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參數(shù)資料
| 型號： | TA8429H |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 4.5 A, PZFM12 |
| 封裝： | 1.78 MM PITCH, PLASTIC, HZIP-12 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 414K |
| 代理商： | TA8429H |
TA8429H/HQ
2006-3-2
4
Over-current Protection (ISD)
● Basic operation
When the output current (pin 4 or 8, that is, Isink or Isource) is equal to or lower than the ISD detection
current, the input signal controls the output. If the output current exceeds the detection current, it changes
to a switching waveform shown in Figure 1.
Figure 1 Basic operation
● Explanation of the operation
The output current is detected by monitoring the VBE of each output transistor. A detector element is
connected to each output transistor and to a short-circuit prevention circuit. If a current higher than the ISD
detection current flows through one of the four output transistors, the short-circuit prevention circuit starts
operating. This circuit incorporates a timer. If the over-current mode lasts for 20
s (typically), the output is
switched to the high-impedance state. It returns to the ON mode in 80
s (typically). If the IC is still in the
over current mode, the switching mode stated above is repeated until the IC is released from the
over-current mode.
This circuit cannot limit all types of over current. If the outputs are short-circuited to each other or to a
ground, the IC may break down before the protection circuit starts operating. Therefore use a resistor or fuse
in the supply voltage (VS) line.
Detection current of 5 A
(typically)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TA8429HQ | 制造商:Toshiba America Electronic Components 功能描述:BRUSH DC MOTOR CONTROLLER, 4.5 A, PZFM12 |
| TA8429HQ(5) | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 Bridge Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TA8429HQ(O) | 功能描述:馬達(dá)/運(yùn)動/點(diǎn)火控制器和驅(qū)動器 Bridge Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TA8429HQ(O,S) | 制造商:Toshiba America Electronic Components 功能描述:Moter Driver,Full Brdg Driver,HZIP12 |
| TA8430 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:STEPPING MOTOR DRIVER IC |
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