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参数资料
型号： MC33975TEKR2
厂商： Freescale Semiconductor
文件页数： 5/32页
文件大小： 0K
描述： IC SWITCH DETECT MULT 32-SOIC
标准包装： 1,000
应用： 开关监控
接口： SPI 串行
封装/外壳： 32-SSOP（0.295"，7.50mm 宽）裸露焊盘
供应商设备封装： 32-SOICW 裸露焊盘
包装： 带卷 (TR)
安装类型： 表面贴装
Analog Integrated Circuit Device Data
Freescale Semiconductor
13
33975
FUNCTIONAL DESCRIPTIONS
FUNCTIONAL PIN DESCRIPTION
In Sleep mode with the WAKE pin high, the falling edge of
WAKE
will place the 33975 in Normal mode. In Sleep mode
with VDD applied, the INT pin must be high for a negative
edge of WAKE to wake up the device. If VDD is not applied to
the device in Sleep mode, INT does not affect the WAKE
operation.
LOAD SUPPLY VOLTAGE (VPWR)
The VPWR pin is battery input and Power-ON Reset to the
33975 IC. The VPWR pin requires external reverse battery
and transient protection. The maximum input voltage on
VPWR is 50 V. All wetting, sustain, and internal logic current is
provided from the VPWR pin.
LOGIC VOLTAGE (VDD)
The VDD input pin is used to determine logic levels on the
microprocessor interface (SPI) pins. Current from VDD is
used to drive the SO output, and the pull-up current for CS
and INT pins. VDD must be applied for a wake-up from the
negative edge of CS or INT.
GROUND (GND)
The GND pin provides ground for the IC as well as ground for
inputs programmed as switch-to-battery inputs.
PROGRAMMABLE SWITCHES (SP0–SP7)
The 33975 device has 8 switch inputs capable of being
programmed to read switch-to-ground or switch-to-battery
contacts. The input is compared with a 4.0 V reference.
When programmed to be switch-to-battery, voltages greater
than 4.0 V are considered closed. Voltages less than 4.0 V
are considered open. The opposite holds true when inputs
are programmed as switch-to-ground. Programming features
are defined in Table 6 through Table 11 in the Functional
Device Operation section of this datasheet beginning on
page 16. Voltages greater than the VPWR supply voltage will
source current through the SP inputs to the VPWR pin.
Transient battery voltages greater than 38/40 V must be
clamped by an external device.
SWITCH-TO-GROUND (SG0–SG13)
The SGn pins are switch-to-ground inputs only. The input is
compared with a 4.0 V reference. Voltages greater than 4.0 V
are considered open. Voltages less than 4.0 V are
considered closed. Programming features are defined in
Table 6 through Table 11 in the Functional Device Operation
section of this datasheet beginning on page 16. Voltages
greater than the VPWR supply voltage will source current
through the SG inputs to the VPWR pin. Transient battery
voltages greater than 38/40 V must be clamped by an
external device.
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相关代理商/技术参数
参数描述
MC33981ABHFK 功能描述:电源开关 IC - 配电 HF 4.0MOHM RDSON SWITCH RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MC33981ABHFKR2 功能描述:电源开关 IC - 配电 HF 4.0MOHM RDSON SWITCH RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MC33981BHFK 功能描述:电源开关 IC - 配电 HF 4.0MOHM RDSON SWITCH RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MC33981BHFKR2 功能描述:电源开关 IC - 配电 HF 4.0MOHM RDSON SWITCH RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
MC33981BPNA 功能描述:电源开关 IC - 配电 VIPER RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5
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