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| 型号： | APEK4987SLP-01-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL MOTOR CONTROL A4987 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电机控制，步进控制器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | A4987 |
| 已供物品： | 板 |
| 相关产品： | 620-1404-2-ND - IC STEPPER MOTOR DRIVER 24QFN 620-1345-2-ND - IC STEPPER MOTOR DRIVER 24TSSOP |
| 其它名称： | 620-1375 |
A4987
DMOS Dual Full-Bridge PWM Motor Driver
With Overcurrent Protection
Features and Benefits
Description
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Low R DS(ON) outputs
Internal mixed current decay mode
Synchronous rectification for low power dissipation
Internal UVLO
Crossover-current protection
3.3 and 5 V compatible logic supply
Thin profile QFN and TSSOP packages
Thermal shutdown circuitry
Short-to-ground protection
Shorted load protection
Low current Sleep mode, < 10 μ A
The A4987 is a dual DMOS full-bridge stepper motor driver
with parallel input communication and overcurrent protection.
Each full-bridge output is rated up to 35 V and ±1 A. The A4987
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. 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.
The outputs are protected from shorted load and short-to-
24-contact QFN
4 mm × 4 mm × 0.75 mm
(ES package)
24-pin TSSOP
with exposed thermal pad
(LP Package)
Approximate size
ground events, which protect the driver and associated circuitry
from thermal damage or flare-ups. Other protection features
include thermal shutdown with hysteresis, undervoltage lockout
(UVLO) and crossover current protection. Special power-up
sequencing is not required.
The A4987 is supplied in two packages, a 24-contact QFN (ES)
and a 24-pin TSSOP (LP). Both packages have exposed thermal
pads for enhanced thermal performance. The 24-contact ES is
4 mm × 4 mm, with a nominal overall package height of 0.75
mm. The 24-pin LP is a TSSOP with 0.65 pitch and an overall
package height of ≤ 1.2 mm. Both packages are lead (Pb) free,
with 100% matte tin leadframe plating.
Typical Application Diagram
V DD
0.22 μ F
0.1 μ F
0.1 μ F
0.22 μ F
VREG ROSC
VDD
CP1
CP2
VCP
VBB1
VBB2
100 μ F
Microcontroller or
Controller Logic
SLEEP
IN01
IN02
A4987
OUT1A
OUT1B
SENSE1
PH1
IN11
IN12
PH2
OUT2A
OUT2B
VREF
GND
GND
SENSE2
4987-DS, Rev. 5
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相关代理商/技术参数 |
参数描述 |
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| APEK4987SLP-01-T-DK | 功能描述:A4987 - Power Management, Motor Control, Stepper Evaluation Board 制造商:allegro microsystems, llc 系列:- 零件状态:有效 主要用途:电源管理，电机控制，步进控制器 嵌入式:否 使用的 IC/零件:A4987 主要属性:- 辅助属性:- 所含物品:板 标准包装:1 |
| APEK4988SET-01-T-DK | 功能描述:A4988 - Power Management, Motor Control, Stepper Evaluation Board 制造商:allegro microsystems, llc 系列:- 零件状态:有效 主要用途:电源管理，电机控制，步进控制器 嵌入式:- 使用的 IC/零件:A4988 主要属性:- 辅助属性:- 所含物品:板 标准包装:1 |
| APEK4989SLD-01-T | 制造商:Allegro MicroSystems LLC 功能描述: |
| APEK4989SLD-01-T-DK | 功能描述:A4989 - Power Management, Motor Control, Stepper Evaluation Board 制造商:allegro microsystems, llc 系列:- 零件状态:有效 主要用途:电源管理，电机控制，步进控制器 嵌入式:- 使用的 IC/零件:A4989 主要属性:- 辅助属性:- 所含物品:板 标准包装:1 |
| APEK5940GEJ-01-T-DK | 功能描述:BOARD EVAL FOR A5940GEJ 制造商:allegro microsystems, llc 系列:- 零件状态:有效 标准包装:1 |
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