A3953SLB

更新时间： 2024-11-29 22:14:43

品牌	Logo	应用领域
急速微 - ALLEGRO		驱动器光电二极管电动机控制电机
页数	文件大小	规格书
14页	229K
描述
FULL-BRIDGE PWM MOTOR DRIVER

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技术参数
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替代型号

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A3953SLB 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOIC-16
针数：	16	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.43	Is Samacsys：	N
模拟集成电路 - 其他类型：	STEPPER MOTOR CONTROLLER	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e0	长度：	10.3 mm
功能数量：	1	端子数量：	16
最高工作温度：	85 °C	最低工作温度：	-20 °C
最大输出电流：	1.3 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP16,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	245	电源：	3.3/5,3.3/50 V
认证状态：	Not Qualified	座面最大高度：	2.65 mm
子类别：	Motion Control Electronics	最大供电电流 (Isup)：	50 mA
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	3 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	BIPOLAR	温度等级：	OTHER
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	7.5 mm
Base Number Matches：	1

A3953SLB 数据手册

3953

FULL-BRIDGE PWM MOTOR DRIVER

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

of inductive loads, the A3953S— is capable of continuous output currents to

1.3 A and operating voltages to 50 V. Internal fixed off-time PWM current-

control circuitry can be used to regulate the maximum load current to a

desired value. The peak load current limit is set by the user’s selection of an

input reference voltage and external sensing resistor. The fixed off-time pulse

duration is set by a user- selected external RC timing network. Internal circuit

protection includes thermal shutdown with hysteresis, transient-suppression

diodes, and crossover current protection. Special power-up sequencing is not

required.

LOAD

SUPPLY

BRAKE

15 OUT

REF

MODE

GROUND

LOGIC

GROUND

SENSE

LOGIC

SUPPLY

With the ENABLE input held low, the PHASE input controls load current

polarity by selecting the appropriate source and sink driver pair. The MODE

input determines whether the PWM current-control circuitry operates in a

slow current-decay mode (only the selected source driver switching) or in a

fast current-decay mode (selected source and sink switching). A user-

selectable blanking window prevents false triggering of the PWM current-

control circuitry. With the ENABLE input held high, all output drivers are

disabled. A sleep mode is provided to reduce power consumption.

PHASE

10 OUT

LOAD

SUPPLY

ENABLE

Dwg. PP-056

Note the A3953SB (DIP) and the A3953SLB

(SOIC) are electrically identical and share a

common terminal number assignment.

When a logic low is applied to the BRAKE input, the braking function is

enabled. This overrides ENABLE and PHASE to turn off both source drivers

and turn on both sink drivers. The brake function can be used to dynamically

brake brush dc motors.

ABSOLUTE MAXIMUM RATINGS

Load Supply Voltage, V_BB. . . . . . . . . . 50 V

Output Current, I_OUT

(Continuous) . . . . . . . . . . . . . . 1.3 A*

The A3953S— is supplied in a choice of two power packages; a 16-pin

dual-in-line plastic package with copper heat-sink tabs, and a 16-lead plastic

SOIC with copper heat-sink tabs. For both package styles, the power tab is at

ground potential and needs no electrical isolation.

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

Logic/Reference Input Voltage Range,

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

Sense Voltage, V_SENSE

(V_CC= 5.0 V) . . . . . . . . . . . . . . . . 1.0 V

(V_CC= 3.3 V) . . . . . . . . . . . . . . . . 0.4 V

FEATURES

1.3 A Continuous Output Current

I Sleep (Low Current

Consumption) Mode

I Internal Transient-

Suppression Diodes

I Internal Thermal-

Shutdown Circuitry

I Crossover-Current

and UVLO Protection

Package Power Dissipation,

I 50 V Output Voltage Rating

P_D. . . . . . . . . . . . . . . . . . . . See Graph

I 3 V to 5.5 V Logic Supply Voltage

I Internal PWM Current Control

I Saturated Sink Drivers (Below 1 A)

I Fast and Slow Current-Decay Modes

I Automotive Capable

Operating Temperature Range,

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

Always order by complete part number:

† Fault conditions that produce excessive junction

temperature will activate the device’s thermal

shutdown circuitry. These conditions can be

tolerated but should be avoided.

Part Number

Package

R_θJA

R_θJT

A3953SB

16-Pin DIP

43°C/W

67°C/W

6°C/W

A3953SLB

16-Lead SOIC

12 3 4 5 6 7...14

中文翻译

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A3953SLB 替代型号

型号	品牌	替代类型	描述	数据表
A3953SLBTR	ALLEGRO	完全替代	Stepper Motor Controller, 1.3A, BIPolar, PDSO16, PLASTIC, SOIC-16
A3953SLBTR-T	ALLEGRO	类似代替	FULL-BRIDGE PWM MOTOR DRIVER
A3953SB	ALLEGRO	类似代替	FULL-BRIDGE PWM MOTOR DRIVER

与A3953SLB相关器件

型号	品牌	获取价格	描述	数据表
A3953SLB-T	ALLEGRO	获取价格	FULL-BRIDGE PWM MOTOR DRIVER
A3953SLBTR	ALLEGRO	获取价格	Stepper Motor Controller, 1.3A, BIPolar, PDSO16, PLASTIC, SOIC-16
A3953SLBTR-T	ALLEGRO	获取价格	FULL-BRIDGE PWM MOTOR DRIVER
A3953SLB-TTR	ALLEGRO	获取价格	暂无描述
A3955	ALLEGRO	获取价格	FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
A3955_12	ALLEGRO	获取价格	Full-Bridge PWM Microstepping Motor Driver
A3955SB	ALLEGRO	获取价格	FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
A3955SB-T	ALLEGRO	获取价格	Full-Bridge PWM Microstepping Motor Driver
A3955SLB	ALLEGRO	获取价格	FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
A3955SLB-T	ALLEGRO	获取价格	Full-Bridge PWM Microstepping Motor Driver

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