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参数资料
| 型号： | A3987SLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 2/13页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MICROSTEPPING 24-TSSOP |
| 产品培训模块： | A3987 DMOS Microstepping |
| 标准包装： | 1 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±1.5A |
| 电压 - 负载： | 8 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： | 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 |
| 产品目录页面： | 1141 (CN2011-ZH PDF) |
| 其它名称： | 620-1171-6 |
A3987
Description (continued)
DMOS Microstepping Driver with Translator
Internal synchronous rectification control circuitry is provided to
improve power dissipation during PWM operation.
Internal circuit protection includes: thermal shutdown with
hysteresis, undervoltage lockout (UVLO), and crossover current
Selection Guide
protection. Special power-up sequencing is not required.
The A3987 is supplied in a thin profile (1.2 mm maximum height)
24-lead TSSOP (suffix LP) with exposed thermal tab. The package
is lead (Pb) free with 100% matte tin leadframe plating.
Part Number
A3987SLPTR-T
Absolute Maximum Ratings
Package
24-pin TSSOP with exposed thermal pad
Packing
4000 pieces / reel
Characteristic
Load Supply Voltage
Symbol
V BB
Notes
Rating
50
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-
±1.5
A
perature of 150°C.
Logic Supply Voltage
Logic Input Voltage Range
VBBx to OUTx
Sense Voltage
Reference Voltage
V DD
V IN
V SENSE
V REF
7.0
–0.3 to V DD + 0.3
50
0.5
0 to 4
V
V
V
V
V
Nominal Operating Temperature
Maximum Junction Temperature
Storage Temperature
T A
T J (max)
T stg
Range S
–20 to 85
150
–55 to 150
oC
oC
oC
Thermal Characteristics*
Characteristic
Package Thermal Resistance
Symbol
R θ JA
Notes
4-layer PCB based on JEDEC standard
2-layer PCB with 3.8 in. 2 2 oz. copper each side
Rating
28
32
Units
°C/W
°C/W
*Additional thermal data available on the Allegro website.
Maximum Power Dissipation, P D (max)
5.5
5.0
4.5
4.0
θ J
32
3.5
3.0
2.5
2.0
(R
θ J
A
(R
=
A
=
oC
28
/W
oC
)
/W
)
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, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3987SLPTR-T | 制造商:Allegro MicroSystems 功能描述:IC MOTOR DRIVER DMOS 1.5A TSSOP-24 |
| A3988 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Quad DMOS Full Bridge PWM Motor Driver |
| A3988_11 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A3988 is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four DC motors. |
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