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參數資料
| 型號： | LNBS21 |
| 廠商： | 意法半導體 |
| 英文描述： | LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE |
| 中文描述： | LNB電源與控制集成電路升壓轉換器和I2C接口 |
| 文件頁數： | 1/19頁 |
| 文件大?。?/td> | 637K |
| 代理商： | LNBS21 |
1/19
November 2002
I
COMPLETE INTERFACE BETWEEN LNB
AND I2CTM 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
DiSEqCTM ENCODING
BUILT-IN 22KHz TONE DETECTOR
SUPPORTS BI-DIRECTIONAL DiSEqCTM
LOOP-THROUGH FUNCTION FOR SLAVE
OPERATION
LNB SHORT CIRCUIT PROTECTION AND
DIAGNOSTIC
CABLE LENGTH DIGITAL COMPENSATION
INTERNAL OVER TEMPERATURE
PROTECTION
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DESCRIPTION
Intended for analog and digital satellite STB
receivers/SatTV, sets/PC cards, the LNBS21 is a
monolithic voltage regulator and interface IC,
assembled in PowerSO-20, specifically designed
to provide the power and the 13/18V, 22KHz tone
signalling to the LNB downconverter in the
antenna or to the multiswitch box. In this
application field, it offers a complete solution with
extremely low component count, low power
dissipation together with simple design and I
2
C
TM
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 linear
LNBS21
LNB SUPPLY AND CONTROL IC WITH
STEP-UP CONVERTER AND I
2
C INTERFACE
Enable
I Select
Preregul.+
U.V.lockout
+P.ON res.
Feedback
Step-up
Controller
V Select
Linear Post-reg
+Modulator
+Protections
22KHz
Oscill.
Vup
LT1
OUT
SDA
SCL
DSQIN
Vcc
Diagnostics
I2C
interf.
Tone
Detector
DSQOUT
LT2
DETIN
LNBS21
Byp
Gate
Sense
EXTM
ADDR
SCHEMATIC DIAGRAM
PowerSO-20
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| LP1072 | 802.11a/b/g Baseband System Solution |
| LPR30 | LOW DROP VOLTAGE REGULATOR DRIVE FOR EXTERNAL N-CHANNEL POWER MOSFET |
| LPR30D | LOW DROP VOLTAGE REGULATOR DRIVE FOR EXTERNAL N-CHANNEL POWER MOSFET |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LNBS21_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE |
| LNBS21PD | 功能描述:其他電源管理 LNBP Supply/Control RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel |
| LNBS21PD-TR | 功能描述:其他電源管理 LNB Supply/Cont IC RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel |
| LNBTVS3-220 | 功能描述:TVS 二極管 - 瞬態電壓抑制器 3kV 1500W Ppp Lightning Protection RoHS:否 制造商:Vishay Semiconductors 極性:Bidirectional 工作電壓: 擊穿電壓:58.9 V 鉗位電壓:77.4 V 峰值浪涌電流:38.8 A 系列: 封裝 / 箱體:DO-214AB 最小工作溫度:- 55 C 最大工作溫度:+ 150 C |
| LNBTVS3-220S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Lightning protection for LNB power supply |
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