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| 型号： | A4973SLBTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC PWM MOTOR DVR FULL 16SOIC |
| 特色产品： | A4973 Motor Driver |
| 标准包装： | 1 |
| 应用： | 直流电机驱动器，PWM 电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | 1.5A |
| 电压 - 负载： | 5 V ~ 50 V |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 标准包装 |
| 其它名称： | 620-1438-6 |
A4973
Full-Bridge PWM Motor Driver
Features and Benefits
? ±1.5 A continuous output current
? 50 V output voltage rating
? 3 V to 5.5 V logic supply voltage
? Internal PWM current control
? Fast and slow current-decay modes
? Sleep (low current consumption) mode
? Internal transient-suppression diodes
? Internal thermal shutdown circuitry
? Crossover current and UVLO protection
Packages:
Description
Designed for bidirectional pulse width modulated (PWM)
current control of inductive loads, the A4973 is capable of
continuous output currents to ±1.5 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.
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
Package B, 16-pin DIP
with exposed tabs
Package LB, 16-pin SOIC
with internally fused pins
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.
Not to scale
Continued on the next page…
Functional Block Diagram
LOGIC
SUPPLY
6 V CC
9
10
15
16
SLEEP &
STANDBY MODES
MODE
PHASE
ENABLE
BRAKE
14
7
8
1
UVLO
& TSD
V BB
PWM LATCH
11
BLANKING
Q
R
S
2
SENSE
RS
GROUND
4
5
V CC
RC
3
+ –
2
12
13
REF
GROUND
4973DS, Rev. 1
RT
CT
V TH
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A4975 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Full-Bridge PWM Microstepping Motor Driver |
| A4975SB-T | 功能描述:IC PWM MICROSTEP DVR FULL 16DIP RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| A4975SLBTR-T | 功能描述:IC PWM MICROSTEP DVR FULL 16SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 产品变化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 标准包装:1 系列:- 应用:DC 电机控制器，无刷（BLDC），3 相 评估套件:可供 输出数:1 电流 - 输出:100mA 电压 - 负载:5.25 V ~ 20 V 电源电压:5.25 V ~ 20 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-VQFN（7x7） 包装:剪切带 (CT) 其它名称:ATA6833-PLQWCT |
| A4979 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A4979 is a flexible microstepping motor driver with built-in translator for easy operation. |
| A4979GLPTR-T | 功能描述:IC MOTOR DRVR MICRO STEP 28TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:步进电机驱动器，1-2 相，2 相 评估套件:- 输出数:1 电流 - 输出:800mA 电压 - 负载:10 V ~ 28 V 电源电压:4.75 V ~ 5.25 V 工作温度:-20°C ~ 90°C 安装类型:表面贴装 封装/外壳:28-SOP + 2 翼片裸露焊盘 供应商设备封装:28-HSOPHC（15.2x7.9） 包装:剪切带 (CT) 其它名称:869-1268-1 |
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