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(kāi)關(guān)及8低端開(kāi)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(kāi)關(guān)（4高端開(kāi)關(guān)及8低端開(kāi)關(guān)，用于自動(dòng)應(yīng)用）
文件頁(yè)數(shù)： 16/18頁(yè)
文件大?。?/td> 711K
代理商： MC33888FB
MC33888FB
DEVICE DESCRIPTION
Quad High Side and Octal Low Side Switch for Automotive
16
by a logic H for each output in the QHSOLSS status word (TABLE 3).
). If the fault is removed, the status bit for the faulted
output will be cleared by a rising edge on CSB.
The FLTB pin is driven to a logic L when a fault exists on any of the outputs. FLTB provided real time monitoring of the over-
voltage fault. For the high side outputs, FLTB provides real time monitoring of the open-load and over-temp. For the low side
outputs, the FLTB is latched to a logic L for open-load, over-temp, and over-current faults. The latch is cleared by toggling the
state of the faulted output or by brinding RSTB low.
OVER-TEMPERATURE FAULT REQUIREMENTS
The QHSOLSS incorporates over-temperature detection and shutdown circuitry into each individual output structure. Over-
temperature detection occurs when an output is in the on state. When an output is shutdown, due to an over-temperature
condition, no other outputs is affected. The output experiencing the fault, is shutdown to protect itself from damage. A fault bit is
loaded into the status register if the over-temp condition is removed, the fault bit is cleared upon the rising edge of CSB.
For the LS outputs, the faulted output is latched OFF during an over-temp condition. If the temperature falls below the recovery
level,
“
TLIM(hyst)
”
, then the output can be turned back ON only after the output has first been commanded OFF either through
the SPI or the ILS, depending on the logic configuration.
For the HS output(s), an over-temperature condition will result in the output(s) turning OFF until the temperature falls below the
TLIM(hyst). This cycle will continue indefinitely until action is taken by the master to shut the output(s) OFF.
OVER-VOLTAGE FAULT REQUIREMENTS
The QHSOLSS do shutdown all outputs during an over-voltage condition on the VPWR pin. The outputs remain in the off state,
until the over-voltage condition is removed. Fault status for all outputs is latched into the status register. Following an over-
voltage condition, the next write cycle sent by the SO pin of the QHSOLSS is logic H on OD0-OD11, indicating all outputs have
shutdown. If the over-voltage condition is removed, the status register can be cleared by a rising edge on CSB.
OPEN LOAD FAULT
The QHSOLSS incorporates open-load detection circuitry on every output. A HS or LS Output Open Load Fault is detected and
reported as a fault condition when the corresponding output is disabled (OFF) if it was configured for open load detection by
setting the appropriate bit to logic L (HS0-HS3), or logic H (LS4-LS11) in the OLFCR register.
The HS open load fault is detected and latched into the status register after the internal gate voltage is pulled low enough to turn
off the output. If the open load fault is removed or if the faulted output is commanded ON, the status register can be cleared by a
rising edge on CSB. Note that the device default state will enable the HS open load detection and disable the LS open load
detection circuits, respectively.
Figure 3. LS Output OFF Open Load Detect
OVER-CURRENT FAULT REQUIREMENTS: LS OUTPUT
An over-current condition is defined as any current value greater than ILIM (500mA min value)for LS5, 7, 9, 11 and 800mA min
value for LS4, 6, 8, 10). The status of the corresponding bit in the CLOCCR register determines whether a specific output will
shutdown, or will continue to operate in an analog current limited mode, until either the over-current condition is removed or the
thermal shutdown limit is reached (see Figure3). If the over-current shutdown mode is disabled, the fault reporting is disabled as
well.
For the LS output of interest, if a D4-D11 bit was set to a logic H in the OLCR register, the over-current protection shutdown
circuitry will be enabled for that output. When a low side output is commanded ON either from the SPI or the ILS pin, the drain of
the low side driver will be monitored for a voltage greater than the Fault Detect Threshold (3V typ). If the drain voltage exceeds
this threshold, a timer will start and the output will be turned off and a fault latched in the status register after the timeout expires.
The faulted output can be retried only by commanding the output OFF and back ON either through the SPI or the ILS pin,
depending on the logic configuration. If the fault is gone, the retried output will return to normal operation and the status register
For More Information On This Product,
Vthreshol
LOW =
QHSOLSS DEVICE
50
Mosfet
O
OUTPU
RL
VPW
F
Freescale Semiconductor, Inc.
n
.
相關(guān)PDF資料
PDF描述
MC33889 System Basis Chip (SBC) with Low Speed Fault Tolerant CAN Interface
MC33897 Single-Wire CAN Transceiver(單線CAN收發(fā)器)
MC33972 Multiple Switch Detection Interface with Suppressed Wake-Up(帶抑制喚醒功能的多開(kāi)關(guān)檢測(cè)接口)
MC33976 Dual Gauge Driver with Configurable Response Time(帶可設(shè)置響應(yīng)時(shí)間的雙標(biāo)尺驅(qū)動(dòng)器)
MC33984 Dual Intelligent High-Current Self-Protected Silicon High-Side Switch (4.0 mOhm)(雙智能大電流帶自保護(hù)功能的硅高端開(kāi)關(guān)（4mOhm）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC33888FBR2 功能描述:電源開(kāi)關(guān) IC - 配電 QHSOLSS RoHS:否 制造商:Exar 輸出端數(shù)量:1 開(kāi)啟電阻（最大值）:85 mOhms 開(kāi)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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*