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参数资料
| 型号： | TA8050P |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 1.5 A, PSFM7 |
| 封装： | PLASTIC, HSIP-7 |
| 文件页数： | 3/9页 |
| 文件大小： | 0K |
| 代理商： | TA8050P |
TA8050P
2005-03-29
3
1. Overvoltage detection (VSD)
Basic operation
When the voltage supplied to the VCC pin is up to the VSD detection voltage, the output is controlled by the input
signals. However, when the VCC voltage exceeds the detection voltage, the output enters high-impedance state
regardless of the input signals.
Detailed description
The VSD voltage is detected by comparing the Zener voltage with the voltage obtained by dividing VCC 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
pins 1 and 2.
2. Overheat detection (TSD)
Basic operation
When the junction (chip) temperature is up to the TSD detection temperature, the output is controlled by the input
signals. When it exceeds the TSD detection temperature, the output enters high-impedance state regardless of
the input signals.
Detailed description
The temperature is detected by monitoring the VF of a diode on the chip. When the diode VF 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 pins 1 and 2.
3. Overcurrent detections (ISD)
Basic operation
When the output current (pin 3 or 5, I sink or I source) is up to the ISD detection current, the output is controlled by
the input signals. When it exceeds the detection current, the output assumes a switching waveform as shown in
Figure 1.
Figure 1. Basic Operation
Detailed description
The output current is detected by monitoring the VBE from each output transistor. One detection circuit connects
to one of the output transistors and leads to the short-circuit protection circuit. When a current exceeding the ISD
detection current flows through one of the four output transistors, the short-circuit protection circuit is activated.
This circuit contains a timer. When the overcurrent condition continues for 20 s (typically), the protection circuit
places the output in high-impedance mode and, 80 s (typically) later, returns the IC to ON mode. The
switching-waveform output is repeated until the overcurrent condition is no longer present.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TA8050P(5,S) | 制造商:Toshiba 功能描述:Bi-directional Motor Driver 7-Pin(7+Tab) HSIP |
| TA8050P(O,S) | 制造商:Toshiba America Electronic Components 功能描述: |
| TA8050PA4K50FE | 制造商:OHMITE 制造商全称:Ohmite Mfg. Co. 功能描述:Power Chip Thick Film on Alumina Substrate |
| TA8050PA4K50JE | 制造商:OHMITE 制造商全称:Ohmite Mfg. Co. 功能描述:Power Chip Thick Film on Alumina Substrate |
| TA8050PA4K50KE | 制造商:OHMITE 制造商全称:Ohmite Mfg. Co. 功能描述:Power Chip Thick Film on Alumina Substrate |
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