LNBP21PD STMicroelectronics, LNBP21PD Datasheet
LNBP21PD
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STEP-UP CONVERTER AND I COMPLETE INTERFACE BETWEEN LNB 2 TM AND I C BUS BUILT-IN DC/DC CONTROLLER FOR SINGLE 12V SUPPLY OPERATION ACCURATE BUILT-IN 22KHz TONE OSCILLATOR SUITS WIDELY ACCEPTED STANDARDS FAST OSCILLATOR START-UP FACILITATES TM DiSEqC ENCODING BUILT-IN 22KHz ...
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LNBP21 power dissipation together with simple design and standard interfacing. This IC has a built in DC/DC step-up controller that, from a single supply source ranging from 8 to 15V, generates the voltages that let the ...
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... Table 3: Thermal Data Symbol R Thermal Resistance Junction-case thj-case Figure 2: Pin Configuration (top view) SO-20 SO-20 (Tape & Reel) LNBP21D2-TR Parameter Parameter LNBP21 PowerSO-20 PowerSO-20 (Tube) (Tape & Reel) LNBP21PD LNBP21PD-TR Value Internally Limited -0 -0 900 ±20 ±400 -0 -0 -40 to +150 -40 to +125 SO-20 ...
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LNBP21 Table 4: Pin Description SYMBOL NAME V Supply Input CC GATE External Switch Gate SENSE Current Sense Input V Step-up Voltage up OUT Output Port SDA Serial Data SCL Serial Clock DSQIN DiSEqC Input DETIN Detector In DSQOUT DiSEqC ...
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Figure 3: Typical Application Circuit C2 C2 220µF 220µF IC2 IC2 STS4DNFS30L STS4DNFS30L STS4DNFS30L STS4DNFS30L (Note 3) (Note 3) L1=22µH L1=22µ (Note 4) (Note 4) 0.1 0.1 0.1 0 ...
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LNBP21 Figure 4: Data Validity On The I Figure 5: Timing Diagram On I Figure 6: Acknowledge BUS 2 C Bus 2 C Bus ...
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LNBP1 SOFTWARE DESCRIPTION INTERFACE PROTOCOL The interface protocol comprises start condition (S) CHIP ADDRESS MSB ACK= Acknowledge S= Start P= Stop R/W= Read/Write SYSTEM REGISTER (SR, 1 BYTE) MSB ...
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LNBP21 PCL ISEL TEN LLC VSEL These bits are read exactly the same as they were left after last write operation Values are typical unless otherwise specified 2 POWER- INTERFACE RESET 2 The I C interface built in ...
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Table 5: Electrical Characteristics For LNBP Series (T PCL=0, DSQIN=0, V =12V for I C access to the system register) Symbol Parameter V Supply Voltage IN V LT1 Input Voltage LT1 I Supply Current IN V Output ...
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LNBP21 Symbol Parameter I Output Backward Current OBK T Temperature Shutdown SHDN Threshold T Temperature Shutdown SHDN Hysteresis Table 6: Gate And Sense Electrical Characteristics (T Symbol Parameter R Gate LOW R DSON-L DSON R Gate LOW R DSON-H DSON ...
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Figure 7: Test Circuit STPS2L30A 220µF STN4NF03L L1=22µ Vin A 220µF { SDA From Master SCL Pulse Gen. TYPICAL CHARACTERISTICS (unless otherwise specified T Figure 8: Output Voltage vs Temperature 1N4001 Vup 470nF Gate Sense ...
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LNBP21 Figure 10: Line Regulation vs Temperature Figure 11: Line Regulation vs Temperature Figure 12: Load Regulation vs Temperature 12/24 Figure 13: Load Regulation vs Temperature Figure 14: Supply Current vs Temperature Figure 15: Supply Current vs Temperature ...
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Figure 16: Dynamic Overload Protection ON Time vs Temperature Figure 17: Dynamic Overload Protection OFF Time vs Temperature Figure 18: Output Current Limiting vs Temperature Figure 19: Output Current Limiting vs Temperature Figure 20: Tone Frequency vs Temperature Figure 21: ...
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LNBP21 Figure 22: Tone Duty Cycle vs Temperature Figure 23: Tone Rise Time vs Temperature Figure 24: Tone Fall Time vs Temperature 14/24 Figure 25: Loopthrought Switch Drop Voltage vs Temperature Figure 26: Loopthrought Switch Drop Voltage vs Temperature Figure ...
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Figure 28: Loopthrought Switch Drop Voltage vs Loopthrought Current Figure 29: DSQOUT Pin Logic Low vs Temperature Figure 30: Undervoltage Lockout Threshold vs Temperature Figure 31: Output Backward Current vs Temperature Figure 32: DC/DC Converter Efficiency vs Temperature Figure 33: ...
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LNBP21 Figure 34: 22kHz Tone V =12V, I =50mA, EN=TEN Figure 35: DSQIN Tone Enable Transient Response V =12V, I =50mA, EN=1, TEN Figure 36: DSQIN Tone Enable Transient Response V =12V, I =50mA, EN=1, TEN=0 ...
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THERMAL DESIGN NOTES During normal operation, this device dissipates some power. At maximum rated output current (500mA), the voltage drop on the linear regulator lead to a total dissipated power that is of about 1.7W. The heat generated requires a ...
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LNBP21 Figure 41: PowerSO-20 Suggested PCB Heatsink Layout 18/24 ...
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SO-20 MECHANICAL DATA DIM. MIN. A 2.35 A1 0.1 B 0.33 C 0.23 D 12. 10.00 h 0.25 L 0.4 k 0° ddd mm. TYP MAX. 2.65 0.093 0.30 0.004 0.51 0.013 0.32 0.009 13.00 0.496 ...
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LNBP21 DIM. MIN 0. 0.40 c 0.23 D (1) 15.80 E 13. (1) 10. 0. 0˚ T (1) “D and E1” do not include ...
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Tape & Reel SO-20 MECHANICAL DATA DIM. MIN 12 10.8 Bo 13.2 Ko 3.1 Po 3.9 P 11.9 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 30.4 11 0.425 13.4 0.520 3.3 ...
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LNBP21 Tape & Reel PowerSO-20 MECHANICAL DATA DIM. MIN 12 15.1 Bo 16.5 Ko 3.8 Po 3.9 P 23.9 W 23.7 22/24 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 30.4 15.3 ...
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Table 9: Revision History Date Revision 07-Jul-2004 2 05-Oct-2004 3 Description of Changes Typing error on text. Mistake Pin 6 Power SO-20 - Table 4. LNBP21 23/24 ...
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... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications 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 ...