A3973SB

更新时间： 2024-11-20 22:22:03

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电机
页数	文件大小	规格书
12页	201K
描述
DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER

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技术参数
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A3973SB 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	DIP	包装说明：	DIP,
针数：	24	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.91	Is Samacsys：	N
模拟集成电路 - 其他类型：	STEPPER MOTOR CONTROLLER	JESD-30 代码：	R-PDIP-T24
JESD-609代码：	e0	长度：	31.875 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 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	240
认证状态：	Not Qualified	座面最大高度：	5.33 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：	NO
温度等级：	OTHER	端子面层：	TIN LEAD
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：	30
宽度：	7.62 mm	Base Number Matches：	1

A3973SB 数据手册

3973

DUAL DMOS FULL-BRIDGE MICRO-

STEPPING PWM MOTOR DRIVER

PRELIMINARY INFORMATION

(Subject to change without notice)

December 1, 2000

Designed for pulse-width modulated (PWM) current control of

bipolar microstepping stepper motors, the A3973SB and A3973SLB are

capable of continuous output currents to 1 A and operating voltages to

35 V. Internal fixed off-time PWM current-control timing circuitry can

be programmed via a serial interface to operate in slow, fast, and mixed

current-decay modes. The A3973SB (DIP) and the A3973SLB (SOIC)

are electrically identical and differ only in package style.

The desired load-current level is set via the serial port with two 6-bit

linear DACs in conjunction with a reference voltage. The six bits of

control allow maximum flexibility in torque control for a variety of step

methods, from microstepping to full-step drive. Load current is set in

1.56% increments of the maximum value.

Synchronous rectification circuitry allows the load current to flow

through the low r_DS(on)of the DMOS output driver during the current

decay. This feature will eliminate the need for external clamp diodes in

most applications, saving cost and external component count, while

minimizing power dissipation.

Internal circuit protection includes thermal shutdown with hyster-

esis, transient-suppression diodes, and crossover-current protection.

Special power-up sequencing is not required.

VCP

CP1

CP2

OSC

23 SLEEP

VREG

OUT1B

LOAD

21 OUT2B

LOAD

SUPPLY

BB1

BB2

GROUND

SENSE

OUT2A

LOGIC

OUT1A

STROBE

VDD

SUPPLY

MUX

CLOCK

REF

DATA 12

Dwg. PP-069-3

ABSOLUTE MAXIMUM RATINGS

The A3973SB is supplied in a 24-lead plastic DIP with a copper

batwing power tab; the A3973SLB is supplied in a 24-lead plastic SOIC

with a copper batwing power tab for surface-mount applications. The

power tabs are at ground potential and need no electrical isolation.

at T_A= +25°C

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

Output Current, I_OUT...................... 1.0 A

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

Logic Input Voltage Range,

FEATURES

V_IN................ -0.3 V to V_DD+ 0.3 V

1 A, 35 V Continuous Output Rating

Reference Voltage, V_REF..................... 3 V

Sense Voltage (dc), V_S................ 500 mV

Package Power Dissipation, P_D

A3973SB ............................... 3.1 W

A3973SLB ............................ 2.2 W

Operating Temperature Range,

T_A.......................... -20°C to +85°C

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

Storage Temperature Range,

I Low r_DS(on)DMOS Output Drivers

I Optimized Microstepping via 6-Bit Linear DACs

I Programmable Mixed, Fast, and Slow Current-Decay Modes

I 4 MHz Internal Oscillator for Digital Timing

I Serial-Interface Controls Chip Functions

I Synchronous Rectification for Low Power Dissipation

I Internal UVLO and Thermal Shutdown Circuitry

I Crossover-Current Protection

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 tempera-

ture of 150°C.

I Precision 2 V Reference

I Inputs Compatible with 3.3 V or 5 V Control Signals

I Sleep and Idle Modes

Always order by complete part number, e.g., A3973SB .

12 3 4 5 6 7...12

中文翻译

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与A3973SB相关器件

型号	品牌	获取价格	描述	数据表
A3973SB-T	ALLEGRO	获取价格	Dual DMOS Full-Bridge Microstepping PWM Motor Driver
A3973SLB	ALLEGRO	获取价格	DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER
A3973SLB-T	ALLEGRO	获取价格	Dual DMOS Full-Bridge Microstepping PWM Motor Driver
A3973SLBTR	ALLEGRO	获取价格	Stepper Motor Controller, 1A, PDSO24, BATWING, PLASTIC, SOIC-24
A3973SLBTR-T	ALLEGRO	获取价格	暂无描述
A3974	ALLEGRO	获取价格	DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER
A3974SED	ALLEGRO	获取价格	DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER
A3974SED-T	ALLEGRO	获取价格	DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER
A3974SEDTR	ALLEGRO	获取价格	Stepper Motor Controller, 1.5A, PQCC44, BATWING, PLASTIC, LCC-44
A3974SEDTR-T	ALLEGRO	获取价格	DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER

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