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參數(shù)資料
| 型號： | TA8050F |
| 廠商： | Toshiba Corporation |
| 英文描述： | TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic |
| 中文描述： | 東芝雙極線性集成電路硅單片 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 184K |
| 代理商： | TA8050F |
TA8050F
2002-02-27
3
Description of Multi-Protective Operation
The TA8050F has functions for protection from overvoltage (V
SD
), overcurent (I
SD
), and overheat (T
SD
). These
functions protect the IC (and the motor load in some cases) from deterioration or destruction due to power-related
overstress.
The three functions work independently.
Each function is explained below.
1. Overvoltage protection (V
SD
)
●
Basic operation
When the voltage supplied to the V
CC
pin is up to the V
SD
detection voltage, the output is controlled by
the input signals. However, when the V
CC
voltage exceeds the detection voltage, the output enters
high-impedance state regardless of the input signals.
●
Detailed explanation
The V
SD
voltage is detected by comparing the Zener voltage with the voltage obtained by dividing V
CC
with a resistor. When the center voltage of the resistor is higher than the Zener voltage, a transistor-off
instruction is issued to the control logic. When it is lower than the Zener voltage, the logic is controlled
by the input signals from DI1 and DI2.
2. Overheat protection (T
SD
)
●
Basic operation
When the junction (chip) temperature is up to the T
SD
detection temperature, the output is controlled
by the input signals. When it exceeds the T
SD
detection temperature, the output enters high-impedance
state regardless of the input signals.
●
Detailed explanation
The temperature is detected by monitoring V
F
of a diode on the chip. When the diode V
F
is lower than
the internal reference voltage, an output transistor-off instruction is issued to the control logic. When it
is higher than the internal reference voltage, the logic is controlled by the input signals from DI1 and
DI2.
DI1
DI2
CONTROL LOGIC
V
SD
M ( )
M ( )
I
SD
T
SD
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PDF描述 |
|---|---|
| TA8050P | 1.5A MOTOR DRIVER WITH VRAKE FUNCTION |
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TA8050P | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:1.5A MOTOR DRIVER WITH VRAKE FUNCTION |
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| TA8050P(O,S) | 制造商:Toshiba America Electronic Components 功能描述: |
| TA8050PA4K50FE | 制造商:OHMITE 制造商全稱:Ohmite Mfg. Co. 功能描述:Power Chip Thick Film on Alumina Substrate |
| TA8050PA4K50JE | 制造商:OHMITE 制造商全稱:Ohmite Mfg. Co. 功能描述:Power Chip Thick Film on Alumina Substrate |
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