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參數(shù)資料
| 型號： | LNBS21 |
| 廠商： | 意法半導(dǎo)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(zhuǎn)換器和I2C接口 |
| 文件頁數(shù)： | 7/19頁 |
| 文件大小： | 637K |
| 代理商： | LNBS21 |
LNBS21
7/19
LNBS1 SOFTWARE DESCRIPTION
INTERFACE PROTOCOL
The interface protocol comprises:
- A start condition (S)
- A chip address byte = hex 10 / 11 (the LSB bit
determines read(=1)/write(=0) transmission)
- A sequence of data (1 byte + acknowledge)
- A stop condition (P)
ACK= Acknowledge
S= Start
P= Stop
R/W= Read/Write
SYSTEM REGISTER (SR, 1 BYTE)
R,W= read and write bit
R= Read-only bit
All bits reset to 0 at Power-On
TRANSMITTED DATA (I
2
C BUS WRITE MODE)
When the R/W bit in the chip address is set to 0,
the main μP can write on the System Register
(SR) of the LNBS21 via I
2
C bus. Only 6 bits out of
the 8 available can be written by the μP, since the
re-maining 2 are left to the diagnostic flags, and
are read-only.
X= don't care.
Values are typical unless otherwise specified
RECEIVED DATA (I
2
C bus READ MODE)
The LNBS21 can provide to the Master a copy of
the SYSTEM REGISTER information via I2C bus
in read mode. The read mode is Master activated
by sending the chip address with R/W bit set to 1.
At the following master generated clocks bits, the
LNBS21 issues a byte on the SDA data bus line
(MSB transmitted first).
At the ninth clock bit the MCU master can:
- acknowledge the reception, starting in this way
the
transmission
of
another
LNBS21;
byte
from
the
CHIP ADDRESS
DATA
MSB
0
LSB
R/W ACK
MSB
LSB
S
0
0
1
0
0
0
ACK
P
MSB
R, W
PCL
LSB
R
OLF
R, W
ISEL
R, W
TEN
R, W
LLC
R, W
VSEL
R, W
EN
R
OTF
PCL
ISEL
TEN
LLC
VSEL
EN
OTF
OLF
Function
0
0
1
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
V
OUT
=13V, V
UP
=16V Loopthrough switch open
V
OUT
=18V, V
UP
=21V Loopthrough switch open
V
OUT
=14V, V
UP
=17V Loopthrough switch open
V
OUT
=19V, V
UP
=22V Loopthrough switch open
22KHz tone is controlled by DSQIN pin
22KHz tone is ON, DSQIN pin disabled
I
OUT(min)
=750mA, I
OUT(max)
=1A I
SC
=300mA
I
OUT(min)
=600mA, I
OUT(max)
=900mA I
SC
=300mA
Pulsed (dynamic) current limiting is selected
Static current limiting is selected
Power blocks disabled, Loopthrough switch closed
0
1
0
1
0
1
X
X
X
X
X
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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(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 |
| 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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