LNBH23 STMicroelectronics, LNBH23 Datasheet
LNBH23
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LNBH23 Summary of contents
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... November 2010 PowerSSO-24 (Exposed pad) 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 ( 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 ...
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... Thermal protection and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 I²C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.1 Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.2 Start and stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.3 Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6.5 Transmission without acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 LNBH23 software description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.1 Interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.2 System register (SR, 1 byte 2/32 Doc ID 13356 Rev 7 LNBH23 ...
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... LNBH23 7.3 Transmitted data (I²C bus write mode 7.4 Diagnostic received data (I²C read mode 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 Doc ID 13356 Rev 7 Contents 3/32 ...
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... Linear Post-reg +Modulator +Modulator +Protections +Protections I²C Diagnostics I²C Diagnostics +Diagnostics +Diagnostics 22KHz 22KHz 22KHz Oscill. Oscill. Oscill. LNBH23 LNBH23 A-GND A-GND Doc ID 13356 Rev 7 LNBH23 Vcc Vcc Vcc Byp Byp Byp Vcc- Vcc- Vcc Preregulator Preregulator +U.V.lockout +U.V.lockout +P.ON reset +P.ON reset EN ...
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... R-L filter. 2.3 DiSEqC™ 1.X implementation When the LNBH23 is used in DiSEqC™ 1.x applications the R-L filter is always needed for the proper operation of the new 22 kHz tone generator (patent pending. See application circuit). Also in this case, the TTX function must be preventively enabled before to start the 22 kHz data transmission and disabled as soon as the data transmission has been expired. The tone can be activated both with the DSQIN pin or the TEN I² ...
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... The LNBH23 is also compliant to the USA LNB power supply standards. In order to allow fast transition of the output voltage from and vice versa, the LNBH23 is provided with the VCTRL TTL pin which keeps the output when it is set LOW and when it is set HIGH or floating ...
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... LNBH23 is provided with the AUX I²C bit which can be set HIGH, in write mode by the MCU, before to read the IMON I²C bit status, to force the LNBH23 output voltage as the highest voltage on the bus (22 V typ.) during the minimum current diagnostic phase. When the AUX bit is set to HIGH, the set to 22 ...
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... Thermal protection and diagnostic The LNBH23 is also protected against overheating: when the junction temperature exceeds 150 °C (typ.), the step-up converter and the liner regulator are shut-off, and the diagnostic OTF SR bit is set to "1". Normal operation is resumed and the OTF bit is reset to LOW when the junction is cooled down to 135 ° ...
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... Bi-directional data from/to I²C bus. Serial clock Clock from I²C bus. This pin will accept the DiSEqC code from the main microcontroller. The LNBH23 will use this code to modulate DiSEqC input the internally generated 22 kHz carrier. Set to ground if not used. This pin can be used, as well as the TTX I²C bit of the system ...
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... Exposed pad through vias to dissipate the heat. Analog ground Analog circuits ground. Not connected Not internally connected pins. Doc ID 13356 Rev 7 Function pin. Set to ground if not used. oTX Table 10 switch control used oRX =1. If VCTRL=1 or floating V =18.5V (or oRX =13.4V (LLC=either 0 oRX LNBH23 ...
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... LNBH23 4 Maximum ratings Table 3. Absolute maximum ratings Symbol power supply input voltage pins CC input voltage UP I Output current output pin voltage oRX V Tone output pin voltage oTX Logic input voltage (TTX, SDA, SCL, DSQIN, EXTM, VCTRL ADDR) ...
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... D2 D2 C10 C10 R4 BAT43 BAT43 220nF 220nF 15 Ohm Ceramic Ceramic C12 R3 10nF 10kOhm Byp EXTM C11 220nF ADDR Ceramic 13/18 ISEL R2 (RSEL) 11kOhm Notes >25V and I higher than: RRM F(AV) > 0.2A, V > F(AV) RRM is the boost converter peak current (see LNBH23 to LNB < 0 ...
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... LNBH23 Table 5. Bill of material (continued) Component FERRITE BEAD, Panasonic-EXCELS A35 or Murata-BL01RN1-A62 or Taiyo-Yuden- L2 BKP1608HS600 or equivalent with similar or higher impedance and current rating higher than 2A L3 220µH-270µH Inductor with current rating higher than rated output current To calculate the boost converter peak current (I ...
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... I²C bus interface 6 I²C bus interface Data transmission from main MCU to the LNBH23 and vice versa takes place through the 2 wires I²C bus Interface, consisting of the 2 lines SDA and SCL (pull-up resistors to positive supply voltage must be externally connected). 6.1 Data validity ...
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... LNBH23 Figure 5. Data validity on the I²C bus Figure 6. Timing diagram of I²C bus Figure 7. Acknowledge on the I²C bus Doc ID 13356 Rev 7 I²C bus interface 15/32 ...
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... When the R/W bit in the chip address is set to 0, the main MCU can write on the system register (SR) of the LNBH23 via I²C bus. All and 8 bits are available and can be written by the MCU to control the device functions as per the below truth table. ...
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... I²C bus in read mode. The read mode is master activated by sending the chip address with R/W bit set the following master generated clocks bits, LNBH23 issues a byte on the SDA data bus line (MSB transmitted first). At the ninth clock bit the master can: ● ...
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... VMON information must be disregarded if LLC=1 (valid only if LLC=0) 7.5 Power-on I²C interface reset I²C interface built in LNBH23 is automatically reset at power-on. As long as the V below the under voltage lockout (UVL) threshold (6.7 V), the interface does not respond to any I²C command and the system register (SR) is initialized to all zeroes, thus keeping the power blocks disabled ...
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... LNBH23 8 Electrical characteristics Refer to the typical application circuit, T VSEL=LLC=TEN=PCL=ITEST=TTX=AUX= mA, unless otherwise stated. Typical values are referred to T voltage. See software description section for I²C access to the system register. Table 8. Electrical characteristics Symbol Parameter V Supply voltage I I Supply current I V Output voltage ...
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... R/W bit determines the transmission mode: read (R/W=1) write (R/W=0) Doc ID 13356 Rev 7 Min. Typ. Max. 0.3 1.5 150 =2mA 0.3 0.5 = -15 150 15 Min. Typ. Max. 0.8 2 -10 10 0.6 400 Min. Typ. Max LNBH23 Unit V PP kΩ V µ µA mA °C °C Unit V V µA V kHz Unit ...
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... LNBH23 Refer to the typical application circuit, T VSEL=LLC=TEN=PCL=ITEST=TTX=AUX=0, R mA, unless otherwise stated. Typical values are referred to T See software description section for I²C access to the system register. Table 11. Output voltage diagnostic (VMON bit) characteristics Symbol Parameter Diagnostic low threshold at V TH-L V =13.4V O Diagnostic low threshold at ...
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... EN=VSEL=LLC=1 EN=VSEL=LLC [°C] T [°C] Supply current vs. temperature =12V, I =12V, I =No Load =No Load [°C] T [°C] LNBH23 =V pin O oRX ...
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... LNBH23 Figure 14. Supply current vs. temperature =12V =12V =No Load =No Load EN=TEN=TTX=LLC=VSEL=1 EN=TEN=TTX=LLC=VSEL -10 - [°C] T [°C] Figure 16. Dynamic overload protection OFF time vs. temperature 1200 1200 ...
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... [°C] T [°C] temperature =12V, V =12V, V =21V externally forced =21V externally forced OBK OBK EN=0 EN [°C] T [°C] LNBH23 ...
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... LNBH23 Figure 26. DC-DC Converter efficiency vs. temperature 100 100 EN=VSEL=LLC=1 EN=VSEL=LLC -10 - [°C] T [°C] Figure 28. DSQIN tone enable transient response DSQIN LNB OUT V =12V CC EN=TTX=1, TEN=0 Figure 27. 22 kHz tone waveform V V =12V, I ...
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... Package mechanical data 10 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. 26/32 Doc ID 13356 Rev 7 LNBH23 ® ...
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... LNBH23 Table 14. QFN32 ( mm.) mechanical data Dim ddd Figure 30. QFN32 package dimensions (mm.) Min. Typ. 0.80 0.90 0 0.02 0.20 0.18 0.25 4.85 5.00 3.20 4.85 5.00 3.20 0.50 0.30 0.40 Doc ID 13356 Rev 7 Package mechanical data Max. 1.00 0.05 0.30 5.15 3.70 5.15 3.70 0.50 0.08 7376875/E 27/32 ...
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... PowerSSO-24 mechanical data mm. Typ. Max. 2.47 2.40 0.075 0.51 0.32 10.50 7.6 0.8 8.8 0.10 0.06 10.50 0.40 0.85 10° (max) 4.70 5.50 Doc ID 13356 Rev 7 inch. Min. Typ. 0.085 0.085 0 0.013 0.009 0.398 0.291 0.031 0.346 0.398 0.022 0.161 0.193 7412818_A LNBH23 Max. 0.097 0.094 0.003 0.020 0.013 0.413 0.299 0.004 0.002 0.413 0.016 0.033 0.185 0.217 ...
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... LNBH23 Tape & reel PowerSSO-24 mechanical data Dim. Min 12 10.8 Bo 10.7 Ko 2.65 Po 3 23.7 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 30.4 11.0 0.425 10.9 0.421 2.85 0.104 4.1 0.154 12.1 0.469 24.3 0.933 Doc ID 13356 Rev 7 Package mechanical data inch. Typ. Max. 12.992 0.519 1.197 ...
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... Package mechanical data Tape & reel QFNxx/DFNxx (5x5 mm.) mechanical data Dim. Min 12 30/32 mm. Typ. Max. Min. 330 13.2 0.504 0.795 101 3.898 14.4 5.25 5.25 1 Doc ID 13356 Rev 7 LNBH23 inch. Typ. Max. 12.992 0.519 3.976 0.567 0.207 0.207 0.043 0.157 0.315 ...
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... LNBH23 11 Revision history Table 15. Document revision history Date Revision 02-Apr-2007 1 15-Nov-2007 2 11-Jan-2008 3 26-Mar-2008 4 08-Jan-2009 5 23-Mar-2009 6 29-Nov-2010 7 Initial release. Added Note 2 on Table 3. Added: new package QFN32 and Modified: mechanical data for QFN32 page 27. Modified: ESD parameter Table 3 on page Modified: Y dimension mechanical data for PowerSSO-24 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 32/32 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 13356 Rev 7 LNBH23 ...