A8904SLP

更新时间： 2024-11-20 22:26:51

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器电动机控制电机控制器
页数	文件大小	规格书
18页	835K
描述
3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING

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技术参数
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A8904SLP 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SSOP	包装说明：	HTSSOP, TSSOP28,.25
针数：	28	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.87	模拟集成电路 - 其他类型：	BRUSHLESS DC MOTOR CONTROLLER
JESD-30 代码：	R-PDSO-G28	JESD-609代码：	e0
长度：	9.7 mm	功能数量：	1
端子数量：	28	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：	HTSSOP
封装等效代码：	TSSOP28,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	240
电源：	5,4/14 V	认证状态：	Not Qualified
座面最大高度：	1.2 mm	子类别：	Motion Control Electronics
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：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	4.4 mm
Base Number Matches：	1

A8904SLP 数据手册

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 SSOP package with an exposed thermal pad. Each

package type is available in a lead-free version (100% matte tin leadframe).

Absolute Maximum Ratings

Load Supply Voltage, V_BB. . . . . . . . . . . . 15 V

Features

Output Current¹, I_OUT^{. . . . . . . . . . . . . . . . . . . . .}±1.4 A

Pin-for-pin replacement for A8902CLBA

PeakOutputCurrent(Brake)²,I_OUT(BRK)

Period²for I_OUT(BRK)to fall from

. ±3.0 A

Startup commutation circuitry

±3.0 A to ±1.4 A . . . . . . . . . . . . . . . 800 ms

Logic Supply Voltage, V_DD. . . . . . . . . . . 7.0 V

Logic Input Voltage Range, V_IN

Sensorless commutation circuitry

Option of external sector data tachometer signal

Option of external speed control

Oscillator operation up to 20 MHz

Programmable overcurrent limit

Transconductance gain options: 500 mA/V or 250 mA/V

Programmable watchdog timer

(continuous) . . . . . . -0.3 V to V_DD+ 0.3 V

(t_w<30 ns) . . . . . . . -1.0 V to V_DD+ 1.0 V

Package Power Dissipation, P_D. . See Graph

Operating Temperature, T_A. . . -20°C to +85°C

Junction Temperature³, T_J. . . . . . . . . +150°C

Storage Temperature,T_S. . . . -55°C to +150°C

Directional control

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.

Serial Port Interface

TTL-compatible inputs

System diagnostics data out ported in real time

Dynamic braking through serial port or external terminal

Always order by complete part number:

Part Number

Package

A8904SLB

24-pin batwing SOIC

³Fault conditions that produce excessive junction

temperature will activate device thermal shutdown

circuitry. These conditions can be tolerated, but should

be avoided.

A8904SLB-T

A8904SLP

A8904SLP-T

24-pin batwing SOIC; Lead-free

28-pin SSOP with Exposed Thermal Pad

24-pin SSOP with Exposed Thermal Pad; Lead-free

12 3 4 5 6 7...18

中文翻译

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A8904SLP 替代型号

型号	品牌	替代类型	描述	数据表
A8904SLPTR-T	ALLEGRO	完全替代	3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING

与A8904SLP相关器件

型号	品牌	获取价格	描述	数据表
A8904SLP-T	ALLEGRO	获取价格	3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
A8904SLPTR-T	ALLEGRO	获取价格	3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
A8905CLB	ALLEGRO	获取价格	3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
A8906CLB	ALLEGRO	获取价格	BIDIRECTIONAL 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
A8909CLB	ALLEGRO	获取价格	3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING AND POWER DMOS OUTPUTS
A8920SLR	ALLEGRO	获取价格	DUAL SCHOTTKY DIODE
A8920SLRTR	ALLEGRO	获取价格	暂无描述
A8922SEA	ETC	获取价格	DC Motor Controller/Driver
A8925	ALLEGRO	获取价格	3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OU
A8925CEB	ALLEGRO	获取价格	3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH LINEAR CURRENT CONTROL AND POWER DMOS OU

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