- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1953 > MCP2022PT-500E/ST (Microchip Technology)IC TXRX LIN ON-BOARD VREG 14TSSO PDF資料下載
參數(shù)資料
| 型號： | MCP2022PT-500E/ST |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 45/52頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX LIN ON-BOARD VREG 14TSSO |
| 產(chǎn)品培訓模塊： | Microchip MCP20xx LIN Transceiver Overview |
| 標準包裝： | 2,500 |
| 系列： | * |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁當前第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
2005-2012 Microchip Technology Inc.
DS22018F-page 5
MCP2021/2/1P/2P
1.0
DEVICE OVERVIEW
The MCP2021/2/1P/2P provides a physical interface
between a microcontroller and a LIN half-duplex bus. It
is intended for automotive and industrial applications
with serial bus speeds up to 20 Kbaud.
The MCP2021/2/1P/2P provides a half-duplex, bidirec-
tional communications interface between a microcon-
troller and the serial network bus. This device will
translate the CMOS/TTL logic levels to LIN-level logic,
and vice versa.
The LIN specification 2.0 requires that the trans-
ceiver(s) of all nodes in the system be connected via
the LIN pin, referenced to ground, and with a maximum
external termination resistance load of 510
Ω from LIN
bus to battery supply. The 510
Ω corresponds to 1 Mas-
ter and 16 Slave nodes.
The MCP2021/2/1P/2P-500 provides a +5V, 50 mA,
regulated power output. The regulator uses an LDO
design, is short-circuit protected, and will turn the
regulator output off if it falls below 3.5V.
The
MCP2021/2/1P/2P
also
includes
thermal-
shutdown protection.
The regulator is specifically designed to operate in the
automotive environment and will survive +43V load
dump transients, double-battery jumps, and reverse
battery connections when a reverse blocking diode is
used. The other members of the MCP2021/2/1P/2P-
330 family output +3.3V at 50 mA with a turn-off voltage
of
2.5V.
(See
MCP2021/2 wakes from Power-Down mode on a
dominant level on LBUS. MCP2021P/2P wakes at a
transition from recessive level to dominant level on
LBUS.
1.1
Optional External Protection
1.1.1
REVERSE BATTERY PROTECTION
An external reverse-battery-blocking diode should be
used to provide polarity protection (see Figure 1-6).
1.1.2
TRANSIENT VOLTAGE
PROTECTION (LOAD DUMP)
An external 43V transient suppressor (TVS) diode,
between VBB and ground, with a 50
Ω transient protec-
tion resistor (RTP) in series with the battery supply and
the VBB pin protect the device from power transients
(see Figure 1-6) and ESD events. While this protection
is optional, it is considered good engineering practice.
The resistor value is chosen according to Equation 1-1.
EQUATION 1-1:
1.2
Internal Protection
1.2.1
ESD PROTECTION
For component-level ESD ratings, please refer to the
1.2.2
GROUND LOSS PROTECTION
The LIN Bus specification states that the LIN pin must
transition to the recessive state when ground is discon-
nected. Therefore, a loss of ground effectively forces
the LIN line to a hi-impedance level.
1.2.3
THERMAL PROTECTION
The thermal protection circuit monitors the die temper-
ature and is able to shut down the LIN transmitter and
voltage regulator if it detects a thermal overload.
There are three causes for a thermal overload. A ther-
mal shut down can be triggered by any one, or a com-
bination of, the following thermal overload conditions:
Voltage regulator overload
LIN bus output overload
Increase in die temperature due to increase in
environmental temperature
Driving the TXD and checking the RXD pin makes it
possible to determine whether there is a bus contention
(i.e., Rx = low, Tx = high) or a thermal overload condi-
tion (i.e., Rx = high, Tx = low).
RTP <= (VBBmin - 5.5) / 250 mA.
5.5V = VUVLO + 1.0V,
250 mA is the peak current at Power-On when
VBB = 5.5V
相關PDF資料 |
PDF描述 |
|---|---|
| MCP2022T-330E/ST | IC LIN TXRX ON-BD VREG 14TSSOP |
| MCP2036T-I/MG | INTEGRATED CIRCUITS LINEAR - 82 |
| MCP2036T-I/ML | IC AFE KEYLESS ENTRY 16QFN |
| MCP2050-500E/SL | IC TXRX LIN 5.0V LDO/WWDT 14SOIC |
| MCP2140-I/P | IC IRDA CONTROLLER DTE/DCE 18DIP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCP2022T | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:LIN Transceiver with Voltage Regulator |
| MCP2022T-330E/MD | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:LIN Transceiver with Voltage Regulator |
| MCP2022T-330E/MF | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:LIN Transceiver with Voltage Regulator |
| MCP2022T-330E/P | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:LIN Transceiver with Voltage Regulator |
| MCP2022T-330E/SL | 功能描述:LIN 收發(fā)器 LIN ver21 Trnsceivr 33V Vreg + RESET out RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8 |
發(fā)布緊急采購，3分鐘左右您將得到回復。