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参数资料
| 型号： | A3955SB-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 3/14页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER PWM FULL 16-DIP |
| 标准包装： | 25 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±1.5A |
| 电压 - 负载： | 4.5 V ~ 50 V |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-DIP |
| 包装： | 管件 |
| 产品目录页面： | 1140 (CN2011-ZH PDF) |
| 其它名称： | 620-1067 |
A3955
Description (continued)
Full-Bridge PWM Microstepping Motor Driver
Internal circuit protection includes thermal shutdown with hysteresis,
transient-suppression diodes, and crossover-current protection.
Special power-up sequencing is not required.
The A3955 is supplied in a choice of two power packages; a 16-pin
dual-in-line plastic package with copper heat-sink tabs (suffix ‘B’),
Selection Guide
and a 16-lead plastic SOIC with internally fused pins (suffix ‘LB’).
For both package styles, the thermally enhanced pins are at ground
potential and need no electrical isolation. Both packages are lead
(Pb) free, with leadframe plating 100% matte tin.
Part Number
A3955SB-T
A3955SLBTR-T
Packing
16-pin DIP with exposed thermal tabs
16-pin SOICW with internally fused pins
Package
25 per tube
1000 per reel
Absolute Maximum Ratings
Characteristic
Load Supply Voltage
Logic Supply Voltage
Logic/Reference Input Voltage Range
Sense Voltage
Symbol
V BB
V CC
V IN
V S
Notes
Rating
50
7.0
–0.3 to V CC + 0.3
1.0
Units
V
V
V
V
Output current rating may be limited by duty cycle, ambient
Output Current, Continuous
I OUT
temperature, and heat sinking. Under any set of conditions, do
not exceed the speci ? ed current rating or a junction tempera-
±1.5
A
ture of 150 ° C.
Package Power Dissipation
P D
See graph
W
Operating Ambient Temperature
T A
Range S
–20 to 85
oC
Fault conditions that produce excessive junction temperature
Maximum Junction Temperature
Storage Temperature
T J (max)
T stg
will activate the device’s thermal shutdown circuitry. These
conditions can be tolerated but should be avoided.
150
–55 to 150
oC
oC
Thermal Characteristics
Characteristic
Package Thermal Resistance, Junction
to Ambient
Package Thermal Resistance, Junction
to Tab
Symbol
R θ JA
R θ JT
Test Conditions*
2
B Package, single-layer PCB, 1 in. 2 2-oz. exposed copper
LB Package, 2-layer PCB, 0.3 in. 2-oz. exposed copper each
side
Value
43
67
6
Units
oC/W
oC/W
oC/W
*Additional thermal information available on Allegro website.
4
R θ JT = 6.0°C/W
3
SUFFIX 'B', R θ JA = 43°C/W
2
1
SUFFIX 'LB', R θ JA = 67°C/W
0
25
50
75 100
125
150
TEMPERATURE IN °C
Allegro MicroSystems, Inc.
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 |
|---|---|
| A3955SB-T | 制造商:Allegro MicroSystems 功能描述:Driver IC Number of Drivers:1 |
| A3955SLB | 功能描述:IC MOTOR DRIVER PWM FULL 16-SOIC RoHS:否 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 |
| A3955SLB-T | 功能描述:IC MOTOR DRIVER PWM FULL 16-SOIC 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 |
| A3955SLB-T | 制造商:Allegro MicroSystems 功能描述:Motor Controller / Driver IC |
| A3955SLBTR | 功能描述:IC MOTOR DRIVER PWM FULL 16-SOIC RoHS:否 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 |
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