參數(shù)資料
型號： MC33879
廠商： Motorola, Inc.
英文描述： Single Output LDO, 1.0A, Adj.(1.25 to 13.5V), Internal Current limit, Thermal Overload Protection 4-SOT-223
中文描述： 串行配置八路與開放式負(fù)荷開關(guān)電流檢測禁用
文件頁數(shù)： 15/20頁
文件大?。?/td> 408K
代理商： MC33879
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33879
15
SPI DEFINITION
On each SPI communication, a 16-bit command word is sent
to the 33879 and a 16-bit status word is received from the
33879. The MSB is sent and received first. As
Table 1
shows,
the Command Register defines the position and operation the
33879 will perform on rising edge of
CS
. The Fault Register,
shown in
Table 2
, defines the previous state status of the output
driver.
Table 3
identifies the type of fault and the method by
which the fault is communicated to the microprocessor.
Table 1. Command Register Definition
0 = Bits 0 to 7, Output commanded OFF.
0 = Bits 8 to 15, Open Load Detection Current OFF.
1 = Bits 0 to 7, Output commanded ON.
1 = Bits 8 to 15 Open Load Detection Current ON.
Table 2. Fault Register Definition
0 = Bits 0 to 7, No Fault at Output.
1 = Bits 0 to 7, Output Short-to-Battery, Short-to-GND, Open Load,
or T
LIM
.
Bits 8 to 15 will always return “0”.
Table 3. Fault Operation
MSB
LSB
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ON/OFF
Open
Load
Detect
8
ON/OFF
Open
Load
Detect
7
ON/OFF
Open
Load
Detect
6
ON/OFF
Open
Load
Detect
5
ON/OFF
Open
Load
Detect
4
ON/OFF
Open
Load
Detect
3
ON/OFF
Open
Load
Detect
2
ON/OFF
Open
Load
Detect
1
ON/OFF
OUT 8
ON/OFF
OUT 7
ON/OFF
OUT 6
ON/OFF
OUT 5
ON/OFF
OUT 4
ON/OFF
OUT 3
ON/OFF
OUT 2
ON/OFF
OUT 1
MSB
LSB
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
0
0
0
OUT 8
Status
OUT 7
Status
OUT 6
Status
OUT 5
Status
OUT 4
Status
OUT 3
Status
OUT 2
Status
OUT 1
Status
Serial Output (DO) Pin Reports
Overtemperature
Fault reported by serial output (DO) pin.
Overcurrent
DO pin reports short to battery/supply or overcurrent condition.
Output ON Open Load Fault
Not reported.
Output OFF Open Load Fault
DO pin reports output OFF open load condition only with Open Load Detection Current enabled.
DO pin will report “0” for Output OFF Open Load Fault with Open Load Detection Current disabled.
Device Shutdowns
Overvoltage
Total device shutdown at V
PWR
=
27 V–30 V. Resumes normal operation with proper voltage. All
outputs assuming the previous state upon recovery from overvoltage.
Overtemperature
Only the output experiencing an overtemperature shuts down. Output assumes previous state upon
recovery from overtemperature.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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參數(shù)描述
MC33879APEK 功能描述:電源開關(guān) IC - 配電 CONFIG OCTAL SERIAL SW RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（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
MC33879APEKR2 功能描述:電源開關(guān) IC - 配電 CONFIG OCTAL SERIAL SW RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（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
MC33879EK 功能描述:電源開關(guān) IC - 配電 CONFIG OCTAL SERIAL SW W RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（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
MC33879EKR2 功能描述:電源開關(guān) IC - 配電 CONFIG OCTAL SERIAL SW W RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（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
MC33879TEK 功能描述:電源開關(guān) IC - 配電 CONFIG OCTAL SER SWITCH RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（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
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