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| 型号： | A3984SLPTR |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MICROSTEPPING 24-TSSOP |
| 标准包装： | 4,000 |
| 应用： | 步进电机驱动器 |
| 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： | 带卷 (TR) |
A3984
Description (continued)
DMOS Microstepping Driver with Translator
initially to a fast decay for a period amounting to 31.25% of
the fixed off-time, then to a slow decay for the remainder of the
off-time). This current decay control scheme results in reduced
audible motor noise, increased step accuracy, and reduced power
dissipation.
Internal synchronous rectification control circuitry is provided to
improve power dissipation during PWM operation.
Selection Guide
Internal circuit protection includes: thermal shutdown with
hysteresis, undervoltage lockout (UVLO), and crossover-current
protection. Special power-on sequencing is not required.
The A3984 is supplied in a low-profile (1.2 mm maximum),
24-pin TSSOP with exposed thermal pad (package LP ). It is lead
(Pb) free, with 100% matte tin leadframe plating.
Part Number
A3984SLPTR-T
Packing
4000 pieces per 13-in. reel
Absolute Maximum Ratings
Characteristic
Load Supply Voltage
Symbol
V BB
Notes
Rating
35
Units
V
Output current rating may be limited by duty cycle, ambient
Output Current
I OUT
temperature, and heat sinking. Under any set of conditions,
do not exceed the specified current rating or a junction tem-
±2
A
perature of 150°C.
Logic Input Voltage
Sense Voltage
Reference Voltage
V IN
V SENSE
V REF
–0.3 to 7
0.5
4
V
V
V
Operating Ambient Temperature
Maximum Junction
Storage Temperature
T A
T J (max)
T stg
Range S
–20 to 85
150
–55 to 150
oC
oC
oC
THERMAL CHARACTERISTICS
Characteristic
Symbol
Test Conditions*
Value Units
Package Thermal Resistance
R θ JA
4-layer PCB, based on JEDEC standard
28
oC/W
*Additional thermal information available on Allegro Web site.
5.5
5.0
4.5
4.0
Maximum Power Dissipation, P D (max)
3.5
3.0
2.5
(R
θ J
A
=
28
oC
/W
)
2.0
1.5
1.0
0.5
0.0
20
40
60
80 100 120
140
160
180
Temperature (°C)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3984SLPTR-T | 功能描述:IC DRIVER MICROSTEPPING 24-TSSOP 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 |
| A3985 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Digitally Programmable Dual Full-Bridge MOSFET Driver |
| A3985SLD-T | 制造商:Allegro MicroSystems 功能描述:MOSFET DRVR 2V 8-OUT Hi/Lo Side Full Brdg 38-Pin TSSOP Tube 制造商:Allegro MicroSystems 功能描述:IC MOSFET DRIVER |
| A3985SLD-T | 制造商:Allegro MicroSystems 功能描述:MOSFET Driver IC |
| A3985SLDTR-T | 功能描述:IC MOSFET DRVR PROG DUAL 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:5 系列:- 配置:低端 输入类型:非反相 延迟时间:600ns 电流 - 峰:12A 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:- 电源电压:14.2 V ~ 15.8 V 工作温度:-20°C ~ 60°C 安装类型:通孔 封装/外壳:21-SIP 模块 供应商设备封装:模块 包装:散装 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名称:835-1063 |
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