A3984SLPTR

更新时间： 2024-11-24 03:16:35

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器运动控制电子器件信号电路光电二极管电动机控制
页数	文件大小	规格书
13页	739K
描述
DMOS Microstepping Driver with Translator

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技术参数
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A3984SLPTR 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	TSSOP	包装说明：	HTSSOP, TSSOP24,.25
针数：	24	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.74	模拟集成电路 - 其他类型：	STEPPER MOTOR CONTROLLER
JESD-30 代码：	R-PDSO-G24	长度：	7.8 mm
湿度敏感等级：	1	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：	2 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	HTSSOP
封装等效代码：	TSSOP24,.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）：	225
电源：	3.3/5,35 V	认证状态：	Not Qualified
座面最大高度：	1.2 mm	子类别：	Motion Control Electronics
最大供电电流 (Isup)：	8 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	3 V	表面贴装：	YES
技术：	BCDMOS	温度等级：	OTHER
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：	NOT SPECIFIED
宽度：	4.4 mm	Base Number Matches：	1

A3984SLPTR 数据手册

A3984

DMOS Microstepping Driver with Translator

The A3984 is a complete microstepping motor driver with built-in

translator for easy operation. It is designed to operate bipolar stepper

motors in full-, half-, quarter-, and sixteenth-step modes, with an output

drive capacity of up to 35 V and ±2 A. The A3984 includes a fixed off-

time current regulator which has the ability to operate in Slow or Mixed

decay modes.

Package LP

The translator is the key to the easy implementation of the A3984.

Simply inputting one pulse on the STEP input drives the motor one

microstep. There are no phase sequence tables, high frequency control

GND

CP1

CP2

ENABLE

lines, or complex interfaces to program. The A3984 interface is an ideal

OUT2B

VCP

fit for applications where a complex microprocessor is unavailable or is

overburdened.

VBB2

VREG

MS1

SENSE2

The chopping control in the A3984 automatically selects the current

MS2

OUT2A

OUT1A

SENSE1

VBB1

decay mode (Slow or Mixed). When a signal occurs at the STEP input

pin, the A3984 determines if that step results in a higher or lower

current in each of the motor phases. If the change is to a higher current,

then the decay mode is set to Slow decay. If the change is to a lower

current, then the current decay is set to Mixed (set initially to a fast

decay for a period amounting to 31.25% of the fixed off-time, then

to a slow decay for the remainder of the off-time). This current decay

control scheme results in reduced audible motor noise, increased step

accuracy, and reduced power dissipation.

RESET

ROSC

SLEEP

VDD

OUT1B

DIR

STEP

REF

GND

Internal synchronous rectification control circuitry is provided to

improve power dissipation during PWM operation.

Internal circuit protection includes: thermal shutdown with hysteresis,

undervoltage lockout (UVLO), and crossover-current protection.

Special power-on sequencing is not required.

Approximate Scale 1:1

The A3984 is supplied in a low-profile (1.2 mm maximum), 24-pin

TSSOP with exposed thermal pad (package LP). It is also available

in a lead (Pb) free version (suffix –T), with 100% matte tin plated

leadframes.

ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage,V_BB...................................35 V

Output Current, I_OUT.........................................±2 A^*

Logic Input Voltage, V_IN..................... –0.3 V to 7 V

Sense Voltage, V_SENSE.......................................0.5 V

Reference Voltage, V_REF………..........................4 V

Operating Temperature Range

Ambient, T_A................................. –20°C to 85°C

Junction Temperature, T_J(MAX).....................150°C

Storage Temperature, T_S.................... –55°C to 150°C

^*Output current rating may be limited by duty cycle,

ambient temperature, and heat sinking. Under any

set of conditions, do not exceed the specified current

rating or a junction temperature of 150°C.

FEATURES

Low R_DS(ON)outputs

Automatic current decay mode detection/selection

Mixed and Slow current decay modes

Synchronous rectification for low power dissipation

Internal UVLO and thermal shutdown circuitry

Crossover-current protection

Selection Guide

Part Number

A3984SLP-T

Pb-free*

Yes

Package

24-pin TSSOP

Packing

62 per tube

4000 per reel

A3984SLPTR-T

Yes

*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 LAST TIME BUY.

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: October 31, 2006. Deadline for receipt of LAST TIME BUY orders:

April 27, 2007. These variants include: A3984SLP and A3984SLPTR.

26184.30Bpb

12 3 4 5 6 7...13

中文翻译

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A3984SLPTR 替代型号

型号	品牌	替代类型	描述	数据表
A3984SLPTR-T	ALLEGRO	完全替代	DMOS Microstepping Driver with Translator
A3984SLP-T	ALLEGRO	完全替代	DMOS Microstepping Driver with Translator
A3983SLP-T	ALLEGRO	完全替代	DMOS Microstepping Driver with Translator

与A3984SLPTR相关器件

型号	品牌	获取价格	描述	数据表
A3984SLPTR-T	ALLEGRO	获取价格	DMOS Microstepping Driver with Translator
A3984SLPT-T	ALLEGRO	获取价格	Stepper Motor Controller, 2A, NMOS, PDSO24, 1.20 MM HEIGHT, LEAD FREE, MO-153ADT, TSSOP-24
A3985	ALLEGRO	获取价格	Digitally Programmable Dual Full-Bridge MOSFET Driver
A3985SLD-T	ALLEGRO	获取价格	Digitally Programmable Dual Full-Bridge MOSFET Driver
A3985SLDTR-T	ALLEGRO	获取价格	Digitally Programmable Dual Full-Bridge MOSFET Driver
A3986	ALLEGRO	获取价格	Dual Full-Bridge MOSFET Driver with Microstepping Translator
A3986_12	ALLEGRO	获取价格	Dual Full-Bridge MOSFET Driver with Microstepping Translator
A3986SLD-T	ALLEGRO	获取价格	Dual Full-Bridge MOSFET Driver with Microstepping Translator
A3986SLDTR-T	ALLEGRO	获取价格	Dual Full-Bridge MOSFET Driver with Microstepping Translator
A3987	ALLEGRO	获取价格	DMOS Microstepping Driver with Translator

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