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A8904SLB-TTR

更新时间： 2024-11-21 20:10:31
品牌 Logo 应用领域
急速微 - ALLEGRO 电动机控制光电二极管
页数 文件大小 规格书
18页 725K
描述
Brushless DC Motor Controller, 1.4A, BCDMOS, PDSO24, LEAD FREE, BATWING, SOIC-24

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A8904SLB-TTR 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP,
针数：24Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.83模拟集成电路 - 其他类型：BRUSHLESS DC MOTOR CONTROLLER
JESD-30 代码：R-PDSO-G24JESD-609代码：e3
长度：15.4 mm功能数量：1
端子数量：24最高工作温度：85 °C
最低工作温度：-20 °C最大输出电流：1.4 A
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：2.65 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.5 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：BCDMOS
温度等级：OTHER端子面层：MATTE TIN
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：7.5 mmBase Number Matches：1

A8904SLB-TTR 数据手册

 浏览型号A8904SLB-TTR的Datasheet PDF文件第2页浏览型号A8904SLB-TTR的Datasheet PDF文件第3页浏览型号A8904SLB-TTR的Datasheet PDF文件第4页浏览型号A8904SLB-TTR的Datasheet PDF文件第5页浏览型号A8904SLB-TTR的Datasheet PDF文件第6页浏览型号A8904SLB-TTR的Datasheet PDF文件第7页 
8904  
3-PHASE BRUSHLESS DC MOTOR  
CONTROLLER/DRIVER WITH BACK-EMF SENSING  
A8904SLB (SOIC)  
The A8904SLB and A8904SLP are three-phase brushless dc motor  
controller/drivers designed for applications where accurate control of high-  
speed motors is required. The three half-bridge outputs are low on-resistance  
n-channel DMOS devices capable of driving up to 1.2 A. The A8904 provides  
complete, reliable, self-contained back-EMF sensing, motor startup and  
running algorithms. A programmable digital frequency-locked loop speed  
control circuit together with the linear current control circuitry provides  
precise motor speed regulation.  
A serial port allows the user to program various features and modes of  
operation, such as the speed control parameters, startup current limit, sleep  
mode, direction, and diagnostic modes.  
The A8904 is fabricated in Allegro’s BCD (Bipolar CMOS DMOS)  
process, an advanced mixed-signal technology that combines bipolar, analog  
and digital CMOS, and DMOS power devices. The A8904SLB is provided in  
a 24-lead wide-body SOIC batwing package. The A8904SLP is provided in a  
thin (<1.2 mm), 28-lead TSSOP package with an exposed thermal pad. Each  
package type is available in a lead-free version (100% matte tin leadframe).  
Absolute Maximum Ratings  
Features  
„ Pin-for-pin replacement for A8902CLBA  
„ Startup commutation circuitry  
Load Supply Voltage, VBB . . . . . . . . . . . . 15 V  
Output Current1, IOUT . . . . . . . . . . . . . . . . . . . . . ±1.4 A  
PeakOutputCurrent(Brake)2,IOUT(BRK)  
Period2 for IOUT(BRK) to fall from  
. ±3.0 A  
„ Sensorless commutation circuitry  
„ Option of external sector data tachometer signal  
„ Option of external speed control  
±3.0 A to ±1.4 A . . . . . . . . . . . . . . . 800 ms  
Logic Supply Voltage, VDD . . . . . . . . . . . 7.0 V  
Logic Input Voltage Range, VIN  
(continuous) . . . . . . -0.3 V to VDD + 0.3 V  
(tw <30 ns) . . . . . . . -1.0 V to VDD + 1.0 V  
Package Power Dissipation, PD . . See Graph  
Operating Temperature, TA . . . -20°C to +85°C  
Junction Temperature3, TJ . . . . . . . . . +150°C  
Storage Temperature,TS . . . . -55°C to +150°C  
„ Oscillator operation up to 20 MHz  
„ Programmableovercurrentlimit  
„ Transconductance gain options: 500 mA/V or 250 mA/V  
„ Programmablewatchdogtimer  
„ Directional control  
„ Serial Port Interface  
1Output current rating may be restricted to a value  
determined by system concerns and factors. These  
include: system duty cycle and timing, ambient  
temperature, and use of any heatsinking and/or forced  
cooling. For reliable operation, the specified maximum  
junction temperature should not be exceeded.  
2Peak output current is a transient condition that  
occurs during braking when the motor acts as a  
generator. The 3 A level is based on the maximum  
peak of a sine wave that is damped. The maximum  
period between the initial brake being applied and the  
current through the drivers falling to 1.4 A should not  
exceed 800 ms. See Braking section for more  
information.  
„ TTL-compatibleinputs  
„ System diagnostics data out ported in real time  
„ Dynamic braking through serial port or external terminal  
Part Number  
Pb-free*  
Package  
Packing  
A8904SLB-T  
Yes  
Yes  
Yes  
Yes  
24-pin SOIC  
24-pin SOIC  
28-pin TSSOP  
31 per tube  
450 per reel  
50 per tube  
A8904SLBTR-T  
A8904SLP-T  
A8904SLPTR-T  
28-pin TSSOP 4000 per reel  
*Pb-based variants are being phased out of the product line. The variants cited in this footnote  
are in production but have been determined to be NOT FOR NEW DESIGN. This classification  
indicates that sale of this device is currently restricted to existing customer applications. The  
variants should not be purchased for new design applications because obsolescence in the  
near future is probable. Samples are no longer available. Status change: May 1, 2006. These  
3Fault conditions that produce excessive junction  
temperature will activate device thermal shutdown  
circuitry. These conditions can be tolerated, but should  
be avoided.  
variantsinclude:A8904SLB,A8904SLBTR,A8904SLP,andA8904SLPTR.  
1234567...18

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 		3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING AND POWER DMOS OUTPUTS
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