參數(shù)資料
型號： LNBP9V7V
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 0.8 A SWITCHING REGULATOR, PZFM7
封裝： HEPTAWATT-7
文件頁數(shù)： 1/8頁
文件大?。?/td> 128K
代理商： LNBP9V7V
1/8
November 2004
s
SIMPLEST INTEGRATED SOLUTION FOR
THE LNB REMOTE SUPPLY AND CONTROL
s
500mA GUARANTEED OUTPUT CURRENT
s
DUAL INPUT SUPPLY FOR REDUCING
POWER DISSIPATION
s
22KHZ BUILT-IN TONE OSCILLATOR
(LNBP9 VERSION)
s
FAST OSCILLATOR START-UP FOR
DiSEqCTM ENCODING (LNBP9 VERSION)
s
AUXILIARY MODULATION INPUT FOR
MORE FLEXIBILITY (LNBP8 VERSION)
s
STAND-BY FUNCTION
s
SHORT CIRCUIT AND
OVERTEMPERATURE PROTECTION
s
AVAILABLE IN THRU-HOLE PACKAGE
DESCRIPTION
Intended for analog and digital satellite receivers,
the LNBP is a monolithic linear voltage regulator,
assembled in HeptawattTM, specifically designed
to
provide
the
powering
voltages
and
the
interfacing signals to the LNB down-converter.
The regulator output can be logic controlled to be
13V or 18V (typ.) by mean of the VSEL pin for the
remote controlling of the LNB. In order to reduce
the power dissipation of the device when the
lowest output voltage is selected, the regulator
has 2 supply inputs (VCC1 and VCC2). They must
be powered respectively at 15V (min.) and 22V
(min.), and an internal switch will automatically
select the appropriate supply voltage according to
the selected output voltage.
The TONE pin (only for the LNBP9 version)
activates the internal oscillator so that the DC
output is modulated by a 22KHz square wave.
This internal oscillator is factory trimmed within a
tolerance of +/- 2KHz, thus no further adjustment
or external components are required.
A burst coding of the 22KHz tone can be
accomplished thanks to the fast response of the
TONE input and the prompt oscillator start-up.
This helps designers which want to implement the
DiSEqCTM protocols.
In order to improve design flexibility and to allow
implementation of other LNB remote control
standards, an analogic modulation input pin
(EXTM) is available (LNBP8 version only). An
appropriate DC blocking capacitor must be used
to couple the modulating signal source to the
EXTM pin.
Both versions integrate thermal and short circuit
protection.
The device is packaged in Heptawatt for an easy
thru-hole mounting. If an 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.
When the IC is powered and put in Stand-by (EN
pin LOW), the regulator output is disabled and the
IC power consumption is reduced to 300A typ.
Table 1: Order Codes
TYPE
HEPTAWATT
LNBP8
LNBP8V7V
LNBP9
LNBP9V7V
LNBP8
LNBP9
LNB SUPPLY AND CONTROL VOLTAGE REGULATOR
Heptawatt
Rev. 1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LNBS21 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
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(fēng)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
LNBTVS3-220 功能描述:TVS 二極管 - 瞬態(tài)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
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