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A3953SLB PDF预览

A3953SLB

更新时间: 2024-02-27 12:43:20
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

A3953SLB 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:SOIC包装说明:LEAD FREE, PLASTIC, MS-013AA, SOIC-16
针数:16Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.45Is Samacsys:N
其他特性:ALSO REQUIRES 3V TO 50V VBB SUPPLY模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLER
JESD-30 代码:R-PDSO-G16JESD-609代码:e3
长度:10.3 mm湿度敏感等级:3
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):260电源:3.3/5 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:Matte Tin (Sn)
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:40
宽度:7.5 mmBase Number Matches:1

A3953SLB 数据手册

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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  
16  
BRAKE  
1
2
3
4
V
BB  
15 OUT  
REF  
RC  
B
14  
13  
MODE  
GROUND  
GROUND  
GROUND  
LOGIC  
12  
11  
5
6
GROUND  
SENSE  
LOGIC  
SUPPLY  
V
CC  
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  
7
8
10 OUT  
A
V
LOAD  
SUPPLY  
BB  
9
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, VBB . . . . . . . . . . 50 V  
Output Current, IOUT  
(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, VCC . . . . . . . . . 7.0 V  
Logic/Reference Input Voltage Range,  
VIN . . . . . . . . . . . -0.3 V to VCC + 0.3 V  
Sense Voltage, VSENSE  
(VCC = 5.0 V) . . . . . . . . . . . . . . . . 1.0 V  
(VCC = 3.3 V) . . . . . . . . . . . . . . . . 0.4 V  
FEATURES  
I
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  
PD . . . . . . . . . . . . . . . . . . . . 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,  
TA . . . . . . . . . . . . . . . . . -20˚C to +85˚C  
Junction Temperature, TJ . . . . . . . +150˚C†  
Storage Temperature Range,  
TS . . . . . . . . . . . . . . . . -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  
RθJA  
RθJT  
A3953SB  
16-Pin DIP  
43°C/W  
67°C/W  
6°C/W  
6°C/W  
A3953SLB  
16-Lead SOIC  

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