參數(shù)資料
型號： KA2811C
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 運動控制電子
英文描述： 12V Spindle Motor and Voice Coil Motor Driver(心軸電機和音圈電機驅動器)
中文描述： VOICE COIL MOTOR CONTROLLER, 2 A, PQFP48
封裝： 14 X 14 MM, HEAT SINK, QFP-48
文件頁數(shù)： 18/28頁
文件大小： 313K
代理商： KA2811C
KA2811C
18
Figure 3. VCM gain amp circuit
5. Power Fail Detector
It checks the power of 12V and 5V.
The bandgap reference circuit is used to maintain internal reference voltage.
Assume in Fig.4 that the bandgap reference voltage is 1.5V and the normal voltage level of V
CC
1 & 2 (12V) or V
CC
3 (5V) is
decreased.
If the voltage at any one pin 22, 23 drops down to 1.5V level, when the comparator output (PFAIL) turns to low from high
which is normal running state.
In this example, the voltages of V
CC
1 & 2 and V
CC
3 are obtained by the following expressions:
Hysteresis: V
CC
1, 2 = 90mV (Typ)
V
CC
3 = 45mV (Typ)
+
+
45
37
32
48
34
33
From
D/A. converter
Vref
Vout
R2P
1
To
VCM(+)
RFP
R1N
RFN
Extermal circuit
Intermal circuit
High gain amp
Low gain amp
R1P
R1N
R1P = R1N
R2P = R2N
RFP = RFN
V
CC
1 2
,
Vpin no. 22
--------+
R2
×
=
1.5 V
----------------------------+
]
2.25 k
×
=
9.999 V
or less
=
V
CC
3
Vpin no. 23
--------+
R4
×
=
1.5 V
----------------------------+
]
1.5 k
×
=
4.757 V
or less
=
相關PDF資料
PDF描述
KA2820D Stepping Motor Driver(步進馬達驅動器)
KA2821D The KA2821D is a monolithic integrated circuit, and suit able as a two-phase stepping motor driver of a 3.5-inch FDD system
KA2822BD 3-Phase BLDC Motor Driver
KA2822BDTF 3-Phase BLDC Motor Driver
KA2822D 3-Phase BLDC Motor Driver
相關代理商/技術參數(shù)
參數(shù)描述
KA2821D 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:The KA2821D is a monolithic integrated circuit, and suit able as a two-phase stepping motor driver of a 3.5-inch FDD system
KA2822BD 功能描述:馬達/運動/點火控制器和驅動器 BLDC Motor Driver 3 Phase 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
KA2822BDTF 功能描述:馬達/運動/點火控制器和驅動器 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
KA2822CD 功能描述:馬達/運動/點火控制器和驅動器 BLDC Motor Driver 3 Phase 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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
KA2822CDTF 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:3-Phase BLDC Motor Driver
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*