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| 型号： | A3988SEVTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRVR PWM QUAD 36-QFN |
| 标准包装： | 1 |
| 应用： | 直流电机驱动器，步进电机驱动器 |
| 输出数： | 2 或 4 |
| 电流 - 输出： | ±1.2A |
| 电压 - 负载： | 8 V ~ 36 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： | 36-VFQFN 裸露焊盘 |
| 供应商设备封装： | 36-QFN-EP（6x6） |
| 包装： | 标准包装 |
| 产品目录页面： | 1141 (CN2011-ZH PDF) |
| 其它名称： | 620-1176-6 |
A3988
Quad DMOS Full Bridge PWM Motor Driver
Features and Benefits
Description
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36 V output rating
4 full bridges
Dual stepper motor driver
High current outputs
3.3 and 5 V compatible logic supply
Synchronous rectification
Internal undervoltage lockout (UVLO)
Thermal shutdown circuitry
Crossover-current protection
Low profile QFN package
The A3988 is a quad DMOS full-bridge driver capable of
driving up to two stepper motors or four DC motors. Each
full-bridge output is rated up to 1.2 A and 36 V. The A3988
includes fixed off-time pulse width modulation (PWM) current
regulators, along with 2- bit nonlinear DACs (digital-to-analog
converters) that allow stepper motors to be controlled in full,
half, and quarter steps, and DC motors in forward, reverse, and
coast modes. The PWM current regulator uses the Allegro ?
patented mixed decay mode for reduced audible motor noise,
increased step accuracy, and reduced power dissipation.
Internal synchronous rectification control circuitry is provided
Packages
to improve power dissipation during PWM operation.
Protection features include thermal shutdown with hysteresis,
undervoltage lockout (UVLO) and crossover current protection.
Special power up sequencing is not required.
Package EV, 36 pin QFN
0.90 mm nominal height
with exposed thermal pad
Approximate scale
The A3988 is supplied in two packages, EV and JP, with
exposed power tabs for enhanced thermal performance. The
EV is a 6 mm x 6 mm, 36 pin QFN package with a nominal
overall package height of 0.90 mm. The JP is a 7 mm × 7 mm
48 pin LQFP. Both packages are lead (Pb) free, with 100%
matte tin leadframe plating.
Package JP, 48 pin LQFP
with exposed thermal pad
PHASE1
0.1 μ F
5 0 V
0.1 μ F
50 V
OUT1A
100 μ F
50 V
V MOTOR 32 V
0.22 μ F
50 V
Microprocessor
I01
I11
PHASE2
I02
I12
A3988
OUT1B
OUT2A
OUT2B
OUT3A
Bipolar Stepper Motors
PHASE3
I03
I13
PHASE4
OUT3B
OUT4A
OUT4B
I04
I14
VREF1
SENSE2
SENSE1
R S2
V REF
V DD 3.3 V
VREF2
VREF3
VREF4
VDD
SENSE3
SENSE4
R S1
R S3
R S4
Figure 1. Typical application circuit
A3988DS, Rev. 9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3988SJP-T | 功能描述:IC MOTOR DVR PWM FULL BRG 48LQFP 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 |
| A3988SJPTR-T | 功能描述:IC PWM MOTR DVR FULL BRDG 48LQFP 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 |
| A3989 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Bipolar Stepper and High Current DC Motor Driver |
| A3989_V | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Bipolar Stepper and High Current DC Motor Driver |
| A39899 | 制造商:n/a 功能描述:Power Semiconductor |
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