A3973SLBTR-T

更新时间： 2024-09-17 12:58:35

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器电机
页数	文件大小	规格书
5页	59K
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A3973SLBTR-T 数据手册

Page 1 of 5

3976

DUAL FULL BRIDGE

ADVANCED DATASHEET - 02/19/99

(Subject to change without notice)

PROTECTED MOTOR DRIVER

V_BB

ENABLE1

PHASE1

n/c

24 V_CC

23 ENABLE2

22 PHASE2

21 n/c

The A3976 is designed to drive both windings of a bipolar stepper

motor or bidirectionally control two DC Motors. Both H-Bridges are capable

of continuous output currents of up to +/- 500 mA and operating voltages to

30V. Free wheeling, substrate isolated diodes are included for output transient

suppression when switching motors or other inductive loads. For each bridge

the PHASE input controls load current polarity by selecting the appropriate

source and sink driver pair. The ENABLE input, when held high, enables the

respective output H-bridge. When both ENABLE pins are held low the device

will enter SLEEP mode and consume less than 100mA.

n/c

20 n/c

GROUND

A3976KLB

GROUND

n/c

17 n/c

OUT1A

16 OUT2A

15 n/c

n/c 10

FAULT1 11

OUT1B 12

The 3976 is protected to ensure safe operation in harsh operating

environments and was designed specifically for automotive applications.

Protection circuitry will check for open or shorted load, motor lead short to

ground or supply, VBB overvoltage, VCC undervoltage, and thermal

shutdown. If any of these conditions are detected the outputs will be disabled

and fault information will be output to diagnostic pins FAULT1 and FAULT2.

14 FAULT2

13 OUT2B

ABSOLUTE MAXIMUM RATINGS

at T = +25°C

The 3976 is supplied in a choice of two power packages, a 16-lead

plastic DIP with a copper batwing tab (suffix ‘B’), and a 24-lead plastic SOIC

with a copper batwing tab (suffix ‘LB’). In both cases, the power tab is at

ground potential and needs no electrical isolation.

Operating Supply Voltage, V_BB....................30 V

Non-Operating Supply Voltage.....................35 V

Output Current, I_OUT............................±500 mA*

Logic Supply Voltage, V_CC..........................7.0 V

Fault Output Voltage ...................................7.0 V

Logic Input Voltage Range,

FEATURES

n 30 V , ±500 mA Continuous Output Rating

n 35V Load Dump Survival

V_IN..........................-0.3 V to V_CC+ 0.3 V

n Output Short Circuit Protection

n Coded Fault Diagnostic Outputs

n Low Current Standby Mode

n Open Load Monitor

Package Power Dissipation (T = +25°C), P_D

A3976KLB..................................2.2 W

A3976KB ....................................2.9 W

Operating Temperature Range,

n Low Current Standby Mode

n VBB Over Voltage Shutdown

n Internal Thermal Shutdown Circuitry

n Internal Low Parasitic Free Wheeling Diodes

n Crossover Current Protection

T_A..............................-40°C to +125°C

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

Storage Temperature Range,

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.

PART NUMBER

A3976KLB

PACKAGE

24 Lead SOIC

16 Lead DIP

R_ØJA

R_ØJT

56°C/W

43°C/W

6°C/W

A3973KB

12 3 4 5

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A3973SLBTR-T 替代型号

型号	品牌	替代类型	描述	数据表
A3973SLBTR	ALLEGRO	完全替代	Stepper Motor Controller, 1A, PDSO24, BATWING, PLASTIC, SOIC-24
A3973SLB-T	ALLEGRO	完全替代	Dual DMOS Full-Bridge Microstepping PWM Motor Driver
A3973SLB	ALLEGRO	完全替代	DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER

与A3973SLBTR-T相关器件

型号	品牌	获取价格	描述	数据表
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
A3976	ETC	获取价格	DUAL FULL BRIDGE PROTECTED MOTOR DRIVER
A3976KB	ALLEGRO	获取价格	Motion Control Electronic, BIPolar, PDIP16, DIP-16
A3976KLB	ALLEGRO	获取价格	DUAL FULL BRIDGE PROTECTED MOTOR DRIVER
A3977	ALLEGRO	获取价格	MICROSTEPPING DMOS DRIVER WITH TRANSLATOR
A3977EED	ALLEGRO	获取价格	Stepper Motor Controller, 2.5A, NMOS, PQCC44, COPPER BATWING, PLASTIC, LCC-44

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