put in Stand-by (EN pin LOW), both regulator outputs are disabled to allow the antenna downconverters to be supplied/controlled by others satellite receivers sharing the same coaxial lines. In this occurrence the device will limit at 3 mA (max) the backward current that could flow from LNBA and LNBB output pins to GND. For slave operation in single dish, dual receiver systems, the bypass function is implemented by an electronic switch between the Master Input pin September 1998 Multiwatt-15 10 1 PowerSo-20 PowerSO-10 (MI) and the LNBA pin, thus leaving all LNB powering and control functions to the Master Receiver. This electronic switch is closed when the device is powered and EN pin is LOW. The regulator outputs can be logic controlled to be 13 or 18 V (typ.) by mean of the VSEL pin for remote controlling of LNBs. Additionally, it is possible to increment by 1V (typ.) the selected voltage value to compensate the excess voltage drop along the coaxial cable (LLC pin HIGH). In order to reduce the power dissipation of the device when the lowest output voltage is selected, the regulator has two Supply Input pins VCC1 and VCC2. They must be powered respectively at 16V (min) and 23V (min), and an internal switch automatically will select the suitable supply pin according to the selected output voltage. If adequate heatsink is provided and higher power losses are acceptable, both supply pins can be powered by the same 23V source without affecting any other circuit performance. The ENT (Tone Enable) pin activates the internal oscillator so that the DC output is modulated by a ±0.3 V, 22KHz (typ.) square wave. This internal 1/18 LNBK10 SERIES - LNBK20 oscillator is factory trimmed within a tolerance of ±2KHz, thus no further adjustments neither external components are required. A burst coding of the 22KHz tone can be accomplished thanks to the fast response of the ENT input and the prompt oscillator start-up. This helps designers who want to implement the DiSEqC protocols (*). In order to improve design flexibility and to allow implementation of newcoming LNB remote control standards, an analogic modulation input pin is available (EXTM). An appropriate DC blocking capacitor must be used to couple the modulating signal source to the EXTM pin. When external modulation is not used, the relevant pin can be left open. Two pins are dedicated to the overcurrent protection/monitoring: CEXT and OLF. The overcurrent protection circuit works dynamically: as soon as an overload is detected in either LNB output, the output is shut-down for a time Toff determined by the capacitor connected between CEXT and GND. Simultaneously the OLF pin, that is an open collector diagnostic output flag, from HIGH IMPEDANCE state goes LOW. After the time has elapsed, the output is resumed for a time ton=1/15toff (typ.) and OLF goes in HIGH IMPEDANCE. If the overload is still present, the protection circuit will cycle again through t off and ton until the overload is removed. Typical ton+toff value is 1200ms when a 4.7µF external capacitor is used. This dynamic operation can greatly reduce the power dissipation in short circuit condition, still ensuring excellent power-on start up even with highly capacitive loads on LNB outputs. The device is packaged in Multiwatt15 for thru-holes mounting and in PowerSO-20 for surface mounting. When a limited functionality in a smaller package matches design needs, a range of cost-effective PowerSO-10 solutions is also offered. All versions have built-in thermal protection against overheatingdamage. (*): External components are needed to comply to level 2.x and above (bidirectional) DiSEqC bus hardware requirements. DiSEqC is a trademark of EUTELSAT. ORDERING NUMBERS Type LNBK10 LNBK11 LNBK12 LNBK13 LNBK14 LNBK15 LNBK16 LNBK20 Multiwatt-15 PowerSO-20 PowerSO-10 LNBK10SP (*) LNBK11SP (*) LNBK12SP (*) LNBK13SP (*) LNBK14SP (*) LNBK15SP (*) LNBK16SP (*) LNBK20CR (*) LNBK20PD (*) Available on request PIN CONFIGURATIONS Multiwatt-15 2/18 PowerSO-20 PowerSO-10 LNBK10 SERIES - LNBK20 TABLE A: PIN CONFIGURATIONS SYMBOL NAME FUNCTION PIN NUMBER vs SALES TYPE (LNBK) 20CR 20PD 10SP 11SP 12SP 13SP 14SP 15SP 16SP V CC1 Supply Input 1 15V to 27V supply. It is automatically selected when VOUT = 13 or 14V 1 2 1 1 1 1 1 1 1 V CC2 Supply Input 2 22V to 27V supply. It is automatically selected when VOUT = 18 or 19V 2 3 2 2 2 2 2 2 2 LNBA Output Port See truth tables for voltage and port selection. In stand-by mode this port is powered by the MI pin via the internal Bypass Switch 3 4 3 3 3 3 3 3 3 VSEL Output Voltage Selection: 13 or 18V (typ) Logic control input: See truth table 4 5 4 4 4 4 4 4 4 EN Port Enable Logic control input: See truth table 5 6 5 5 5 5 5 5 5 OSEL Port Selection Logic control input: See truth table 7 7 9 NA NA NA NA NA NA GND G round Circuit Ground. It is internally connected to the die frame 8 1 10 11 20 6 6 6 6 6 6 6 ENT 22 KHz Tone Enable Logic control input: See truth table 9 13 7 7 7 7 7 7 7 CEXT External Capacitor Timing capacitor used by the Dynamic Overload Protection. Typical application is 4.7 µF for a 1200 ms cycle 10 14 8 8 8 8 8 8 8 EXTM External Modulation External Modulation Input. Needs DC decoupling to the AC source. If not used, can be left open. 11 15 NA NA NA 9 NA 9 9 12 16 NA NA 9 NA 9 NA 10 LLC Line Length Logic control input: See Compens (+1V typ) truth table OLF Over Load F lag Logic output (open Collector). Normally in HIGH IMPEDANCE, goes LOW when current or thermal overload occurs. 13 17 NA 9 NA NA 10 10 NA MI Master Input In stand-by mode, the voltage on MI is routed to LNBA pin. Can be left open if bypass function is not needed 14 18 NA 10 10 10 NA NA NA LNBB Output Port See truth tables for voltage and port selection. 15 19 10 NA NA NA NA NA NA NOTE: The limited pin availability of the PowerSO-10 package leads to drop some functions. 3/18 LNBK10 SERIES - LNBK20 ABSOLUTE MAXIMUM RATING Symbol Parameter Vi DC Input Voltage (VCC1, VCC2, MI) Io Output Current (LNBA, LNBB) Vi Logic Input Voltage (ENT, EN, OSEL, VSEL, LLC) Value Unit 28 V Internally limited I SW Bypass Switch Current Pt ot Power Dissipation at Tcase < 85 C o -0.5 to 7 V 900 mA 14 W T stg Storage Temperature Range - 40 to 150 o To p Operating Junction Temperature Range - 40 to 125 o C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied THERMAL DATA Symbol Parameter Value R t hj- case Thermal Resistance Junction-case Unit o 2 LOGIC CONTROLS TRUTH TABLES Control I/O Pin Name L OUT O LF I OUT > I OMAX or Tj > 150 C I OUT < I OMAX IN ENT 22KHz tone O FF 22KHz tone ON IN EN See table below See table below IN OSEL See table below See table below IN VSEL See table below See table below IN LLC See table below See table below VLNBB EN OSEL VSEL LLCP VLNBA L X X X V MI -0.4V (typ.) Disabled H L L L 13V (typ.) Disabled H L H L 18V (typ.) Disabled H L L H 14V (typ.) Disabled H L H H 19V (typ.) Disabled H H L L Disabled 13V (typ.) H H H L Disabled 18V (typ.) H H L H Disabled 14V (typ.) H H H H Disabled 19V (typ.) NOTE: All logic input pins have internal pull-down resistor (typ. = 250KΩ) 4/18 H O C/W LNBK10 SERIES - LNBK20 BLOCK DIAGRAM 5/18 LNBK10 SERIES - LNBK20 ELECTRICAL CHARACTERISTICS FOR LNBK SERIES (Tj = 0 to 85 oC, Ci = 0.22 µF, Co = 0.1 µF, EN=H, ENT=L, LLC= L, VIN1 = 16V, VIN2 = 23V, IOUT = 50mA, (unless otherwise specified) Symbol Test Conditions Min. Max. Unit V IN1 VCC1 Supply Voltage Parameter IO = 400mA, ENT=H, VSEL=L, LLC=L IO = 400mA, ENT=H, VSEL=L, LLC=H 15 16 27 27 V V V IN2 VCC2 Supply Voltage IO = 400mA, ENT=VSEL=H, LLC=L IO = 400mA, ENT=VSEL=H, LLC=H 22 23 27 27 V V V O1 Output Voltage IO = 400 mA, VSEL=H, LLC=L IO = 400 mA, VSEL=H, LLC=H 17.3 18 19 18.7 V V V O2 Output Voltage IO = 400 mA, VSEL=L, LLC=L IO = 400 mA, VSEL=L, LLC=H 12.5 13 14 13.5 V V ∆V O Line Regulation VIN1 = 15 to 19 V, VOUT = 13 V VIN2 = 22 to 26 V, VOUT = 18 V 5 5 50 50 mV mV ∆V O Load Regulation VIN1 = VIN2 = 22 V, VOUT = 13 or 18V, IO = 50 to 400 mA 65 150 mV SVR Supply Voltage Rejection VIN1 = VIN2 = 23 ± 0.5Vac, fac = 50 KHz 45 I MAX Output Current Limiting t OFF Dynamic Overload Protection OFF Time tON 400 Typ. 500 dB 600 mA Output shorted, CEXT = 4.7µF 1100 ms Dynamic Overload Protection ON Time Output shorted, CEXT = 4.7µF t OFF /15 ms F TONE Tone Frequency ENT=H 20 22 24 KHz A TONE Tone Amplitude ENT=H 0.4 0.6 0.8 Vpp D T ONE Tone Duty Cucle ENT=H 40 50 60 % Tone Rise or Fall Time ENT=H 5 10 15 µs G EXT M External Modulation Gain ∆VOUT/∆VEXTM, f = 10Hz to 40KHz V EXTM External Modulation Input Voltage External Modulation Impedance AC Coupling 400 mV pp f = 10Hz to 40KHz 400 Bypass Switch Voltage Drop (MI to LNBA) Overload Flag Pin Logic Low EN=L, ISW= 300mA, VCC2-VMI = 4V 0.35 0.6 IOL = 8mA 0.28 0.5 V VOH = 6V 10 µA 0.8 V tr, tf Z EXT M V SW V OL V IL Overload Flag Pin OFF State Leakage Current Control Input Pin Logic Low VI H Control Input Pin Logic High I OZ 5 Ω 2.5 V V µA I IH Control Pins Input Current VIH = 5V 20 I CC Supply Current Outputs Disabled (EN=L) 0.3 I CC Supply Current ENT=H, IOUT = 400 mA 3.1 6 mA I OBK Output Backward Current EN=L, VLNBA = VLNBB = 18V VIN1 = VIN2 = 22V or floating 0.2 3 mA T SHDN 6/18 Thermal Shutdown Threshold 150 1 mA o C LNBK10 SERIES - LNBK20 TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T j=25oC) Output Voltage vs Output Current Tone Frequency vs Temperature Tone Duty Cycle vs Temperature Tone Rise Time vs Temperature Tone Fall Time vs Temperature Tone Amplitude vs Temperature 7/18 LNBK10 SERIES - LNBK20 TYPICAL PERFORMANCE CHARACTERISTICS (continued) S.V.R. vs Frequency LNBA External Modulation Gain vs Frequency External Modulation vs Temperature Bypass Switch Drop vs Output Current Bypass Switch Drop vs Output Current Overload Flag pin Logic Low vs Flag Current 8/18 LNBK10 SERIES - LNBK20 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Supply Current vs Temperature Supply Current vs Temperature Dynamic Overload protection (ISC vs Time) Tone Enable Tone Disable 22 KHz Tone 9/18 LNBK10 SERIES - LNBK20 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Enable Time Disable Time 18V to 13V Change 13V to 18V Change 10/18 LNBK10 SERIES - LNBK20 TYPICAL APPLICATION SCHEMATICS TWO ANTENNA PORTS RECEIVER MCU+V 17V 24V 10uF C2 AUX DATA ANT CONNECTORS 11 EXTM R1 47K 13 4 9 5 7 12 OLF VSEL ENT EN OSEL LLC 1 2 VCC1 VCC2 JA 3 15 14 LNBA LNBB MI JB TUNER 10 CEXT 4.7µF C1 + C3 C5 C6 8 GND 2x 0.1µF LNBK20CR Vcc C4 2x 47nF I/Os I/Os MCU SINGLE ANTENNA RECEIVER WITH MASTER RECEIVER PORT 17V MCU+V 24V 10uF C2 AUX DATA 11 EXTM R1 13 47K 4 9 5 7 12 OLF VSEL ENT EN OSEL LLC VCC1 VCC2 LNBA LNBB MI CEXT 1 2 ANT 3 15 14 4.7µF C1 + GND TUNER C3 C4 C5 47nF 8 2x 0.1µF LNBK20CR Vcc MASTER 10 I/Os I/Os MCU 11/18 LNBK10 SERIES - LNBK20 TYPICAL APPLICATION SCHEMATICS (continued) USING SERIAL BUS TO SAVE MPU I/Os 17V 24V MCU+V C2 R1 11 AUX DATA EXTM 47K VCC1 VCC2 10uF 1 2 3 15 STR D CLK OE Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 4 5 6 7 14 13 12 11 QS QS 9 10 13 OLF 4 9 5 7 12 VSEL EN T EN OSEL LLC 1 2 JA LNBA LNBB MI 3 15 14 CEXT 10 JB TUNER 4.7µF C1 + GND C3 C4 C5 C6 8 2x 0.1µF LNBK20CR 2x 47nF 4094 SERIAL BUS MCU+V I/Os Vcc MCU TWO ANTENNA PORTS RECEIVER: LOW COST SOLUTION 17V 24V ANT CONNECTORS VCC1 VCC2 LNBA LNBB 1 2 JA 3 10 JB 4 7 5 9 VSEL CEXT 8 ENT TUNER 4.7µF EN OSEL GND C1 + C3 C4 C5 C6 6 2x 0.1µF LNBK10SP 2x 47nF MCU+V Vcc I/Os I/Os MCU 12/18 LNBK10 SERIES - LNBK20 TYPICAL APPLICATION SCHEMATICS (continued) CONNECTING TOGETHER VCC1 AND VCC2 24V ANT CONNECTORS VCC1 VCC2 LNBA LNBB 1 2 JA 3 10 JB 4 7 5 9 CEXT VSEL ENT EN OSEL 8 TUNER C1 + 4.7µF GND C4 C5 C6 6 0.1µF LNBK10SP 2x 47nF MCU+V Vcc I/Os I/Os MCU SINGLE ANTENNA RECEIVER WITH MASTER RECEIVER PORT: LOW COST SOLUTION 17V 24V C2 9 AUX DATA EXTM 10µF VCC1 VCC2 1 2 ANT 3 LNBA MI 4 7 5 VSEL ENT CEXT 10 MASTER TUNER 8 4.7µF C1 + EN C3 6 C4 C5 47nF GND 2x 0.1µF LNBK13SP MCU+V Vcc I/Os I/Os MCU 13/18 LNBK10 SERIES - LNBK20 TYPICAL APPLICATION SCHEMATICS (continued) SINGLE ANTENNA RECEIVER WITH OVERLOAD DIAGNOSTIC 17V 24V MCU+V C2 9 AUX DATA R1 EXTM 10µF 10 47K VCC1 VCC2 LNBA 1 2 3 ANT OLF 4 VSEL 7 ENT 5 EN CEXT 8 TUNER 4.7µF GND C4 C5 47nF 2x 0.1µF I/Os I/Os MCU 14/18 C3 6 LNBK15SP Vcc C1 + LNBK10 SERIES - LNBK20 MULTIWATT-15 MECHANICAL DATA DIM. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 MIN. mm TYP. MAX. 5 2.65 1.6 MIN. 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 0.772 1 0.49 0.66 1.02 17.53 19.6 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.63 1.9 1.9 3.65 1.27 17.78 22.2 22.1 17.5 10.7 4.55 5.08 inch TYP. MAX. 0.197 0.104 0.063 0.039 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.53 2.6 2.6 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144 0.050 0.700 0.874 0.870 0.689 0.421 0.179 0.200 0.022 0.030 0.060 0.710 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 0.102 0.152 0016036 15/18 LNBK10 SERIES - LNBK20 PowerSO-20 MECHANICAL DATA DIM. mm TYP. MIN. A a1 a2 a3 b c D (1) E e e3 E1 (1) E2 G h L N S T MAX. 3.60 0.30 3.30 0.10 0.53 0.32 16.00 14.50 0.10 0 0.40 0.23 15.80 13.90 inch TYP. MIN. MAX. 0.1417 0.0118 0.1299 0.0039 0.0209 0.0126 0.6299 0.570 0.0039 0 0.0157 0.009 0.6220 0.5472 1.27 11.43 0.050 0.450 10.90 11.10 2.90 0.10 1.10 1.10 0 0.80 0.4291 0.437 0.1141 0.0039 0.0433 0.0433 0 0.0314 10o (max.) 8o (max.) 10.0 0.3937 (1) ”D and E1” do not include mold flash or protusions - Mold flash or protusions shall not exceed 0.15mm (0.006”) N R N a2 b DETAILA A e c a1 DETAILB E e3 D DETAILA lead 20 11 slug a3 DETAILB E2 E1 0.35 Gage Plane T -C- S L SEATING PLANE G C (COPLANARITY) 1 10 PSO20MEC h x 45° 0056635 16/18 LNBK10 SERIES - LNBK20 PowerSO-10 MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. MIN. TYP. MAX. A 3.35 3.65 0.132 0.144 A1 0.00 0.10 0.000 0.004 B 0.40 0.60 0.016 0.024 c 0.35 0.55 0.013 0.022 D 9.40 9.60 0.370 0.378 D1 7.40 7.60 0.291 0.300 E 9.30 9.50 0.366 0.374 E1 7.20 7.40 0.283 0.291 E2 7.20 7.60 0.283 0.300 E3 6.10 6.35 0.240 0.250 E4 5.90 6.10 0.232 e 1.27 0.240 0.050 F 1.25 1.35 0.049 0.053 H 13.80 14.40 0.543 0.567 1.80 0.047 h 0.50 L 0.002 1.20 q 1.70 0.067 o α 0.071 8o 0 B 0.10 A B 10 5 e 0.25 B = = = E4 = = = 1 E1 = E3 = E2 = E = = = H 6 SEATING PLANE DETAIL ”A” A C M Q h D = D1 = = = SEATING PLANE A F A1 A1 L DETAIL ”A” α 0068039-C 17/18 LNBK10 SERIES - LNBK20 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a trademark of STMicroelectronics 1998 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. . 18/18