參數(shù)資料
型號(hào)： MC33888FB
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Quad High Side and Octal Low Side Switch for Automotive Applications(4高端開關(guān)及8低端開關(guān)，用于自動(dòng)應(yīng)用)
中文描述： 四高側(cè)和汽車應(yīng)用八路低邊開關(guān)（4高端開關(guān)及8低端開關(guān)，用于自動(dòng)應(yīng)用）
文件頁(yè)數(shù)： 17/18頁(yè)
文件大?。?/td> 711K
代理商： MC33888FB
MC33888FB
Quad High Side and Octal Low Side Switch for Automotive
17
can be cleared on a rising edge of CSB. If the fault remains, the retried output will latch off after the fault timer expires and the
fault bit will remain set in the status register.
For the LS output of interest, if a D4-D11 bit was set to a logic L in the OLCR register, the output experiencing an over-current
condition is not disabled until an over-temperature fault threshold has been reached. The specific output goes into an analog
current limit mode of operation ILIM . The QHSOLSS uses over-temperature shutdown to protect all outputs in this mode of
operation. If the over-current condition is removed before the output has reached its over-temperature limit, the output will
function as if no fault has occurred.
Note that each pair of Low Side Drivers, LS4-5, LS6-7, LS8-9, and LS10
–
11 consist of a 500mA and 800mA output. As shown
in the device pinout, each of these pairs of outputs share ground bondwires. The bondwires are not rated to handle both outputs
in current limit mode simultaneously.
OVER-CURRENT FAULT REQUIREMENTS: HS OUTPUT
For the HS output of interest, the output current is limited to one of four levels depending upon : the type of HS output, the
amount of time that has elapsed since the output was switched on, and the state of the CLOCCR register. Assuming that bits
D0-D3 of the CLOCCR register are at logic L, the current limit levels of the outputs will be initially at their peak levels as specified
by the HSxxilimpk. After the HS output is switched on, the peak current timer will start. After a period of time Tpct, the current
limit level will change to the sustain levels HSxxilimsus.
For the HS output of interest, if a D0-D3 bit of the CLOCCR is at logic H, then the assigned output will only current limit at the
sustain level specified by HSxxilimsus.
Current is limited until the over temperature circuitry shuts OFF the device. The device will turn ON automatically when the
temperature fails below the TLIM(hyst). This cycle continues indefinitely until action is taken by the master to shut the output(s)
OFF.
REVERSE BATTERY REQUIREMENTS
The LS and HS outputs survive the application of reverse battery as low as
–
16V.
GROUND DISCONNECT PROTECTION
In the event that the QHSOLSS ground is disconnected from load ground, the device protects itself and safely turns off the
outputs, regardless of the state of the output at the time of disconnection.
BATTERY DISCONNECT PROTECTION
In the event that the QHSOLSS is disconnected from Vpwr, the device protects itself and safely turn off the outputs, regard-
less of the state of the output at the time of disconnection.
UNDER-VOLTAGE SHUTDOWN REQUIREMENTS
All outputs turn off at some battery voltage below 6.0V, however, as long as the level stays above 5.0V, the internal logic states
within the device are designed to be sustained. This ensures that when the battery level then rises above 6.0V, the device will
return to the state that it was in prior to the excursion between 5.0V and 6.0V (assuming that there was no SPI communication
or direct input changes during the event). If the battery voltage falls to a level below 5.0V, then the internal logic is reinitialized
and the device is then in the Default state upon the return of levels in excess of 6.0V.
OUTPUT VOLTAGE CLAMPING
Each output has an internal clamp to provide protection and dissipate the energy stored in inductive loads. Each clamp
independently limits the drain to source voltage to the range specified in the table
“
Power output characteristics
”
.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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MC33888FBR2 功能描述:電源開關(guān) IC - 配電 QHSOLSS RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
MC33888PNB 制造商:FREESCALE-SEMI 功能描述:
MC33888PNBR2 制造商:FREESCALE-SEMI 功能描述:
MC33889BDW 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SBC LIGHT PASS 3.3 RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
MC33889BDWR2 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SBC LIGHT PASS 3.3 RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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