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参数资料
| 型号： | MC33143 |
| 厂商： | 飞思卡尔半导体(中国)有限公司 |
| 英文描述： | DUAL HIGH–SIDE SWITCH(双高端开关) |
| 中文描述： | 双高边开关（双高端开关） |
| 文件页数： | 6/8页 |
| 文件大小： | 279K |
| 代理商： | MC33143 |
MC33143
6
MOTOROLA ANALOG IC DEVICE DATA
PIN FUNCTION DESCRIPTION
(continued)
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INT
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GTST
The INTerrupt pin INT is active logic low and indicates the presence of a fault on either the output. INT
can be paralleled with additional fault pins and used as a system CPU interrupt to indicate the presence
of a fault. The system CPU can then read STAT1–2 to determine the specific type of fault occurring. INT
will be logic high during normal operation. A logic low will result if a fault occurs on either OUT1 or
OUT2. INT has an internal active pull–up and requires no external pull–up resistor to be used. The INT
output has sufficient current drive capability to afford paralleling of up to five INT pins. A 10 k
resistor
between INT and the system CPU may improve the FMEA score if INT is externally shorted to OUT1.
This pin should be left unconnected if the feature is not used.
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operating mode and not be left “floating”.
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The Gate TeST (GTST) pin is used to stress the devices DMOS gates during testing operations. This pin
should normally be connected to ground in the application.
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condition of SFPD does not affect fault reporting. Current and thermal limit remain active when the
demand will latch OFF only the output affected. The device will then automatically begin active
as a logic low. A 10 k
resistor between SFPD and the system CPU may improve the FMEA score if
15
23
Figure 3. Function Table
Device Condition
In
Out
STAT
Output Condition
STAT Condition
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Normal
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Low
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Low
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Normal ON when short is
High
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clears when short is removed.
Normal OFF
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Normal
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High
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High
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Low
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Normal ON
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“ON” open fault reported. Fault
clears when short is removed.
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clears when load is connected.
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Short
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HIgh
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High
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Low
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Normal ON
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“ON” open fault reported. Fault
clears with no thermal limit.
Normal OFF
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High
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Low
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Low
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Output disabled. Output Retries
with no thermal limit.
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and no thermal limit required to
clear the fault.
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Low
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Low
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no overvoltage.
Low
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Fault clears with no
Normal OFF
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overvoltage.
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Overvoltage fault reported.
Fault clears with no
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Voltage Mode,
High
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High–Z
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Output disabled.
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STAT tri–stated, no faults
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reported.
Low
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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