Datasheet > A3992SB-T

A3992SB-T

更新时间： 2024-02-11 01:07:34

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
13页	588K
描述
Stepper Motor Controller, 1.5A, NMOS, PDIP24, LEAD FREE, PLASTIC, MS-001BE, DIP-24

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A3992SB-T 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP, DIP24,.3	针数：	24
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	8.5
其他特性：	ALSO REQUIRES 15V TO 50V VBB SUPPLY	模拟集成电路 - 其他类型：	STEPPER MOTOR CONTROLLER
JESD-30 代码：	R-PDIP-T24	JESD-609代码：	e3
长度：	30.1 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：	1.5 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	DIP
封装等效代码：	DIP24,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	50 V	认证状态：	Not Qualified
座面最大高度：	5.33 mm	子类别：	Motion Control Electronics
最大供电电流 (Isup)：	12 mA	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：	NO	技术：	NMOS
温度等级：	OTHER	端子面层：	Matte Tin (Sn)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.62 mm	Base Number Matches：	1

A3992SB-T 数据手册

DMOS Dual Full-Bridge

Microstepping PWM Motor Driver

A3992

Serial Interface Description

The A3992 is controlled via a 3 wire serial port. The

programmable functions allow maximum ﬂexibility in

conﬁguring the PWM to the motor drive requirements.

The serial data is written as two 19 bit words, 1 bit

to select which word (referred to here as Word 0 and

Word 1) and 18 bits of data. The serial port is deﬁned

in the following tables and text descriptions.

D7 – 12 Bridge 2 Linear DAC. 6 bit word to set the

desired current level for bridge 2. Setting all bits to

zero disables Full Bridge 2, all drivers off. (See Cur-

rent Regulation in the Functional Description section.)

D13 Bridge 1 Phase. This bit controls the direction

of current for motor phase 1 as deﬁned below:

D13

OUT1A

OUT1B

Word 0 Bit Assignments

Word 0 is selected by setting D0 = 0. Assignments are

summarized in the following table, and described in

detail in the remainder of this section.

Word 0 Bit Assignments

D14 Bridge 2 Phase. This bit controls the direction

of current for motor phase 2 as deﬁned below:

D14

OUT2A

OUT2B

Bit

Function

Word Select = 0

Bridge 1, DAC, LSB

Bridge 1, DAC, Bit2

Bridge 1, DAC, Bit3

Bridge 1, DAC, Bit4

Bridge 1, DAC, Bit 5

Bridge 1, DAC, MSB

Bridge 2, DAC, LSB

Bridge 2, DAC, Bit2

Bridge 2, DAC, Bit3

Bridge 2, DAC, Bit4

Bridge 2, DAC, Bit 5

Bridge 2, DAC, MSB

Bridge 1 Phase

D15 Bridge 1 Mode. This bit determines the decay

for Full Bridge 1 as deﬁned below:

D15

Mode

Mixed Decay

Slow Decay

D16 Bridge 2 Mode. This bit determines the decay

for Full Bridge 2 as deﬁned below:

D16

Mode

D10

D11

D12

D13

D14

D15

D16

D17

D18

Mixed Decay

Slow Decay

D17 Ref Select. This bit determines the reference

input for the two 6 bit linear DACs. Logic low selects

internal 2 V reference voltage, logic high selects ex-

ternal reference input on the REF pin.

Bridge 2 Phase

Bridge 1 Mode

Bridge 2 Mode

Reference Select

Range Select

D18 G_mRange Select. D18 determines if the scaling

factor used is 4 or 8:

D1 – D6 Bridge 1, Linear DAC. 6 bit word to set de-

sired current level for bridge 1. Setting all bits to zero

disables Full Bridge 1, all drivers off. (See Current

Regulation in the Functional Description section.)

D18

Divider

÷ 8

Load Current

I_TRIP= V_DAC/(R_SENSE× 8)

I_TRIP= V_DAC/(R_SENSE× 4)

÷ 4

Allegro MicroSystems, LLC

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

1 2 3 456 7 8...13

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