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参数资料
| 型号： | A3977SLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 2/19页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRVR PWM DUAL 28TSSOP |
| 标准包装： | 1 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±2.5A |
| 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： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 产品目录页面： | 1140 (CN2011-ZH PDF) |
| 其它名称： | 620-1147-6 |
A3977
Selection Guide
Microstepping DMOS Driver with Translator
Part Number
Packing
Package
Ambient Temperature, T A
(°C)
A3977KEDTR-T* 450 per reel 44-pin PLCC –40 to 125
A3977SEDTR-T* 450 per reel 44-pin PLCC –20 to 85
A3977SLPTR-T 4000 per reel 28-pin TSSOP –20 to 85
*Variant is in production but has been determined to be LAST TIME BUY. This classification indicates that the
variant is obsolete and notice has been given. Sale of the variant is currently restricted to existing customer
applications. The variant should not be purchased for new design applications because of obsolescence in the
near future. Samples are no longer available. Status date change April 23, 2013. Deadline for receipt of LAST
TIME BUY orders is September 30, 2013.
Absolute Maximum Ratings
Characteristic
Load Supply Voltage
Logic Supply Voltage
Logic Input Voltage Range
Reference Voltage
Sense Voltage (DC)
Symbol
V BB
V DD
V IN
V REF
V SENSE
Pulsed, t w > 30 ns
Pulsed, t w < 30 ns
Notes
Rating
35
7.0
–0.3 to V DD + 0.3
–1.0 to V DD + 1
V DD
0.5
Units
V
V
V
V
V
V
Output current rating may be limited by duty
cycle, ambient temperature, and heat sinking.
Output Current
I OUT
Under any set of conditions, do not exceed the
±2.5
A
specified current rating or a junction temperature
of 150°C.
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
T A
T J (max)
T stg
Range K
Range S
–40 to 125
–20 to 85
150
–55 to 150
oC
oC
oC
oC
Thermal Characteristics
Characteristic
Symbol
Test Conditions*
Value Units
Package Thermal Resistance
R θ JA
Package ED, on 4-layer PCB based on JEDEC standard
Package LP, on 4-layer PCB based on JEDEC standard
22
28
oC/W
oC/W
*Additional thermal information available on the Allegro website.
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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