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| 型号： | A4986SLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC PWM MOTOR DRIVER 24TSSOP |
| 特色产品： | A498x Motor Driver Family |
| 标准包装： | 1 |
| 应用： | PWM 电机驱动器 |
| 评估套件： | 可供 |
| 输出数： | 1 |
| 电流 - 输出： | ±2A |
| 电压 - 负载： | 8 V ~ 35 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： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | 620-1342-6 |
A4986
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 A4986 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 ±2 A.
The A4986 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.
24-contact QFN
4 mm × 4 mm × 0.75 mm
(ES package)
24-pin TSSOP
with exposed thermal pad
(LP Package)
Approximate size
The outputs are protected from shorted load and short-to-
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 A4986 is supplied in a 24-contact QFN package (ES), and
a 24-pin TSSOP package (LP) with an overall package height
of ≤ 1.2 mm. Both packages have exposed pads for enhanced
thermal dissipation, and are lead (Pb) free (suffix –T), with
100% matte tin plated leadframes.
Typical Application Diagram
V DD
0.22 μ F
0.1 μ F
0.1 μ F
0.22 μ F
VREG ROSC
CP1
CP2
VCP
VBB1
VDD
VBB2
100 μ F
Microcontroller or
Controller Logic
SLEEP
IN01
IN02
A4986
OUT1A
OUT1B
SENSE1
PH1
IN11
IN12
PH2
OUT2A
OUT2B
VREF
GND
GND
SENSE2
4986-DS, Rev. 4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A4987 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:DMOS Dual Full-Bridge PWM Motor Driver With Overcurrent Protection |
| A4987_12 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:DMOS Dual Full-Bridge PWM Motor Driver With Overcurrent Protection |
| A4987SESTR-T | 功能描述:IC STEPPER MOTOR DRIVER 24QFN 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 |
| A4987SLPTR | 制造商:Allegro MicroSystems LLC 功能描述:DMOS Dual Full-Bridge PWM Motor Driver |
| A4987SLPTR-T | 功能描述:IC STEPPER MOTOR DRIVER 24TSSOP 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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